diff options
Diffstat (limited to 'ArduinoAddons/Arduino_1.0.x/hardware/Sanguino/bootloaders/atmega644p/ATmegaBOOT.c')
| -rwxr-xr-x | ArduinoAddons/Arduino_1.0.x/hardware/Sanguino/bootloaders/atmega644p/ATmegaBOOT.c | 717 |
1 files changed, 717 insertions, 0 deletions
diff --git a/ArduinoAddons/Arduino_1.0.x/hardware/Sanguino/bootloaders/atmega644p/ATmegaBOOT.c b/ArduinoAddons/Arduino_1.0.x/hardware/Sanguino/bootloaders/atmega644p/ATmegaBOOT.c new file mode 100755 index 000000000..51bd8d5f8 --- /dev/null +++ b/ArduinoAddons/Arduino_1.0.x/hardware/Sanguino/bootloaders/atmega644p/ATmegaBOOT.c @@ -0,0 +1,717 @@ +/**********************************************************/ +/* Serial Bootloader for Atmel megaAVR Controllers */ +/* */ +/* tested with ATmega644 and ATmega644P */ +/* should work with other mega's, see code for details */ +/* */ +/* ATmegaBOOT.c */ +/* */ +/* 20090131: Added 324P support from Alex Leone */ +/* Marius Kintel */ +/* 20080915: applied ADABoot mods for Sanguino 644P */ +/* Brian Riley */ +/* 20080711: hacked for Sanguino by Zach Smith */ +/* and Justin Day */ +/* 20070626: hacked for Arduino Diecimila (which auto- */ +/* resets when a USB connection is made to it) */ +/* by D. Mellis */ +/* 20060802: hacked for Arduino by D. Cuartielles */ +/* based on a previous hack by D. Mellis */ +/* and D. Cuartielles */ +/* */ +/* Monitor and debug functions were added to the original */ +/* code by Dr. Erik Lins, chip45.com. (See below) */ +/* */ +/* Thanks to Karl Pitrich for fixing a bootloader pin */ +/* problem and more informative LED blinking! */ +/* */ +/* For the latest version see: */ +/* http://www.chip45.com/ */ +/* */ +/* ------------------------------------------------------ */ +/* */ +/* based on stk500boot.c */ +/* Copyright (c) 2003, Jason P. Kyle */ +/* All rights reserved. */ +/* see avr1.org for original file and information */ +/* */ +/* This program is free software; you can redistribute it */ +/* and/or modify it under the terms of the GNU General */ +/* Public License as published by the Free Software */ +/* Foundation; either version 2 of the License, or */ +/* (at your option) any later version. */ +/* */ +/* This program is distributed in the hope that it will */ +/* be useful, but WITHOUT ANY WARRANTY; without even the */ +/* implied warranty of MERCHANTABILITY or FITNESS FOR A */ +/* PARTICULAR PURPOSE. See the GNU General Public */ +/* License for more details. */ +/* */ +/* You should have received a copy of the GNU General */ +/* Public License along with this program; if not, write */ +/* to the Free Software Foundation, Inc., */ +/* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ +/* */ +/* Licence can be viewed at */ +/* http://www.fsf.org/licenses/gpl.txt */ +/* */ +/* Target = Atmel AVR m128,m64,m32,m16,m8,m162,m163,m169, */ +/* m8515,m8535. ATmega161 has a very small boot block so */ +/* isn't supported. */ +/* */ +/* Tested with m168 */ +/**********************************************************/ + +/* $Id$ */ + + +/* some includes */ +#include <inttypes.h> +#include <avr/io.h> +#include <avr/pgmspace.h> +#include <avr/interrupt.h> +#include <avr/wdt.h> +#include <avr/boot.h> + +#ifdef ADABOOT + #define NUM_LED_FLASHES 3 + #define ADABOOT_VER 1 +#endif + + +/* 20070707: hacked by David A. Mellis - after this many errors give up and launch application */ +#define MAX_ERROR_COUNT 5 + +/* set the UART baud rate */ +/* 20080711: hack by Zach Hoeken */ +#define BAUD_RATE 38400 + +/* SW_MAJOR and MINOR needs to be updated from time to time to avoid warning message from AVR Studio */ +/* never allow AVR Studio to do an update !!!! */ +#define HW_VER 0x02 +#define SW_MAJOR 0x01 +#define SW_MINOR 0x10 + +/* onboard LED is used to indicate, that the bootloader was entered (3x flashing) */ +/* if monitor functions are included, LED goes on after monitor was entered */ +#define LED_DDR DDRB +#define LED_PORT PORTB +#define LED_PIN PINB +#define LED PINB0 + +/* define various device id's */ +/* manufacturer byte is always the same */ +#define SIG1 0x1E // Yep, Atmel is the only manufacturer of AVR micros. Single source :( +#if defined(__AVR_ATmega1284P__) +#define SIG2 0x97 +#define SIG3 0x05 +#elif defined(__AVR_ATmega644P__) +#define SIG2 0x96 +#define SIG3 0x0A +#elif defined(__AVR_ATmega644__) +#define SIG2 0x96 +#define SIG3 0x09 +#elif defined(__AVR_ATmega324P__) +#define SIG2 0x95 +#define SIG3 0x08 +#endif + +#define PAGE_SIZE 0x080U //128 words +#define PAGE_SIZE_BYTES 0x100U //256 bytes + +/* function prototypes */ +void putch(char); +char getch(void); +void getNch(uint8_t); +void byte_response(uint8_t); +void nothing_response(void); +char gethex(void); +void puthex(char); +void flash_led(uint8_t); + +/* some variables */ +union address_union +{ + uint16_t word; + uint8_t byte[2]; +} address; + +union length_union +{ + uint16_t word; + uint8_t byte[2]; +} length; + +struct flags_struct +{ + unsigned eeprom : 1; + unsigned rampz : 1; +} flags; + +uint8_t buff[256]; + +uint8_t error_count = 0; +uint8_t sreg; + +void (*app_start)(void) = 0x0000; + +/* main program starts here */ +int main(void) +{ + uint8_t ch,ch2; + uint16_t w; + uint16_t i; + + asm volatile("nop\n\t"); + +#ifdef ADABOOT // BBR/LF 10/8/2007 & 9/13/2008 + ch = MCUSR; + MCUSR = 0; + + WDTCSR |= _BV(WDCE) | _BV(WDE); + WDTCSR = 0; + + // Check if the WDT was used to reset, in which case we dont bootload and skip straight to the code. woot. + if (! (ch & _BV(EXTRF))) // if it's a not an external reset... + app_start(); // skip bootloader +#endif + + + //initialize our serial port. + UBRR0L = (uint8_t)(F_CPU/(BAUD_RATE*16L)-1); + UBRR0H = (F_CPU/(BAUD_RATE*16L)-1) >> 8; + UCSR0B = (1<<RXEN0) | (1<<TXEN0); + UCSR0C = (1<<UCSZ00) | (1<<UCSZ01); + + /* Enable internal pull-up resistor on pin D0 (RX), in order + to supress line noise that prevents the bootloader from + timing out (DAM: 20070509) */ + DDRD &= ~_BV(PIND0); + PORTD |= _BV(PIND0); + + /* set LED pin as output */ + LED_DDR |= _BV(LED); + + /* flash onboard LED to signal entering of bootloader */ + /* ADABOOT will do two series of flashes. first 4 - signifying ADABOOT */ + /* then a pause and another flash series signifying ADABOOT sub-version */ + + + flash_led(NUM_LED_FLASHES); + + #ifdef ADABOOT + flash_led(ADABOOT_VER); // BBR 9/13/2008 + #endif + + /* forever loop */ + for (;;) + { + /* get character from UART */ + ch = getch(); + + /* A bunch of if...else if... gives smaller code than switch...case ! */ + + /* Hello is anyone home ? */ + if(ch=='0') + nothing_response(); + + + /* Request programmer ID */ + /* Not using PROGMEM string due to boot block in m128 being beyond 64kB boundry */ + /* Would need to selectively manipulate RAMPZ, and it's only 9 characters anyway so who cares. */ + else if(ch=='1') + { + if (getch() == ' ') + { + putch(0x14); + putch('A'); + putch('V'); + putch('R'); + putch(' '); + putch('I'); + putch('S'); + putch('P'); + putch(0x10); + } + else + { + if (++error_count == MAX_ERROR_COUNT) + app_start(); + } + } + + + /* AVR ISP/STK500 board commands DON'T CARE so default nothing_response */ + else if(ch=='@') + { + ch2 = getch(); + if (ch2 > 0x85) + getch(); + nothing_response(); + } + + + /* AVR ISP/STK500 board requests */ + else if(ch=='A') + { + ch2 = getch(); + if(ch2 == 0x80) + byte_response(HW_VER); // Hardware version + else if(ch2==0x81) + byte_response(SW_MAJOR); // Software major version + else if(ch2==0x82) + byte_response(SW_MINOR); // Software minor version + else if(ch2==0x98) + byte_response(0x03); // Unknown but seems to be required by avr studio 3.56 + else + byte_response(0x00); // Covers various unnecessary responses we don't care about + } + + + /* Device Parameters DON'T CARE, DEVICE IS FIXED */ + else if(ch=='B') + { + getNch(20); + nothing_response(); + } + + + /* Parallel programming stuff DON'T CARE */ + else if(ch=='E') + { + getNch(5); + nothing_response(); + } + + + /* Enter programming mode */ + else if(ch=='P') + { + nothing_response(); + } + + + /* Leave programming mode */ + else if(ch=='Q') + { + nothing_response(); +#ifdef ADABOOT + // autoreset via watchdog (sneaky!) BBR/LF 9/13/2008 + WDTCSR = _BV(WDE); + while (1); // 16 ms +#endif + } + + + /* Erase device, don't care as we will erase one page at a time anyway. */ + else if(ch=='R') + { + nothing_response(); + } + + + /* Set address, little endian. EEPROM in bytes, FLASH in words */ + /* Perhaps extra address bytes may be added in future to support > 128kB FLASH. */ + /* This might explain why little endian was used here, big endian used everywhere else. */ + else if(ch=='U') + { + address.byte[0] = getch(); + address.byte[1] = getch(); + nothing_response(); + } + + + /* Universal SPI programming command, disabled. Would be used for fuses and lock bits. */ + else if(ch=='V') + { + getNch(4); + byte_response(0x00); + } + + + /* Write memory, length is big endian and is in bytes */ + else if(ch=='d') + { + length.byte[1] = getch(); + length.byte[0] = getch(); + + flags.eeprom = 0; + if (getch() == 'E') + flags.eeprom = 1; + + for (i=0; i<PAGE_SIZE; i++) + buff[i] = 0; + + for (w = 0; w < length.word; w++) + { + // Store data in buffer, can't keep up with serial data stream whilst programming pages + buff[w] = getch(); + } + + if (getch() == ' ') + { + if (flags.eeprom) + { + //Write to EEPROM one byte at a time + for(w=0;w<length.word;w++) + { + while(EECR & (1<<EEPE)); + + EEAR = (uint16_t)(void *)address.word; + EEDR = buff[w]; + EECR |= (1<<EEMPE); + EECR |= (1<<EEPE); + + address.word++; + } + } + else + { + //address * 2 -> byte location + address.word = address.word << 1; + + //Even up an odd number of bytes + if ((length.byte[0] & 0x01)) + length.word++; + + // HACKME: EEPE used to be EEWE + //Wait for previous