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Version 0.80beta3 (20060528)

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This commit is contained in:
Olaf Rempel 2006-05-31 14:30:05 +02:00
parent 31b7584b2f
commit 5cc82b476b
12 changed files with 221 additions and 98 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></Project>

1
avrprog_boot.pnps Normal file
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@ -0,0 +1 @@
<pd><ViewState><e p="avrprog_boot" x="true"></e></ViewState></pd>

2
ldscripts_no_vector/avr4.x
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@ -1,4 +1,4 @@
/* Default linker script, for normal executables */ /* MODIFIED LINKER SCRIPT - BOOTLOADER: without .vectors */
OUTPUT_FORMAT("elf32-avr","elf32-avr","elf32-avr") OUTPUT_FORMAT("elf32-avr","elf32-avr","elf32-avr")
OUTPUT_ARCH(avr:4) OUTPUT_ARCH(avr:4)
MEMORY MEMORY

9
ldscripts_no_vector/avr5.x
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@ -1,4 +1,4 @@
/* Default linker script, for normal executables */ /* MODIFIED LINKER SCRIPT - BOOTLOADER: without .vectors */
OUTPUT_FORMAT("elf32-avr","elf32-avr","elf32-avr") OUTPUT_FORMAT("elf32-avr","elf32-avr","elf32-avr")
OUTPUT_ARCH(avr:5) OUTPUT_ARCH(avr:5)
MEMORY MEMORY
@ -66,11 +66,14 @@ SECTIONS
.rela.bss : { *(.rela.bss) } .rela.bss : { *(.rela.bss) }
.rel.plt : { *(.rel.plt) } .rel.plt : { *(.rel.plt) }
.rela.plt : { *(.rela.plt) } .rela.plt : { *(.rela.plt) }
/* Internal text space or external memory */ /* Internal text space or external memory */
/DISCARD/ : { *(.vectors); }
/* BOOTLOADER-MODIFICATION - not interrupt-vectors */
/DISCARD/ : { *(.vectors) }
.text : .text :
{ {
/* *(.vectors) */ /* *(.vectors) */ /* BOOTLOADER-MODIFICATION ! */
__ctors_start = . ; __ctors_start = . ;
*(.ctors) *(.ctors)
__ctors_end = . ; __ctors_end = . ;

80
main.c
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@ -1,7 +1,7 @@
/***************************************************************************** /*****************************************************************************
* *
* AVRPROG compatible boot-loader * AVRPROG compatible boot-loader
* Version : 0.80beta2 (May 2006) * Version : 0.80beta3 (May 2006)
* Compiler : avr-gcc 3.4.6 / avr-libc 1.4.4 * Compiler : avr-gcc 3.4.6 / avr-libc 1.4.4
* size : depends on features and startup ( minmal features < 512 words) * size : depends on features and startup ( minmal features < 512 words)
* by : Martin Thomas, Kaiserslautern, Germany * by : Martin Thomas, Kaiserslautern, Germany
@ -23,7 +23,7 @@
* *
**************************************************************************** ****************************************************************************
* *
* See the makefile for information how to adopt the linker-settings to * See the makefile for information how to adapt the linker-settings to
* the selected Boot Size (BOOTSIZE=xxxx), the AVR clock-frequency and the * the selected Boot Size (BOOTSIZE=xxxx), the AVR clock-frequency and the
* MCU-type in * MCU-type in
* *
@ -36,21 +36,28 @@
* 0x34C - atmega128 * 0x34C - atmega128
* 0x352 - at90can128 * 0x352 - at90can128
* bytes size and should fit into a 512 word (0x400 byte) bootloader-section. * bytes size and should fit into a 512 word (0x400 byte) bootloader-section.
* The above values depend on the compiler-version and may differ from
* your results.
