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23 Commits
v0.74 ... master

Author SHA1 Message Date
Olaf Rempel 1509afc016 Version 0.85 (20081203) 2009-02-05 15:34:57 +01:00
Olaf Rempel 751dfff780 Version 0.84 (20081106) 2009-02-05 15:33:11 +01:00
Olaf Rempel 7c18de72f8 Version 0.83 (20080412) 2009-02-05 15:32:15 +01:00
Olaf Rempel 2c2646b64f Version 0.81 (20061002) 2006-11-08 22:23:03 +01:00
Olaf Rempel 5cc82b476b Version 0.80beta3 (20060528) 2006-05-31 14:30:05 +02:00
Olaf Rempel 31b7584b2f Version 0.80beta2 (20060527) 2006-05-27 12:52:20 +02:00
Olaf Rempel dcee58ebd2 update doc 2006-05-26 20:19:10 +02:00
Olaf Rempel 0cbb5686dc replace START_WAIT timer with simple loop 2006-05-26 19:54:29 +02:00
Olaf Rempel 93453d0aaa cleanup read_fuse_lock() 2006-05-26 19:37:18 +02:00
Olaf Rempel d1f7b638d1 use pointer access 2006-05-26 19:33:50 +02:00
Olaf Rempel f302c14c93 mark all functions static 2006-05-26 19:31:18 +02:00
Olaf Rempel 9d7073387a use more c-style 2006-05-26 19:29:55 +02:00
Olaf Rempel 2dca010c7d Bugfixes 
- fix typo recchar()
- fix flash read/write for mega128
 2006-05-26 19:26:19 +02:00
Olaf Rempel 11b8928759 Version 0.80beta (20060521) 2006-05-22 14:17:47 +02:00
Olaf Rempel 70d5a20eb3 update doc 
- move remaining defines into main.c
 2006-05-20 00:30:03 +02:00
Olaf Rempel b253baf838 optimize functions 
- split BlockLoad() into recvBuffer(), writeFlashPage() and writeEEpromPage()
- split BlockRead() into readFlashPage() and readEEpromPage()
- make eraseFlash() a inline too
- remove global variables
- fix byte/word addressing
- use typedef for buffer index (results in uint8_t on most cpus)
 2006-05-20 00:06:27 +02:00
Olaf Rempel b29674a1f2 use stdint types 
- use blocklocal variables
 2006-05-20 00:04:32 +02:00
Olaf Rempel 570d07d3a0 remove interrupt vectors 
- wrong register used (MCUCR instead of GICR)
- interrupts are not enabled (reset/cli)
- discard section "vectors" when linking
- based on binutils 2.16.1 ldscripts
 2006-05-19 23:58:50 +02:00
Olaf Rempel c897637dc2 cleanup uart stuff 
- use new per-cpu headers
- remove interrupt handling from uart functions
- correct baudrate calculation
- introduce UART_DOUBLESPEED to use fast mode
- introduce UART_SECOND to use 2nd uart on mega128
- move uart functions to main.c, delete uart.[ch]
- rename XTAL to F_CPU (avrlibc style)
- move some defines from Makefile to main.c
 2006-05-19 22:19:18 +02:00
Olaf Rempel cb5d02f4ba cleanup cpu selection 
- splitting chipdef.h, one header per cpu
- use integer define for BOOTSIZE
- calc correct bootloader address
 2006-05-19 21:52:42 +02:00
Olaf Rempel 51182dbccb cleanup main.c 
- codingstyle
- move functions to top (readable asm-listing)
- pull lowlevel.c into main.c
 2006-05-19 21:52:00 +02:00
Olaf Rempel ba471f01de cleanup 
- dos2unix
- remove trailing spaces
 2006-05-19 21:00:23 +02:00
Olaf Rempel 919606b3ab Version 0.75 2006-05-01 19:20:40 +02:00
32 changed files with 3015 additions and 915 deletions
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2
avrprog_boot.pnproj
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@ -1 +1 @@
<Project name="avrprog_boot"><File path="uart.h"></File><File path="lowlevel.c"></File><File path="lowlevel.h"></File><File path="main.c"></File><File path="makefile"></File><File path="readme.txt"></File><File path="uart.c"></File><File path="chipdef.h"></File><File path="main.lss"></File></Project>
<Project name="avrprog_boot"><File path="chipdef.h"></File><File path="main.c"></File><File path="makefile"></File><File path="mega128.h"></File><File path="mega128can.h"></File><File path="mega16.h"></File><File path="mega169.h"></File><File path="mega32.h"></File><File path="mega8.h"></File><File path="readme.txt"></File><File path="ldscripts_no_vector\avr5.x"></File><File path="main.lss"></File><File path="main.map"></File><File path="ldscripts_no_vector\avr4.x"></File><File path="mega162.h"></File><File path="mega644.h"></File><File path="mega644p.h"></File><File path="megaxx4p.h"></File><File path="mega324p.h"></File></Project>

1
avrprog_boot.pnps Normal file
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<pd><ViewState><e p="avrprog_boot" x="true"></e></ViewState></pd>

248
chipdef.h
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@ -1,189 +1,59 @@
#ifndef CHIPDEF_H
#define CHIPDEF_H
#include <avr/io.h>
// TODO: make use of RAMEND in the avr-libc io-files and
// avoid a lot of by-device definitions here
#if defined(__AVR_ATmega169__)
#define sig_byte3 0x1E
#define sig_byte2 0x94
#define sig_byte1 0x05
#define devtype 0x79 // Mega 169 device code
// #define PAGESIZE 128 // 2*64 Words = Size in Bytes
#ifdef _B128
#define APP_PAGES ((2*8192 / SPM_PAGESIZE)- (2*128 / SPM_PAGESIZE ))
#define APP_END APP_PAGES * SPM_PAGESIZE
#endif
#ifdef _B256
#define APP_PAGES ((2*8192 / SPM_PAGESIZE)- (2*256 / SPM_PAGESIZE ))
#define APP_END APP_PAGES * SPM_PAGESIZE
#endif
#ifdef _B512
#define APP_PAGES ((2*8192 / SPM_PAGESIZE)- (2*512 / SPM_PAGESIZE ))
#define APP_END APP_PAGES * SPM_PAGESIZE
#endif
#ifdef _B1024
#define APP_PAGES ((2*8192 / SPM_PAGESIZE)- (2*1024 / SPM_PAGESIZE ))
#define APP_END APP_PAGES * SPM_PAGESIZE
#endif
#ifdef _B2048
#error "_B2048 not suppoted on this device"
#endif
#elif defined(__AVR_ATmega16__)
#define sig_byte3 0x1E
#define sig_byte2 0x94
#define sig_byte1 0x03
#define devtype 0x75 // Mega16 device code
// #define PAGESIZE 128 // Size in Bytes
#ifdef _B128
#define APP_PAGES ((2*8192 / SPM_PAGESIZE)- (2*128 / SPM_PAGESIZE ))
#define APP_END APP_PAGES * SPM_PAGESIZE
#endif
#ifdef _B256
#define APP_PAGES ((2*8192 / SPM_PAGESIZE)- (2*256 / SPM_PAGESIZE ))
#define APP_END APP_PAGES * SPM_PAGESIZE
#endif
#ifdef _B512
#define APP_PAGES ((2*8192 / SPM_PAGESIZE)- (2*512 / SPM_PAGESIZE ))
#define APP_END APP_PAGES * SPM_PAGESIZE
#endif
#ifdef _B1024
#define APP_PAGES ((2*8192 / SPM_PAGESIZE)- (2*1024 / SPM_PAGESIZE ))
#define APP_END APP_PAGES * SPM_PAGESIZE
#endif
#ifdef _B2048
#error "_B2048 not suppoted on this device"
#endif
#elif defined(__AVR_ATmega8__)
#define sig_byte3 0x1E
#define sig_byte2 0x93
#define sig_byte1 0x07
#define devtype 0x77 // Mega8 boot device code
// #define PAGESIZE 64 // Size in Bytes
#ifdef _B128
#define APP_PAGES ((2*4096 / SPM_PAGESIZE)- (2*128 / SPM_PAGESIZE ))
#define APP_END APP_PAGES * SPM_PAGESIZE
#endif
#ifdef _B256
#define APP_PAGES ((2*4096 / SPM_PAGESIZE)- (2*256 / SPM_PAGESIZE ))
#define APP_END APP_PAGES * SPM_PAGESIZE
#endif
#ifdef _B512
#define APP_PAGES ((2*4096 / SPM_PAGESIZE)- (2*512 / SPM_PAGESIZE ))
#define APP_END APP_PAGES * SPM_PAGESIZE
#endif
#ifdef _B1024
#define APP_PAGES ((2*4096 / SPM_PAGESIZE)- (2*1024 / SPM_PAGESIZE ))
#define APP_END APP_PAGES * SPM_PAGESIZE
#endif
#ifdef _B2048
#error "_B2048 not suppoted on this device"
#endif
#elif defined(__AVR_ATmega32__)
#define sig_byte3 0x1E
#define sig_byte2 0x95
#define sig_byte1 0x02
#define devtype 0x73 // Mega32 device code
// #define PAGESIZE 128 // Size in Bytes
#ifdef _B128
#define APP_PAGES ((2*16384UL / SPM_PAGESIZE)- (2*128 / SPM_PAGESIZE ))
#define APP_END APP_PAGES * SPM_PAGESIZE
#endif
#ifdef _B256
#define APP_PAGES ((2*16384UL / SPM_PAGESIZE)- (2*256 / SPM_PAGESIZE ))
#define APP_END APP_PAGES * SPM_PAGESIZE
#endif
#ifdef _B512
#define APP_PAGES ((2*16384UL / SPM_PAGESIZE)- (2*512 / SPM_PAGESIZE ))
#define APP_END APP_PAGES * SPM_PAGESIZE
#endif
#ifdef _B1024
#define APP_PAGES ((2*16384UL / SPM_PAGESIZE)- (2*1024 / SPM_PAGESIZE ))
#define APP_END APP_PAGES * SPM_PAGESIZE
#endif
#ifdef _B2048
#define APP_PAGES ((2*16384UL / SPM_PAGESIZE)- (2*2048 / SPM_PAGESIZE ))
#define APP_END APP_PAGES * SPM_PAGESIZE
#endif
#elif defined(__AVR_ATmega128__)
#define sig_byte3 0x1E
#define sig_byte2 0x97
#define sig_byte1 0x02
#define devtype 0x44 //
// #define PAGESIZE 128 // Size in Bytes
#ifdef _B512
#define APP_PAGES ((2*65536UL / SPM_PAGESIZE)- (2*512 / SPM_PAGESIZE ))
#define APP_END APP_PAGES * SPM_PAGESIZE
#endif
#ifdef _B1024
#define APP_PAGES ((2*65536UL / SPM_PAGESIZE)- (2*1024 / SPM_PAGESIZE ))
#define APP_END APP_PAGES * SPM_PAGESIZE
#endif
#ifdef _B2048
#define APP_PAGES ((2*65536UL / SPM_PAGESIZE)- (2*2048 / SPM_PAGESIZE ))
#define APP_END APP_PAGES * SPM_PAGESIZE
#endif
#ifdef _B4096
#define APP_PAGES ((2*65536UL / SPM_PAGESIZE)- (2*4096 / SPM_PAGESIZE ))
#define APP_END APP_PAGES * SPM_PAGESIZE
#endif
#elif defined(__AVR_AT90CAN128__)
#define sig_byte3 0x1E
#define sig_byte2 0x97
#define sig_byte1 0x81
#define devtype 0x43 /* Dummy device code for now, must be same as
used in avrdude.conf */
// #define PAGESIZE 128 // Size in Bytes
#ifdef _B512
#define APP_PAGES ((2*65536UL / SPM_PAGESIZE)- (2*512 / SPM_PAGESIZE ))
#define APP_END APP_PAGES * SPM_PAGESIZE
#endif
#ifdef _B1024
#define APP_PAGES ((2*65536UL / SPM_PAGESIZE)- (2*1024 / SPM_PAGESIZE ))
#define APP_END APP_PAGES * SPM_PAGESIZE
#endif
#ifdef _B2048
#define APP_PAGES ((2*65536UL / SPM_PAGESIZE)- (2*2048 / SPM_PAGESIZE ))
#define APP_END APP_PAGES * SPM_PAGESIZE
#endif
#ifdef _B4096
#define APP_PAGES ((2*65536UL / SPM_PAGESIZE)- (2*4096 / SPM_PAGESIZE ))
#define APP_END APP_PAGES * SPM_PAGESIZE
#endif
#else
#error "no definition for MCU available in chipdef.h"
#endif
#endif
#ifndef CHIPDEF_H
#define CHIPDEF_H
#include <avr/io.h>
#if defined (SPMCSR)
#define SPM_REG SPMCSR
#elif defined (SPMCR)
#define SPM_REG SPMCR
#else
#error "AVR processor does not provide bootloader support!"
#endif
#define APP_END (FLASHEND - (BOOTSIZE * 2))
#if (SPM_PAGESIZE > UINT8_MAX)
typedef uint16_t pagebuf_t;
#else
typedef uint8_t pagebuf_t;
#endif
#if defined(__AVR_ATmega169__)
#include "mega169.h"
#elif defined(__AVR_ATmega16__)
#include "mega16.h"
#elif defined(__AVR_ATmega162__)
#include "mega162.h"
#elif defined(__AVR_ATmega8__)
#include "mega8.h"
#elif defined(__AVR_ATmega32__)
#include "mega32.h"
#elif defined(__AVR_ATmega324P__)
#include "mega324p.h"
#elif defined(__AVR_ATmega64__)
#include "mega64.h"
#elif defined(__AVR_ATmega644__)
#include "mega644.h"
#elif defined(__AVR_ATmega644P__)
#include "mega644p.h"
#elif defined(__AVR_ATmega128__)
#include "mega128.h"
#elif defined(__AVR_AT90CAN128__)
#include "mega128can.h"
#else
#error "no definition for MCU available in chipdef.h"
#endif
#endif

169
ldscripts_no_vector/avr1.x Normal file
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/* Default linker script, for normal executables */
OUTPUT_FORMAT("elf32-avr","elf32-avr","elf32-avr")
OUTPUT_ARCH(avr:1)
MEMORY
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data (rw!x) : ORIGIN = 0x800060, LENGTH = 0
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__data_load_start = LOADADDR(.data);
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ldscripts_no_vector/avr2.x Normal file
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/* Default linker script, for normal executables */
OUTPUT_FORMAT("elf32-avr","elf32-avr","elf32-avr")
OUTPUT_ARCH(avr:2)
MEMORY
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169
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@ -0,0 +1,169 @@
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169
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/* MODIFIED LINKER SCRIPT - BOOTLOADER: without .vectors */
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172
ldscripts_no_vector/avr5.x Normal file
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/* MODIFIED LINKER SCRIPT - BOOTLOADER: without .vectors */
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27
lowlevel.c
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@ -1,27 +0,0 @@
//
// Low-level routines to read lock and fuse-bytes
//
// Copyright (C) 2/2005 Martin Thomas, Kaiserslautern, Germany
//
#include "lowlevel.h"
unsigned char read_fuse_lock(unsigned short addr, unsigned char mode)
{
unsigned char retval;
asm volatile
(
"movw r30, %3\n\t" /* Z to addr */ \
"sts %0, %2\n\t" /* set mode in SPM_REG */ \
"lpm\n\t" /* load fuse/lock value into r0 */ \
"mov %1,r0\n\t" /* save return value */ \
: "=m" (SPM_REG),
"=r" (retval)
: "r" (mode),
"r" (addr)
: "r30", "r31", "r0"
);
return retval;
}

18
lowlevel.h
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@ -1,18 +0,0 @@
#ifndef LOWLEVEL_H
#define LOWLEVEL_H
#include <avr/io.h>
/* Check for SPM Control Register in processor. */
#if defined (SPMCSR)
# define SPM_REG SPMCSR
#elif defined (SPMCR)
# define SPM_REG SPMCR
#else
# error AVR processor does not provide bootloader support!
#endif
unsigned char read_fuse_lock(unsigned short addr, unsigned char mode);
#endif

BIN
main Normal file
View File

Binary file not shown.

