diff options
Diffstat (limited to 'bootloaders/atmega168/ATmegaBOOT_168.c')
| -rwxr-xr-x | bootloaders/atmega168/ATmegaBOOT_168.c | 992 |
1 files changed, 0 insertions, 992 deletions
diff --git a/bootloaders/atmega168/ATmegaBOOT_168.c b/bootloaders/atmega168/ATmegaBOOT_168.c deleted file mode 100755 index 9413f86..0000000 --- a/bootloaders/atmega168/ATmegaBOOT_168.c +++ /dev/null @@ -1,992 +0,0 @@ -/**********************************************************/
-/* Serial Bootloader for Atmel megaAVR Controllers */
-/* */
-/* tested with ATmega8, ATmega128 and ATmega168 */
-/* should work with other mega's, see code for details */
-/* */
-/* ATmegaBOOT.c */
-/* */
-/* 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 <util/delay.h>
-
-/* the current avr-libc eeprom functions do not support the ATmega168 */
-/* own eeprom write/read functions are used instead */
-#if !defined(__AVR_ATmega168__) || !defined(__AVR_ATmega328P__)
-#include <avr/eeprom.h>
-#endif
-
-/* Use the F_CPU defined in Makefile */
-
-/* 20060803: hacked by DojoCorp */
-/* 20070626: hacked by David A. Mellis to decrease waiting time for auto-reset */
-/* set the waiting time for the bootloader */
-/* get this from the Makefile instead */
-/* #define MAX_TIME_COUNT (F_CPU>>4) */
-
-/* 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 */
-/* 20060803: hacked by DojoCorp */
-//#define BAUD_RATE 115200
-#ifndef BAUD_RATE
-#define BAUD_RATE 19200
-#endif
-
-
-/* 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
-
-
-/* Adjust to suit whatever pin your hardware uses to enter the bootloader */
-/* ATmega128 has two UARTS so two pins are used to enter bootloader and select UART */
-/* BL0... means UART0, BL1... means UART1 */
-#ifdef __AVR_ATmega128__
-#define BL_DDR DDRF
-#define BL_PORT PORTF
-#define BL_PIN PINF
-#define BL0 PINF7
-#define BL1 PINF6
-#else
-/* other ATmegas have only one UART, so only one pin is defined to enter bootloader */
-#define BL_DDR DDRD
-#define BL_PORT PORTD
-#define BL_PIN PIND
-#define BL PIND6
-#endif
-
-
-/* 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 */
-#ifdef __AVR_ATmega128__
-/* Onboard LED is connected to pin PB7 (e.g. Crumb128, PROBOmega128, Savvy128) */
-#define LED_DDR DDRB
-#define LED_PORT PORTB
-#define LED_PIN PINB
-#define LED PINB7
-#else
-/* Onboard LED is connected to pin PB2 (e.g. Crumb8, Crumb168) */
-#define LED_DDR DDRB
-#define LED_PORT PORTB
-#define LED_PIN PINB
-/* 20060803: hacked by DojoCorp, LED pin is B5 in Arduino */
-/* #define LED PINB2 */
-#define LED PINB5
-#endif
-
-
-/* monitor functions will only be compiled when using ATmega128, due to bootblock size constraints */
-#ifdef __AVR_ATmega128__
-#define MONITOR
-#endif
-
-
-/* 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_ATmega128__
-#define SIG2 0x97
-#define SIG3 0x02
-#define PAGE_SIZE 0x80U //128 words
-
-#elif defined __AVR_ATmega64__
-#define SIG2 0x96
-#define SIG3 0x02
-#define PAGE_SIZE 0x80U //128 words
-
-#elif defined __AVR_ATmega32__
-#define SIG2 0x95
-#define SIG3 0x02
-#define PAGE_SIZE 0x40U //64 words
-
-#elif defined __AVR_ATmega16__
-#define SIG2 0x94
-#define SIG3 0x03
-#define PAGE_SIZE 0x40U //64 words
-
-#elif defined __AVR_ATmega8__