* *
****************************************************************************/ ****************************************************************************/
/* /*
Does not work reliably so far: TODOs:
- lock bits set - 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
*/ */
// tabsize: 4
// programmers-notepad tabsize 4
#define VERSION_HIGH '0'
#define VERSION_LOW '8'
/* MCU frequency */ /* MCU frequency */
#define F_CPU 7372800 #ifndef F_CPU
// #define F_CPU 7372800
#define F_CPU (7372800/2)
#endif
/* UART Baudrate */ /* UART Baudrate */
// #define BAUDRATE 9600
// #define BAUDRATE 19200
#define BAUDRATE 115200 #define BAUDRATE 115200
/* use "Double Speed Operation" */ /* use "Double Speed Operation" */
@ -59,6 +66,13 @@
/* use second UART on mega128 / can128 */ /* use second UART on mega128 / can128 */
//#define UART_USE_SECOND //#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 * Pin "STARTPIN" on port "STARTPORT" in this port has to grounded
* (active low) to start the bootloader * (active low) to start the bootloader
@ -72,8 +86,9 @@
* Select startup-mode * Select startup-mode
* SIMPLE-Mode - Jump to bootloader main BL-loop if key is * SIMPLE-Mode - Jump to bootloader main BL-loop if key is
* pressed (Pin grounded) "during" reset or jump to the * pressed (Pin grounded) "during" reset or jump to the
* application if the pin is not grounded (=pulled up by * application if the pin is not grounded. The internal
* internal pull-up-resistor) * pull-up resistor is enabled during the startup and
* gets disabled before the application is started.
* POWERSAVE-Mode - Startup is separated in two loops * POWERSAVE-Mode - Startup is separated in two loops
* which makes power-saving a little easier if no firmware * which makes power-saving a little easier if no firmware
* is on the chip. Needs more memory * is on the chip. Needs more memory
@ -82,20 +97,24 @@
* parser-loop on reset * parser-loop on reset
* F_CPU in BOOTICEMODE must be 7372800 Hz to be compatible * F_CPU in BOOTICEMODE must be 7372800 Hz to be compatible
* with the org. JTAGICE-Firmware * with the org. JTAGICE-Firmware
* WAIT-mode waits 1 sec for the S command if nothing is recived * WAIT-mode waits 1 sec for the defined character if nothing
* then the user prog is started .. * is recived then the user prog is started.
*/ */
#define START_SIMPLE #define START_SIMPLE
//#define START_WAIT //#define START_WAIT
//#define START_POWERSAVE //#define START_POWERSAVE
//#define START_BOOTICE //#define START_BOOTICE
/* character to start the bootloader in mode START_WAIT */
#define START_WAIT_UARTCHAR 'S'
/* wait 1s in START_WAIT mode (10ms steps) */ /* wait 1s in START_WAIT mode (10ms steps) */
#define WAIT_VALUE 100 #define WAIT_VALUE 100
/* /*
* enable/disable readout of fuse and lock-bits * enable/disable readout of fuse and lock-bits
* (will not work for Mega169 since not supported by AVRPROG 1.37 * (AVRPROG has to detect the AVR correctly by device-code
* to show the correct information).
