: #define rstVect (*(uint16_t*)(RAMSTART+SPM_PAGESIZE*2+4)) #define wdtVect (*(uint16_t*)(RAMSTART+SPM_PAGESIZE*2+6)) #endif /* main program starts here */ int main(void) { 3e00: 11 24 eor r1, r1 #ifdef __AVR_ATmega8__ SP=RAMEND; // This is done by hardware reset #endif // Adaboot no-wait mod ch = MCUSR; 3e02: 84 b7 in r24, 0x34 ; 52 MCUSR = 0; 3e04: 14 be out 0x34, r1 ; 52 if (!(ch & _BV(EXTRF))) appStart(); 3e06: 81 ff sbrs r24, 1 3e08: e3 d0 rcall .+454 ; 0x3fd0 #if LED_START_FLASHES > 0 // Set up Timer 1 for timeout counter TCCR1B = _BV(CS12) | _BV(CS10); // div 1024 3e0a: 85 e0 ldi r24, 0x05 ; 5 3e0c: 80 93 81 00 sts 0x0081, r24 UCSRA = _BV(U2X); //Double speed mode USART UCSRB = _BV(RXEN) | _BV(TXEN); // enable Rx & Tx UCSRC = _BV(URSEL) | _BV(UCSZ1) | _BV(UCSZ0); // config USART; 8N1 UBRRL = (uint8_t)( (F_CPU + BAUD_RATE * 4L) / (BAUD_RATE * 8L) - 1 ); #else UCSR0A = _BV(U2X0); //Double speed mode USART0 3e10: 82 e0 ldi r24, 0x02 ; 2 3e12: 80 93 c0 00 sts 0x00C0, r24 UCSR0B = _BV(RXEN0) | _BV(TXEN0); 3e16: 88 e1 ldi r24, 0x18 ; 24 3e18: 80 93 c1 00 sts 0x00C1, r24 UCSR0C = _BV(UCSZ00) | _BV(UCSZ01); 3e1c: 86 e0 ldi r24, 0x06 ; 6 3e1e: 80 93 c2 00 sts 0x00C2, r24 UBRR0L = (uint8_t)( (F_CPU + BAUD_RATE * 4L) / (BAUD_RATE * 8L) - 1 ); 3e22: 88 e0 ldi r24, 0x08 ; 8 3e24: 80 93 c4 00 sts 0x00C4, r24 #endif #endif // Set up watchdog to trigger after 500ms watchdogConfig(WATCHDOG_1S); 3e28: 8e e0 ldi r24, 0x0E ; 14 3e2a: bc d0 rcall .+376 ; 0x3fa4 /* Set LED pin as output */ LED_DDR |= _BV(LED); 3e2c: 25 9a sbi 0x04, 5 ; 4 3e2e: 86 e0 ldi r24, 0x06 ; 6 } #if LED_START_FLASHES > 0 void flash_led(uint8_t count) { do { TCNT1 = -(F_CPU/(1024*16)); 3e30: 28 e1 ldi r18, 0x18 ; 24 3e32: 3e ef ldi r19, 0xFE ; 254 TIFR1 = _BV(TOV1); 3e34: 91 e0 ldi r25, 0x01 ; 1 } #if LED_START_FLASHES > 0 void flash_led(uint8_t count) { do { TCNT1 = -(F_CPU/(1024*16)); 3e36: 30 93 85 00 sts 0x0085, r19 3e3a: 20 93 84 00 sts 0x0084, r18 TIFR1 = _BV(TOV1); 3e3e: 96 bb out 0x16, r25 ; 22 while(!(TIFR1 & _BV(TOV1))); 3e40: b0 9b sbis 0x16, 0 ; 22 3e42: fe cf rjmp .-4 ; 0x3e40 #ifdef __AVR_ATmega8__ LED_PORT ^= _BV(LED); #else LED_PIN |= _BV(LED); 3e44: 1d 9a sbi 0x03, 5 ; 3 } #endif // Watchdog functions. These are only safe with interrupts turned off. void watchdogReset() { __asm__ __volatile__ ( 3e46: a8 95 wdr LED_PORT ^= _BV(LED); #else LED_PIN |= _BV(LED); #endif watchdogReset(); } while (--count); 3e48: 81 50 subi r24, 0x01 ; 1 3e4a: a9 f7 brne .