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cleanup 

- dos2unix
- remove trailing spaces
This commit is contained in:
Olaf Rempel 2006-05-19 21:00:23 +02:00
parent 919606b3ab
commit ba471f01de
8 changed files with 701 additions and 701 deletions
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378
chipdef.h
View File

@ -1,190 +1,190 @@
#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
#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 devtype 0x76 // 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
#define devtype 0x76 // 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

54
lowlevel.c
View File

@ -1,27 +1,27 @@
//
// 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;
}
//
// 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;
}

36
lowlevel.h
View File

@ -1,18 +1,18 @@
#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
#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

186
main.c
View File

@ -2,14 +2,14 @@
*
* AVRPROG compatible boot-loader
* Version : 0.75 (Feb. 2006)
* Compiler : avr-gcc 3.4.1 / avr-libc 1.0.2
* Compiler : avr-gcc 3.4.1 / avr-libc 1.0.2
* size : depends on features and startup ( minmal features < 512 words)
* by : Martin Thomas, Kaiserslautern, Germany
* eversmith@heizung-thomas.de
*
* License : Copyright (c) 2005 Martin Thomas
* Free to use. You have to mention the copyright
* owners in source-code and documentation of derived
* Free to use. You have to mention the copyright
* owners in source-code and documentation of derived
* work. No warranty.
*
* Additional code and improvements contributed by:
@ -22,11 +22,11 @@
* - 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 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
* "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
@ -36,19 +36,19 @@
* 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
* 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 for information how to adopt the linker-settings to
* 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
* Set AVR clock-frequency and the baudrate below, set MCU-type in
* makefile.
*
****************************************************************************/
@ -87,11 +87,11 @@
// UART handling - some definitions from P. Fleury's Library - thanks
#include "uart.h"
/* 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 */
#define ENABLEREADFUSELOCK
#define ENABLEREADFUSELOCK
/* enable/disable write of lock-bits
/* 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
@ -131,33 +131,33 @@ int main(void)
{
unsigned tempi;
char val;
#ifdef START_POWERSAVE
char OK = 1;
char OK = 1;
#endif
cli();
MCUCR = (1<<IVCE); // move interruptvectors to the Boot sector
MCUCR = (1<<IVCE); // move interruptvectors to the Boot sector
MCUCR = (1<<IVSEL); // device specific !
BLDDR &= ~(1<<BLPNUM); // set as Input
BLPORT |= (1<<BLPNUM); // Enable pullup
USART_Init(UART_BAUD_SELECT(BAUDRATE,XTAL),UARTSINGLE); // single speed
// USART_Init(UART_BAUD_SELECT(BAUDRATE/2,XTAL),UARTDOUBLE); // double speed
#ifdef 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)))
{
if((BLPIN & (1<<BLPNUM)))
{
// jump to main app if pin is not grounded