*/ */
//#define ENABLEREADFUSELOCK //#define ENABLEREADFUSELOCK
@ -108,17 +127,34 @@
*/ */
//#define WRITELOCKBITS //#define WRITELOCKBITS
#define VERSION_HIGH '0'
#define VERSION_LOW '8'
#define GET_LOCK_BITS 0x0001
#define GET_LOW_FUSE_BITS 0x0000
#define GET_HIGH_FUSE_BITS 0x0003
#define GET_EXTENDED_FUSE_BITS 0x0002
#include <stdint.h> #include <stdint.h>
#include <avr/io.h> #include <avr/io.h>
#include <avr/wdt.h> #include <avr/wdt.h>
#include <avr/boot.h> #include <avr/boot.h>
#include <avr/pgmspace.h> #include <avr/pgmspace.h>
#include <util/delay.h> // #include <util/delay.h>
#include <avr/delay.h>
#include "chipdef.h" #include "chipdef.h"
uint8_t gBuffer[SPM_PAGESIZE]; uint8_t gBuffer[SPM_PAGESIZE];
#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
static void sendchar(uint8_t data) static void sendchar(uint8_t data)
{ {
while (!(UART_STATUS & (1<<UART_TXREADY))); while (!(UART_STATUS & (1<<UART_TXREADY)));
@ -231,6 +267,7 @@ static inline uint16_t readEEpromPage(uint16_t address, pagebuf_t size)
return address; return address;
} }
#if defined(ENABLEREADFUSELOCK)
static uint8_t read_fuse_lock(uint16_t addr) static uint8_t read_fuse_lock(uint16_t addr)
{ {
uint8_t mode = (1<<BLBSET) | (1<<SPMEN); uint8_t mode = (1<<BLBSET) | (1<<SPMEN);
@ -250,6 +287,7 @@ static uint8_t read_fuse_lock(uint16_t addr)
); );
return retval; return retval;
} }
#endif
static void send_boot(void) static void send_boot(void)
{ {
@ -287,7 +325,7 @@ int main(void)
UART_CTRL = UART_CTRL_DATA; UART_CTRL = UART_CTRL_DATA;
UART_CTRL2 = UART_CTRL2_DATA; UART_CTRL2 = UART_CTRL2_DATA;
#ifdef START_POWERSAVE #if defined(START_POWERSAVE)
/* /*
This is an adoption of the Butterfly Bootloader startup-sequence. This is an adoption of the Butterfly Bootloader startup-sequence.
It may look a little strange but separating the login-loop from It may look a little strange but separating the login-loop from
@ -333,7 +371,7 @@ int main(void)
while (1) { while (1) {
if (UART_STATUS & (1<<UART_RXREADY)) if (UART_STATUS & (1<<UART_RXREADY))
if (UART_DATA == 'S') if (UART_DATA == START_WAIT_UARTCHAR)
break; break;
if (cnt++ >= WAIT_VALUE) { if (cnt++ >= WAIT_VALUE) {
@ -484,11 +522,13 @@ int main(void)
sendchar(VERSION_HIGH); sendchar(VERSION_HIGH);
sendchar(VERSION_LOW); sendchar(VERSION_LOW);
// Return Signature Byte // 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') { } else if (val == 's') {
sendchar(SIG_BYTE1);
sendchar(SIG_BYTE2);
sendchar(SIG_BYTE3); sendchar(SIG_BYTE3);
sendchar(SIG_BYTE2);
sendchar(SIG_BYTE1);
/* ESC */ /* ESC */
} else if(val != 0x1b) { } else if(val != 0x1b) {

51
makefile
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@ -1,5 +1,8 @@
# Hey Emacs, this is a -*- makefile -*- # 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. # WinAVR Sample makefile written by Eric B. Weddington, Jörg Wunsch, et al.