-#define SIG2 0x93
-#define SIG3 0x07
-#define PAGE_SIZE 0x20U //32 words
-
-#elif defined __AVR_ATmega88__
-#define SIG2 0x93
-#define SIG3 0x0a
-#define PAGE_SIZE 0x20U //32 words
-
-#elif defined __AVR_ATmega168__
-#define SIG2 0x94
-#define SIG3 0x06
-#define PAGE_SIZE 0x40U //64 words
-
-#elif defined __AVR_ATmega328P__
-#define SIG2 0x95
-#define SIG3 0x0F
-#define PAGE_SIZE 0x40U //64 words
-
-#elif defined __AVR_ATmega162__
-#define SIG2 0x94
-#define SIG3 0x04
-#define PAGE_SIZE 0x40U //64 words
-
-#elif defined __AVR_ATmega163__
-#define SIG2 0x94
-#define SIG3 0x02
-#define PAGE_SIZE 0x40U //64 words
-
-#elif defined __AVR_ATmega169__
-#define SIG2 0x94
-#define SIG3 0x05
-#define PAGE_SIZE 0x40U //64 words
-
-#elif defined __AVR_ATmega8515__
-#define SIG2 0x93
-#define SIG3 0x06
-#define PAGE_SIZE 0x20U //32 words
-
-#elif defined __AVR_ATmega8535__
-#define SIG2 0x93
-#define SIG3 0x08
-#define PAGE_SIZE 0x20U //32 words
-#endif
-
-
-/* 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 address_high;
-
-uint8_t pagesz=0x80;
-
-uint8_t i;
-uint8_t bootuart = 0;
-
-uint8_t error_count = 0;
-
-void (*app_start)(void) = 0x0000;
-
-
-/* main program starts here */
-int main(void)
-{
- uint8_t ch,ch2;
- uint16_t w;
-
-#ifdef WATCHDOG_MODS
- 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 its a not an external reset...
- app_start(); // skip bootloader
-#else
- asm volatile("nop\n\t");
-#endif
-
- /* set pin direction for bootloader pin and enable pullup */
- /* for ATmega128, two pins need to be initialized */
-#ifdef __AVR_ATmega128__
- BL_DDR &= ~_BV(BL0);
- BL_DDR &= ~_BV(BL1);
- BL_PORT |= _BV(BL0);
- BL_PORT |= _BV(BL1);
-#else
- /* We run the bootloader regardless of the state of this pin. Thus, don't
- put it in a different state than the other pins. --DAM, 070709
- BL_DDR &= ~_BV(BL);
- BL_PORT |= _BV(BL);
- */
-#endif
-
-
-#ifdef __AVR_ATmega128__
- /* check which UART should be used for booting */
- if(bit_is_clear(BL_PIN, BL0)) {
- bootuart = 1;
- }
- else if(bit_is_clear(BL_PIN, BL1)) {
- bootuart = 2;
- }
-#endif
-
- /* check if flash is programmed already, if not start bootloader anyway */
- if(pgm_read_byte_near(0x0000) != 0xFF) {
-
-#ifdef __AVR_ATmega128__
- /* no UART was selected, start application */
- if(!bootuart) {
- app_start();
- }
-#else
- /* check if bootloader pin is set low */
- /* we don't start this part neither for the m8, nor m168 */
- //if(bit_is_set(BL_PIN, BL)) {
- // app_start();
- //}
-#endif
- }
-
-#ifdef __AVR_ATmega128__
- /* no bootuart was selected, default to uart 0 */
- if(!bootuart) {
- bootuart = 1;
- }
-#endif
-
-
- /* initialize UART(s) depending on CPU defined */
-#ifdef __AVR_ATmega128__
- if(bootuart == 1) {
- UBRR0L = (uint8_t)(F_CPU/(BAUD_RATE*16L)-1);
- UBRR0H = (F_CPU/(BAUD_RATE*16L)-1) >> 8;
- UCSR0A = 0x00;
- UCSR0C = 0x06;
- UCSR0B = _BV(TXEN0)|_BV(RXEN0);
- }
- if(bootuart == 2) {
- UBRR1L = (uint8_t)(F_CPU/(BAUD_RATE*16L)-1);
- UBRR1H = (F_CPU/(BAUD_RATE*16L)-1) >> 8;
- UCSR1A = 0x00;
- UCSR1C = 0x06;
- UCSR1B = _BV(TXEN1)|_BV(RXEN1);
- }
-#elif defined __AVR_ATmega163__
- UBRR = (uint8_t)(F_CPU/(BAUD_RATE*16L)-1);
- UBRRHI = (F_CPU/(BAUD_RATE*16L)-1) >> 8;
- UCSRA = 0x00;
- UCSRB = _BV(TXEN)|_BV(RXEN);