BLPORT &= ~(1<<BLPNUM); // set to default
MCUCR = (1<<IVCE); // move interruptvectors to the Application sector
@ -165,12 +165,12 @@ int main(void)
jump_to_app(); // Jump to application sector
}
else
{
{
val = recchar();
if( val == 0x1B ) /* ESC */
{ // AVRPROG connection
while (val != 'S') // Wait for signon
while (val != 'S') // Wait for signon
{
val = recchar();
}
@ -182,26 +182,26 @@ int main(void)
}
// 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 = (1<<IVCE);
MCUCR = (0<<IVSEL); //move interruptvectors to the Application sector
jump_to_app(); // Jump to application sector
}
#elif defined(START_WAIT)
// Timer-Setup for ATmega8
// Timer-Setup for ATmega8
// - verify that the configuration is valid for the target AVR
#define F_OSC XTAL
#define UART0_STATUS UCSRA
#define UART0_STATUS UCSRA
#define UART0_DATA UDR
#define MY_WAIT 900
// wait ca 1 sec (900ms)
@ -210,21 +210,21 @@ int main(void)
#if (((F_OSC / 8 / 1000)*MY_WAIT) < 65535)
#warning Information: setting prescaler to 8
#define WAIT_VALUE ((F_OSC / 8 / 1000)*MY_WAIT)
TCCR1B |= _BV(CS01);
TCCR1B |= _BV(CS01);
#elif ((((F_OSC / 64 / 1000)*MY_WAIT) < 65535))
#warning Information: setting prescaler to 64
#define WAIT_VALUE ((F_OSC / 64 / 1000)*MY_WAIT)
TCCR1B |= _BV(CS01)| _BV(CS00);
TCCR1B |= _BV(CS01)| _BV(CS00);
#elif ((((F_OSC / 256 / 1000)*MY_WAIT) < 65535))
#warning Information: setting prescaler to 256
#define WAIT_VALUE ((F_OSC / 256 / 1000)*MY_WAIT)
TCCR1B |= _BV(CS02);
TCCR1B |= _BV(CS02);
#else //((((F_OSC / 1024 / 1000)*MY_WAIT) < 65535))
#warning Information: setting prescaler to 1024
#define WAIT_VALUE ((F_OSC / 1024 / 1000)*MY_WAIT)
TCCR1B |= _BV(CS00) |_BV(CS02); //1024 prescaler
#endif
while(1){
if(UART0_STATUS & (1<<RXC)){
if (UART0_DATA == 'S')
@ -232,7 +232,7 @@ int main(void)
}
if (TCNT1 >= WAIT_VALUE){
BLPORT &= ~(1<<BLPNUM); // set to default
MCUCR = (1<<IVCE);
MCUCR = (1<<IVCE);
MCUCR = (0<<IVSEL); //move interruptvectors to the Application sector
TCCR1B = 0; // timer off
jump_to_app(); // Jump to application sector
@ -240,7 +240,7 @@ int main(void)
}
TCCR1B = 0; // timer off
send_boot();
#elif defined(START_BOOTICE)
#warning "BOOTICE mode - no startup-condition"
@ -248,24 +248,24 @@ int main(void)
#error "Select START_ condition for bootloader in main.c"
#endif
for(;;)
{
for(;;)
{
val=recchar();
if(val=='a') //Autoincrement?
{
sendchar('Y'); //Autoincrement is quicker
}
else if(val=='A') //write address
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
sendchar('\r');
}
else if(val=='b')
{ // Buffer load support
sendchar('Y'); // Report buffer load supported
@ -282,21 +282,21 @@ int main(void)
sendchar (BufferLoad(tempi,val));
// Start downloading of buffer
}
else if(val == 'g') // Block read
{
tempi = (recchar() << 8) | recchar();
val = recchar(); // Get memtype
BlockRead(tempi,val); // Perform the block read
}
}
else if(val=='e') //Chip erase
else if(val=='e') //Chip erase
{
if (device == devtype)
{
// erase only main section (bootloader protection)
address = 0;
address = 0;
while ( APP_END > address )
{
boot_page_erase(address); // Perform page erase
@ -305,7 +305,7 @@ int main(void)
}
}
boot_rww_enable();
sendchar('\r');
sendchar('\r');
