Version 0.75
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@ -72,7 +72,8 @@
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#define sig_byte2 0x93
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#define sig_byte1 0x07
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#define devtype 0x77 // Mega8 boot device code
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//#define devtype 0x77 // Mega8 boot device code
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#define devtype 0x76 // Mega8 boot device code
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// #define PAGESIZE 64 // Size in Bytes
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65
main.c
65
main.c
@ -1,7 +1,7 @@
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/*****************************************************************************
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*
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* AVRPROG compatible boot-loader
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* Version : 0.7 (Feb. 2005)
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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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* size : depends on features and startup ( minmal features < 512 words)
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* by : Martin Thomas, Kaiserslautern, Germany
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@ -12,7 +12,12 @@
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* owners in source-code and documentation of derived
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* work. No warranty.
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*
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* Tested with ATmega8, ATmega16, ATmega32, ATmega128
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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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*
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*
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* Tested with ATmega8, ATmega16, ATmega32, ATmega128, AT90CAN128
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*
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* - based on the Butterfly Bootloader-Code
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* Copyright (C) 1996-1998 Atmel Corporation
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@ -133,8 +138,8 @@ int main(void)
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cli();
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MCUCR = (1<<IVCE);
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MCUCR = (1<<IVSEL); //move interruptvectors to the Boot sector
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MCUCR = (1<<IVCE); // move interruptvectors to the Boot sector
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MCUCR = (1<<IVSEL); // device specific !
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BLDDR &= ~(1<<BLPNUM); // set as Input
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BLPORT |= (1<<BLPNUM); // Enable pullup
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@ -155,8 +160,8 @@ int main(void)
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{
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// jump to main app if pin is not grounded
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BLPORT &= ~(1<<BLPNUM); // set to default
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MCUCR = (1<<IVCE);
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MCUCR = (0<<IVSEL); // move interruptvectors to the Application sector
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MCUCR = (1<<IVCE); // move interruptvectors to the Application sector
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MCUCR = (0<<IVSEL); // device specific !
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jump_to_app(); // Jump to application sector
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}
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else
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@ -179,6 +184,7 @@ int main(void)
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}
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#elif defined(START_SIMPLE)
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if((BLPIN & (1<<BLPNUM)))
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{
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// jump to main app if pin is not grounded
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@ -188,6 +194,53 @@ int main(void)
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jump_to_app(); // Jump to application sector
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}
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#elif defined(START_WAIT)
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// Timer-Setup for ATmega8
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// - verify that the configuration is valid for the target AVR
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#define F_OSC XTAL
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#define UART0_STATUS UCSRA
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#define UART0_DATA UDR
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#define MY_WAIT 900
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// wait ca 1 sec (900ms)
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TCCR1A = 0; // timer setup
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// F_OSC / 8 / 1000 -> 1ms
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#if (((F_OSC / 8 / 1000)*MY_WAIT) < 65535)
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#warning Information: setting prescaler to 8
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#define WAIT_VALUE ((F_OSC / 8 / 1000)*MY_WAIT)
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TCCR1B |= _BV(CS01);
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#elif ((((F_OSC / 64 / 1000)*MY_WAIT) < 65535))
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#warning Information: setting prescaler to 64
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#define WAIT_VALUE ((F_OSC / 64 / 1000)*MY_WAIT)
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TCCR1B |= _BV(CS01)| _BV(CS00);
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#elif ((((F_OSC / 256 / 1000)*MY_WAIT) < 65535))
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#warning Information: setting prescaler to 256
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#define WAIT_VALUE ((F_OSC / 256 / 1000)*MY_WAIT)
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TCCR1B |= _BV(CS02);
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#else //((((F_OSC / 1024 / 1000)*MY_WAIT) < 65535))
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#warning Information: setting prescaler to 1024
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#define WAIT_VALUE ((F_OSC / 1024 / 1000)*MY_WAIT)
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TCCR1B |= _BV(CS00) |_BV(CS02); //1024 prescaler
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#endif
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while(1){
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if(UART0_STATUS & (1<<RXC)){
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if (UART0_DATA == 'S')
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break;
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}
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if (TCNT1 >= WAIT_VALUE){
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BLPORT &= ~(1<<BLPNUM); // set to default
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MCUCR = (1<<IVCE);
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MCUCR = (0<<IVSEL); //move interruptvectors to the Application sector
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TCCR1B = 0; // timer off
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jump_to_app(); // Jump to application sector
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}
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}
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TCCR1B = 0; // timer off
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send_boot();
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#elif defined(START_BOOTICE)
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#warning "BOOTICE mode - no startup-condition"
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55
makefile
55
makefile
@ -35,13 +35,14 @@
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# MCU name
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## MCU = atmega16
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## MCU = atmega8
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MCU = atmega8
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## MCU = atmega32
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MCU = at90can128
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## MCU = at90can128
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XTAL=16000000
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BAUDRATE=115200
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#XTAL=2000000UL
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#BAUDRATE=115200
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BAUDRATE=9600UL
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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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@ -63,7 +64,11 @@ BLPNUM = PINB0
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# parser-loop on reset
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# XTAL in BOOTICEMODE must be 7372800 Hz to be compatible
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# with the org. JTAGICE-Firmware */
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STARTMODE=START_SIMPLE
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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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@ -71,6 +76,7 @@ STARTMODE=START_SIMPLE
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## NO! BOOTSIZE=_B128
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## NO! BOOTSIZE=_B256
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## MAYBE: BOOTSIZE=_B512
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#BOOTSIZE=_B512
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BOOTSIZE=_B1024
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##BOOTSIZE=_B2048
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@ -109,7 +115,8 @@ endif
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# Output format. (can be srec, ihex, binary)
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FORMAT = srec
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FORMAT = ihex
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#FORMAT = srec
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# Target file name (without extension).