# Released to the Public Domain # Released to the Public Domain
# Please read the make user manual! # Please read the make user manual!
@ -34,19 +37,25 @@
# user defined values # user defined values
# MCU name # MCU name
## MCU = atmega8
## MCU = atmega16 ## MCU = atmega16
MCU = atmega8 MCU = atmega32
## MCU = atmega32 ## MCU = atmega128
## MCU = at90can128 ## MCU = at90can128
#/* Select Boot Size in Words (select one, comment out the others) */ #/* Select Boot Size in Words (select one, comment out the others) */
## NO! BOOTSIZE=128 ## NO! BOOTSIZE=128
## NO! BOOTSIZE=256 ## NO! BOOTSIZE=256
## MAYBE: BOOTSIZE=512
BOOTSIZE=512 BOOTSIZE=512
#BOOTSIZE=1024 ## BOOTSIZE=1024
## BOOTSIZE=2048 ## BOOTSIZE=2048
# /* 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
################## BOOTLOADER ###################### ################## BOOTLOADER ######################
# mt: Boot loader support. So far not done with a separate section # mt: Boot loader support. So far not done with a separate section
@ -55,7 +64,9 @@ BOOTSIZE=512
# "word", gcc toolchain needs "byte"-address # "word", gcc toolchain needs "byte"-address
# (see LDFLAGS further down) # (see LDFLAGS further down)
##
ifeq ($(MCU), atmega8) ifeq ($(MCU), atmega8)
BFD_MACH=avr4
ifeq ($(BOOTSIZE), 128) ifeq ($(BOOTSIZE), 128)
MT_BOOTLOADER_ADDRESS = 0x1F00 MT_BOOTLOADER_ADDRESS = 0x1F00
endif endif
@ -68,9 +79,11 @@ endif
ifeq ($(BOOTSIZE), 1024) ifeq ($(BOOTSIZE), 1024)
MT_BOOTLOADER_ADDRESS = 0x1800 MT_BOOTLOADER_ADDRESS = 0x1800
endif endif
endif endif
##
ifeq ($(MCU), atmega16) ifeq ($(MCU), atmega16)
BFD_MACH=avr5
ifeq ($(BOOTSIZE), 128) ifeq ($(BOOTSIZE), 128)
MT_BOOTLOADER_ADDRESS = 0x3F00 MT_BOOTLOADER_ADDRESS = 0x3F00
endif endif
@ -83,9 +96,11 @@ endif
ifeq ($(BOOTSIZE), 1024) ifeq ($(BOOTSIZE), 1024)
MT_BOOTLOADER_ADDRESS = 0x3800 MT_BOOTLOADER_ADDRESS = 0x3800
endif endif
endif endif
##
ifeq ($(MCU), atmega169) ifeq ($(MCU), atmega169)
BFD_MACH=avr5
ifeq ($(BOOTSIZE), 128) ifeq ($(BOOTSIZE), 128)
MT_BOOTLOADER_ADDRESS = 0x3F00 MT_BOOTLOADER_ADDRESS = 0x3F00
endif endif
@ -98,9 +113,11 @@ endif
ifeq ($(BOOTSIZE), 1024) ifeq ($(BOOTSIZE), 1024)
MT_BOOTLOADER_ADDRESS = 0x3800 MT_BOOTLOADER_ADDRESS = 0x3800
endif endif
endif endif
##
ifeq ($(MCU), atmega32) ifeq ($(MCU), atmega32)
BFD_MACH=avr5
ifeq ($(BOOTSIZE), 256) ifeq ($(BOOTSIZE), 256)
MT_BOOTLOADER_ADDRESS = 0x7E00 MT_BOOTLOADER_ADDRESS = 0x7E00
endif endif
@ -113,9 +130,11 @@ endif
ifeq ($(BOOTSIZE), 2048) ifeq ($(BOOTSIZE), 2048)
MT_BOOTLOADER_ADDRESS = 0x7000 MT_BOOTLOADER_ADDRESS = 0x7000
endif endif
endif endif
##
ifeq ($(MCU), atmega128) ifeq ($(MCU), atmega128)
BFD_MACH=avr5
ifeq ($(BOOTSIZE), 512) ifeq ($(BOOTSIZE), 512)
MT_BOOTLOADER_ADDRESS = 0x1FC00 MT_BOOTLOADER_ADDRESS = 0x1FC00
endif endif
@ -128,9 +147,11 @@ endif
ifeq ($(BOOTSIZE), 4096) ifeq ($(BOOTSIZE), 4096)
MT_BOOTLOADER_ADDRESS = 0x1E000 MT_BOOTLOADER_ADDRESS = 0x1E000
endif endif
endif endif
##
ifeq ($(MCU), at90can128) ifeq ($(MCU), at90can128)
BFD_MACH=avr5
ifeq ($(BOOTSIZE), 512) ifeq ($(BOOTSIZE), 512)
MT_BOOTLOADER_ADDRESS = 0x1FC00 MT_BOOTLOADER_ADDRESS = 0x1FC00
endif endif
@ -269,9 +290,15 @@ LDFLAGS += $(PRINTF_LIB) $(SCANF_LIB) $(MATH_LIB)