EEPROM writes to complete + //while(bit_is_set(EECR,EEPE)); + while(EECR & (1<<EEPE)); + + asm volatile( + "clr r17 \n\t" //page_word_count + "lds r30,address \n\t" //Address of FLASH location (in bytes) + "lds r31,address+1 \n\t" + "ldi r28,lo8(buff) \n\t" //Start of buffer array in RAM + "ldi r29,hi8(buff) \n\t" + "lds r24,length \n\t" //Length of data to be written (in bytes) + "lds r25,length+1 \n\t" + "length_loop: \n\t" //Main loop, repeat for number of words in block + "cpi r17,0x00 \n\t" //If page_word_count=0 then erase page + "brne no_page_erase \n\t" + "wait_spm1: \n\t" + "lds r16,%0 \n\t" //Wait for previous spm to complete + "andi r16,1 \n\t" + "cpi r16,1 \n\t" + "breq wait_spm1 \n\t" + "ldi r16,0x03 \n\t" //Erase page pointed to by Z + "sts %0,r16 \n\t" + "spm \n\t" + "wait_spm2: \n\t" + "lds r16,%0 \n\t" //Wait for previous spm to complete + "andi r16,1 \n\t" + "cpi r16,1 \n\t" + "breq wait_spm2 \n\t" + + "ldi r16,0x11 \n\t" //Re-enable RWW section + "sts %0,r16 \n\t" + "spm \n\t" + "no_page_erase: \n\t" + "ld r0,Y+ \n\t" //Write 2 bytes into page buffer + "ld r1,Y+ \n\t" + + "wait_spm3: \n\t" + "lds r16,%0 \n\t" //Wait for previous spm to complete + "andi r16,1 \n\t" + "cpi r16,1 \n\t" + "breq wait_spm3 \n\t" + "ldi r16,0x01 \n\t" //Load r0,r1 into FLASH page buffer + "sts %0,r16 \n\t" + "spm \n\t" + + "inc r17 \n\t" //page_word_count++ + "cpi r17,%1 \n\t" + "brlo same_page \n\t" //Still same page in FLASH + "write_page: \n\t" + "clr r17 \n\t" //New page, write current one first + "wait_spm4: \n\t" + "lds r16,%0 \n\t" //Wait for previous spm to complete + "andi r16,1 \n\t" + "cpi r16,1 \n\t" + "breq wait_spm4 \n\t" + "ldi r16,0x05 \n\t" //Write page pointed to by Z + "sts %0,r16 \n\t" + "spm \n\t" + "wait_spm5: \n\t" + "lds r16,%0 \n\t" //Wait for previous spm to complete + "andi r16,1 \n\t" + "cpi r16,1 \n\t" + "breq wait_spm5 \n\t" + "ldi r16,0x11 \n\t" //Re-enable RWW section + "sts %0,r16 \n\t" + "spm \n\t" + "same_page: \n\t" + "adiw r30,2 \n\t" //Next word in FLASH + "sbiw r24,2 \n\t" //length-2 + "breq final_write \n\t" //Finished + "rjmp length_loop \n\t" + "final_write: \n\t" + "cpi r17,0 \n\t" + "breq block_done \n\t" + "adiw r24,2 \n\t" //length+2, fool above check on length after short page write + "rjmp write_page \n\t" + "block_done: \n\t" + "clr __zero_reg__ \n\t" //restore zero register + : "=m" (SPMCSR) : "M" (PAGE_SIZE) : "r0","r16","r17","r24","r25","r28","r29","r30","r31" + + ); + } + putch(0x14); + putch(0x10); + } + else + { + if (++error_count == MAX_ERROR_COUNT) + app_start(); + } + } + + /* Read memory block mode, length is big endian. */ + else if(ch=='t') + { + length.byte[1] = getch(); + length.byte[0] = getch(); + + if (getch() == 'E') + flags.eeprom = 1; + else + { + flags.eeprom = 0; + address.word = address.word << 1; // address * 2 -> byte location + } + + // Command terminator + if (getch() == ' ') + { + putch(0x14); + for (w=0; w<length.word; w++) + { + // Can handle odd and even lengths okay + if (flags.eeprom) + { + // Byte access EEPROM read + while(EECR & (1<<EEPE)); + EEAR = (uint16_t)(void *)address.word; + EECR |= (1<<EERE); + putch(EEDR); + + address.word++; + } + else + { + if (!flags.rampz) + putch(pgm_read_byte_near(address.word)); + + address.word++; + } + } + putch(0x10); + } + } + + + /* Get