867
main.c
View File

@ -1,115 +1,324 @@
/*****************************************************************************
*
* AVRPROG compatible boot-loader
* Version : 0.7 (Feb. 2005)
* Compiler : avr-gcc 3.4.1 / avr-libc 1.0.2
* Version : 0.85 (Dec. 2008)
* Compiler : avr-gcc 4.1.2 / avr-libc 1.4.6
* size : depends on features and startup ( minmal features < 512 words)
* by : Martin Thomas, Kaiserslautern, Germany
* eversmith@heizung-thomas.de
* Additional code and improvements contributed by:
* - Uwe Bonnes
* - Bjoern Riemer
* - Olaf Rempel
*
* License : Copyright (c) 2005 Martin Thomas
* Free to use. You have to mention the copyright
* owners in source-code and documentation of derived
* work. No warranty.
* License : Copyright (c) 2006-2008 M. Thomas, U. Bonnes, O. Rempel
* Free to use. You have to mention the copyright
* owners in source-code and documentation of derived
* work. No warranty! (Yes, you can insert the BSD
* license here)
*
* Tested with ATmega8, ATmega16, ATmega32, ATmega128
* Tested with ATmega8, ATmega16, ATmega162, ATmega32, ATmega324P,
* ATmega644, ATmega644P, ATmega128, AT90CAN128
*
* - based on the Butterfly Bootloader-Code
* Copyright (C) 1996-1998 Atmel Corporation
* Author(s) : BBrandal, PKastnes, ARodland, LHM
* The orignal code has been made available by ATMEL together with the
* Butterfly application code. Since ATMEL.NO had no problem with
* the application gcc-port they hopefully will not have any concerns about
* publishing this port. A lot of things have been change but the ATMEL
* "skeleton" is still in this code. Make sure to keep the copyright notice
* in derived work to avoid trouble.
*
* - based on boot.h from the avr-libc (c) Eric Weddington
* - Initial versions have been based on the Butterfly bootloader-code
* by Atmel Corporation (Authors: BBrandal, PKastnes, ARodland, LHM)
*
****************************************************************************
*
* The boot interrupt vector is included (this bootloader is completly in
* ".text" section). If you need this space for further functions you have to
* add a separate section for the bootloader-functions and add an attribute
* for this section to _all_ function prototypes of functions in the loader.
* With this the interrupt vector will be placed at .0000 and the bootloader
* code (without interrupt vector) at the adress you define in the linker
* options for the newly created section. See the avr-libc FAQ, the avr-
* libc's avr/boot.h documentation and the makefile for further details.
* See the makefile and readme.txt for information on how to adapt
* the linker-settings to the selected Boot Size (BOOTSIZE=xxxx) and
* the MCU-type. Other configurations futher down in this file.
*
* See the makefile for information how to adopt the linker-settings to
* the selected Boot Size (_Bxxx below)
*
* With BOOT_SIMPLE this bootloader has 0x3DE bytes size and should fit
* into a 512word bootloader-section.
*
* Set AVR clock-frequency and the baudrate below, set MCU-type in
* makefile.
* With BOOT_SIMPLE, minimal features and discarded int-vectors
* this bootloader has should fit into a a 512 word (1024, 0x400 bytes)
* bootloader-section.
*
****************************************************************************/
/*
Does not work reliably so far:
- lock bits set
TODOs:
- check lock-bits set
- __bad_interrupt still linked even with modified
linker-scripts which needs a default-handler,
"wasted": 3 words for AVR5 (>8kB), 2 words for AVR4
- Check watchdog-disable-function in avr-libc.
*/
// tabsize: 4
/* MCU frequency */
#ifndef F_CPU
// #define F_CPU 7372800
#define F_CPU (7372800/2)
#endif
/* UART Baudrate */
// #define BAUDRATE 9600
// #define BAUDRATE 19200
#define BAUDRATE 115200
/* use "Double Speed Operation" */
//#define UART_DOUBLESPEED
/* use second UART on mega128 / can128 / mega162 / mega324p / mega644p */
//#define UART_USE_SECOND
/* Device-Type:
For AVRProg the BOOT-option is prefered
which is the "correct" value for a bootloader.
avrdude may only detect the part-code for ISP */
#define DEVTYPE DEVTYPE_BOOT
// #define DEVTYPE DEVTYPE_ISP
/*
* Pin "STARTPIN" on port "STARTPORT" in this port has to grounded
* (active low) to start the bootloader
*/
#define BLPORT PORTC
#define BLDDR DDRC
#define BLPIN PINC
#define BLPNUM PINC7
/*
* Define if Watchdog-Timer should be disable at startup
*/
#define DISABLE_WDT_AT_STARTUP
/*
* Watchdog-reset is issued at exit
* define the timeout-value here (see avr-libc manual)
*/
#define EXIT_WDT_TIME WDTO_250MS
/*
* Select startup-mode
* SIMPLE-Mode - Jump to bootloader main BL-loop if key is
* pressed (Pin grounded) "during" reset or jump to the
* application if the pin is not grounded. The internal
* pull-up resistor is enabled during the startup and
* gets disabled before the application is started.
* POWERSAVE-Mode - Startup is separated in two loops
* which makes power-saving a little easier if no firmware
* is on the chip. Needs more memory
* BOOTICE-Mode - to flash the JTAGICE upgrade.ebn file.
* No startup-sequence in this mode. Jump directly to the
* parser-loop on reset
* F_CPU in BOOTICEMODE must be 7372800 Hz to be compatible
* with the org. JTAGICE-Firmware
* WAIT-mode waits 1 sec for the defined character if nothing
* is recived then the user prog is started.
*/
#define START_SIMPLE
//#define START_WAIT
//#define START_POWERSAVE
//#define START_BOOTICE
/* character to start the bootloader in mode START_WAIT */
#define START_WAIT_UARTCHAR 'S'
/* wait-time for START_WAIT mode ( t = WAIT_TIME * 10ms ) */
#define WAIT_VALUE 100 /* here: 100*10ms = 1000ms = 1sec */
/*
* enable/disable readout of fuse and lock-bits
* (AVRPROG has to detect the AVR correctly by device-code
* to show the correct information).
*/
//#define ENABLEREADFUSELOCK
/* enable/disable write of lock-bits
* WARNING: lock-bits can not be reseted by bootloader (as far as I know)
* Only protection no unprotection, "chip erase" from bootloader only
* clears the flash but does no real "chip erase" (this is not possible
* with a bootloader as far as I know)
* Keep this undefined!
*/
//#define WRITELOCKBITS
/*
* define the following if the bootloader should not output
* itself at flash read (will fake an empty boot-section)
*/
#define READ_PROTECT_BOOTLOADER
// programmers-notepad tabsize 4
#define VERSION_HIGH '0'
#define VERSION_LOW '7'
#define VERSION_LOW '8'
#include <inttypes.h>
#define GET_LOCK_BITS 0x0001
#define GET_LOW_FUSE_BITS 0x0000
#define GET_HIGH_FUSE_BITS 0x0003
#define GET_EXTENDED_FUSE_BITS 0x0002
#ifdef UART_DOUBLESPEED
// #define UART_CALC_BAUDRATE(baudRate) (((F_CPU*10UL) / ((baudRate) *8UL) +5)/10 -1)
#define UART_CALC_BAUDRATE(baudRate) ((uint32_t)((F_CPU) + ((uint32_t)baudRate * 4UL)) / ((uint32_t)(baudRate) * 8UL) - 1)
#else
// #define UART_CALC_BAUDRATE(baudRate) (((F_CPU*10UL) / ((baudRate)*16UL) +5)/10 -1)
#define UART_CALC_BAUDRATE(baudRate) ((uint32_t)((F_CPU) + ((uint32_t)baudRate * 8UL)) / ((uint32_t)(baudRate) * 16UL) - 1)
#endif
#include <stdint.h>
#include <avr/io.h>
#include <avr/interrupt.h>
#include <avr/wdt.h>
#include <avr/boot.h>
#include <avr/pgmspace.h>
// function not found in boot.h to read lock/fuses
#include "lowlevel.h"
#ifndef XTAL
#warning "Set XTAL in Makefile"
#endif
#ifdef START_BOOTICE
#warning "Using START_BOOTICE"
#if XTAL == 7372800
#else
#warning "BOOTICE mode - External Crystal/Oszillator must be 7,3728 MHz"
#undef XTAL
#define XTAL 7372800
#endif
#endif
// UART handling - some definitions from P. Fleury's Library - thanks
#include "uart.h"
/* enable/disable readout of fuse and lock-bits
(will not work for Mega169 since not supported by AVRPROG 1.37 */
#define ENABLEREADFUSELOCK
/* enable/disable write of lock-bits
WARNING: lock-bits can not be reseted by bootloader (as far as I know)
Only protection no unprotection, "chip erase" from bootloader only
clears the flash but does no real "chip erase" (this is not possible
with a bootloader as far as I know)
Keep this undefined!
*/
// #define WRITELOCKBITS
#include <avr/eeprom.h>
#include <avr/interrupt.h>
#include <util/delay.h>
#include "chipdef.h"
#define UART_RX_BUFFER_SIZE SPM_PAGESIZE
unsigned char gBuffer[UART_RX_BUFFER_SIZE];
uint8_t gBuffer[SPM_PAGESIZE];
#define eeprom_is_ready() bit_is_clear(EECR, EEWE)
#define my_eeprom_busy_wait() do{}while(!eeprom_is_ready())
#if defined(BOOTLOADERHASNOVECTORS)
#warning "This Bootloader does not link interrupt vectors - see makefile"
/* make the linker happy - it wants to see __vector_default */
// void __vector_default(void) { ; }
void __vector_default(void) { ; }
#endif
unsigned char BufferLoad(unsigned int , unsigned char ) ;
void BlockRead(unsigned int , unsigned char ) ;
static void sendchar(uint8_t data)
{
while (!(UART_STATUS & (1<<UART_TXREADY)));
UART_DATA = data;
}
uint32_t address;
unsigned char device;
static uint8_t recvchar(void)
{
while (!(UART_STATUS & (1<<UART_RXREADY)));
return UART_DATA;
}
void send_boot(void)
static inline void eraseFlash(void)
{
// erase only main section (bootloader protection)
uint32_t addr = 0;
while (APP_END > addr) {
boot_page_erase(addr); // Perform page erase
boot_spm_busy_wait(); // Wait until the memory is erased.
addr += SPM_PAGESIZE;
}
boot_rww_enable();
}
static inline void recvBuffer(pagebuf_t size)
{
pagebuf_t cnt;
uint8_t *tmp = gBuffer;
for (cnt = 0; cnt < sizeof(gBuffer); cnt++) {
*tmp++ = (cnt < size) ? recvchar() : 0xFF;
}
}
static inline uint16_t writeFlashPage(uint16_t waddr, pagebuf_t size)
{
uint32_t pagestart = (uint32_t)waddr<<1;
uint32_t baddr = pagestart;
uint16_t data;
uint8_t *tmp = gBuffer;
do {
data = *tmp++;
data |= *tmp++ << 8;
boot_page_fill(baddr, data); // call asm routine.
baddr += 2; // Select next word in memory
size -= 2; // Reduce number of bytes to write by two
} while (size); // Loop until all bytes written
boot_page_write(pagestart);
boot_spm_busy_wait();
boot_rww_enable(); // Re-enable the RWW section
return baddr>>1;
}
static inline uint16_t writeEEpromPage(uint16_t address, pagebuf_t size)
{
uint8_t *tmp = gBuffer;
do {
eeprom_write_byte( (uint8_t*)address, *tmp++ );
address++; // Select next byte
size--; // Decreas number of bytes to write
} while (size); // Loop until all bytes written
// eeprom_busy_wait();
return address;
}
static inline uint16_t readFlashPage(uint16_t waddr, pagebuf_t size)
{
uint32_t baddr = (uint32_t)waddr<<1;
uint16_t data;
do {
#ifndef READ_PROTECT_BOOTLOADER
#warning "Bootloader not read-protected"
#if defined(RAMPZ)
data = pgm_read_word_far(baddr);
#else
data = pgm_read_word_near(baddr);
#endif
#else
// don't read bootloader
if ( baddr < APP_END ) {
#if defined(RAMPZ)
data = pgm_read_word_far(baddr);
#else
data = pgm_read_word_near(baddr);
#endif
}
else {
data = 0xFFFF; // fake empty
}
#endif
sendchar(data); // send LSB
sendchar((data >> 8)); // send MSB
baddr += 2; // Select next word in memory
size -= 2; // Subtract two bytes from number of bytes to read
} while (size); // Repeat until block has been read
return baddr>>1;
}
static inline uint16_t readEEpromPage(uint16_t address, pagebuf_t size)
{
do {
sendchar( eeprom_read_byte( (uint8_t*)address ) );
address++;
size--; // Decrease number of bytes to read
} while (size); // Repeat until block has been read
return address;
}
#if defined(ENABLEREADFUSELOCK)
static uint8_t read_fuse_lock(uint16_t addr)
{
uint8_t mode = (1<<BLBSET) | (1<<SPMEN);
uint8_t retval;
asm volatile
(
"movw r30, %3\n\t" /* Z to addr */ \
"sts %0, %2\n\t" /* set mode in SPM_REG */ \
"lpm\n\t" /* load fuse/lock value into r0 */ \
"mov %1,r0\n\t" /* save return value */ \
: "=m" (SPM_REG),
"=r" (retval)
: "r" (mode),
"r" (addr)
: "r30", "r31", "r0"