################## BOOTLOADER ###################### ################## BOOTLOADER ######################
# MT_BOOTLOADER_ADDRESS (=Start of Boot Loader section # MT_BOOTLOADER_ADDRESS (=Start of Boot Loader section
# in bytes - not words) is defined above. # in bytes - not words) as defined above.
LDFLAGS += -Wl,--section-start=.text=$(MT_BOOTLOADER_ADDRESS) 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/$(BFD_MACH).x
CFLAGS += -DBOOTLOADERHASNOVECTORS
endif
# Programming support using avrdude. Settings and variables. # Programming support using avrdude. Settings and variables.
@ -285,8 +312,8 @@ LDFLAGS += -Wl,--section-start=.text=$(MT_BOOTLOADER_ADDRESS)
AVRDUDE_PROGRAMMER = stk500v2 AVRDUDE_PROGRAMMER = stk500v2
# com1 = serial port. Use lpt1 to connect to parallel port. # com1 = serial port. Use lpt1 to connect to parallel port.
#AVRDUDE_PORT = com1 # programmer connected to serial device AVRDUDE_PORT = com1 # programmer connected to serial device
AVRDUDE_PORT = /dev/ttyS0 # programmer connected to serial device #AVRDUDE_PORT = /dev/ttyS0 # programmer connected to serial device
AVRDUDE_WRITE_FLASH = -U flash:w:$(TARGET).hex AVRDUDE_WRITE_FLASH = -U flash:w:$(TARGET).hex
#AVRDUDE_WRITE_EEPROM = -U eeprom:w:$(TARGET).eep #AVRDUDE_WRITE_EEPROM = -U eeprom:w:$(TARGET).eep

9
mega128.h
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@ -1,11 +1,14 @@
#ifndef _MEGA128_H_ #ifndef _MEGA128_H_
#define _MEGA128_H_ #define _MEGA128_H_
#define DEVTYPE 0x44 /* Part-Code ISP */
#define DEVTYPE_ISP 0x43
/* Part-Code Boot */
#define DEVTYPE_BOOT 0x44
#define SIG_BYTE3 0x1E #define SIG_BYTE1 0x1E
#define SIG_BYTE2 0x97 #define SIG_BYTE2 0x97
#define SIG_BYTE1 0x02 #define SIG_BYTE3 0x02
#ifdef UART_DOUBLESPEED #ifdef UART_DOUBLESPEED

12
mega128can.h
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@ -1,12 +1,16 @@
#ifndef _MEGA128CAN_H_ #ifndef _MEGA128CAN_H_
#define _MEGA128CAN_H_ #define _MEGA128CAN_H_
/* Dummy device code for now, must be same as used in avrdude.conf */ /* Dummy: use ATmega128 device-code for now,
#define DEVTYPE 0x43 must be same as used in avrdude.conf */
/* Part-Code ISP */
#define DEVTYPE_ISP 0x43
/* Part-Code Boot */
#define DEVTYPE_BOOT 0x44
#define SIG_BYTE3 0x1E #define SIG_BYTE1 0x1E
#define SIG_BYTE2 0x97 #define SIG_BYTE2 0x97
#define SIG_BYTE1 0x81 #define SIG_BYTE3 0x81
#ifdef UART_DOUBLESPEED #ifdef UART_DOUBLESPEED

9
mega16.h
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@ -1,11 +1,14 @@
#ifndef _MEGA16_H_ #ifndef _MEGA16_H_
#define _MEGA16_H_ #define _MEGA16_H_
#define DEVTYPE 0x75 /* Part-Code ISP */
#define DEVTYPE_ISP 0x74
/* Part-Code Boot */
#define DEVTYPE_BOOT 0x75
#define SIG_BYTE3 0x1E #define SIG_BYTE1 0x1E
#define SIG_BYTE2 0x94 #define SIG_BYTE2 0x94
#define SIG_BYTE1 0x03 #define SIG_BYTE3 0x03
#ifdef UART_DOUBLESPEED #ifdef UART_DOUBLESPEED

9
mega32.h