-#elif defined(__AVR_ATmega168__) || defined(__AVR_ATmega328P__)
- 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);
-#elif defined __AVR_ATmega8__
- /* m8 */
- UBRRH = (((F_CPU/BAUD_RATE)/16)-1)>>8; // set baud rate
- UBRRL = (((F_CPU/BAUD_RATE)/16)-1);
- UCSRB = (1<<RXEN)|(1<<TXEN); // enable Rx & Tx
- UCSRC = (1<<URSEL)|(1<<UCSZ1)|(1<<UCSZ0); // config USART; 8N1
-#else
- /* m16,m32,m169,m8515,m8535 */
- UBRRL = (uint8_t)(F_CPU/(BAUD_RATE*16L)-1);
- UBRRH = (F_CPU/(BAUD_RATE*16L)-1) >> 8;
- UCSRA = 0x00;
- UCSRC = 0x06;
- UCSRB = _BV(TXEN)|_BV(RXEN);
-#endif
-
- /* set LED pin as output */
- LED_DDR |= _BV(LED);
-
-
- /* flash onboard LED to signal entering of bootloader */
-#ifdef __AVR_ATmega128__
- // 4x for UART0, 5x for UART1
- flash_led(NUM_LED_FLASHES + bootuart);
-#else
- flash_led(NUM_LED_FLASHES);
-#endif
-
- /* 20050803: by DojoCorp, this is one of the parts provoking the
- system to stop listening, cancelled from the original */
- //putch('\0');
-
-
- /* 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();
- }
-
-
- /* P: Enter programming mode */
- /* R: Erase device, don't care as we will erase one page at a time anyway. */
- else if(ch=='P' || ch=='R') {
- nothing_response();
- }
-
-
- /* Leave programming mode */
- else if(ch=='Q') {
- nothing_response();
-#ifdef WATCHDOG_MODS
- // autoreset via watchdog (sneaky!)
- WDTCSR = _BV(WDE);
- while (1); // 16 ms
-#endif
- }
-
-
- /* 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') {
- if (getch() == 0x30) {
- getch();
- ch = getch();
- getch();
- if (ch == 0) {
- byte_response(SIG1);
- } else if (ch == 1) {
- byte_response(SIG2);
- } else {
- byte_response(SIG3);
- }
- } else {
- getNch(3);
- 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 (w=0;w<length.word;w++) {
- buff[w] = getch(); // Store data in buffer, can't keep up with serial data stream whilst programming pages
- }
- if (getch() == ' ') {
- if (flags.eeprom) { //Write to EEPROM one byte at a time
- address.word <<= 1;
- for(w=0;w<length.word;w++) {
-#if defined(__AVR_ATmega168__) || defined(__AVR_ATmega328P__)
- while(EECR & (1<<EEPE));
- EEAR = (uint16_t)(void *)address.word;
- EEDR = buff[w];
- EECR |= (1<<EEMPE);
- EECR |= (1<<EEPE);
-#else
- eeprom_write_byte((void *)address.word,buff[w]);
-#endif
- address.word++;
- }
- }
- else { //Write to FLASH one page at a time
- if (address.byte[1]>127) address_high = 0x01; //Only possible with m128, m256 will need 3rd address byte. FIXME
- else address_high = 0x00;
-#ifdef __AVR_ATmega128__
- RAMPZ = address_high;
-#endif
- address.word = address.word << 1; //address * 2 -> byte location
- /* if ((length.byte[0] & 0x01) == 0x01) length.word++; //Even up an odd number of bytes */
- if ((length.byte[0] & 0x01)) length.word++; //Even up an odd number of bytes
- cli(); //Disable interrupts, just to be sure
- // HACKME: EEPE used to be EEWE
- while(bit_is_set(EECR,EEPE)); //Wait for previous EEPROM writes to complete
- 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"
-#ifdef __AVR_ATmega163__
- ".word 0xFFFF \n\t"
- "nop \n\t"
-#endif
- "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"
-#ifdef __AVR_ATmega163__
- ".word 0xFFFF \n\t"
- "nop \n\t"
-#endif
