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Diffstat (limited to 'ArduinoAddons/Arduino_1.0.x/hardware/Sanguino/bootloaders/atmega644p/ATmegaBOOT.c.tst')
| -rwxr-xr-x | ArduinoAddons/Arduino_1.0.x/hardware/Sanguino/bootloaders/atmega644p/ATmegaBOOT.c.tst | 388 |
1 files changed, 388 insertions, 0 deletions
diff --git a/ArduinoAddons/Arduino_1.0.x/hardware/Sanguino/bootloaders/atmega644p/ATmegaBOOT.c.tst b/ArduinoAddons/Arduino_1.0.x/hardware/Sanguino/bootloaders/atmega644p/ATmegaBOOT.c.tst new file mode 100755 index 000000000..7e0adffae --- /dev/null +++ b/ArduinoAddons/Arduino_1.0.x/hardware/Sanguino/bootloaders/atmega644p/ATmegaBOOT.c.tst @@ -0,0 +1,388 @@ +/**********************************************************/ +/* 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> +#include <util/delay.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 (;;) + { + putch('\r'); + _delay_ms(500); + } + /* 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 */ |