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TARGET = main
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@ -250,7 +257,7 @@ AVRDUDE_PROGRAMMER = stk500v2
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# com1 = serial port. Use lpt1 to connect to parallel port.
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#AVRDUDE_PORT = com1 # programmer connected to serial device
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AVRDUDE_PORT = /dev/ttyS1 # programmer connected to serial device
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AVRDUDE_PORT = /dev/ttyS0 # programmer connected to serial device
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AVRDUDE_WRITE_FLASH = -U flash:w:$(TARGET).hex
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#AVRDUDE_WRITE_EEPROM = -U eeprom:w:$(TARGET).eep
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@ -280,25 +287,35 @@ AVRDUDE_FLAGS += $(AVRDUDE_ERASE_COUNTER)
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# ---------------------------------------------------------------------------
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# Define directories, if needed.
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DIRAVR = c:/winavr
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DIRAVRBIN = $(DIRAVR)/bin
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DIRAVRUTILS = $(DIRAVR)/utils/bin
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DIRINC = .
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DIRLIB = $(DIRAVR)/avr/lib
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#DIRAVR = c:/winavr
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#DIRAVRBIN = $(DIRAVR)/bin
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#DIRAVRUTILS = $(DIRAVR)/utils/bin
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#DIRINC = .
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#DIRLIB = $(DIRAVR)/avr/lib
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# Define programs and commands.
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#SHELL = $(DIRAVRUTILS)/sh
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#NM = $(DIRAVRBIN)/avr-nm
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#CC = $(DIRAVRBIN)/avr-gcc
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#OBJCOPY = $(DIRAVRBIN)/avr-objcopy
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#OBJDUMP= $(DIRAVRBIN)/avr-objdump
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#SIZE = $(DIRAVRBIN)/avr-size
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#AVRDUDE = $(DIRAVRBIN)/avrdude.sh
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#REMOVE = rm -f
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#COPY = cp
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# Define programs and commands.
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SHELL = sh
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CC = env WINEDLLOVERRIDES=msvcrt=n /spare/bon/wine/wine/wine c:/WinAVR/bin/avr-gcc
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OBJCOPY = env WINEDLLOVERRIDES=msvcrt=n /spare/bon/wine/wine/wine c:/WinAVR/bin/avr-objcopy
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OBJDUMP = env WINEDLLOVERRIDES=msvcrt=n /spare/bon/wine/wine/wine c:/WinAVR/bin/avr-objdump
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SIZE = env WINEDLLOVERRIDES=msvcrt=n /spare/bon/wine/wine/wine c:/WinAVR/bin/avr-size
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NM = env WINEDLLOVERRIDES=msvcrt=n /spare/bon/wine/wine/wine c:/WinAVR/bin/avr-nm
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CC = avr-gcc
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OBJCOPY = avr-objcopy
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OBJDUMP = avr-objdump
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SIZE = avr-size
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NM = avr-nm
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AVRDUDE = avrdude
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REMOVE = rm -f
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COPY = cp
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WINSHELL = cmd
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# Define Messages
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22
readme.txt
22
readme.txt
@ -10,9 +10,28 @@
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http://www.siwawi.arubi.uni-kl.de/avr_projects
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Addtional code and improvements provided by
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Uwe Bonnes and Bjoern Riemer.
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======================================================
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Programming-Software (on the "PC-Side"):
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* AVRProg (included in AVRStudio) available at www.atmel.com.
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MS-Windows only. AVRProg can be used as stand-alone application.
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(avrprog.exe)
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* avrdude available at http://savannah.nongnu.org/projects/avrdude/
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"Multiplattform"
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09. Feb. 2006 - Version 0.75
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* additional STARTUP_WAIT support contributed by Bjoern Riemer
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18. Aug. 2005 - Version 0.74
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* AT90CAN128 support contributed by Uwe Bonnes
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@ -144,7 +163,8 @@ not enabled (TODO).
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or hold the key down until you see the AVRPROG dialog!
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- Start AVRPROG (AVRStuido/Tools or stand-alone) -
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keep PA7 grounded!
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keep PA7 grounded! (avrdude is supported too, check
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the avrdude manual for command-line options).
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- AVRPROG will detect the bootloader, you may release
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PA7 now
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