-22 ; 0x3e36 /* get character from UART */ ch = getch(); if(ch == STK_GET_PARAMETER) { // GET PARAMETER returns a generic 0x03 reply - enough to keep Avrdude happy getNch(1); 3e4c: 99 24 eor r9, r9 3e4e: 93 94 inc r9 __boot_page_fill_short((uint16_t)(void*)addrPtr,a); addrPtr += 2; } while (--ch); // Write from programming buffer __boot_page_write_short((uint16_t)(void*)address); 3e50: a5 e0 ldi r26, 0x05 ; 5 3e52: aa 2e mov r10, r26 boot_spm_busy_wait(); #if defined(RWWSRE) // Reenable read access to flash boot_rww_enable(); 3e54: f1 e1 ldi r31, 0x11 ; 17 3e56: bf 2e mov r11, r31 #endif /* Forever loop */ for (;;) { /* get character from UART */ ch = getch(); 3e58: 9d d0 rcall .+314 ; 0x3f94 if(ch == STK_GET_PARAMETER) { 3e5a: 81 34 cpi r24, 0x41 ; 65 3e5c: 21 f4 brne .+8 ; 0x3e66 // GET PARAMETER returns a generic 0x03 reply - enough to keep Avrdude happy getNch(1); 3e5e: 81 e0 ldi r24, 0x01 ; 1 3e60: af d0 rcall .+350 ; 0x3fc0 putch(0x03); 3e62: 83 e0 ldi r24, 0x03 ; 3 3e64: 1f c0 rjmp .+62 ; 0x3ea4 } else if(ch == STK_SET_DEVICE) { 3e66: 82 34 cpi r24, 0x42 ; 66 3e68: 11 f4 brne .+4 ; 0x3e6e // SET DEVICE is ignored getNch(20); 3e6a: 84 e1 ldi r24, 0x14 ; 20 3e6c: 03 c0 rjmp .+6 ; 0x3e74 } else if(ch == STK_SET_DEVICE_EXT) { 3e6e: 85 34 cpi r24, 0x45 ; 69 3e70: 19 f4 brne .+6 ; 0x3e78 // SET DEVICE EXT is ignored getNch(5); 3e72: 85 e0 ldi r24, 0x05 ; 5 3e74: a5 d0 rcall .+330 ; 0x3fc0 3e76: 83 c0 rjmp .+262 ; 0x3f7e } else if(ch == STK_LOAD_ADDRESS) { 3e78: 85 35 cpi r24, 0x55 ; 85 3e7a: 79 f4 brne .+30 ; 0x3e9a // LOAD ADDRESS uint16_t newAddress; newAddress = getch(); 3e7c: 8b d0 rcall .+278 ; 0x3f94 newAddress = (newAddress & 0xff) | (getch() << 8); 3e7e: e8 2e mov r14, r24 3e80: ff 24 eor r15, r15 3e82: 88 d0 rcall .+272 ; 0x3f94 3e84: 08 2f mov r16, r24 3e86: 10 e0 ldi r17, 0x00 ; 0 3e88: 10 2f mov r17, r16 3e8a: 00 27 eor r16, r16 3e8c: 0e 29 or r16, r14 3e8e: 1f 29 or r17, r15 #ifdef RAMPZ // Transfer top bit to RAMPZ RAMPZ = (newAddress & 0x8000) ? 1 : 0; #endif newAddress += newAddress; // Convert from word address to byte address 3e90: 00 0f add r16, r16 3e92: 11 1f adc r17, r17 address = newAddress; verifySpace(); 3e94: 8d d0 rcall .+282 ; 0x3fb0 3e96: 68 01 movw r12, r16 3e98: 72 c0 rjmp .+228 ; 0x3f7e } else if(ch == STK_UNIVERSAL) { 3e9a: 86 35 cpi r24, 0x56 ; 86 3e9c: 29 f4 brne .+10 ; 0x3ea8 // UNIVERSAL command is ignored getNch(4); 3e9e: 84 e0 ldi r24, 0x04 ; 4 3ea0: 8f d0 rcall .+286 ; 0x3fc0 putch(0x00); 3ea2: 80 e0 ldi r24, 0x00 ; 0 3ea4: 6f d0 rcall .+222 ; 0x3f84 3ea6: 6b c0 rjmp .+214 ; 0x3f7e } /* Write memory, length is big endian and is in bytes */ else if(ch == STK_PROG_PAGE) { 3ea8: 84 36 cpi r24, 0x64 ; 100 3eaa: 09 f0 breq .+2 ; 0x3eae 3eac: 42 c0 rjmp .