);
return retval;
}
#endif
static void send_boot(void)
{
sendchar('A');
sendchar('V');
@ -120,348 +329,254 @@ void send_boot(void)
sendchar('T');
}
void (*jump_to_app)(void) = 0x0000;
static void (*jump_to_app)(void) = 0x0000;
int main(void)
{
unsigned tempi;
char val;
#ifdef START_POWERSAVE
char OK = 1;
#endif
cli();
MCUCR = (1<<IVCE);
MCUCR = (1<<IVSEL); //move interruptvectors to the Boot sector
uint16_t address = 0;
uint8_t device = 0, val;
BLDDR &= ~(1<<BLPNUM); // set as Input
#ifdef DISABLE_WDT_AT_STARTUP
#ifdef WDT_OFF_SPECIAL
#warning "using target specific watchdog_off"
bootloader_wdt_off();
#else
cli();
wdt_reset();
wdt_disable();
#endif
#endif
#ifdef START_POWERSAVE
uint8_t OK = 1;
#endif
BLDDR &= ~(1<<BLPNUM); // set as Input
BLPORT |= (1<<BLPNUM); // Enable pullup
// Set baud rate
UART_BAUD_HIGH = (UART_CALC_BAUDRATE(BAUDRATE)>>8) & 0xFF;
UART_BAUD_LOW = (UART_CALC_BAUDRATE(BAUDRATE) & 0xFF);
#ifdef UART_DOUBLESPEED
UART_STATUS = ( 1<<UART_DOUBLE );
#endif
UART_CTRL = UART_CTRL_DATA;
UART_CTRL2 = UART_CTRL2_DATA;
USART_Init(UART_BAUD_SELECT(BAUDRATE,XTAL),UARTSINGLE); // single speed
// USART_Init(UART_BAUD_SELECT(BAUDRATE/2,XTAL),UARTDOUBLE); // double speed
#ifdef START_POWERSAVE
/*
#if defined(START_POWERSAVE)
/*
This is an adoption of the Butterfly Bootloader startup-sequence.
It may look a little strange but separating the login-loop from
the main parser-loop gives a lot a possibilities (timeout, sleep-modes
etc.).
*/
for(;OK;)
{
if((BLPIN & (1<<BLPNUM)))
{
*/
for(;OK;) {
if ((BLPIN & (1<<BLPNUM))) {
// jump to main app if pin is not grounded
BLPORT &= ~(1<<BLPNUM); // set to default
MCUCR = (1<<IVCE);
MCUCR = (0<<IVSEL); // move interruptvectors to the Application sector
jump_to_app(); // Jump to application sector
}
else
{
val = recchar();
if( val == 0x1B ) /* ESC */
{ // AVRPROG connection
while (val != 'S') // Wait for signon
{
val = recchar();
}
send_boot(); // Report signon
BLPORT &= ~(1<<BLPNUM); // set to default
#ifdef UART_DOUBLESPEED
UART_STATUS &= ~( 1<<UART_DOUBLE );
#endif
jump_to_app(); // Jump to application sector
} else {
val = recvchar();
/* ESC */
if (val == 0x1B) {
// AVRPROG connection
// Wait for signon
while (val != 'S')
val = recvchar();
send_boot(); // Report signon
OK = 0;
}
else
} else {
sendchar('?');
}
}
// Power-Save code here
}
#elif defined(START_SIMPLE)
if((BLPIN & (1<<BLPNUM)))
{
// jump to main app if pin is not grounded
BLPORT &= ~(1<<BLPNUM); // set to default
MCUCR = (1<<IVCE);
MCUCR = (0<<IVSEL); //move interruptvectors to the Application sector
jump_to_app(); // Jump to application sector
#elif defined(START_SIMPLE)
if ((BLPIN & (1<<BLPNUM))) {
// jump to main app if pin is not grounded
BLPORT &= ~(1<<BLPNUM); // set to default
#ifdef UART_DOUBLESPEED
UART_STATUS &= ~( 1<<UART_DOUBLE );
#endif
jump_to_app(); // Jump to application sector
}
#elif defined(START_BOOTICE)
#warning "BOOTICE mode - no startup-condition"
#else
#error "Select START_ condition for bootloader in main.c"
#endif
#elif defined(START_WAIT)
for(;;)
{
val=recchar();
if(val=='a') //Autoincrement?
{
sendchar('Y'); //Autoincrement is quicker
}
else if(val=='A') //write address
{
address=recchar(); //read address 8 MSB
address=(address<<8)|recchar();
address=address<<1; // !! convert from word address to byte address
uint16_t cnt = 0;
while (1) {
if (UART_STATUS & (1<<UART_RXREADY))
if (UART_DATA == START_WAIT_UARTCHAR)
break;
if (cnt++ >= WAIT_VALUE) {
BLPORT &= ~(1<<BLPNUM); // set to default
jump_to_app(); // Jump to application sector
}
_delay_ms(10);
}
send_boot();
#elif defined(START_BOOTICE)
#warning "BOOTICE mode - no startup-condition"
#else
#error "Select START_ condition for bootloader in main.c"
#endif
for(;;) {
val = recvchar();
// Autoincrement?
if (val == 'a') {
sendchar('Y'); // Autoincrement is quicker
//write address
} else if (val == 'A') {
address = recvchar(); //read address 8 MSB
address = (address<<8) | recvchar();
sendchar('\r');
}
else if(val=='b')
{ // Buffer load support
// Buffer load support
} else if (val == 'b') {
sendchar('Y'); // Report buffer load supported
sendchar((UART_RX_BUFFER_SIZE >> 8) & 0xFF);
// Report buffer size in bytes
sendchar(UART_RX_BUFFER_SIZE & 0xFF);
}
sendchar((sizeof(gBuffer) >> 8) & 0xFF); // Report buffer size in bytes
sendchar(sizeof(gBuffer) & 0xFF);
else if(val=='B') // Start buffer load
{
tempi = recchar() << 8; // Load high byte of buffersize
tempi |= recchar(); // Load low byte of buffersize
val = recchar(); // Load memory type ('E' or 'F')
sendchar (BufferLoad(tempi,val));
// Start downloading of buffer
}
else if(val == 'g') // Block read
{
tempi = (recchar() << 8) | recchar();
// Start buffer load
} else if (val == 'B') {
pagebuf_t size;
size = recvchar() << 8; // Load high byte of buffersize
size |= recvchar(); // Load low byte of buffersize
val = recvchar(); // Load memory type ('E' or 'F')
recvBuffer(size);
val = recchar(); // Get memtype
BlockRead(tempi,val); // Perform the block read
}
else if(val=='e') //Chip erase
{
if (device == devtype)
{
// erase only main section (bootloader protection)
address = 0;
while ( APP_END > address )
{
boot_page_erase(address); // Perform page erase
boot_spm_busy_wait(); // Wait until the memory is erased.
address += SPM_PAGESIZE;
if (device == DEVTYPE) {
if (val == 'F') {
address = writeFlashPage(address, size);
} else if (val == 'E') {
address = writeEEpromPage(address, size);
}
sendchar('\r');
} else {
sendchar(0);
}
boot_rww_enable();
sendchar('\r');
}
else if(val=='E') //Exit upgrade
{
wdt_enable(WDTO_15MS); // Enable Watchdog Timer to give reset
// Block read
} else if (val == 'g') {
pagebuf_t size;
size = recvchar() << 8; // Load high byte of buffersize
size |= recvchar(); // Load low byte of buffersize
val = recvchar(); // Get memtype
if (val == 'F') {
address = readFlashPage(address, size);
} else if (val == 'E') {
address = readEEpromPage(address, size);
}
// Chip erase
} else if (val == 'e') {
if (device == DEVTYPE) {
eraseFlash();
}
sendchar('\r');
}
#ifdef WRITELOCKBITS
#warning "Extension 'WriteLockBits' enabled"
// TODO: does not work reliably
else if(val=='l') // write lockbits
{
if (device == devtype)
{
// write_lock_bits(recchar());
boot_lock_bits_set(recchar()); // boot.h takes care of mask
// Exit upgrade
} else if (val == 'E') {
wdt_enable(EXIT_WDT_TIME); // Enable Watchdog Timer to give reset
sendchar('\r');
#ifdef WRITELOCKBITS
#warning "Extension 'WriteLockBits' enabled"
// TODO: does not work reliably
// write lockbits
} else if (val == 'l') {
if (device == DEVTYPE) {
// write_lock_bits(recvchar());
boot_lock_bits_set(recvchar()); // boot.h takes care of mask
boot_spm_busy_wait();
}
sendchar('\r');
}
#endif
else if(val=='P') // Enter programming mode
{
#endif
// Enter programming mode
} else if (val == 'P') {
sendchar('\r');
}
else if(val=='L') // Leave programming mode
{
// Leave programming mode
} else if (val == 'L') {
sendchar('\r');
}
else if (val=='p') // return programmer type
{
sendchar('S'); // always serial programmer
}
// return programmer type
} else if (val == 'p') {
sendchar('S'); // always serial programmer
#ifdef ENABLEREADFUSELOCK
#warning "Extension 'ReadFuseLock' enabled"
else if(val=='F') // read "low" fuse bits
{
sendchar( read_fuse_lock(0x0000, _BV(BLBSET)|_BV(SPMEN)) );
}
// read "low" fuse bits
} else if (val == 'F') {
sendchar(read_fuse_lock(GET_LOW_FUSE_BITS));
else if(val=='r') // read lock bits
{
sendchar( read_fuse_lock(0x0001, _BV(BLBSET)|_BV(SPMEN)) );
}
// read lock bits
} else if (val == 'r') {
sendchar(read_fuse_lock(GET_LOCK_BITS));
else if(val=='N') // read high fuse bits
{
sendchar( read_fuse_lock(0x0003,_BV(BLBSET)|_BV(SPMEN)) );
}
// read high fuse bits
} else if (val == 'N') {
sendchar(read_fuse_lock(GET_HIGH_FUSE_BITS));
else if(val=='Q') // read extended fuse bits
{
sendchar( read_fuse_lock(0x0002,_BV(BLBSET)|_BV(SPMEN)) );
}
#endif
// end of ENABLEREADFUSELOCK section
// read extended fuse bits
} else if (val == 'Q') {
sendchar(read_fuse_lock(GET_EXTENDED_FUSE_BITS));
#endif
else if(val=='t') // Return device type
{
sendchar(devtype);
// Return device type
} else if (val == 't') {
sendchar(DEVTYPE);
sendchar(0);
}
else if ((val=='x')||(val=='y')) // clear and set LED ignored
{
recchar();
// clear and set LED ignored
} else if ((val == 'x') || (val == 'y')) {
recvchar();
sendchar('\r');
}
else if (val=='T') // set device
{
device = recchar();
// set device
} else if (val == 'T') {
device = recvchar();
sendchar('\r');
}
else if (val=='S') // Return software identifier
{
// Return software identifier
} else if (val == 'S') {
send_boot();
}
else if (val=='V') // Return Software Version
{
// Return Software Version
} else if (val == 'V') {
sendchar(VERSION_HIGH);
sendchar(VERSION_LOW);
}
else if (val=='s') // Return Signature Byte
{
sendchar(sig_byte1);
sendchar(sig_byte2);
sendchar(sig_byte3);
}
// Return Signature Bytes (it seems that
// AVRProg expects the "Atmel-byte" 0x1E last
// but shows it first in the dialog-window)
} else if (val == 's') {
sendchar(SIG_BYTE3);
sendchar(SIG_BYTE2);
sendchar(SIG_BYTE1);
else if(val != 0x1b) /* ESC */
{
/* ESC */
} else if(val != 0x1b) {
sendchar('?');
}
} // end of "parser" for-loop
}
}
return 0;
}
unsigned char BufferLoad(unsigned int size, unsigned char mem)
{
unsigned int data, cnt;
uint32_t tempaddress;
for (cnt=0; cnt<UART_RX_BUFFER_SIZE; cnt++) {
if (cnt<size) gBuffer[cnt]=recchar();
else gBuffer[cnt]=0xFF;
}
cnt=0;
tempaddress = address; // Store address in page
my_eeprom_busy_wait();
if (device == devtype)
{
if (mem == 'F') // Flash
{
do {
data=gBuffer[cnt++];
data|=(gBuffer[cnt++]<<8);
boot_page_fill(address,data);
//call asm routine.
address=address+2; // Select next word in memory
size -= 2; // Reduce number of bytes to write by two
} while(size); // Loop until all bytes written
/* commented out since not compatible with mega8 -
secondary benefit: saves memory
tempaddress &= 0xFF80; // Ensure the address points to the first byte in the page
*/
boot_page_write(tempaddress);
boot_spm_busy_wait();
boot_rww_enable(); //Re-enable the RWW section
/* commented out since not compatible with mega8
if (address != (address & 0xFF80))
{ // Ensure that the address points to the beginning of the next page
address &= 0xFF80;
address += SPM_PAGESIZE;
}
*/
} // End FLASH
if (mem == 'E') // Start EEPROM
{
address>>=1;
do {
EEARL = address; // Setup EEPROM address
EEARH = (address >> 8);
address++; // Select next byte
EEDR=gBuffer[cnt++];
EECR |= (1<<EEMWE); // Write data into EEPROM
EECR |= (1<<EEWE);
while (EECR & (1<<EEWE)); // Wait for EEPROM write to finish
size--; // Decreas number of bytes to write
} while(size); // Loop until all bytes written
}
return '\r'; // Report programming OK
}
return 0; // Report programming failed
}
void BlockRead(unsigned int size, unsigned char mem)
{
unsigned int data;
my_eeprom_busy_wait();
if (mem == 'E') // Read EEPROM
{
// address>>=1; // not needed here - hmm, somehow inconsistant TODO
do {
EEARL = address; // Setup EEPROM address
EEARH = (address >> 8);
address++; // Select next EEPROM byte
EECR |= (1<<EERE); // Read EEPROM
sendchar(EEDR); // Transmit EEPROM data to PC
size--; // Decrease number of bytes to read
} while (size); // Repeat until all block has been read
}
else // Read Flash
{
do {
#if defined(RAMPZ)
data = pgm_read_word_far(address);
#else
data = pgm_read_word_near((uint16_t)address);
#endif
sendchar((unsigned char)data); //send LSB
sendchar((unsigned char)(data >> 8)); //send MSB
address += 2; // Select next word in memory
size -= 2; // Subtract two bytes from number of bytes to read
} while (size); // Repeat until all block has been read
}
}