}
else if(val=='E') //Exit upgrade
@ -313,11 +313,11 @@ int main(void)
wdt_enable(WDTO_15MS); // Enable Watchdog Timer to give reset
sendchar('\r');
}
#ifdef WRITELOCKBITS
#warning "Extension 'WriteLockBits' enabled"
// TODO: does not work reliably
else if(val=='l') // write lockbits
else if(val=='l') // write lockbits
{
if (device == devtype)
{
@ -328,22 +328,22 @@ int main(void)
sendchar('\r');
}
#endif
else if(val=='P') // Enter programming mode
else if(val=='P') // Enter programming mode
{
sendchar('\r');
}
else if(val=='L') // Leave programming mode
{
{
sendchar('\r');
}
else if (val=='p') // return programmer type
{
sendchar('S'); // always serial programmer
}
}
#ifdef ENABLEREADFUSELOCK
#warning "Extension 'ReadFuseLock' enabled"
else if(val=='F') // read "low" fuse bits
@ -352,23 +352,23 @@ int main(void)
}
else if(val=='r') // read lock bits
{
{
sendchar( read_fuse_lock(0x0001, _BV(BLBSET)|_BV(SPMEN)) );
}
}
else if(val=='N') // read high fuse bits
{
sendchar( read_fuse_lock(0x0003,_BV(BLBSET)|_BV(SPMEN)) );
}
}
else if(val=='Q') // read extended fuse bits
{
sendchar( read_fuse_lock(0x0002,_BV(BLBSET)|_BV(SPMEN)) );
}
#endif
#endif
// end of ENABLEREADFUSELOCK section
else if(val=='t') // Return device type
else if(val=='t') // Return device type
{
sendchar(devtype);
sendchar(0);
@ -379,37 +379,37 @@ int main(void)
recchar();
sendchar('\r');
}
else if (val=='T') // set device
{
device = recchar();
sendchar('\r');
}
else if (val=='S') // Return software identifier
else if (val=='S') // Return software identifier
{
send_boot();
}
}
else if (val=='V') // Return Software Version
{
sendchar(VERSION_HIGH);
sendchar(VERSION_LOW);
}
}
else if (val=='s') // Return Signature Byte
{
sendchar(sig_byte1);
sendchar(sig_byte2);
sendchar(sig_byte3);
}
}
else if(val != 0x1b) /* ESC */
{
sendchar('?');
}
} // end of "parser" for-loop
return 0;
}
@ -418,7 +418,7 @@ 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;
@ -426,9 +426,9 @@ unsigned char BufferLoad(unsigned int size, unsigned char mem)
cnt=0;
tempaddress = address; // Store address in page
my_eeprom_busy_wait();
if (device == devtype)
{
if (mem == 'F') // Flash
@ -437,29 +437,29 @@ unsigned char BufferLoad(unsigned int size, unsigned char mem)
data=gBuffer[cnt++];
data|=(gBuffer[cnt++]<<8);
boot_page_fill(address,data);
//call asm routine.
//call asm routine.
address=address+2; // Select next word in memory
size -= 2; // Reduce number of bytes to write by two
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
/* 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_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;
@ -468,10 +468,10 @@ unsigned char BufferLoad(unsigned int size, unsigned char mem)
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
@ -481,16 +481,16 @@ unsigned char BufferLoad(unsigned int size, unsigned char mem)
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
@ -512,7 +512,7 @@ void BlockRead(unsigned int size, unsigned char mem)
data = pgm_read_word_near((uint16_t)address);
#endif
sendchar((unsigned char)data); //send LSB
sendchar((unsigned char)(data >> 8)); //send MSB
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

