update doc
- move remaining defines into main.c
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main.c
89
main.c
@ -1,8 +1,8 @@
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/*****************************************************************************
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*
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* AVRPROG compatible boot-loader
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* Version : 0.75 (Feb. 2006)
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* Compiler : avr-gcc 3.4.1 / avr-libc 1.0.2
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* Version : 0.80 (May 2006)
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* Compiler : avr-gcc 3.4.6 / avr-libc 1.4.4
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* size : depends on features and startup ( minmal features < 512 words)
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* by : Martin Thomas, Kaiserslautern, Germany
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* eversmith@heizung-thomas.de
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@ -15,6 +15,7 @@
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* Additional code and improvements contributed by:
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* - Uwe Bonnes
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* - Bjoern Riemer
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* - Olaf Rempel
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*
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*
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* Tested with ATmega8, ATmega16, ATmega32, ATmega128, AT90CAN128
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@ -33,23 +34,18 @@
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*
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****************************************************************************
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*
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* The boot interrupt vector is included (this bootloader is completly in
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* ".text" section). If you need this space for further functions you have to
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* add a separate section for the bootloader-functions and add an attribute
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* for this section to _all_ function prototypes of functions in the loader.
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* With this the interrupt vector will be placed at .0000 and the bootloader
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* code (without interrupt vector) at the adress you define in the linker
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* options for the newly created section. See the avr-libc FAQ, the avr-
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* libc's avr/boot.h documentation and the makefile for further details.
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*
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* See the makefile for information how to adopt the linker-settings to
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* the selected Boot Size (_Bxxx below)
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* the selected Boot Size (BOOTSIZE=xxxx), the AVR clock-frequency and the
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* MCU-type in
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*
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* With BOOT_SIMPLE this bootloader has 0x3DE bytes size and should fit
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* into a 512word bootloader-section.
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*
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* Set AVR clock-frequency and the baudrate below, set MCU-type in
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* makefile.
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* With BOOT_SIMPLE this bootloader has
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* 0x2EA - atmega8
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* 0x368 - atmega16
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* 0x382 - atmega169
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* 0x368 - atmega32
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* 0x360 - atmega128
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* 0x372 - at90can128
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* bytes size and should fit into a 512word bootloader-section.
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*
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****************************************************************************/
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/*
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@ -73,25 +69,58 @@
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/* use second UART on mega128 / can128 */
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//#define UART_USE_SECOND
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/*
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* Pin "STARTPIN" on port "STARTPORT" in this port has to grounded
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* (active low) to start the bootloader
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*/
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#define BLPORT PORTB
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#define BLDDR DDRB
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#define BLPIN PINB
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#define BLPNUM PINB0
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/*
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* Select startup-mode
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* SIMPLE-Mode - Jump to bootloader main BL-loop if key is
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* pressed (Pin grounded) "during" reset or jump to the
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* application if the pin is not grounded (=pulled up by
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* internal pull-up-resistor)
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* POWERSAVE-Mode - Startup is separated in two loops
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* which makes power-saving a little easier if no firmware
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* is on the chip. Needs more memory
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* BOOTICE-Mode - to flash the JTAGICE upgrade.ebn file.
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* No startup-sequence in this mode. Jump directly to the
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* parser-loop on reset
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* F_CPU in BOOTICEMODE must be 7372800 Hz to be compatible
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* with the org. JTAGICE-Firmware
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* WAIT-mode waits 1 sec for the S command if nothing is recived
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* then the user prog is started ..
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*/
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#define START_SIMPLE
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//#define START_WAIT
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//#define START_POWERSAVE
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//#define START_BOOTICE
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/*
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* enable/disable readout of fuse and lock-bits
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* (will not work for Mega169 since not supported by AVRPROG 1.37
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*/
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//#define ENABLEREADFUSELOCK
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/* enable/disable write of lock-bits
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* WARNING: lock-bits can not be reseted by bootloader (as far as I know)
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* Only protection no unprotection, "chip erase" from bootloader only
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* clears the flash but does no real "chip erase" (this is not possible
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* with a bootloader as far as I know)
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* Keep this undefined!
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*/
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//#define WRITELOCKBITS
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#include <stdint.h>
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#include <avr/io.h>
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#include <avr/wdt.h>
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#include <avr/boot.h>
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#include <avr/pgmspace.h>
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/* enable/disable readout of fuse and lock-bits
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(will not work for Mega169 since not supported by AVRPROG 1.37 */
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#define ENABLEREADFUSELOCK
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/* enable/disable write of lock-bits
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WARNING: lock-bits can not be reseted by bootloader (as far as I know)
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Only protection no unprotection, "chip erase" from bootloader only
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clears the flash but does no real "chip erase" (this is not possible
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with a bootloader as far as I know)
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Keep this undefined!
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*/
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// #define WRITELOCKBITS
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#include "chipdef.h"
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uint8_t gBuffer[SPM_PAGESIZE];
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39
makefile
39
makefile
@ -39,40 +39,12 @@ MCU = atmega8
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## MCU = atmega32
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## MCU = at90can128
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#Pin "STARTPIN" on port "STARTPORT" in this port has to grounded
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# (active low) to start the bootloader
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BLPORT = PORTB
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BLDDR = DDRB
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BLPIN = PINB
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BLPNUM = PINB0
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# Select startup-mode
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# * SIMPLE-Mode - Jump to bootloader main BL-loop if key is
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# pressed (Pin grounded) "during" reset or jump to the
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# application if the pin is not grounded (=pulled up by
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# internal pull-up-resistor)
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# * POWERSAVE-Mode - Startup is separated in two loops
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# which makes power-saving a little easier if no firmware
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# is on the chip. Needs more memory
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# * BOOTICE-Mode - to flash the JTAGICE upgrade.ebn file.
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# No startup-sequence in this mode. Jump directly to the
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# parser-loop on reset
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# F_CPU in BOOTICEMODE must be 7372800 Hz to be compatible
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# with the org. JTAGICE-Firmware */
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# * WAIT-mode waits 1 sec for the S command if nothing is recived
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# then the user prog is started ..
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#STARTMODE=START_SIMPLE
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STARTMODE=START_WAIT
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##STARTMODE=START_POWERSAVE
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##STARTMODE=START_BOOTICE
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#/* Select Boot Size in Words (select one, comment out the others) */
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## NO! BOOTSIZE=128
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## NO! BOOTSIZE=256
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## MAYBE: BOOTSIZE=512
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#BOOTSIZE=512
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BOOTSIZE=1024
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BOOTSIZE=512
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#BOOTSIZE=1024
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##BOOTSIZE=2048
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@ -220,11 +192,8 @@ EXTRAINCDIRS =
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CSTANDARD = -std=gnu99
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# Place -D or -U options here
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CDEFS = -DBLPORT=$(BLPORT) -DBLDDR=$(BLDDR) -DBLPIN=$(BLPIN) -DBLPNUM=$(BLPNUM)
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CDEFS += -D$(STARTMODE) -DBOOTSIZE=$(BOOTSIZE)
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ifdef XTAL
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CDEFS += -DXTAL=$(XTAL)
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endif
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CDEFS = -DBOOTSIZE=$(BOOTSIZE)
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# Place -I options here
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CINCS =
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