- "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"
-#ifdef __AVR_ATmega163__
- "andi r30,0x80 \n\t" // m163 requires Z6:Z1 to be zero during page write
-#endif
- "ldi r16,0x05 \n\t" //Write page pointed to by Z
- "sts %0,r16 \n\t"
- "spm \n\t"
-#ifdef __AVR_ATmega163__
- ".word 0xFFFF \n\t"
- "nop \n\t"
- "ori r30,0x7E \n\t" // recover Z6:Z1 state after page write (had to be zero during write)
-#endif
- "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"
-#ifdef __AVR_ATmega163__
- ".word 0xFFFF \n\t"
- "nop \n\t"
-#endif
- "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
-#if defined(__AVR_ATmega168__) || defined(__AVR_ATmega328P__)
- : "=m" (SPMCSR) : "M" (PAGE_SIZE) : "r0","r16","r17","r24","r25","r28","r29","r30","r31"
-#else
- : "=m" (SPMCR) : "M" (PAGE_SIZE) : "r0","r16","r17","r24","r25","r28","r29","r30","r31"
-#endif
- );
- /* Should really add a wait for RWW section to be enabled, don't actually need it since we never */
- /* exit the bootloader without a power cycle anyhow */
- }
- 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 defined __AVR_ATmega128__
- if (address.word>0x7FFF) flags.rampz = 1; // No go with m256, FIXME
- else flags.rampz = 0;
-#endif
- address.word = address.word << 1; // address * 2 -> byte location
- if (getch() == 'E') flags.eeprom = 1;
- else flags.eeprom = 0;
- if (getch() == ' ') { // Command terminator
- putch(0x14);
- for (w=0;w < length.word;w++) { // Can handle odd and even lengths okay
- if (flags.eeprom) { // Byte access EEPROM read
-#if defined(__AVR_ATmega168__) || defined(__AVR_ATmega328P__)
- while(EECR & (1<<EEPE));
- EEAR = (uint16_t)(void *)address.word;
- EECR |= (1<<EERE);
- putch(EEDR);
-#else
- putch(eeprom_read_byte((void *)address.word));
-#endif
- address.word++;
- }
- else {
-
- if (!flags.rampz) putch(pgm_read_byte_near(address.word));
-#if defined __AVR_ATmega128__
- else putch(pgm_read_byte_far(address.word + 0x10000));
- // Hmmmm, yuck FIXME when m256 arrvies
-#endif
- 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);
- }
-
-
-#ifdef MONITOR
-
- /* here come the extended monitor commands by Erik Lins */
-
- /* check for three times exclamation mark pressed */
- else if(ch=='!') {
- ch = getch();
- if(ch=='!') {
- ch = getch();
- if(ch=='!') {
-
-#ifdef __AVR_ATmega128__
- uint16_t extaddr;
-#endif
- uint8_t addrl, addrh;
-
-#ifdef CRUMB128
- PGM_P welcome = {"ATmegaBOOT / Crumb128 - (C) J.P.Kyle, E.Lins - 050815\n\r"};
-#elif defined PROBOMEGA128
- PGM_P welcome = {"ATmegaBOOT / PROBOmega128 - (C) J.P.Kyle, E.Lins - 050815\n\r"};
-#elif defined SAVVY128
- PGM_P welcome = {"ATmegaBOOT / Savvy128 - (C) J.P.Kyle, E.Lins - 050815\n\r"};
-#endif
-
- /* turn on LED */
- LED_DDR |= _BV(LED);
- LED_PORT &= ~_BV(LED);
-
- /* print a welcome message and command overview */
- for(i=0; welcome[i] != '\0'; ++i) {
- putch(welcome[i]);
- }
-
- /* test for valid commands */
- for(;;) {
- putch('\n');
- putch('\r');
- putch(':');
- putch(' ');
-
- ch = getch();
- putch(ch);
-
- /* toggle LED */
- if(ch == 't') {
- if(bit_is_set(LED_PIN,LED)) {
- LED_PORT &= ~_BV(LED);
- putch('1');
- } else {
- LED_PORT |= _BV(LED);
- putch('0');
- }
- }
-
- /* read byte from address */
- else if(ch == 'r') {
- ch = getch(); putch(ch);