62
makefile
View File

@ -44,7 +44,7 @@ XTAL=16000000
#BAUDRATE=115200
BAUDRATE=9600UL
#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
BLPORT = PORTB
BLDDR = DDRB
@ -52,8 +52,8 @@ 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
# * 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
@ -61,7 +61,7 @@ BLPNUM = PINB0
# 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
# parser-loop on reset
# XTAL in BOOTICEMODE must be 7372800 Hz to be compatible
# with the org. JTAGICE-Firmware */
# * WAIT-mode waits 1 sec for the S command if nothing is recived
@ -74,43 +74,43 @@ STARTMODE=START_WAIT
#/* Select Boot Size in Words (select one, comment out the others) */
## NO! BOOTSIZE=_B128
## NO! BOOTSIZE=_B256
## MAYBE: BOOTSIZE=_B512
#BOOTSIZE=_B512
BOOTSIZE=_B1024
## NO! BOOTSIZE=_B256
## MAYBE: BOOTSIZE=_B512
#BOOTSIZE=_B512
BOOTSIZE=_B1024
##BOOTSIZE=_B2048
################## 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.
# 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 ($(MCU), atmega16)
MT_BOOTLOADER_ADDRESS = 3800
MT_BOOTLOADER_ADDRESS = 3800
endif
# 0x0C00*2=0x1800 for ATmega8 1024 words Boot Size
ifeq ($(MCU), atmega8)
MT_BOOTLOADER_ADDRESS = 1800
MT_BOOTLOADER_ADDRESS = 1800
endif
# 0x3C00*2=0x7800 for ATmega32 1024 words Boot Size
ifeq ($(MCU), atmega32)
MT_BOOTLOADER_ADDRESS = 7800
MT_BOOTLOADER_ADDRESS = 7800
endif
# 0xFC00*2=0x1F800 for ATmega128 1024 words Boot Size
ifeq ($(MCU), atmega128)
MT_BOOTLOADER_ADDRESS = 1F800
MT_BOOTLOADER_ADDRESS = 1F800
endif
# 0xFC00*2=0x1F800 for AT90Can128 1024 words Boot Size
ifeq ($(MCU), at90can128)
MT_BOOTLOADER_ADDRESS = 1f800
MT_BOOTLOADER_ADDRESS = 1f800
endif
@ -133,11 +133,11 @@ 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
@ -149,7 +149,7 @@ 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.
@ -194,7 +194,7 @@ 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=$(<:.S=.lst),-gstabs
@ -206,7 +206,7 @@ PRINTF_LIB_MIN = -Wl,-u,vfprintf -lprintf_min
# Floating point printf version (requires MATH_LIB = -lm below)
PRINTF_LIB_FLOAT = -Wl,-u,vfprintf -lprintf_flt
PRINTF_LIB =
PRINTF_LIB =
# Minimalistic scanf version
SCANF_LIB_MIN = -Wl,-u,vfscanf -lscanf_min
@ -214,7 +214,7 @@ SCANF_LIB_MIN = -Wl,-u,vfscanf -lscanf_min
# Floating point + %[ scanf version (requires MATH_LIB = -lm below)
SCANF_LIB_FLOAT = -Wl,-u,vfscanf -lscanf_flt
SCANF_LIB =
SCANF_LIB =
MATH_LIB = -lm
@ -247,7 +247,7 @@ LDFLAGS += -Wl,--section-start=.text=$(MT_BOOTLOADER_ADDRESS)
# 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 ?
@ -273,7 +273,7 @@ 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
@ -296,7 +296,7 @@ AVRDUDE_FLAGS += $(AVRDUDE_ERASE_COUNTER)
# Define programs and commands.
#SHELL = $(DIRAVRUTILS)/sh
#NM = $(DIRAVRBIN)/avr-nm
#NM = $(DIRAVRBIN)/avr-nm
#CC = $(DIRAVRBIN)/avr-gcc
#OBJCOPY = $(DIRAVRBIN)/avr-objcopy
#OBJDUMP= $(DIRAVRBIN)/avr-objdump
@ -323,7 +323,7 @@ WINSHELL = cmd
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:
@ -340,7 +340,7 @@ 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)
@ -367,7 +367,7 @@ build: elf hex eep lss sym
elf: $(TARGET).elf
hex: $(TARGET).hex
eep: $(TARGET).eep
lss: $(TARGET).lss
lss: $(TARGET).lss
sym: $(TARGET).sym
@ -399,12 +399,12 @@ sizeafter:
# Display compiler version information.
gccversion :
gccversion :
@$(CC) --version
# Program the device.
# Program the device.
program: $(TARGET).hex $(TARGET).eep
$(AVRDUDE) $(AVRDUDE_FLAGS) $(AVRDUDE_WRITE_FLASH) $(AVRDUDE_WRITE_EEPROM)
@ -416,7 +416,7 @@ COFFCONVERT=$(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
@ -471,7 +471,7 @@ 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.