341
makefile
View File

@ -1,5 +1,8 @@
# Hey Emacs, this is a -*- makefile -*-
#
# Makefile for the AVRProg-compatible Bootloader
#
# based on the
# WinAVR Sample makefile written by Eric B. Weddington, Jörg Wunsch, et al.
# Released to the Public Domain
# Please read the make user manual!
@ -34,89 +37,236 @@
# user defined values
# MCU name
## MCU = atmega16
## MCU = atmega8
## MCU = atmega16
## MCU = atmega162
## MCU = atmega169
## MCU = atmega32
MCU = at90can128
XTAL=16000000
BAUDRATE=115200
#Pin "STARTPIN" on port "STARTPORT" in this port has to grounded
# (active low) to start the bootloader
BLPORT = PORTB
BLDDR = DDRB
BLPIN = PINB
BLPNUM = PINB0
# Select startup-mode
# * SIMPLE-Mode - Jump to bootloader main BL-loop if key is
# pressed (Pin grounded) "during" reset or jump to the
# application if the pin is not grounded (=pulled up by
# internal pull-up-resistor)
# * POWERSAVE-Mode - Startup is separated in two loops
# which makes power-saving a little easier if no firmware
# is on the chip. Needs more memory
# * BOOTICE-Mode - to flash the JTAGICE upgrade.ebn file.
# No startup-sequence in this mode. Jump directly to the
# parser-loop on reset
# XTAL in BOOTICEMODE must be 7372800 Hz to be compatible
# with the org. JTAGICE-Firmware */
STARTMODE=START_SIMPLE
##STARTMODE=START_POWERSAVE
##STARTMODE=START_BOOTICE
#/* Select Boot Size in Words (select one, comment out the others) */
## NO! BOOTSIZE=_B128
## NO! BOOTSIZE=_B256
## MAYBE: BOOTSIZE=_B512
BOOTSIZE=_B1024
##BOOTSIZE=_B2048
MCU = atmega324p
## MCU = atmega64
## MCU = atmega644
## MCU = atmega644p
## MCU = atmega128
## MCU = at90can128
################## BOOTLOADER ######################
# mt: Boot loader support. So far not done with a separate section
# to get the interrupt vector into the bootloader area.
# to get the interrupt vector into the bootloader area (for BOOTINTVEC=yes).
# Bootloader address in datasheet and stk500 is given as
# "word", gcc toolchain needs "byte"-address
# "word", gcc toolchain needs "byte"-address
# (see LDFLAGS further down)
# 0x1C00*2=0x3800 for ATmega16 1024 words Boot Size
ifeq ($(MCU), atmega16)
MT_BOOTLOADER_ADDRESS = 3800
endif
#/* Select Boot Size in Words (select one, comment out the others) */
## NO! BOOTSIZE=128
## NO! BOOTSIZE=256
## BOOTSIZE=512
BOOTSIZE=1024
## BOOTSIZE=2048
# 0x0C00*2=0x1800 for ATmega8 1024 words Boot Size
# /* Select if bootloader should include the inverrupt-vectors
# when selecting 'no' here, the bootloader must not use
# any interrupts and the modified linker-scripts are used. */
##BOOTINTVEC=yes
BOOTINTVEC=no
##
ifeq ($(MCU), atmega8)
MT_BOOTLOADER_ADDRESS = 1800
BFD_MACH=avr4
ifeq ($(BOOTSIZE), 128)
MT_BOOTLOADER_ADDRESS = 0x1F00
endif
ifeq ($(BOOTSIZE), 256)
MT_BOOTLOADER_ADDRESS = 0x1E00
endif
ifeq ($(BOOTSIZE), 512)
MT_BOOTLOADER_ADDRESS = 0x1C00
endif
ifeq ($(BOOTSIZE), 1024)
MT_BOOTLOADER_ADDRESS = 0x1800
endif
endif
# 0x3C00*2=0x7800 for ATmega32 1024 words Boot Size
##
ifeq ($(MCU), atmega16)
BFD_MACH=avr5
ifeq ($(BOOTSIZE), 128)
MT_BOOTLOADER_ADDRESS = 0x3F00
endif
ifeq ($(BOOTSIZE), 256)
MT_BOOTLOADER_ADDRESS = 0x3E00
endif
ifeq ($(BOOTSIZE), 512)
MT_BOOTLOADER_ADDRESS = 0x3C00
endif
ifeq ($(BOOTSIZE), 1024)
MT_BOOTLOADER_ADDRESS = 0x3800
endif
endif
##
ifeq ($(MCU), atmega162)
BFD_MACH=avr5
ifeq ($(BOOTSIZE), 128)
MT_BOOTLOADER_ADDRESS = 0x3F00
endif
ifeq ($(BOOTSIZE), 256)
MT_BOOTLOADER_ADDRESS = 0x3E00
endif
ifeq ($(BOOTSIZE), 512)
MT_BOOTLOADER_ADDRESS = 0x3C00
endif
ifeq ($(BOOTSIZE), 1024)
MT_BOOTLOADER_ADDRESS = 0x3800
endif
endif
##
ifeq ($(MCU), atmega169)
BFD_MACH=avr5
ifeq ($(BOOTSIZE), 128)
MT_BOOTLOADER_ADDRESS = 0x3F00
endif
ifeq ($(BOOTSIZE), 256)
MT_BOOTLOADER_ADDRESS = 0x3E00
endif
ifeq ($(BOOTSIZE), 512)
MT_BOOTLOADER_ADDRESS = 0x3C00
endif
ifeq ($(BOOTSIZE), 1024)
MT_BOOTLOADER_ADDRESS = 0x3800
endif
endif
##
ifeq ($(MCU), atmega32)
MT_BOOTLOADER_ADDRESS = 7800
BFD_MACH=avr5
ifeq ($(BOOTSIZE), 256)
MT_BOOTLOADER_ADDRESS = 0x7E00
endif
ifeq ($(BOOTSIZE), 512)
MT_BOOTLOADER_ADDRESS = 0x7C00
endif
ifeq ($(BOOTSIZE), 1024)
MT_BOOTLOADER_ADDRESS = 0x7800
endif
ifeq ($(BOOTSIZE), 2048)
MT_BOOTLOADER_ADDRESS = 0x7000
endif
endif
# 0xFC00*2=0x1F800 for ATmega128 1024 words Boot Size
##
ifeq ($(MCU), atmega324p)
BFD_MACH=avr5
ifeq ($(BOOTSIZE), 256)
MT_BOOTLOADER_ADDRESS = 0x7E00
endif
ifeq ($(BOOTSIZE), 512)
MT_BOOTLOADER_ADDRESS = 0x7C00
endif
ifeq ($(BOOTSIZE), 1024)
MT_BOOTLOADER_ADDRESS = 0x7800
endif
ifeq ($(BOOTSIZE), 2048)
MT_BOOTLOADER_ADDRESS = 0x7000
endif
endif
##
ifeq ($(MCU), atmega64)
BFD_MACH=avr5
ifeq ($(BOOTSIZE), 512)
MT_BOOTLOADER_ADDRESS = 0xFC00
endif
ifeq ($(BOOTSIZE), 1024)
MT_BOOTLOADER_ADDRESS = 0xF800
endif
ifeq ($(BOOTSIZE), 2048)
MT_BOOTLOADER_ADDRESS = 0xF000
endif
ifeq ($(BOOTSIZE), 4096)
MT_BOOTLOADER_ADDRESS = 0xE000
endif
endif
##
ifeq ($(MCU), atmega644)
BFD_MACH=avr5
ifeq ($(BOOTSIZE), 512)
MT_BOOTLOADER_ADDRESS = 0xFC00
endif
ifeq ($(BOOTSIZE), 1024)
MT_BOOTLOADER_ADDRESS = 0xF800
endif
ifeq ($(BOOTSIZE), 2048)
MT_BOOTLOADER_ADDRESS = 0xF000
endif
ifeq ($(BOOTSIZE), 4096)
MT_BOOTLOADER_ADDRESS = 0xE000
endif
endif
##
ifeq ($(MCU), atmega644p)
BFD_MACH=avr5
ifeq ($(BOOTSIZE), 512)
MT_BOOTLOADER_ADDRESS = 0xFC00
endif
ifeq ($(BOOTSIZE), 1024)
MT_BOOTLOADER_ADDRESS = 0xF800
endif
ifeq ($(BOOTSIZE), 2048)
MT_BOOTLOADER_ADDRESS = 0xF000
endif
ifeq ($(BOOTSIZE), 4096)
MT_BOOTLOADER_ADDRESS = 0xE000
endif
endif
##
ifeq ($(MCU), atmega128)
MT_BOOTLOADER_ADDRESS = 1F800
BFD_MACH=avr5
ifeq ($(BOOTSIZE), 512)
MT_BOOTLOADER_ADDRESS = 0x1FC00
endif
ifeq ($(BOOTSIZE), 1024)
MT_BOOTLOADER_ADDRESS = 0x1F800
endif
ifeq ($(BOOTSIZE), 2048)
MT_BOOTLOADER_ADDRESS = 0x1F000
endif
ifeq ($(BOOTSIZE), 4096)
MT_BOOTLOADER_ADDRESS = 0x1E000
endif
endif
# 0xFC00*2=0x1F800 for AT90Can128 1024 words Boot Size
##
ifeq ($(MCU), at90can128)
MT_BOOTLOADER_ADDRESS = 1f800
BFD_MACH=avr5
ifeq ($(BOOTSIZE), 512)
MT_BOOTLOADER_ADDRESS = 0x1FC00
endif
ifeq ($(BOOTSIZE), 1024)
MT_BOOTLOADER_ADDRESS = 0x1F800
endif
ifeq ($(BOOTSIZE), 2048)
MT_BOOTLOADER_ADDRESS = 0x1F000
endif
ifeq ($(BOOTSIZE), 4096)
MT_BOOTLOADER_ADDRESS = 0x1E000
endif
endif
# Output format. (can be srec, ihex, binary)
FORMAT = srec
FORMAT = ihex
#FORMAT = srec
# Target file name (without extension).
TARGET = main
# List C source files here. (C dependencies are automatically generated.)
SRC = $(TARGET).c uart.c lowlevel.c
SRC = $(TARGET).c
# List Assembler source files here.
@ -126,11 +276,11 @@ SRC = $(TARGET).c uart.c lowlevel.c
# Even though the DOS/Win* filesystem matches both .s and .S the same,
# it will preserve the spelling of the filenames, and gcc itself does
# care about how the name is spelled on its command-line.
ASRC =
ASRC =
# Optimization level, can be [0, 1, 2, 3, s].
# Optimization level, can be [0, 1, 2, 3, s].
# 0 = turn off optimization. s = optimize for size.
# (Note: 3 is not always the best optimization level. See avr-libc FAQ.)
OPT = s
@ -142,7 +292,7 @@ DEBUG = stabs
# List any extra directories to look for include files here.
# Each directory must be seperated by a space.
EXTRAINCDIRS =
EXTRAINCDIRS =
# Compiler flag to set the C Standard level.
@ -153,11 +303,8 @@ EXTRAINCDIRS =
CSTANDARD = -std=gnu99
# Place -D or -U options here
CDEFS = -DBLPORT=$(BLPORT) -DBLDDR=$(BLDDR) -DBLPIN=$(BLPIN) -DBLPNUM=$(BLPNUM)
CDEFS += -D$(STARTMODE) -D$(BOOTSIZE) -DBAUDRATE=$(BAUDRATE)
ifdef XTAL
CDEFS += -DXTAL=$(XTAL)
endif
CDEFS = -DBOOTSIZE=$(BOOTSIZE)
# Place -I options here
CINCS =
@ -187,7 +334,7 @@ CFLAGS += $(CSTANDARD)
# for use in COFF files, additional information about filenames
# and function names needs to be present in the assembler source
# files -- see avr-libc docs [FIXME: not yet described there]
ASFLAGS = -Wa,-adhlns=$(<:.S=.lst),-gstabs
ASFLAGS = -Wa,-adhlns=$(<:.S=.lst),-gstabs
@ -199,7 +346,7 @@ PRINTF_LIB_MIN = -Wl,-u,vfprintf -lprintf_min
# Floating point printf version (requires MATH_LIB = -lm below)
PRINTF_LIB_FLOAT = -Wl,-u,vfprintf -lprintf_flt
PRINTF_LIB =
PRINTF_LIB =
# Minimalistic scanf version
SCANF_LIB_MIN = -Wl,-u,vfscanf -lscanf_min
@ -207,7 +354,7 @@ SCANF_LIB_MIN = -Wl,-u,vfscanf -lscanf_min
# Floating point + %[ scanf version (requires MATH_LIB = -lm below)
SCANF_LIB_FLOAT = -Wl,-u,vfscanf -lscanf_flt
SCANF_LIB =
SCANF_LIB =
MATH_LIB = -lm
@ -233,14 +380,20 @@ LDFLAGS += $(PRINTF_LIB) $(SCANF_LIB) $(MATH_LIB)
################## BOOTLOADER ######################
# MT_BOOTLOADER_ADDRESS (=Start of Boot Loader section
# in bytes - not words) is defined above.
# in bytes - not words) as defined above.
LDFLAGS += -Wl,--section-start=.text=$(MT_BOOTLOADER_ADDRESS)
# check if linker-scripts without interrupt-vectors should
# be used and set linker-option, announce to C-code by define
ifeq ($(BOOTINTVEC), no)
LDFLAGS += -T./ldscripts_no_vector/$(BFD_MACH).x
CFLAGS += -DBOOTLOADERHASNOVECTORS
endif
# Programming support using avrdude. Settings and variables.
# Programming hardware: alf avr910 avrisp bascom bsd
# Programming hardware: alf avr910 avrisp bascom bsd
# dt006 pavr picoweb pony-stk200 sp12 stk200 stk500
#
# Type: avrdude -c ?
@ -249,8 +402,8 @@ LDFLAGS += -Wl,--section-start=.text=$(MT_BOOTLOADER_ADDRESS)
AVRDUDE_PROGRAMMER = stk500v2
# com1 = serial port. Use lpt1 to connect to parallel port.
#AVRDUDE_PORT = com1 # programmer connected to serial device
AVRDUDE_PORT = /dev/ttyS1 # programmer connected to serial device
AVRDUDE_PORT = com1 # programmer connected to serial device
#AVRDUDE_PORT = /dev/ttyS0 # programmer connected to serial device
AVRDUDE_WRITE_FLASH = -U flash:w:$(TARGET).hex
#AVRDUDE_WRITE_EEPROM = -U eeprom:w:$(TARGET).eep
@ -266,7 +419,7 @@ AVRDUDE_WRITE_FLASH = -U flash:w:$(TARGET).hex
#AVRDUDE_NO_VERIFY = -V
# Increase verbosity level. Please use this when submitting bug
# reports about avrdude. See <http://savannah.nongnu.org/projects/avrdude>
# reports about avrdude. See <http://savannah.nongnu.org/projects/avrdude>
# to submit bug reports.
#AVRDUDE_VERBOSE = -v -v
@ -280,25 +433,35 @@ AVRDUDE_FLAGS += $(AVRDUDE_ERASE_COUNTER)
# ---------------------------------------------------------------------------
# Define directories, if needed.
DIRAVR = c:/winavr
DIRAVRBIN = $(DIRAVR)/bin
DIRAVRUTILS = $(DIRAVR)/utils/bin
DIRINC = .
DIRLIB = $(DIRAVR)/avr/lib
#DIRAVR = c:/winavr
#DIRAVRBIN = $(DIRAVR)/bin
#DIRAVRUTILS = $(DIRAVR)/utils/bin
#DIRINC = .
#DIRLIB = $(DIRAVR)/avr/lib
# Define programs and commands.
#SHELL = $(DIRAVRUTILS)/sh
#NM = $(DIRAVRBIN)/avr-nm
#CC = $(DIRAVRBIN)/avr-gcc
#OBJCOPY = $(DIRAVRBIN)/avr-objcopy
#OBJDUMP= $(DIRAVRBIN)/avr-objdump
#SIZE = $(DIRAVRBIN)/avr-size
#AVRDUDE = $(DIRAVRBIN)/avrdude.sh
#REMOVE = rm -f
#COPY = cp
# Define programs and commands.
SHELL = sh
CC = env WINEDLLOVERRIDES=msvcrt=n /spare/bon/wine/wine/wine c:/WinAVR/bin/avr-gcc
OBJCOPY = env WINEDLLOVERRIDES=msvcrt=n /spare/bon/wine/wine/wine c:/WinAVR/bin/avr-objcopy
OBJDUMP = env WINEDLLOVERRIDES=msvcrt=n /spare/bon/wine/wine/wine c:/WinAVR/bin/avr-objdump
SIZE = env WINEDLLOVERRIDES=msvcrt=n /spare/bon/wine/wine/wine c:/WinAVR/bin/avr-size
NM = env WINEDLLOVERRIDES=msvcrt=n /spare/bon/wine/wine/wine c:/WinAVR/bin/avr-nm
CC = avr-gcc
OBJCOPY = avr-objcopy
OBJDUMP = avr-objdump
SIZE = avr-size
NM = avr-nm
AVRDUDE = avrdude
REMOVE = rm -f
COPY = cp
WINSHELL = cmd
# Define Messages
@ -306,7 +469,7 @@ COPY = cp
MSG_ERRORS_NONE = Errors: none
MSG_BEGIN = -------- begin --------
MSG_END = -------- end --------
MSG_SIZE_BEFORE = Size before:
MSG_SIZE_BEFORE = Size before:
MSG_SIZE_AFTER = Size after:
MSG_COFF = Converting to AVR COFF:
MSG_EXTENDED_COFF = Converting to AVR Extended COFF:
@ -323,7 +486,7 @@ MSG_CLEANING = Cleaning project:
# Define all object files.
OBJ = $(SRC:.c=.o) $(ASRC:.S=.o)
OBJ = $(SRC:.c=.o) $(ASRC:.S=.o)
# Define all listing files.
LST = $(ASRC:.S=.lst) $(SRC:.c=.lst)
@ -350,7 +513,7 @@ build: elf hex eep lss sym
elf: $(TARGET).elf
hex: $(TARGET).hex
eep: $(TARGET).eep
lss: $(TARGET).lss
lss: $(TARGET).lss
sym: $(TARGET).sym
@ -382,12 +545,12 @@ sizeafter:
# Display compiler version information.
gccversion :
gccversion :
@$(CC) --version
# Program the device.
# Program the device.
program: $(TARGET).hex $(TARGET).eep
$(AVRDUDE) $(AVRDUDE_FLAGS) $(AVRDUDE_WRITE_FLASH) $(AVRDUDE_WRITE_EEPROM)
@ -399,7 +562,7 @@ COFFCONVERT=$(OBJCOPY) --debugging \
--change-section-address .data-0x800000 \
--change-section-address .bss-0x800000 \
--change-section-address .noinit-0x800000 \
--change-section-address .eeprom-0x810000
--change-section-address .eeprom-0x810000
coff: $(TARGET).elf
@ -454,7 +617,7 @@ extcoff: $(TARGET).elf
%.o : %.c
@echo
@echo $(MSG_COMPILING) $<
$(CC) -c $(ALL_CFLAGS) $< -o $@
$(CC) -c $(ALL_CFLAGS) $< -o $@
# Compile: create assembler files from C source files.

