update doc

- move remaining defines into main.c
This commit is contained in:
Olaf Rempel 2006-05-20 00:30:03 +02:00
parent b253baf838
commit 70d5a20eb3
2 changed files with 63 additions and 65 deletions

89
main.c
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@ -1,8 +1,8 @@
/*****************************************************************************
*
* AVRPROG compatible boot-loader
* Version : 0.75 (Feb. 2006)
* Compiler : avr-gcc 3.4.1 / avr-libc 1.0.2
* Version : 0.80 (May 2006)
* Compiler : avr-gcc 3.4.6 / avr-libc 1.4.4
* size : depends on features and startup ( minmal features < 512 words)
* by : Martin Thomas, Kaiserslautern, Germany
* eversmith@heizung-thomas.de
@ -15,6 +15,7 @@
* Additional code and improvements contributed by:
* - Uwe Bonnes
* - Bjoern Riemer
* - Olaf Rempel
*
*
* Tested with ATmega8, ATmega16, ATmega32, ATmega128, AT90CAN128
@ -33,23 +34,18 @@
*
****************************************************************************
*
* 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 for information how to adopt the linker-settings to
* the selected Boot Size (_Bxxx below)
* the selected Boot Size (BOOTSIZE=xxxx), the AVR clock-frequency and the
* MCU-type in
*
* 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 this bootloader has
* 0x2EA - atmega8
* 0x368 - atmega16
* 0x382 - atmega169
* 0x368 - atmega32
* 0x360 - atmega128
* 0x372 - at90can128
* bytes size and should fit into a 512word bootloader-section.
*
****************************************************************************/
/*
@ -73,25 +69,58 @@
/* use second UART on mega128 / can128 */
//#define UART_USE_SECOND
/*
* Pin "STARTPIN" on port "STARTPORT" in this port has to grounded
* (active low) to start the bootloader
*/
#define BLPORT PORTB
#define BLDDR DDRB
#define BLPIN PINB
#define 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
* F_CPU 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
* then the user prog is started ..
*/
#define START_SIMPLE
//#define START_WAIT
//#define START_POWERSAVE
//#define START_BOOTICE
/*
* 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 <stdint.h>
#include <avr/io.h>
#include <avr/wdt.h>
#include <avr/boot.h>
#include <avr/pgmspace.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 "chipdef.h"
uint8_t gBuffer[SPM_PAGESIZE];

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@ -39,40 +39,12 @@ MCU = atmega8
## MCU = atmega32
## MCU = at90can128
#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
# F_CPU 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
# then the user prog is started ..
#STARTMODE=START_SIMPLE
STARTMODE=START_WAIT
##STARTMODE=START_POWERSAVE
##STARTMODE=START_BOOTICE
#/* Select Boot Size in Words (select one, comment out the others) */
## NO! BOOTSIZE=128
## NO! BOOTSIZE=256
## MAYBE: BOOTSIZE=512
#BOOTSIZE=512
BOOTSIZE=1024
BOOTSIZE=512
#BOOTSIZE=1024
##BOOTSIZE=2048
@ -220,11 +192,8 @@ EXTRAINCDIRS =
CSTANDARD = -std=gnu99
# Place -D or -U options here
CDEFS = -DBLPORT=$(BLPORT) -DBLDDR=$(BLDDR) -DBLPIN=$(BLPIN) -DBLPNUM=$(BLPNUM)
CDEFS += -D$(STARTMODE) -DBOOTSIZE=$(BOOTSIZE)
ifdef XTAL
CDEFS += -DXTAL=$(XTAL)
endif
CDEFS = -DBOOTSIZE=$(BOOTSIZE)
# Place -I options here
CINCS =