358
readme.txt
View File

@ -1,179 +1,179 @@
======================================================
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
eversmith@heizung-thomas.de
http://www.siwawi.arubi.uni-kl.de/avr_projects
Addtional code and improvements provided by
Uwe Bonnes and Bjoern Riemer.
======================================================
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"
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
* Makefile modifications contributed by Uwe Bonnes
23. Feb. 2005 - Version 0.7
* (Version 0.6 has never been available on the web-page)
* ATmega128 support
* code cleanup
* 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
(ATmega16 options still available)
* fixed jump to application which did not work
reliably before
* tested with ATmega8
* 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
operation. So EEPROM-upload does work now.
* Added BOOTICE-mode to flash JTAGICE-compatible
hardware (ATmega16@7,3Mhz) (if you know about BOOTICE,
you may unterstand why this has been added, if not
just keep the option disabled)
* small changes in (my)boot.h (lock-bit-mask) found
out during the development of the STK-500-compatible
bootloader. But setting lock-bits still does not
work with this bootloader.
* read of the low-fuse byte works (high byte still TODO)
* read of the lock-byte works (write still TODO)
27. Mar 2004 - Version 0.3
Felt that as much functions from avr-libc's boot.h
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.
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
more.
24. Mar 2004 - Version 0.2
During the development of a data-logger application
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
bootloader source code Rev 0.2 for IAR.
The bootloader-port for the Butterfly which mimics
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"
assembly to access the low-level functions
for flash read/write. Well, so far I
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
been developed based on the ATMEL assembler code.
Ignore the fuse and lock-bit readout. Read and Set is
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 boot(loader)-size in Makefile, this
bootloader is larger than 512 words (1024 bytes),
so select at least _B1024!
- 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.
- Change the start-condition in Makefile. Default
is: enter bootloader if Pin A7 is connected to
GND during reset/startup
- 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.
- upload the hex-File to the AVR (STK500, STK200, SP12
etc.)
- 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
- enable the BOOT Reset Vector (BOOTTRST=0)
- Set the lock bits to protect the bootloader from
SPM-writes (Boot Loader Protection Mode 2 in STK500-
plugin)
- Connect the AVR UART Pins via level-shifter/inverter
(i.e. MAX232) to you 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!
- Start AVRPROG (AVRStuido/Tools or stand-alone) -
keep PA7 grounded! (avrdude is supported too, check
the avrdude manual for command-line options).
- AVRPROG will detect the bootloader, you may release
PA7 now
- see AVRStuido 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)
good luck, feedback welcome.
Martin
======================================================
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
eversmith@heizung-thomas.de
http://www.siwawi.arubi.uni-kl.de/avr_projects
Addtional code and improvements provided by
Uwe Bonnes and Bjoern Riemer.
======================================================
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"
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
* Makefile modifications contributed by Uwe Bonnes
23. Feb. 2005 - Version 0.7
* (Version 0.6 has never been available on the web-page)
* ATmega128 support
* code cleanup
* 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
(ATmega16 options still available)
* fixed jump to application which did not work
reliably before
* tested with ATmega8
* 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
operation. So EEPROM-upload does work now.
* Added BOOTICE-mode to flash JTAGICE-compatible
hardware (ATmega16@7,3Mhz) (if you know about BOOTICE,
you may unterstand why this has been added, if not
just keep the option disabled)
* small changes in (my)boot.h (lock-bit-mask) found
out during the development of the STK-500-compatible
bootloader. But setting lock-bits still does not
work with this bootloader.
* read of the low-fuse byte works (high byte still TODO)
* read of the lock-byte works (write still TODO)
27. Mar 2004 - Version 0.3
Felt that as much functions from avr-libc's boot.h
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.
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
more.
24. Mar 2004 - Version 0.2
During the development of a data-logger application
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
bootloader source code Rev 0.2 for IAR.
The bootloader-port for the Butterfly which mimics
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"
assembly to access the low-level functions
for flash read/write. Well, so far I
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
been developed based on the ATMEL assembler code.
Ignore the fuse and lock-bit readout. Read and Set is
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 boot(loader)-size in Makefile, this
bootloader is larger than 512 words (1024 bytes),
so select at least _B1024!
- 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.
- Change the start-condition in Makefile. Default
is: enter bootloader if Pin A7 is connected to
GND during reset/startup
- 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.
- upload the hex-File to the AVR (STK500, STK200, SP12
etc.)
- 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
- enable the BOOT Reset Vector (BOOTTRST=0)
- Set the lock bits to protect the bootloader from
SPM-writes (Boot Loader Protection Mode 2 in STK500-
plugin)
- Connect the AVR UART Pins via level-shifter/inverter
(i.e. MAX232) to you 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!
- Start AVRPROG (AVRStuido/Tools or stand-alone) -
keep PA7 grounded! (avrdude is supported too, check
the avrdude manual for command-line options).
- AVRPROG will detect the bootloader, you may release
PA7 now
- see AVRStuido 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)
good luck, feedback welcome.
Martin

302
uart.c
View File

@ -1,151 +1,151 @@
#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 ;
}
#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 ;
}

26
uart.h
View File

@ -1,13 +1,13 @@
#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
#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