39
mega128.h Normal file
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@ -0,0 +1,39 @@
#ifndef _MEGA128_H_
#define _MEGA128_H_
/* Part-Code ISP */
#define DEVTYPE_ISP 0x43
/* Part-Code Boot */
#define DEVTYPE_BOOT 0x44
#define SIG_BYTE1 0x1E
#define SIG_BYTE2 0x97
#define SIG_BYTE3 0x02
#ifndef UART_USE_SECOND
#define UART_BAUD_HIGH UBRR0H
#define UART_BAUD_LOW UBRR0L
#define UART_STATUS UCSR0A
#define UART_TXREADY UDRE0
#define UART_RXREADY RXC0
#define UART_DOUBLE U2X0
#define UART_CTRL UCSR0B
#define UART_CTRL_DATA ((1<<TXEN0) | (1<<RXEN0))
#define UART_CTRL2 UCSR0C
#define UART_CTRL2_DATA ((1<<UCSZ01) | (1<<UCSZ00))
#define UART_DATA UDR0
#else
#define UART_BAUD_HIGH UBRR1H
#define UART_BAUD_LOW UBRR1L
#define UART_STATUS UCSR1A
#define UART_TXREADY UDRE1
#define UART_RXREADY RXC1
#define UART_DOUBLE U2X1
#define UART_CTRL UCSR1B
#define UART_CTRL_DATA ((1<<TXEN1) | (1<<RXEN1))
#define UART_CTRL2 UCSR1C
#define UART_CTRL2_DATA ((1<<UCSZ11) | (1<<UCSZ10))
#define UART_DATA UDR1
#endif
#endif // #ifndef _MEGA128_H_

42
mega128can.h Normal file
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@ -0,0 +1,42 @@
#ifndef _MEGA128CAN_H_
#define _MEGA128CAN_H_
/* Dummy: use ATmega128 device-code for now,
must be same as used in avrdude.conf */
/* Part-Code ISP */
#define DEVTYPE_ISP 0x43
/* Part-Code Boot */
#define DEVTYPE_BOOT 0x44
#define SIG_BYTE1 0x1E
#define SIG_BYTE2 0x97
#define SIG_BYTE3 0x81
#ifndef UART_USE_SECOND
#define UART_BAUD_HIGH UBRR0H
#define UART_BAUD_LOW UBRR0L
#define UART_STATUS UCSR0A
#define UART_TXREADY UDRE0
#define UART_RXREADY RXC0
#define UART_DOUBLE U2X0
#define UART_CTRL UCSR0B
#define UART_CTRL_DATA ((1<<TXEN0) | (1<<RXEN0))
#define UART_CTRL2 UCSR0C
#define UART_CTRL2_DATA ((1<<UCSZ01) | (1<<UCSZ00))
#define UART_DATA UDR0
#else
#define UART_BAUD_HIGH UBRR1H
#define UART_BAUD_LOW UBRR1L
#define UART_STATUS UCSR1A
#define UART_TXREADY UDRE1
#define UART_RXREADY RXC1
#define UART_DOUBLE U2X1
#define UART_CTRL UCSR1B
#define UART_CTRL_DATA ((1<<TXEN1) | (1<<RXEN1))
#define UART_CTRL2 UCSR1C
#define UART_CTRL2_DATA ((1<<UCSZ11) | (1<<UCSZ10))
#define UART_DATA UDR1
#endif
#endif // #ifndef _MEGA128CAN_H_

25
mega16.h Normal file
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@ -0,0 +1,25 @@
#ifndef _MEGA16_H_
#define _MEGA16_H_
/* Part-Code ISP */
#define DEVTYPE_ISP 0x74
/* Part-Code Boot */
#define DEVTYPE_BOOT 0x75
#define SIG_BYTE1 0x1E
#define SIG_BYTE2 0x94
#define SIG_BYTE3 0x03
#define UART_BAUD_HIGH UBRRH
#define UART_BAUD_LOW UBRRL
#define UART_STATUS UCSRA
#define UART_TXREADY UDRE
#define UART_RXREADY RXC
#define UART_DOUBLE U2X
#define UART_CTRL UCSRB
#define UART_CTRL_DATA ((1<<TXEN) | (1<<RXEN))
#define UART_CTRL2 UCSRC
#define UART_CTRL2_DATA ((1<<URSEL) | (1<<UCSZ1) | (1<<UCSZ0))
#define UART_DATA UDR
#endif // #ifndef _MEGA16_H_

45
mega162.h Normal file
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@ -0,0 +1,45 @@
#ifndef _MEGA162_H_
#define _MEGA162_H_
/* Part-Code ISP */
// documented code (AVR109 AppNote) but not supported by AVRProg 1.40
// #define DEVTYPE_ISP 0x62
// fake ATmega16 instead:
#define DEVTYPE_ISP 0x74
/* Part-Code Boot */
// documented code but not supported by AVRProg 1.40
// #define DEVTYPE_BOOT 0x63
// fake ATmega16:
#define DEVTYPE_BOOT 0x75
#define SIG_BYTE1 0x1E
#define SIG_BYTE2 0x94
#define SIG_BYTE3 0x04
#ifndef UART_USE_SECOND
#define UART_BAUD_HIGH UBRR0H
#define UART_BAUD_LOW UBRR0L
#define UART_STATUS UCSR0A
#define UART_TXREADY UDRE0
#define UART_RXREADY RXC0
#define UART_DOUBLE U2X0
#define UART_CTRL UCSR0B
#define UART_CTRL_DATA ((1<<TXEN0) | (1<<RXEN0))
#define UART_CTRL2 UCSR0C
#define UART_CTRL2_DATA ((1<<URSEL0) | (1<<UCSZ01) | (1<<UCSZ00))
#define UART_DATA UDR0
#else
#define UART_BAUD_HIGH UBRR1H
#define UART_BAUD_LOW UBRR1L
#define UART_STATUS UCSR1A
#define UART_TXREADY UDRE1
#define UART_RXREADY RXC1
#define UART_DOUBLE U2X1
#define UART_CTRL UCSR1B
#define UART_CTRL_DATA ((1<<TXEN1) | (1<<RXEN1))
#define UART_CTRL2 UCSR1C
#define UART_CTRL2_DATA ( (1<<URSEL1) | (1<<UCSZ11) | (1<<UCSZ10))
#define UART_DATA UDR1
#endif
#endif // #ifndef _MEGA162_H_

23
mega169.h Normal file
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@ -0,0 +1,23 @@
#ifndef _MEGA169_H_
#define _MEGA169_H_
#define DEVTYPE_ISP 0x78
#define DEVTYPE_BOOT 0x79
#define SIG_BYTE3 0x1E
#define SIG_BYTE2 0x94
#define SIG_BYTE1 0x05
#define UART_BAUD_HIGH UBRRH
#define UART_BAUD_LOW UBRRL
#define UART_STATUS UCSRA
#define UART_TXREADY UDRE
#define UART_RXREADY RXC
#define UART_DOUBLE U2X
#define UART_CTRL UCSRB
#define UART_CTRL_DATA ((1<<TXEN) | (1<<RXEN))
#define UART_CTRL2 UCSRC
#define UART_CTRL2_DATA ((1<<UCSZ1) | (1<<UCSZ0))
#define UART_DATA UDR
#endif // #ifndef _MEGA169_H_

25
mega32.h Normal file
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@ -0,0 +1,25 @@
#ifndef _MEGA32_H_
#define _MEGA32_H_
/* Part-Code ISP */
#define DEVTYPE_ISP 0x72
/* Part-Code Boot */
#define DEVTYPE_BOOT 0x73
#define SIG_BYTE1 0x1E
#define SIG_BYTE2 0x95
#define SIG_BYTE3 0x02
#define UART_BAUD_HIGH UBRRH
#define UART_BAUD_LOW UBRRL
#define UART_STATUS UCSRA
#define UART_TXREADY UDRE
#define UART_RXREADY RXC
#define UART_DOUBLE U2X
#define UART_CTRL UCSRB
#define UART_CTRL_DATA ((1<<TXEN) | (1<<RXEN))
#define UART_CTRL2 UCSRC
#define UART_CTRL2_DATA ((1<<URSEL) | (1<<UCSZ1) | (1<<UCSZ0))
#define UART_DATA UDR
#endif // #ifndef _MEGA32_H_

17
mega324p.h Normal file
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@ -0,0 +1,17 @@
#ifndef _MEGA324P_H_
#define _MEGA324P_H_
/* I (M. Thomas) could not find an official Boot-ID
for the ATmega324P so pretend it's an ATmega32 */
/* Part-Code ISP */
#define DEVTYPE_ISP 0x72
/* Part-Code Boot */
#define DEVTYPE_BOOT 0x73
#define SIG_BYTE1 0x1E
#define SIG_BYTE2 0x95
#define SIG_BYTE3 0x08
#include "megaxx4p.h"
#endif // #ifndef _MEGA324P_H_

39
mega64.h Normal file
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@ -0,0 +1,39 @@
#ifndef _MEGA64_H_
#define _MEGA64_H_
/* Part-Code ISP */
#define DEVTYPE_ISP 0x45
/* Part-Code Boot */
#define DEVTYPE_BOOT 0x46
#define SIG_BYTE1 0x1E
#define SIG_BYTE2 0x96
#define SIG_BYTE3 0x02
#ifndef UART_USE_SECOND
#define UART_BAUD_HIGH UBRR0H
#define UART_BAUD_LOW UBRR0L
#define UART_STATUS UCSR0A
#define UART_TXREADY UDRE0
#define UART_RXREADY RXC0
#define UART_DOUBLE U2X0
#define UART_CTRL UCSR0B
#define UART_CTRL_DATA ((1<<TXEN0) | (1<<RXEN0))
#define UART_CTRL2 UCSR0C
#define UART_CTRL2_DATA ((1<<UCSZ01) | (1<<UCSZ00))
#define UART_DATA UDR0
#else
#define UART_BAUD_HIGH UBRR1H
#define UART_BAUD_LOW UBRR1L
#define UART_STATUS UCSR1A
#define UART_TXREADY UDRE1
#define UART_RXREADY RXC1
#define UART_DOUBLE U2X1
#define UART_CTRL UCSR1B
#define UART_CTRL_DATA ((1<<TXEN1) | (1<<RXEN1))
#define UART_CTRL2 UCSR1C
#define UART_CTRL2_DATA ((1<<UCSZ11) | (1<<UCSZ10))
#define UART_DATA UDR1
#endif
#endif // #ifndef _MEGA64_H_

42
mega644.h Normal file
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@ -0,0 +1,42 @@
#ifndef _MEGA644_H_
#define _MEGA644_H_
/* I (M. Thomas) could not find an official Boot-ID
for the ATmega644 so pretend it's an ATmega64 */
/* Part-Code ISP */
#define DEVTYPE_ISP 0x45
/* Part-Code Boot */
#define DEVTYPE_BOOT 0x46
#define SIG_BYTE1 0x1E
#define SIG_BYTE2 0x96
#define SIG_BYTE3 0x09
#define UART_BAUD_HIGH UBRR0H
#define UART_BAUD_LOW UBRR0L
#define UART_STATUS UCSR0A
#define UART_TXREADY UDRE0
#define UART_RXREADY RXC0
#define UART_DOUBLE U2X0
#define UART_CTRL UCSR0B
#define UART_CTRL_DATA ((1<<TXEN0) | (1<<RXEN0))
#define UART_CTRL2 UCSR0C
#define UART_CTRL2_DATA ( (1<<UCSZ01) | (1<<UCSZ00))
#define UART_DATA UDR0
#define WDT_OFF_SPECIAL
static inline void bootloader_wdt_off(void)
{
cli();
wdt_reset();
/* Clear WDRF in MCUSR */
MCUSR &= ~(1<<WDRF);
/* Write logical one to WDCE and WDE */
/* Keep old prescaler setting to prevent unintentional time-out */
WDTCSR |= (1<<WDCE) | (1<<WDE);
/* Turn off WDT */
WDTCSR = 0x00;
}
#endif // #ifndef _MEGA644_H_

17
mega644p.h Normal file
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@ -0,0 +1,17 @@
#ifndef _MEGA644P_H_
#define _MEGA644P_H_
/* I (M. Thomas) could not find an official Boot-ID
for the ATmega644P so pretend it's an ATmega64 */
/* Part-Code ISP */
#define DEVTYPE_ISP 0x45
/* Part-Code Boot */
#define DEVTYPE_BOOT 0x46
#define SIG_BYTE1 0x1E
#define SIG_BYTE2 0x96
#define SIG_BYTE3 0x0A
#include "megaxx4p.h"
#endif // #ifndef _MEGA644P_H_

25
mega8.h Normal file
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@ -0,0 +1,25 @@
#ifndef _MEGA8_H_
#define _MEGA8_H_
/* Part-Code ISP */
#define DEVTYPE_ISP 0x76
/* Part-Code BOOT */
#define DEVTYPE_BOOT 0x77
#define SIG_BYTE1 0x1E
#define SIG_BYTE2 0x93
#define SIG_BYTE3 0x07
#define UART_BAUD_HIGH UBRRH
#define UART_BAUD_LOW UBRRL
#define UART_STATUS UCSRA
#define UART_TXREADY UDRE
#define UART_RXREADY RXC
#define UART_DOUBLE U2X
#define UART_CTRL UCSRB
#define UART_CTRL_DATA ((1<<TXEN) | (1<<RXEN))
#define UART_CTRL2 UCSRC
#define UART_CTRL2_DATA ((1<<URSEL) | (1<<UCSZ1) | (1<<UCSZ0))
#define UART_DATA UDR
#endif // #ifndef _MEGA8_H_

47
megaxx4p.h Normal file
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@ -0,0 +1,47 @@
#ifndef _MEGAxx4_H_
#define _MEGAxx4_H_
#ifndef UART_USE_SECOND
/* UART 0 */
#define UART_BAUD_HIGH UBRR0H
#define UART_BAUD_LOW UBRR0L
#define UART_STATUS UCSR0A
#define UART_TXREADY UDRE0
#define UART_RXREADY RXC0
#define UART_DOUBLE U2X0
#define UART_CTRL UCSR0B
#define UART_CTRL_DATA ((1<<TXEN0) | (1<<RXEN0))
#define UART_CTRL2 UCSR0C
#define UART_CTRL2_DATA ( (1<<UCSZ01) | (1<<UCSZ00))
#define UART_DATA UDR0
#else
/* UART 1 */
#define UART_BAUD_HIGH UBRR1H
#define UART_BAUD_LOW UBRR1L
#define UART_STATUS UCSR1A
#define UART_TXREADY UDRE1
#define UART_RXREADY RXC1
#define UART_DOUBLE U2X1
#define UART_CTRL UCSR1B
#define UART_CTRL_DATA ((1<<TXEN1) | (1<<RXEN1))
#define UART_CTRL2 UCSR1C
#define UART_CTRL2_DATA ( (1<<UCSZ11) | (1<<UCSZ10))
#define UART_DATA UDR1
#endif
#define WDT_OFF_SPECIAL
static inline void bootloader_wdt_off(void)
{
cli();
wdt_reset();
/* Clear WDRF in MCUSR */
MCUSR &= ~(1<<WDRF);
/* Write logical one to WDCE and WDE */
/* Keep old prescaler setting to prevent unintentional time-out */
WDTCSR |= (1<<WDCE) | (1<<WDE);
/* Turn off WDT */
WDTCSR = 0x00;
}
#endif // #ifndef _MEGA644_H_