device signature bytes */ + else if(ch=='u') + { + if (getch() == ' ') + { + putch(0x14); + putch(SIG1); + putch(SIG2); + putch(SIG3); + putch(0x10); + } + else + { + if (++error_count == MAX_ERROR_COUNT) + app_start(); + } + } + + + /* Read oscillator calibration byte */ + else if(ch=='v') + byte_response(0x00); + + else if (++error_count == MAX_ERROR_COUNT) + app_start(); + + } + /* end of forever loop */ +} + + +char gethex(void) +{ + char ah,al; + + ah = getch(); + putch(ah); + al = getch(); + putch(al); + + if(ah >= 'a') + ah = ah - 'a' + 0x0a; + else if(ah >= '0') + ah -= '0'; + if(al >= 'a') + al = al - 'a' + 0x0a; + else if(al >= '0') + al -= '0'; + + return (ah << 4) + al; +} + + +void puthex(char ch) +{ + char ah,al; + + ah = (ch & 0xf0) >> 4; + if(ah >= 0x0a) + ah = ah - 0x0a + 'a'; + else + ah += '0'; + + al = (ch & 0x0f); + if(al >= 0x0a) + al = al - 0x0a + 'a'; + else + al += '0'; + + putch(ah); + putch(al); +} + + +void putch(char ch) +{ + while (!(UCSR0A & _BV(UDRE0))); + UDR0 = ch; +} + + + + +char getch(void) +{ + uint32_t count = 0; + +#ifdef ADABOOT + LED_PORT &= ~_BV(LED); // toggle LED to show activity - BBR/LF 10/3/2007 & 9/13/2008 +#endif + + while(!(UCSR0A & _BV(RXC0))) + { + /* 20060803 DojoCorp:: Addon coming from the previous Bootloader*/ + /* HACKME:: here is a good place to count times*/ + count++; + if (count > MAX_TIME_COUNT) + app_start(); + } + +#ifdef ADABOOT + LED_PORT |= _BV(LED); // toggle LED to show activity - BBR/LF 10/3/2007 & 9/13/2008 +#endif + + return UDR0; +} + + +void getNch(uint8_t count) +{ + uint8_t i; + for(i=0;i<count;i++) + { + while(!(UCSR0A & _BV(RXC0))); + UDR0; + } +} + + +void byte_response(uint8_t val) +{ + if (getch() == ' ') + { + putch(0x14); + putch(val); + putch(0x10); + } + else + { + if (++error_count == MAX_ERROR_COUNT) + app_start(); + } +} + + +void nothing_response(void) +{ + if (getch() == ' ') + { + putch(0x14); + putch(0x10); + } + else + { + if (++error_count == MAX_ERROR_COUNT) + app_start(); + } +} + +#ifdef ADABOOT + +void flash_led(uint8_t count) +{ + /* flash onboard LED count times to signal entering of bootloader */ + /* l needs to be volatile or the delay loops below might get */ + /* optimized away if compiling with optimizations (DAM). */ + + volatile uint32_t l; + + if (count == 0) { + count = ADABOOT; + } + + + int8_t i; + for (i = 0; i < count; ++i) { + LED_PORT |= _BV(LED); // LED on + for(l = 0; l < (F_CPU / 1000); ++l); // delay NGvalue was 1000 for both loops - BBR + LED_PORT &= ~_BV(LED); // LED off + for(l = 0; l < (F_CPU / 250); ++l); // delay asymmteric for ADA BOOT BBR + } + + for(l = 0; l < (F_CPU / 100); ++l); // pause ADA BOOT BBR + +} + +#else + +void flash_led(uint8_t count) +{ + /* flash onboard LED three times to signal entering of bootloader */ + /* l needs to be volatile or the delay loops below might get + optimized away if compiling with optimizations (DAM). */ + volatile uint32_t l; + + if (count == 0) { + count = 3; + } + + int8_t i; + for (i = 0; i < count; ++i) { + LED_PORT |= _BV(LED); + for(l = 0; l < (F_CPU / 1000); ++l); + LED_PORT &= ~_BV(LED); + for(l = 0; l < (F_CPU / 1000); ++l); + } + +} + + +#endif + + +/* end of file ATmegaBOOT.c */ |