From 3898f82e7da63ee529eaaecd52f4cc78191319e9 Mon Sep 17 00:00:00 2001 From: "David A. Mellis" Date: Sat, 11 Oct 2008 15:20:39 +0000 Subject: Reindenting the ATmega168 bootloader file. It was a mess (and still is somewhat of one). --- bootloaders/atmega168/ATmegaBOOT_168.c | 1030 ++++++++++++++++---------------- 1 file changed, 513 insertions(+), 517 deletions(-) (limited to 'bootloaders/atmega168') diff --git a/bootloaders/atmega168/ATmegaBOOT_168.c b/bootloaders/atmega168/ATmegaBOOT_168.c index 7bbf24e..f1c1cdf 100755 --- a/bootloaders/atmega168/ATmegaBOOT_168.c +++ b/bootloaders/atmega168/ATmegaBOOT_168.c @@ -218,18 +218,18 @@ void flash_led(uint8_t); /* some variables */ union address_union { - uint16_t word; - uint8_t byte[2]; + uint16_t word; + uint8_t byte[2]; } address; union length_union { - uint16_t word; - uint8_t byte[2]; + uint16_t word; + uint8_t byte[2]; } length; struct flags_struct { - unsigned eeprom : 1; - unsigned rampz : 1; + unsigned eeprom : 1; + unsigned rampz : 1; } flags; uint8_t buff[256]; @@ -248,140 +248,140 @@ void (*app_start)(void) = 0x0000; /* main program starts here */ int main(void) { - uint8_t ch,ch2; - uint16_t w; + uint8_t ch,ch2; + uint16_t w; #ifdef WATCHDOG_MODS - ch = MCUSR; - MCUSR = 0; + ch = MCUSR; + MCUSR = 0; - WDTCSR |= _BV(WDCE) | _BV(WDE); - WDTCSR = 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 + // 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"); + asm volatile("nop\n\t"); #endif - /* set pin direction for bootloader pin and enable pullup */ - /* for ATmega128, two pins need to be initialized */ + /* 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); + 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); - */ + /* 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; - } + /* 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) { + /* 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(); - } + /* 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(); - // } + /* 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; - } +#ifdef __AVR_ATmega128__ + /* no bootuart was selected, default to uart 0 */ + if(!bootuart) { + bootuart = 1; + } #endif - /* initialize UART(s) depending on CPU defined */ + /* 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); - } + 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); + 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__ - UBRR0L = (uint8_t)(F_CPU/(BAUD_RATE*16L)-1); - UBRR0H = (F_CPU/(BAUD_RATE*16L)-1) >> 8; - UCSR0B = (1<> 8; + UCSR0B = (1<>8; // set baud rate - UBRRL = (((F_CPU/BAUD_RATE)/16)-1); - UCSRB = (1<>8; // set baud rate + UBRRL = (((F_CPU/BAUD_RATE)/16)-1); + UCSRB = (1<> 8; - UCSRA = 0x00; - UCSRC = 0x06; - UCSRB = _BV(TXEN)|_BV(RXEN); + /* 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); + /* set LED pin as output */ + LED_DDR |= _BV(LED); - /* flash onboard LED to signal entering of bootloader */ + /* flash onboard LED to signal entering of bootloader */ #ifdef __AVR_ATmega128__ - // 4x for UART0, 5x for UART1 - flash_led(NUM_LED_FLASHES + bootuart); + // 4x for UART0, 5x for UART1 + flash_led(NUM_LED_FLASHES + bootuart); #else - flash_led(NUM_LED_FLASHES); + 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'); + + /* 20050803: by DojoCorp, this is one of the parts provoking the + system to stop listening, cancelled from the original */ + //putch('\0'); - /* forever loop */ - for (;;) { + /* forever loop */ + for (;;) { /* get character from UART */ ch = getch(); @@ -390,7 +390,7 @@ int main(void) /* Hello is anyone home ? */ if(ch=='0') { - nothing_response(); + nothing_response(); } @@ -398,76 +398,76 @@ int main(void) /* 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(); - } + 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(); + 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 + 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(); + getNch(20); + nothing_response(); } /* Parallel programming stuff DON'T CARE */ else if(ch=='E') { - getNch(5); - nothing_response(); + getNch(5); + nothing_response(); } /* Enter programming mode */ else if(ch=='P') { - nothing_response(); + nothing_response(); } /* Leave programming mode */ else if(ch=='Q') { - nothing_response(); + nothing_response(); #ifdef WATCHDOG_MODS - // autoreset via watchdog (sneaky!) - WDTCSR = _BV(WDE); - while (1); // 16 ms + // autoreset via watchdog (sneaky!) + 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(); + nothing_response(); } @@ -475,227 +475,227 @@ int main(void) /* 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(); + 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); + 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 (w=0;w127) address_high = 0x01; //Only possible with m128, m256 will need 3rd address byte. FIXME - else address_high = 0x00; + 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; + 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" + 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" + ".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" + "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" + ".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" + "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 + "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" + "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) + ".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" + "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" + ".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 + "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__ - : "=m" (SPMCSR) : "M" (PAGE_SIZE) : "r0","r16","r17","r24","r25","r28","r29","r30","r31" + : "=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" + : "=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(); - } + ); + /* 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(); + + /* 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; + if (address.word>0x7FFF) flags.rampz = 1; // No go with m256, FIXME + else flags.rampz = 0; #endif - if (getch() == 'E') flags.eeprom = 1; - else { - flags.eeprom = 0; - address.word = address.word << 1; // address * 2 -> byte location - } - 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 (getch() == 'E') flags.eeprom = 1; + else { + flags.eeprom = 0; + address.word = address.word << 1; // address * 2 -> byte location + } + 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 #ifdef __AVR_ATmega168__ - while(EECR & (1<= '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; + 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); + 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) { #ifdef __AVR_ATmega128__ - if(bootuart == 1) { + if(bootuart == 1) { + while (!(UCSR0A & _BV(UDRE0))); + UDR0 = ch; + } + else if (bootuart == 2) { + while (!(UCSR1A & _BV(UDRE1))); + UDR1 = ch; + } +#elif defined __AVR_ATmega168__ while (!(UCSR0A & _BV(UDRE0))); UDR0 = ch; - } - else if (bootuart == 2) { - while (!(UCSR1A & _BV(UDRE1))); - UDR1 = ch; - } -#elif defined __AVR_ATmega168__ - while (!(UCSR0A & _BV(UDRE0))); - UDR0 = ch; #else - /* m8,16,32,169,8515,8535,163 */ - while (!(UCSRA & _BV(UDRE))); - UDR = ch; + /* m8,16,32,169,8515,8535,163 */ + while (!(UCSRA & _BV(UDRE))); + UDR = ch; #endif } @@ -885,111 +881,111 @@ void putch(char ch) 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; + 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__ - 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; + 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; + /* 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) { - uint8_t i; - for(i=0;i