210
readme.txt
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@ -2,17 +2,125 @@
======================================================
ATMEL AVR UART Bootloader for AVR-GCC/avr-libc
based on the AVR Butterfly bootloader code
by Martin Thomas, Kaiserslautern, Germany
mthomas@rhrk.uni-kl.de
mthomas@rhrk.uni-kl.de
eversmith@heizung-thomas.de
http://www.siwawi.arubi.uni-kl.de/avr_projects
** Addtional code and improvements contributed **
** by Uwe Bonnes, Bjoern Riemer and Olaf Rempel. **
Eearly versions of this bootloader-code have been
based on the AVR Butterfly bootloader-source REV02
which has been available from atmel.com.
======================================================
Programming-Software (on the "PC-Side"):
* AVRProg (included in AVRStudio) available at www.atmel.com.
MS-Windows only. AVRProg can be used as stand-alone application.
(avrprog.exe)
* avrdude available at http://savannah.nongnu.org/projects/avrdude/
"Multiplattform"
* Installation instructions at the end of this file.
3. Dec. 2008 - Version 0.85
* disable U2X before jump to app as suggested be Alexander Döller
* moved UBRR-macros to main.c and changed them. Inspired by code from avr-libc setbaud.
(macros which are commented out (//) are from Pavel Fertser)
6. Nov. 2008 - Version 0.84
* Added definitions for ATmega64 provided by Pavel Fertser - Thanks.
12. Apr. 2008 - Version 0.83
* Added definitions for ATmega644P and ATmega324P
* Tested with ATmega324P, gcc 4.2.2, avr-libc 1.4.6
* Added testapp to verify "exit bootloader" with
watchdog (n.b.: watchdog-disable called early in testapp)
27. Jan. 2007 - Version 0.82
* Added definitions for ATmega644.
* Using avr-lib's eeprom-functions (old "direct-access"-code
has not been compatible with ATmega644).
* Watchdog-disable at startup (configurable): avoids problems with
repeated login to bootloader. Not needed if the bootloader is
never re-entered again between an "exit programming" and
a system-reset/power-toogle.
* Additional watchdog disable-function for ATmega644.
* Made watchdog-enable time at exit-programming a configuration-value
(define).
* Bootloader read-protection: if enabled the bootloader fakes
an empty boot-section (configurable by define)
Since more of the avr-libc functions's are used this version
should be more portable for other AVRs but the size of the
binary increases a little bit.
Make sure to disable the watchdog early in the user-application
esp. when using a "modern" AVR (i.e. ATmega48/88/168/644/324P/644P).
3. Dec. 2006 - Version 0.81
* Added definitions for ATmega162.
* Fixed init for double-speed (bitmask). Thanks to Bernhard Roth
28. May 2006 - Version 0.8beta3
* Supports discarding of interrupt-vectors which saves some space
if no interrupts are needed in the bootloader. Added option
in makefile to enable this feature, modified LDFLAGS,
additional code in main.c for a pseudo default_interrupt ISR.
The modified linker-scripts have been contributed by
Olaf Rempel (basicly just the .vector-section is not linked).
* Reverted the order of signatur-byte-numbers in part-
configurations to the usual order in the datasheet,
also reverted in main.c for sending the signature.
* Definitions for lock/fuse-readout.
* Updated installation-instruction at the end of this file.
* Added DEVTYPE_ISP/DEVTYPE_BOOT to part-configurations,
added configuration-option for this in main.c.
* A remark about the DEVTYPE: Usualy there are two
Part-Codes/Device-Codes. One is for ISP: AVRProg shows
the type of the AVR. The other code is for bootloading:
AVRprog shows the type plus "BOOT". When a boot-device-code
gets detected by AVRprog it "knows" how do handle the
limited functionality of bootloaders. (When receiving the
ISP-code AVRProg expects an AVR910-type programmer.)
The offset between the codes is usualy 0x01 where the
ISP-code is the smaller value, i.e. ATmega32 ISP-code
is 0x72->"ATmega32" and boot-code is 0x73->"ATmega32 BOOT".
When using avrdude the bootloader's device-code must match
the device-code in the avrdude.conf. Check the avrdude-
code to see if both codes (AVR910 and AVR109) are supported.
-- I have got some e-mails from users which have been
confused by this. Hopefully this explanation is good enough.
* This bootloader lets the watchdog do a reset when the
user selects "Exit programmer" (i.e. in AVRProg) after an
update. Make sure to disable or reset the watchdog early in
your application.
27. May 2006 - Version 0.8beta2
* More very well done improvements contributed by Olaf Rempel.
* Olaf Rempel also modified the STARTUP_WAIT method.
21. May 2006 - Version 0.8beta
* Version contributed by Olaf Rempel. He has done a lot of modifications.
-> "cleaner code", smaller binaries.
09. Feb. 2006 - Version 0.75
* additional STARTUP_WAIT support contributed by Bjoern Riemer
18. Aug. 2005 - Version 0.74
* AT90CAN128 support contributed by Uwe Bonnes
@ -23,24 +131,25 @@
* (Version 0.6 has never been available on the web-page)
* ATmega128 support
* code cleanup
* Tested with ATmega8, ATmega32 and ATmega128
* This version has been tested with ATmega8, ATmega32 and
ATmega128
7. Apr. 2004 - Version 0.5
* added different startup-methods
* compatible with ATmega8 now
* included makefile adopted to ATmega8 now
* included makefile adapted to ATmega8 now
(ATmega16 options still available)
* fixed jump to application which did not work
reliably before
* tested with ATmega8
* minimal options and startup-code result in
* minimal options and startup-code result in
bootloader-size < 512 words
6. Apr. 2004 - Version 0.4
* Buffered read of chars from UART during programming
since eeprom-write is too slow for unbuffered
since eeprom-write is too slow for unbuffered
operation. So EEPROM-upload does work now.
* Added BOOTICE-mode to flash JTAGICE-compatible
hardware (ATmega16@7,3Mhz) (if you know about BOOTICE,
@ -56,7 +165,7 @@ work with this bootloader.
27. Mar 2004 - Version 0.3
Felt that as much functions from avr-libc's boot.h
as possible should be used without modifications.
as possible should be used without modifications.
Latest CVS-version of boot.h is included.
Only the read-routine is still "self-made" based
on ATMELs assembler-code.
@ -64,7 +173,7 @@ EEPROM write on Mega16 does not work (and did not
work with V0.2 too). May be caused by my old Mega16
chip. Needs testing. Flash read/write and EEPROM
read works. Still only tested with ATmega16.
This version may not work with the ATmega169 any
This version may not work with the ATmega169 any
more.
24. Mar 2004 - Version 0.2
@ -74,24 +183,24 @@ with the AVR-Butterfly there was a need to make
some changes in the bootloader. The same problem
again: no IAR compiler. The same way to solve the
problem: a port of the code to avr-gcc/avr-libc.
So this code is based on the ATMEL Butterfly
So this code is based on the ATMEL Butterfly
bootloader source code Rev 0.2 for IAR.
The bootloader-port for the Butterfly which mimics
the complete functionality of the original
the complete functionality of the original
BF-bootloader is availabe at:
www.siwawi.arubi.uni-kl.de/avr_projects
Atmel used a separate "lib" written in "pure"
Atmel used a separate "lib" written in "pure"
assembly to access the low-level functions
for flash read/write. Well, so far I
don't know how to use "mixed language sources"
don't know how to use "mixed language sources"
with the avr-gcc toolchain, so the low-level
routines have been implemented as inline assembler.
The avr-libc boot.h module written by Eric
Weddington served as a template Three of the four
low-level routines found in lowlevel.c come from
boot.h with minimal changes. The read routine has
Weddington served as a template Three of the four
low-level routines found in lowlevel.c come from
boot.h with minimal changes. The read routine has
been developed based on the ATMEL assembler code.
Ignore the fuse and lock-bit readout. Read and Set is
@ -100,60 +209,59 @@ not enabled (TODO).
--------------- Installation -----------------
- Change the MCU type in the makefile (so far
ATmega16 has been tested, ATmega169, ATmega8
and ATmega32 should be o.k. too.
- Change the MCU type in the makefile.
- Change the boot(loader)-size in Makefile, this
bootloader is larger than 512 words (1024 bytes),
so select at least _B1024!
- Change the boot(loader)-size in Makefile. The needed
space depends on the features selected in main.c
- Change the XTAL in Makefile to the clock-frequency
of your board (keep BAUDRATE at 19200). See
the datasheet for frequencies with minimum
error at 19200bps and select Crystal/Oscillator
to get minimum errors.
- Set baudrate in main.c, a doublespeed configuration-option
is available too.
- Change the start-condition in Makefile. Default
is: enter bootloader if Pin A7 is connected to
GND during reset/startup
- Change the F_CPU in main.c to the clock-frequency
of your board. See the datasheet for frequencies
with minimum error at the selected baudrate.
- Please use at least avr-gcc 3.3.1/avr-libc 1.0
or WINAVR Sept. 2003 or later to compile and link
the bootloader.
- Select the start-condition in main.c.
- upload the hex-File to the AVR (STK500, STK200, SP12
etc.)
- Please use at least avr-gcc 3.3.1/avr-libc 1.0
or WINAVR Sept. 2003 or later to compile and link
this bootloader.
- program the "Boot Flash section size" (BOOTSZ fuses)
according to the boot-size selected in main.c
i.e. BOOTSZ=00 for boot-size 1024 words on ATmega16
- Upload the hex-File to the AVR (STK500, STK200, SP12
evertool, AVR910 etc.)
- enable the BOOT Reset Vector (BOOTTRST=0)
- Program the "Boot Flash section size" (BOOTSZ fuses)
according to the boot-size selected in the makefile
i.e. BOOTSZ=00 for boot-size 1024 words (2048 bytes)
on ATmega16
- enable the BOOT Reset Vector fuse (BOOTRST=0)
- Set the lock bits to protect the bootloader from
SPM-writes (Boot Loader Protection Mode 2 in STK500-
plugin)
plugin) so that it can not overwrite itself.
- Connect the AVR UART Pins via level-shifter/inverter
(i.e. MAX232) to you PCs Com-Port.
(i.e. MAX232) to your PCs COM-Port.
- Reset the AVR while fullfilling the bootloader start-
condition. Which means connect PA7 to GND in the default
config during reste/power-cycle. Keep the connection
or hold the key down until you see the AVRPROG dialog!
condition. (Default: selected pin connected to GND).
The condition must be "true" until you see the
AVRPROG dialog or avrdude connects.
- Start AVRPROG (AVRStuido/Tools or stand-alone) -
keep PA7 grounded!
- Start AVRPROG (AVRStudio/Tools or stand-alone avrprog.exe)
AVRDUDE is supported too, check it's manual
for command-line options. Read the text above for
information about Device-Types and AVRDUDE
- AVRPROG will detect the bootloader, you may release
PA7 now
- AVRPROG or AVRDUDE should detect the bootloader.
- see AVRStuido online-help for more information how
- see AVRStudio's online-help for more information how
to use AVRPROG
- make sure to EXIT from AVRPROG (button) to start
your main-application (or toogle power/reset)
your main-application or toogle power/reset.
good luck, feedback welcome.
Feedback welcome, Good luck.
Martin