- addrh = gethex();
- addrl = gethex();
- putch('=');
- ch = *(uint8_t *)((addrh << 8) + addrl);
- puthex(ch);
- }
-
- /* write a byte to address */
- else if(ch == 'w') {
- ch = getch(); putch(ch);
- addrh = gethex();
- addrl = gethex();
- ch = getch(); putch(ch);
- ch = gethex();
- *(uint8_t *)((addrh << 8) + addrl) = ch;
- }
-
- /* read from uart and echo back */
- else if(ch == 'u') {
- for(;;) {
- putch(getch());
- }
- }
-#ifdef __AVR_ATmega128__
- /* external bus loop */
- else if(ch == 'b') {
- putch('b');
- putch('u');
- putch('s');
- MCUCR = 0x80;
- XMCRA = 0;
- XMCRB = 0;
- extaddr = 0x1100;
- for(;;) {
- ch = *(volatile uint8_t *)extaddr;
- if(++extaddr == 0) {
- extaddr = 0x1100;
- }
- }
- }
-#endif
-
- else if(ch == 'j') {
- app_start();
- }
-
- } /* end of monitor functions */
-
- }
- }
- }
- /* end of monitor */
-#endif
- else if (++error_count == MAX_ERROR_COUNT) {
- app_start();
- }
- } /* end of forever loop */
-
-}
-
-
-char gethexnib(void) {
- char a;
- a = getch(); putch(a);
- if(a >= 'a') {
- return (a - 'a' + 0x0a);
- } else if(a >= '0') {
- return(a - '0');
- }
- return a;
-}
-
-
-char gethex(void) {
- return (gethexnib() << 4) + gethexnib();
-}
-
-
-void puthex(char ch) {
- char ah;
-
- ah = ch >> 4;
- if(ah >= 0x0a) {
- ah = ah - 0x0a + 'a';
- } else {
- ah += '0';
- }
-
- ch &= 0x0f;
- if(ch >= 0x0a) {
- ch = ch - 0x0a + 'a';
- } else {
- ch += '0';
- }
-
- putch(ah);
- putch(ch);
-}
-
-
-void putch(char ch)
-{
-#ifdef __AVR_ATmega128__
- if(bootuart == 1) {
- while (!(UCSR0A & _BV(UDRE0)));
- UDR0 = ch;
- }
- else if (bootuart == 2) {
- while (!(UCSR1A & _BV(UDRE1)));
- UDR1 = ch;
- }
-#elif defined(__AVR_ATmega168__) || defined(__AVR_ATmega328P__)
- while (!(UCSR0A & _BV(UDRE0)));
- UDR0 = ch;
-#else
- /* m8,16,32,169,8515,8535,163 */
- while (!(UCSRA & _BV(UDRE)));
- UDR = ch;
-#endif
-}
-
-
-char getch(void)
-{
-#ifdef __AVR_ATmega128__
- if(bootuart == 1) {
- while(!(UCSR0A & _BV(RXC0)));
- return UDR0;
- }
- else if(bootuart == 2) {
- while(!(UCSR1A & _BV(RXC1)));
- return UDR1;
- }
- return 0;
-#elif defined(__AVR_ATmega168__) || defined(__AVR_ATmega328P__)
- uint32_t count = 0;
- 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();
- }
- return UDR0;
-#else
- /* m8,16,32,169,8515,8535,163 */
- uint32_t count = 0;
- while(!(UCSRA & _BV(RXC))){
- /* 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();
- }
- return UDR;
-#endif
-}
-
-
-void getNch(uint8_t count)
-{
- while(count--) {
-#ifdef __AVR_ATmega128__
- if(bootuart == 1) {
- while(!(UCSR0A & _BV(RXC0)));
- UDR0;
- }
- else if(bootuart == 2) {
- while(!(UCSR1A & _BV(RXC1)));
- UDR1;
- }
-#elif defined(__AVR_ATmega168__) || defined(__AVR_ATmega328P__)
- getch();
-#else
- /* m8,16,32,169,8515,8535,163 */
- /* 20060803 DojoCorp:: Addon coming from the previous Bootloader*/
- //while(!(UCSRA & _BV(RXC)));
- //UDR;
- getch(); // need to handle time out
-#endif
- }
-}
-
-
-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();
- }
-}
-
-void flash_led(uint8_t count)
-{
- while (count--) {
- LED_PORT |= _BV(LED);
- _delay_ms(100);
- LED_PORT &= ~_BV(LED);
- _delay_ms(100);
- }
-}
-
-
-/* end of file ATmegaBOOT.c */
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