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@ -1,11 +1,14 @@
#ifndef _MEGA32_H_ #ifndef _MEGA32_H_
#define _MEGA32_H_ #define _MEGA32_H_
#define DEVTYPE 0x73 /* Part-Code ISP */
#define DEVTYPE_ISP 0x72
/* Part-Code Boot */
#define DEVTYPE_BOOT 0x73
#define SIG_BYTE3 0x1E #define SIG_BYTE1 0x1E
#define SIG_BYTE2 0x95 #define SIG_BYTE2 0x95
#define SIG_BYTE1 0x02 #define SIG_BYTE3 0x02
#ifdef UART_DOUBLESPEED #ifdef UART_DOUBLESPEED

10
mega8.h
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@ -1,12 +1,14 @@
#ifndef _MEGA8_H_ #ifndef _MEGA8_H_
#define _MEGA8_H_ #define _MEGA8_H_
#define DEVTYPE 0x76 /* Part-Code ISP */
//#define DEVTYPE 0x77 #define DEVTYPE_ISP 0x76
/* Part-Code BOOT */
#define DEVTYPE_BOOT 0x77
#define SIG_BYTE3 0x1E #define SIG_BYTE1 0x1E
#define SIG_BYTE2 0x93 #define SIG_BYTE2 0x93
#define SIG_BYTE1 0x07 #define SIG_BYTE3 0x07
#ifdef UART_DOUBLESPEED #ifdef UART_DOUBLESPEED

119
readme.txt
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@ -2,17 +2,18 @@
====================================================== ======================================================
ATMEL AVR UART Bootloader for AVR-GCC/avr-libc ATMEL AVR UART Bootloader for AVR-GCC/avr-libc
based on the AVR Butterfly bootloader code
by Martin Thomas, Kaiserslautern, Germany by Martin Thomas, Kaiserslautern, Germany
mthomas@rhrk.uni-kl.de mthomas@rhrk.uni-kl.de
eversmith@heizung-thomas.de eversmith@heizung-thomas.de
http://www.siwawi.arubi.uni-kl.de/avr_projects http://www.siwawi.arubi.uni-kl.de/avr_projects
Addtional code and improvements provided by ** Addtional code and improvements contributed **
Uwe Bonnes, Bjoern Riemer and Olaf Rempel. ** 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.
====================================================== ======================================================
@ -26,14 +27,53 @@ Programming-Software (on the "PC-Side"):
* avrdude available at http://savannah.nongnu.org/projects/avrdude/ * avrdude available at http://savannah.nongnu.org/projects/avrdude/
"Multiplattform" "Multiplattform"
* Installation instructions at the end of this file.
28. May 2006 - Version 0.8beta3
* Support 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
you application.
27. May 2006 - Version 0.8beta2 27. May 2006 - Version 0.8beta2
More improvements contributed by Olaf Rempel. * More very well done improvements contributed by Olaf Rempel.
* Olaf Rempel also modified the STARTUP_WAIT method.
21. May 2006 - Version 0.8beta 21. May 2006 - Version 0.8beta
Version contributed by Olaf Rempel. He has done a lot of modifications. * Version contributed by Olaf Rempel. He has done a lot of modifications.
-> "cleaner code", smaller binaries. -> "cleaner code", smaller binaries.
09. Feb. 2006 - Version 0.75 09. Feb. 2006 - Version 0.75
@ -50,13 +90,14 @@ Version contributed by Olaf Rempel. He has done a lot of modifications.