619
testapp/Makefile Normal file
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@ -0,0 +1,619 @@
# Hey Emacs, this is a -*- makefile -*-
#----------------------------------------------------------------------------
# WinAVR Makefile Template written by Eric B. Weddington, Jörg Wunsch, et al.
#
# Released to the Public Domain
#
# Additional material for this makefile was written by:
# Peter Fleury
# Tim Henigan
# Colin O'Flynn
# Reiner Patommel
# Markus Pfaff
# Sander Pool
# Frederik Rouleau
# Carlos Lamas
#
#----------------------------------------------------------------------------
# On command line:
#
# make all = Make software.
#
# make clean = Clean out built project files.
#
# make coff = Convert ELF to AVR COFF.
#
# make extcoff = Convert ELF to AVR Extended COFF.
#
# make program = Download the hex file to the device, using avrdude.
# Please customize the avrdude settings below first!
#
# make debug = Start either simulavr or avarice as specified for debugging,
# with avr-gdb or avr-insight as the front end for debugging.
#
# make filename.s = Just compile filename.c into the assembler code only.
#
# make filename.i = Create a preprocessed source file for use in submitting
# bug reports to the GCC project.
#
# To rebuild project do "make clean" then "make all".
#----------------------------------------------------------------------------
# MCU name
MCU = atmega324p
# Processor frequency.
# This will define a symbol, F_CPU, in all source code files equal to the
# processor frequency. You can then use this symbol in your source code to
# calculate timings. Do NOT tack on a 'UL' at the end, this will be done
# automatically to create a 32-bit value in your source code.
# Typical values are:
# F_CPU = 1000000
# F_CPU = 1843200
# F_CPU = 2000000
# F_CPU = 3686400
# F_CPU = 4000000
# F_CPU = 7372800
# F_CPU = 8000000
# F_CPU = 11059200
# F_CPU = 14745600
# F_CPU = 16000000
# F_CPU = 18432000
# F_CPU = 20000000
F_CPU = 3686400
# Output format. (can be srec, ihex, binary)
FORMAT = ihex
# Target file name (without extension).
TARGET = testapp
# Object files directory
# To put object files in current directory, use a dot (.), do NOT make
# this an empty or blank macro!
OBJDIR = .
# List C source files here. (C dependencies are automatically generated.)
SRC = $(TARGET).c
# List C++ source files here. (C dependencies are automatically generated.)
CPPSRC =
# List Assembler source files here.
# Make them always end in a capital .S. Files ending in a lowercase .s
# will not be considered source files but generated files (assembler
# output from the compiler), and will be deleted upon "make clean"!
# Even though the DOS/Win* filesystem matches both .s and .S the same,
# it will preserve the spelling of the filenames, and gcc itself does
# care about how the name is spelled on its command-line.
ASRC =
# Optimization level, can be [0, 1, 2, 3, s].
# 0 = turn off optimization. s = optimize for size.
# (Note: 3 is not always the best optimization level. See avr-libc FAQ.)
OPT = s
# Debugging format.
# Native formats for AVR-GCC's -g are dwarf-2 [default] or stabs.
# AVR Studio 4.10 requires dwarf-2.
# AVR [Extended] COFF format requires stabs, plus an avr-objcopy run.
DEBUG = dwarf-2
# List any extra directories to look for include files here.
# Each directory must be seperated by a space.
# Use forward slashes for directory separators.
# For a directory that has spaces, enclose it in quotes.
EXTRAINCDIRS =
# Compiler flag to set the C Standard level.
# c89 = "ANSI" C
# gnu89 = c89 plus GCC extensions
# c99 = ISO C99 standard (not yet fully implemented)
# gnu99 = c99 plus GCC extensions
CSTANDARD = -std=gnu99
# Place -D or -U options here for C sources
CDEFS = -DF_CPU=$(F_CPU)UL
# Place -D or -U options here for ASM sources
ADEFS = -DF_CPU=$(F_CPU)
# Place -D or -U options here for C++ sources
CPPDEFS = -DF_CPU=$(F_CPU)UL
#CPPDEFS += -D__STDC_LIMIT_MACROS
#CPPDEFS += -D__STDC_CONSTANT_MACROS
#---------------- Compiler Options C ----------------
# -g*: generate debugging information
# -O*: optimization level
# -f...: tuning, see GCC manual and avr-libc documentation
# -Wall...: warning level
# -Wa,...: tell GCC to pass this to the assembler.
# -adhlns...: create assembler listing
CFLAGS = -g$(DEBUG)
CFLAGS += $(CDEFS)
CFLAGS += -O$(OPT)
CFLAGS += -funsigned-char
CFLAGS += -funsigned-bitfields
CFLAGS += -fpack-struct
CFLAGS += -fshort-enums
CFLAGS += -Wall
CFLAGS += -Wstrict-prototypes
#CFLAGS += -mshort-calls
#CFLAGS += -fno-unit-at-a-time
#CFLAGS += -Wundef
#CFLAGS += -Wunreachable-code
#CFLAGS += -Wsign-compare
CFLAGS += -Wa,-adhlns=$(<:%.c=$(OBJDIR)/%.lst)
CFLAGS += $(patsubst %,-I%,$(EXTRAINCDIRS))
CFLAGS += $(CSTANDARD)
#---------------- Compiler Options C++ ----------------
# -g*: generate debugging information
# -O*: optimization level
# -f...: tuning, see GCC manual and avr-libc documentation
# -Wall...: warning level
# -Wa,...: tell GCC to pass this to the assembler.
# -adhlns...: create assembler listing
CPPFLAGS = -g$(DEBUG)
CPPFLAGS += $(CPPDEFS)
CPPFLAGS += -O$(OPT)
CPPFLAGS += -funsigned-char
CPPFLAGS += -funsigned-bitfields
CPPFLAGS += -fpack-struct
CPPFLAGS += -fshort-enums
CPPFLAGS += -fno-exceptions
CPPFLAGS += -Wall
CFLAGS += -Wundef
#CPPFLAGS += -mshort-calls
#CPPFLAGS += -fno-unit-at-a-time
#CPPFLAGS += -Wstrict-prototypes
#CPPFLAGS += -Wunreachable-code
#CPPFLAGS += -Wsign-compare
CPPFLAGS += -Wa,-adhlns=$(<:%.cpp=$(OBJDIR)/%.lst)
CPPFLAGS += $(patsubst %,-I%,$(EXTRAINCDIRS))
#CPPFLAGS += $(CSTANDARD)
#---------------- Assembler Options ----------------
# -Wa,...: tell GCC to pass this to the assembler.
# -adhlns: create listing
# -gstabs: have the assembler create line number information; note that
# for use in COFF files, additional information about filenames
# and function names needs to be present in the assembler source
# files -- see avr-libc docs [FIXME: not yet described there]
# -listing-cont-lines: Sets the maximum number of continuation lines of hex
# dump that will be displayed for a given single line of source input.
ASFLAGS = $(ADEFS) -Wa,-adhlns=$(<:%.S=$(OBJDIR)/%.lst),-gstabs,--listing-cont-lines=100
#---------------- Library Options ----------------
# Minimalistic printf version
PRINTF_LIB_MIN = -Wl,-u,vfprintf -lprintf_min
# Floating point printf version (requires MATH_LIB = -lm below)
PRINTF_LIB_FLOAT = -Wl,-u,vfprintf -lprintf_flt
# If this is left blank, then it will use the Standard printf version.
PRINTF_LIB =
#PRINTF_LIB = $(PRINTF_LIB_MIN)
#PRINTF_LIB = $(PRINTF_LIB_FLOAT)
# Minimalistic scanf version
SCANF_LIB_MIN = -Wl,-u,vfscanf -lscanf_min
# Floating point + %[ scanf version (requires MATH_LIB = -lm below)
SCANF_LIB_FLOAT = -Wl,-u,vfscanf -lscanf_flt
# If this is left blank, then it will use the Standard scanf version.
SCANF_LIB =
#SCANF_LIB = $(SCANF_LIB_MIN)
#SCANF_LIB = $(SCANF_LIB_FLOAT)
MATH_LIB = -lm
# List any extra directories to look for libraries here.
# Each directory must be seperated by a space.
# Use forward slashes for directory separators.
# For a directory that has spaces, enclose it in quotes.
EXTRALIBDIRS =
#---------------- External Memory Options ----------------
# 64 KB of external RAM, starting after internal RAM (ATmega128!),
# used for variables (.data/.bss) and heap (malloc()).
#EXTMEMOPTS = -Wl,-Tdata=0x801100,--defsym=__heap_end=0x80ffff
# 64 KB of external RAM, starting after internal RAM (ATmega128!),
# only used for heap (malloc()).
#EXTMEMOPTS = -Wl,--section-start,.data=0x801100,--defsym=__heap_end=0x80ffff
EXTMEMOPTS =
#---------------- Linker Options ----------------
# -Wl,...: tell GCC to pass this to linker.
# -Map: create map file
# --cref: add cross reference to map file
LDFLAGS = -Wl,-Map=$(TARGET).map,--cref
LDFLAGS += $(EXTMEMOPTS)
LDFLAGS += $(patsubst %,-L%,$(EXTRALIBDIRS))
LDFLAGS += $(PRINTF_LIB) $(SCANF_LIB) $(MATH_LIB)
#LDFLAGS += -T linker_script.x
#---------------- Programming Options (avrdude) ----------------
# Programming hardware: alf avr910 avrisp bascom bsd
# dt006 pavr picoweb pony-stk200 sp12 stk200 stk500
#
# Type: avrdude -c ?
# to get a full listing.
#
AVRDUDE_PROGRAMMER = stk500
# com1 = serial port. Use lpt1 to connect to parallel port.
AVRDUDE_PORT = com1 # programmer connected to serial device
AVRDUDE_WRITE_FLASH = -U flash:w:$(TARGET).hex
#AVRDUDE_WRITE_EEPROM = -U eeprom:w:$(TARGET).eep
# Uncomment the following if you want avrdude's erase cycle counter.
# Note that this counter needs to be initialized first using -Yn,
# see avrdude manual.
#AVRDUDE_ERASE_COUNTER = -y
# Uncomment the following if you do /not/ wish a verification to be
# performed after programming the device.
#AVRDUDE_NO_VERIFY = -V
# Increase verbosity level. Please use this when submitting bug
# reports about avrdude. See <http://savannah.nongnu.org/projects/avrdude>
# to submit bug reports.
#AVRDUDE_VERBOSE = -v -v
AVRDUDE_FLAGS = -p $(MCU) -P $(AVRDUDE_PORT) -c $(AVRDUDE_PROGRAMMER)
AVRDUDE_FLAGS += $(AVRDUDE_NO_VERIFY)
AVRDUDE_FLAGS += $(AVRDUDE_VERBOSE)
AVRDUDE_FLAGS += $(AVRDUDE_ERASE_COUNTER)
#---------------- Debugging Options ----------------
# For simulavr only - target MCU frequency.
DEBUG_MFREQ = $(F_CPU)
# Set the DEBUG_UI to either gdb or insight.
# DEBUG_UI = gdb
DEBUG_UI = insight
# Set the debugging back-end to either avarice, simulavr.
DEBUG_BACKEND = avarice
#DEBUG_BACKEND = simulavr
# GDB Init Filename.
GDBINIT_FILE = __avr_gdbinit
# When using avarice settings for the JTAG
JTAG_DEV = /dev/com1
# Debugging port used to communicate between GDB / avarice / simulavr.
DEBUG_PORT = 4242
# Debugging host used to communicate between GDB / avarice / simulavr, normally
# just set to localhost unless doing some sort of crazy debugging when
# avarice is running on a different computer.
DEBUG_HOST = localhost
#============================================================================
# Define programs and commands.
SHELL = sh
CC = avr-gcc
OBJCOPY = avr-objcopy
OBJDUMP = avr-objdump
SIZE = avr-size
AR = avr-ar rcs
NM = avr-nm
AVRDUDE = avrdude
REMOVE = rm -f
REMOVEDIR = rm -rf
COPY = cp
WINSHELL = cmd
# Define Messages
# English
MSG_ERRORS_NONE = Errors: none
MSG_BEGIN = -------- begin --------
MSG_END = -------- end --------
MSG_SIZE_BEFORE = Size before:
MSG_SIZE_AFTER = Size after:
MSG_COFF = Converting to AVR COFF:
MSG_EXTENDED_COFF = Converting to AVR Extended COFF:
MSG_FLASH = Creating load file for Flash:
MSG_EEPROM = Creating load file for EEPROM:
MSG_EXTENDED_LISTING = Creating Extended Listing:
MSG_SYMBOL_TABLE = Creating Symbol Table:
MSG_LINKING = Linking:
MSG_COMPILING = Compiling C:
MSG_COMPILING_CPP = Compiling C++:
MSG_ASSEMBLING = Assembling:
MSG_CLEANING = Cleaning project:
MSG_CREATING_LIBRARY = Creating library:
# Define all object files.
OBJ = $(SRC:%.c=$(OBJDIR)/%.o) $(CPPSRC:%.cpp=$(OBJDIR)/%.o) $(ASRC:%.S=$(OBJDIR)/%.o)
# Define all listing files.
LST = $(SRC:%.c=$(OBJDIR)/%.lst) $(CPPSRC:%.cpp=$(OBJDIR)/%.lst) $(ASRC:%.S=$(OBJDIR)/%.lst)
# Compiler flags to generate dependency files.
GENDEPFLAGS = -MMD -MP -MF .dep/$(@F).d
# Combine all necessary flags and optional flags.
# Add target processor to flags.
ALL_CFLAGS = -mmcu=$(MCU) -I. $(CFLAGS) $(GENDEPFLAGS)
ALL_CPPFLAGS = -mmcu=$(MCU) -I. -x c++ $(CPPFLAGS) $(GENDEPFLAGS)
ALL_ASFLAGS = -mmcu=$(MCU) -I. -x assembler-with-cpp $(ASFLAGS)
# Default target.
all: begin gccversion sizebefore build sizeafter end
# Change the build target to build a HEX file or a library.
build: elf hex eep lss sym
#build: lib
elf: $(TARGET).elf
hex: $(TARGET).hex
eep: $(TARGET).eep
lss: $(TARGET).lss
sym: $(TARGET).sym
LIBNAME=lib$(TARGET).a
lib: $(LIBNAME)
# Eye candy.
# AVR Studio 3.x does not check make's exit code but relies on
# the following magic strings to be generated by the compile job.
begin:
@echo
@echo $(MSG_BEGIN)
end:
@echo $(MSG_END)
@echo
# Display size of file.
HEXSIZE = $(SIZE) --target=$(FORMAT) $(TARGET).hex
ELFSIZE = $(SIZE) --mcu=$(MCU) --format=avr $(TARGET).elf
sizebefore:
@if test -f $(TARGET).elf; then echo; echo $(MSG_SIZE_BEFORE); $(ELFSIZE); \
2>/dev/null; echo; fi
sizeafter:
@if test -f $(TARGET).elf; then echo; echo $(MSG_SIZE_AFTER); $(ELFSIZE); \
2>/dev/null; echo; fi
# Display compiler version information.
gccversion :
@$(CC) --version
# Program the device.
program: $(TARGET).hex $(TARGET).eep
$(AVRDUDE) $(AVRDUDE_FLAGS) $(AVRDUDE_WRITE_FLASH) $(AVRDUDE_WRITE_EEPROM)
# Generate avr-gdb config/init file which does the following:
# define the reset signal, load the target file, connect to target, and set
# a breakpoint at main().
gdb-config:
@$(REMOVE) $(GDBINIT_FILE)
@echo define reset >> $(GDBINIT_FILE)
@echo SIGNAL SIGHUP >> $(GDBINIT_FILE)
@echo end >> $(GDBINIT_FILE)
@echo file $(TARGET).elf >> $(GDBINIT_FILE)
@echo target remote $(DEBUG_HOST):$(DEBUG_PORT) >> $(GDBINIT_FILE)
ifeq ($(DEBUG_BACKEND),simulavr)
@echo load >> $(GDBINIT_FILE)
endif
@echo break main >> $(GDBINIT_FILE)
debug: gdb-config $(TARGET).elf
ifeq ($(DEBUG_BACKEND), avarice)
@echo Starting AVaRICE - Press enter when "waiting to connect" message displays.
@$(WINSHELL) /c start avarice --jtag $(JTAG_DEV) --erase --program --file \
$(TARGET).elf $(DEBUG_HOST):$(DEBUG_PORT)
@$(WINSHELL) /c pause
else
@$(WINSHELL) /c start simulavr --gdbserver --device $(MCU) --clock-freq \
$(DEBUG_MFREQ) --port $(DEBUG_PORT)
endif
@$(WINSHELL) /c start avr-$(DEBUG_UI) --command=$(GDBINIT_FILE)
# Convert ELF to COFF for use in debugging / simulating in AVR Studio or VMLAB.
COFFCONVERT = $(OBJCOPY) --debugging
COFFCONVERT += --change-section-address .data-0x800000
COFFCONVERT += --change-section-address .bss-0x800000
COFFCONVERT += --change-section-address .noinit-0x800000
COFFCONVERT += --change-section-address .eeprom-0x810000
coff: $(TARGET).elf
@echo
@echo $(MSG_COFF) $(TARGET).cof
$(COFFCONVERT) -O coff-avr $< $(TARGET).cof
extcoff: $(TARGET).elf
@echo
@echo $(MSG_EXTENDED_COFF) $(TARGET).cof
$(COFFCONVERT) -O coff-ext-avr $< $(TARGET).cof
# Create final output files (.hex, .eep) from ELF output file.
%.hex: %.elf
@echo
@echo $(MSG_FLASH) $@
$(OBJCOPY) -O $(FORMAT) -R .eeprom $< $@
%.eep: %.elf
@echo
@echo $(MSG_EEPROM) $@
-$(OBJCOPY) -j .eeprom --set-section-flags=.eeprom="alloc,load" \
--change-section-lma .eeprom=0 --no-change-warnings -O $(FORMAT) $< $@ || exit 0
# Create extended listing file from ELF output file.
%.lss: %.elf
@echo
@echo $(MSG_EXTENDED_LISTING) $@
$(OBJDUMP) -h -S $< > $@
# Create a symbol table from ELF output file.
%.sym: %.elf
@echo
@echo $(MSG_SYMBOL_TABLE) $@
$(NM) -n $< > $@
# Create library from object files.
.SECONDARY : $(TARGET).a
.PRECIOUS : $(OBJ)
%.a: $(OBJ)
@echo
@echo $(MSG_CREATING_LIBRARY) $@
$(AR) $@ $(OBJ)
# Link: create ELF output file from object files.
.SECONDARY : $(TARGET).elf
.PRECIOUS : $(OBJ)
%.elf: $(OBJ)
@echo
@echo $(MSG_LINKING) $@
$(CC) $(ALL_CFLAGS) $^ --output $@ $(LDFLAGS)
# Compile: create object files from C source files.
$(OBJDIR)/%.o : %.c
@echo
@echo $(MSG_COMPILING) $<
$(CC) -c $(ALL_CFLAGS) $< -o $@
# Compile: create object files from C++ source files.
$(OBJDIR)/%.o : %.cpp
@echo
@echo $(MSG_COMPILING_CPP) $<
$(CC) -c $(ALL_CPPFLAGS) $< -o $@
# Compile: create assembler files from C source files.
%.s : %.c
$(CC) -S $(ALL_CFLAGS) $< -o $@
# Compile: create assembler files from C++ source files.
%.s : %.cpp
$(CC) -S $(ALL_CPPFLAGS) $< -o $@
# Assemble: create object files from assembler source files.
$(OBJDIR)/%.o : %.S
@echo
@echo $(MSG_ASSEMBLING) $<
$(CC) -c $(ALL_ASFLAGS) $< -o $@
# Create preprocessed source for use in sending a bug report.
%.i : %.c
$(CC) -E -mmcu=$(MCU) -I. $(CFLAGS) $< -o $@
# Target: clean project.
clean: begin clean_list end
clean_list :
@echo
@echo $(MSG_CLEANING)
$(REMOVE) $(TARGET).hex
$(REMOVE) $(TARGET).eep
$(REMOVE) $(TARGET).cof
$(REMOVE) $(TARGET).elf
$(REMOVE) $(TARGET).map
$(REMOVE) $(TARGET).sym
$(REMOVE) $(TARGET).lss
$(REMOVE) $(SRC:%.c=$(OBJDIR)/%.o)
$(REMOVE) $(SRC:%.c=$(OBJDIR)/%.lst)
$(REMOVE) $(SRC:.c=.s)
$(REMOVE) $(SRC:.c=.d)
$(REMOVE) $(SRC:.c=.i)
$(REMOVEDIR) .dep
# Create object files directory
$(shell mkdir $(OBJDIR) 2>/dev/null)
# Include the dependency files.
-include $(shell mkdir .dep 2>/dev/null) $(wildcard .dep/*)
# Listing of phony targets.
.PHONY : all begin finish end sizebefore sizeafter gccversion \
build elf hex eep lss sym coff extcoff \
clean clean_list program debug gdb-config

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testapp/testapp.c Normal file
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// Martin Thomas 4/2008
#include <avr/io.h>
#include <avr/interrupt.h>
#include <avr/wdt.h>
#include <util/delay.h>
#define LED_PORT PORTB
#define LED_DDR DDRB
#define LED_BIT PB2
#define BT_PORT PORTC
#define BT_DDR DDRC
#define BT_PIN PINC
#define BT_BIT PC7
static inline void my_wdt_off(void)
{
cli();
wdt_reset();
/* Clear WDRF in MCUSR */
MCUSR &= ~(1<<WDRF);
/* Write logical one to WDCE and WDE */
/* Keep old prescaler setting to prevent unintentional time-out */
WDTCSR |= (1<<WDCE) | (1<<WDE);
/* Turn off WDT */
WDTCSR = 0x00;
}
static void my_delay( void )
{
int i;
for ( i=0; i<500; i++ ) {
_delay_ms(1);
}
}
int main( void )
{
my_wdt_off();
LED_PORT |= ( 1<<LED_BIT );
LED_DDR |= ( 1<<LED_BIT );
BT_DDR &= ~( 1<<BT_BIT );
BT_PORT |= ( 1<<BT_BIT );
while ( 1 ) {
LED_PORT &= ~( 1<<LED_BIT );
my_delay();
LED_PORT |= ( 1<<LED_BIT );
my_delay();
if ( !( BT_PIN & ( 1<<BT_BIT ) ) ) {
/* start bootloader */
wdt_enable( WDTO_250MS );
while (1) { ; }
}
}
return 0; /* never reached */
}

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testavrdude/dummy.hex Normal file
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:103800000C942A1C0C94451C0C94451C0C94451CCF
:103810000C94451C0C94451C0C94451C0C94451CA4
:103820000C94451C0C94451C0C94451C0C94451C94
:103830000C94451C0C94451C0C94451C0C94451C84
:103840000C94451C0C94451C0C94451C0C94451C74
:103850000C94451C11241FBECFE5D4E0DEBFCDBFC4
:1038600010E0A0E6B0E0EEE2FFE302C005900D92AA
:10387000A036B107D9F710E0A0E6B0E001C01D9274
:10388000A53EB107E1F70C94871D0C94001C8F9A9C
:1038900084E083BD89E185BD089581E40E94E21E34
:1038A00086E50E94E21E82E50E94E21E82E40E94FA
:1038B000E21E8FE40E94E21E8FE40E94E21E84E575
:1038C0000E94E21E08958F929F92AF92BF92CF9274
:1038D000DF92EF92FF920F931F93CF93DF936C01D0
:1038E000962EEE24FF2487010E591F4FE7012196E3
:1038F000EC14FD0418F40E94E61E01C08FEFF801DD
:1039000080837E01C038D10570F3EE24FF248091BE
:10391000E400853721F08B3311F0C7018CC0A090F3
:10392000E200B090E300E199FECF8FB6F89426E470
:10393000921609F07DC08091E40087010E591F4F57
:10394000E7012196EEEFFFEFCE0EDF1E8537F1F493
:10395000F8018081282F3327FE01EE59FF4F808127
:103960009927982F8827282B392B7E010894E11C52
:10397000F11C41E08091E2009091E3000901FC011B
:1039800040935700E8951124029628C080E40E94D5
:103990004B1F8091E3000E944B1F8091E2000E9428
:1039A0004B1FF80180810E944B1F88E40E944B1F2F
:1039B0008091E3000E944B1F8091E2000E944B1F08
:1039C0007E010894E11CF11CCE59DF4F88810E94D2
:1039D0004B1F8091E2009091E30001969093E300E9
:1039E0008093E200C114D10409F0A5CF8091E400D6
:1039F000853769F485E0F50180935700E89507B6AF
:103A000000FCFDCF81E180935700E89511C08CE464
:103A10000E944B1F8B2D99270E944B1F8A2D0E94BD
:103A20004B1F80E00E944B1F88E893E10E94F51E27
:103A30008FBE8DE090E0DF91CF911F910F91FF90AD
:103A4000EF90DF90CF90BF90AF909F908F900895B0
:103A5000FF920F931F93CF93DF93EC01FFB6F8947F
:103A6000E199FECF8091E4008537E9F4653409F4EB
:103A700047C060E08091E2009091E3000E94EB1E5D
:103A80008C010E94E21E812F99270E94E21E8091E4
:103A9000E2009091E30002969093E3008093E200AD
:103AA000229739F72DC08B3359F580E20E944B1FC6
:103AB0008091E3000E944B1F8091E2000E944B1F07
:103AC0008FEF0E944B1F0E94E21E88E20E944B1F54
:103AD0008091E3000E944B1F8091E2000E944B1FE7
:103AE0008FEF0E944B1F0E94E21E8091E200909196
:103AF000E30001969093E3008093E2002297A9F6F9
:103B0000FFBEDF91CF911F910F91FF900895CFE5F8
:103B1000D4E0DEBFCDBFF89401E005BF82E085BFF1
:103B2000A698AE9A60E087E190E00E94D81E9E9B26
:103B300008C0AE9805BF15BEE0916000F09161002D
:103B40000995BB9AC39A0E94401F0E94471C0E947D
:103B5000E61E813611F489E528C18134F9F40E940A
:103B6000E61E99279093E3008093E200182F002728
:103B70000E94E61E282F3327202B312B3093E300A1
:103B80002093E2008091E400853709F083C0220F82
:103B9000331F3093E3002093E2007CC0823689F427
:103BA00089E50E94E21E8091E400853729F480E0D7
:103BB0000E94E21E80E8F9C080E00E94E21E80E4DC
:103BC000F4C0823489F40E94E61E9927182F00273A
:103BD0000E94E61E9927082B192B0E94E61E682FCB
:103BE000C8010E94631CE1C0873689F40E94E61E6A
:103BF0009927182F00270E94E61E9927082B192BBA
:103C00000E94E61E682FC8010E94281DA0CF85369D
:103C1000B1F58091E4008537F9F41092E300109239
:103C2000E20043E020E030E0F90140935700E895DE
:103C300007B600FCFDCFC90180589F4F9C0158E397
:103C40008030950788F39093E3008093E20081E150
:103C500080935700E8951EC08B33E1F48CEA0E94F4
:103C60004B1F80E80E944B1F80E00E944B1F80E0AA
:103C70000E944B1F8CE893E20E94F51E0BC0853416
:103C800059F488E190E028E00FB6F894A89581BD3A
:103C90000FBE21BD8DE089C0803539F48091E400EC
:103CA0008B33C1F70E94511FF5CF8C3439F48091CA
:103CB000E4008B3379F70E946D1FECCF803711F44D
:103CC00083E573C0823711F48FEF6FC08E3459F4DF
:103CD0008091E400853711F488E967C08B3309F0DF
:103CE00036CF8EED62C08C3619F40E94E61ED2CF1C
:103CF000843741F485E70E94E21E8BE30E94E21EB6
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:103D1000C398C0CF893721F40E94E61EC39ABACF58
:103D2000843529F40E94E61E8093E400B3CF8335E6
:103D300019F40E944D1C0BCF863529F480E30E94B4
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:103D500041F483E00E94E21E84E90E94E21E8EE1AB
:103D600024C08B3309F0F3CE03E0015080E30E94BE
:103D70004B1F80E00E944B1F802F0E944B1F8FEF34
:103D80000E944B1F0E94E21E002379F7E0CE8D3483
:103D900041F488B398E0892788BB84E70E94E21E3B
:103DA00079CF8B3109F4D3CE8FE30E94E21ECFCEC0
:103DB0009C01832F992780BD29B988E18AB986E8BB
:103DC00080BD08955D9BFECF8CB908955F9BFECFAB
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:103DF000DEB722970FB6F894DEBF0FBECDBF039695
:103E000065E070E00E94831F9B0144275527DA017B
:103E1000C90163E0880F991FAA1FBB1F6A95D1F7DC
:103E2000821B930BA40BB50B9C0119821A8289810A
:103E30009A818217930750F489819A810196898328
:103E40009A8389819A8182179307B0F322960FB6DD
:103E5000F894DEBF0FBECDBFDF91CF910895D89803
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:103E8000C79A87B3806B87BBD09ABE9883E58DB9FC
:103E90000E94351F08958FB9779BFECF8FB1992768
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:103EE000351F08950E94511F8CEA0E944B1F80E8E5
:103EF0000E944B1F80E00E944B1F80E00E944B1FDE
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:103F1000BB1FA617B70710F0A61BB70B881F991F6A
:0E3F20005A95A9F780959095BC01CD010895A2
:0400000300003800C1
:00000001FF

20
testavrdude/go.cmd Normal file
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@echo off
rem Use avrdude as programming-software with the AVRProg compatible bootloader
rem Martin Thomas, 2006
rem Verfiy that the bootloader is configured with #define DEVTYPE DEVTYPE_ISP
rem since it seems that avrdude does not work with "Boot" device-types and needs
rem ISP device-types (at least in version 5.1 as in WinAVR 4/06)
set HEXFILE=cansniffer.hex
set PROGRAMMER=avr109
set PORT=com2
set BAUD=19200
set PART=atmega32
rem * disable safemode - bootloader can not "restore" fuses anyway
set DIS_SAVE=-u
avrdude %DIS_SAVE% -p %PART% -P %PORT% -c %PROGRAMMER% -b %BAUD% -v -U flash:w:%HEXFILE%
rem pause

151
uart.c
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@ -1,151 +0,0 @@
#include <avr/io.h>
/* most of the definitions borrowed from Peter Fleury's UART-Library
extende for control-register C and ATmega169 */
#if defined(__AVR_ATmega8__) || defined(__AVR_ATmega16__) || defined(__AVR_ATmega32__) \
|| defined(__AVR_ATmega8515__) || defined(__AVR_ATmega8535__) \
|| defined(__AVR_ATmega323__)
/* ATMega with one USART */
#define ATMEGA_USART
#define UART0_UBRR_HIGH UBRRH
#define UART0_UBRR_LOW UBRRL
#define UART0_RECEIVE_INTERRUPT SIG_UART_RECV
#define UART0_TRANSMIT_INTERRUPT SIG_UART_DATA
#define UART0_STATUS UCSRA
#define UART0_CONTROL UCSRB
#define UART0_DATA UDR
#define UART0_UDRIE UDRIE
#elif defined(__AVR_ATmega162__)
/* ATMega with two USART */
#define ATMEGA_USART0
#define ATMEGA_USART1
#define UART0_UBRR_HIGH UBRR0H
#define UART0_UBRR_LOW UBRR0L
#define UART1_UBRR_HIGH UBRR1H
#define UART1_UBRR_LOW UBRR1L
#define UART0_RECEIVE_INTERRUPT SIG_USART0_RECV
#define UART1_RECEIVE_INTERRUPT SIG_USART1_RECV
#define UART0_TRANSMIT_INTERRUPT SIG_USART0_DATA
#define UART1_TRANSMIT_INTERRUPT SIG_USART1_DATA
#define UART0_STATUS UCSR0A
#define UART0_CONTROL UCSR0B
#define UART0_CONTROL2 UCSR0C
#define UART0_DATA UDR0
#define UART0_UDRIE UDRIE0
#define UART1_STATUS UCSR1A
#define UART1_CONTROL UCSR1B
#define UART1_CONTROL2 UCSR1C
#define UART1_DATA UDR1
#define UART1_UDRIE UDRIE1
#elif defined(__AVR_ATmega64__) || defined(__AVR_ATmega128__) || defined(__AVR_AT90CAN128__)
/* ATMega with two USART */
#define ATMEGA_USART0
#define ATMEGA_USART1
#define UART0_UBRR_HIGH UBRR0H
#define UART0_UBRR_LOW UBRR0L
#define UART1_UBRR_HIGH UBRR1H
#define UART1_UBRR_LOW UBRR1L
#define UART0_RECEIVE_INTERRUPT SIG_UART0_RECV
#define UART1_RECEIVE_INTERRUPT SIG_UART1_RECV
#define UART0_TRANSMIT_INTERRUPT SIG_UART0_DATA
#define UART1_TRANSMIT_INTERRUPT SIG_UART1_DATA
#define UART0_STATUS UCSR0A
#define UART0_CONTROL UCSR0B
#define UART0_CONTROL2 UCSR0C
#define UART0_DATA UDR0
#define UART0_UDRIE UDRIE0
#define UART1_STATUS UCSR1A
#define UART1_CONTROL UCSR1B
#define UART1_CONTROL2 UCSR1C
#define UART1_DATA UDR1
#define UART1_UDRIE UDRIE1
#elif defined(__AVR_ATmega169__)
#define ATMEGA_USART
#define UART0_UBRR_HIGH UBRR0H
#define UART0_UBRR_LOW UBRR0L
// TODO #define UART0_RECEIVE_INTERRUPT SIG_UART_RECV
// TODO #define UART0_TRANSMIT_INTERRUPT SIG_UART_DATA
#define UART0_STATUS UCSR0A
#define UART0_CONTROL UCSR0B
#define UART0_CONTROL2 UCSR0C
#define UART0_DATA UDR0
#define UART0_DOUBLEAVAIL
// TODO #define UART0_UDRIE UDRIE
#else
#error "Processor type not supported in uart.c !"
#endif
void USART_Init(unsigned int baudrate, unsigned char doublespeed)
{
// Set baud rate
UART0_UBRR_HIGH = (unsigned char)(baudrate>>8);
UART0_UBRR_LOW = (unsigned char)baudrate;
// Enable 2x speed - TODO adopt to all uCs
#ifdef UART0_DOUBLEAVAIL
if (doublespeed) UCSR0A = (1<<U2X0);
#endif
#if defined (ATMEGA_USART)
/* Enable USART receiver and transmitter and disable interrupts */
UART0_CONTROL = (1<<RXEN)|(1<<TXEN)|(0<<RXCIE)|(0<<UDRIE);
/* Set frame format: asynchronous, 8data, no parity, 1stop bit */
#ifdef URSEL
UCSRC = (1<<URSEL)|(3<<UCSZ0);
#else
UCSRC = (3<<UCSZ0);
#endif
#elif defined (ATMEGA_USART0 )
/* Enable USART receiver and transmitter and disable interrupts */
UART0_CONTROL = (1<<RXEN0)|(1<<TXEN0)|(0<<RXCIE0)|(0<<UDRIE0);
/* Set frame format: asynchronous, 8data, no parity, 1stop bit */
#ifdef URSEL0
UCSR0C = (1<<URSEL0)|(3<<UCSZ00);
#else
UCSR0C = (3<<UCSZ00);
#endif
#endif
}
void sendchar(char data)
{
int i = 0;
UART0_DATA = data;
if(SREG & 0x80)
{
while ( !(UART0_STATUS&0x40) && (i<10000) )
{
i++;
}
}
else
while( !(UART0_STATUS&0x40) );
UART0_STATUS=UART0_STATUS|0x40; //delete TXCflag
}
char recchar(void)
{
int i = 0;
if(SREG & 0x80)
{
// while (!(UART0_STATUS & (1<<RXC0)) && (i<10000))
while (!(UART0_STATUS & 0x80) && (i<10000))
{
i++;
}
}
else
// while(!(UART0_STATUS & (1<<RXC0)));
while(!(UART0_STATUS & 0x80));
return UART0_DATA ;
}

13
uart.h
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@ -1,13 +0,0 @@
#ifndef UART_H
#define UART_H
#define UART_BAUD_SELECT(baudRate,xtalCpu) (((xtalCpu)+(baudRate*8))/((baudRate)*16)-1)
#define UARTDOUBLE 1
#define UARTSINGLE 0
void USART_Init(unsigned int, unsigned char);
void sendchar(char);
char recchar(void);
#endif