* (Version 0.6 has never been available on the web-page) * (Version 0.6 has never been available on the web-page)
* ATmega128 support * ATmega128 support
* code cleanup * code cleanup
* Tested with ATmega8, ATmega32 and ATmega128 * This version has been tested with ATmega8, ATmega32 and
ATmega128
7. Apr. 2004 - Version 0.5 7. Apr. 2004 - Version 0.5
* added different startup-methods * added different startup-methods
* compatible with ATmega8 now * compatible with ATmega8 now
* included makefile adopted to ATmega8 now * included makefile adapted to ATmega8 now
(ATmega16 options still available) (ATmega16 options still available)
* fixed jump to application which did not work * fixed jump to application which did not work
reliably before reliably before
@ -127,61 +168,57 @@ not enabled (TODO).
--------------- Installation ----------------- --------------- Installation -----------------
- Change the MCU type in the makefile (so far - Change the MCU type in the makefile.
ATmega16 has been tested, ATmega169, ATmega8
and ATmega32 should be o.k. too.
- Change the boot(loader)-size in Makefile, this - Change the boot(loader)-size in Makefile. The needed
bootloader is larger than 512 words (1024 bytes), space depends on the features selected in main.c
so select at least _B1024!
- Change the XTAL in Makefile to the clock-frequency - Set baudrate in main.c, a doublespeed configuration-option
of your board (keep BAUDRATE at 19200). See is available too.
the datasheet for frequencies with minimum
error at 19200bps and select Crystal/Oscillator
to get minimum errors.
- Change the start-condition in Makefile. Default - Change the F_CPU in main.c to the clock-frequency
is: enter bootloader if Pin A7 is connected to of your board. See the datasheet for frequencies
GND during reset/startup with minimum error at the selected baudrate.
- Select the start-condition in main.c.
- Please use at least avr-gcc 3.3.1/avr-libc 1.0 - Please use at least avr-gcc 3.3.1/avr-libc 1.0
or WINAVR Sept. 2003 or later to compile and link or WINAVR Sept. 2003 or later to compile and link
the bootloader. this bootloader.
- upload the hex-File to the AVR (STK500, STK200, SP12 - Upload the hex-File to the AVR (STK500, STK200, SP12
etc.) evertool, AVR910 etc.)
- program the "Boot Flash section size" (BOOTSZ fuses) - Program the "Boot Flash section size" (BOOTSZ fuses)
according to the boot-size selected in main.c according to the boot-size selected in the makefile
i.e. BOOTSZ=00 for boot-size 1024 words on ATmega16 i.e. BOOTSZ=00 for boot-size 1024 words on ATmega16
- enable the BOOT Reset Vector (BOOTTRST=0) - enable the BOOT Reset Vector fuse (BOOTTRST=0)
- Set the lock bits to protect the bootloader from - Set the lock bits to protect the bootloader from
SPM-writes (Boot Loader Protection Mode 2 in STK500- 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 - 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- - Reset the AVR while fullfilling the bootloader start-
condition. Which means connect PA7 to GND in the default condition. (Default: selected pin connected to GND).
config during reste/power-cycle. Keep the connection The condition must be "true" until you see the
or hold the key down until you see the AVRPROG dialog! AVRPROG dialog or avrdude connects.
- Start AVRPROG (AVRStuido/Tools or stand-alone) - - Start AVRPROG (AVRStuido/Tools or stand-alone)
keep PA7 grounded! (avrdude is supported too, check avrdude is supported too, check the avrdude manual
the avrdude manual for command-line options). for command-line options.
- AVRPROG will detect the bootloader, you may release - AVRPROG or avrdude should detect the bootloader.
PA7 now
- see AVRStuido online-help for more information how - see AVRStudio online-help for more information how
to use AVRPROG to use AVRPROG
- make sure to EXIT from AVRPROG (button) to start - 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 Martin