+132 ; 0x3f32 // PROGRAM PAGE - we support flash programming only, not EEPROM uint8_t *bufPtr; uint16_t addrPtr; getch(); /* getlen() */ 3eae: 72 d0 rcall .+228 ; 0x3f94 length = getch(); 3eb0: 71 d0 rcall .+226 ; 0x3f94 3eb2: 08 2f mov r16, r24 getch(); 3eb4: 6f d0 rcall .+222 ; 0x3f94 // If we are in RWW section, immediately start page erase if (address < NRWWSTART) __boot_page_erase_short((uint16_t)(void*)address); 3eb6: 80 e0 ldi r24, 0x00 ; 0 3eb8: c8 16 cp r12, r24 3eba: 88 e3 ldi r24, 0x38 ; 56 3ebc: d8 06 cpc r13, r24 3ebe: 20 f4 brcc .+8 ; 0x3ec8 3ec0: 83 e0 ldi r24, 0x03 ; 3 3ec2: f6 01 movw r30, r12 3ec4: 87 bf out 0x37, r24 ; 55 3ec6: e8 95 spm 3ec8: c0 e0 ldi r28, 0x00 ; 0 3eca: d1 e0 ldi r29, 0x01 ; 1 // While that is going on, read in page contents bufPtr = buff; do *bufPtr++ = getch(); 3ecc: 63 d0 rcall .+198 ; 0x3f94 3ece: 89 93 st Y+, r24 while (--length); 3ed0: 0c 17 cp r16, r28 3ed2: e1 f7 brne .-8 ; 0x3ecc // If we are in NRWW section, page erase has to be delayed until now. // Todo: Take RAMPZ into account if (address >= NRWWSTART) __boot_page_erase_short((uint16_t)(void*)address); 3ed4: f0 e0 ldi r31, 0x00 ; 0 3ed6: cf 16 cp r12, r31 3ed8: f8 e3 ldi r31, 0x38 ; 56 3eda: df 06 cpc r13, r31 3edc: 20 f0 brcs .+8 ; 0x3ee6 3ede: 83 e0 ldi r24, 0x03 ; 3 3ee0: f6 01 movw r30, r12 3ee2: 87 bf out 0x37, r24 ; 55 3ee4: e8 95 spm // Read command terminator, start reply verifySpace(); 3ee6: 64 d0 rcall .+200 ; 0x3fb0 // If only a partial page is to be programmed, the erase might not be complete. // So check that here boot_spm_busy_wait(); 3ee8: 07 b6 in r0, 0x37 ; 55 3eea: 00 fc sbrc r0, 0 3eec: fd cf rjmp .-6 ; 0x3ee8 3eee: a6 01 movw r20, r12 3ef0: a0 e0 ldi r26, 0x00 ; 0 3ef2: b1 e0 ldi r27, 0x01 ; 1 bufPtr = buff; addrPtr = (uint16_t)(void*)address; ch = SPM_PAGESIZE / 2; do { uint16_t a; a = *bufPtr++; 3ef4: 2c 91 ld r18, X 3ef6: 30 e0 ldi r19, 0x00 ; 0 a |= (*bufPtr++) << 8; 3ef8: 11 96 adiw r26, 0x01 ; 1 3efa: 8c 91 ld r24, X 3efc: 11 97 sbiw r26, 0x01 ; 1 3efe: 90 e0 ldi r25, 0x00 ; 0 3f00: 98 2f mov r25, r24 3f02: 88 27 eor r24, r24 3f04: 82 2b or r24, r18 3f06: 93 2b or r25, r19 #define rstVect (*(uint16_t*)(RAMSTART+SPM_PAGESIZE*2+4)) #define wdtVect (*(uint16_t*)(RAMSTART+SPM_PAGESIZE*2+6)) #endif /* main program starts here */ int main(void) { 3f08: 12 96 adiw r26, 0x02 ; 2 ch = SPM_PAGESIZE / 2; do { uint16_t a; a = *bufPtr++; a |= (*bufPtr++) << 8; __boot_page_fill_short((uint16_t)(void*)addrPtr,a); 3f0a: fa 01 movw r30, r20 3f0c: 0c 01 movw r0, r24 3f0e: 97 be out 0x37, r9 ; 55 3f10: e8 95 spm 3f12: 11 24 eor r1, r1 addrPtr += 2; 3f14: 4e 5f subi r20, 0xFE ; 254 3f16: 5f 4f sbci r21, 0xFF ; 255 } while (--ch); 3f18: f1 e0 ldi r31, 0x01 ; 1 3f1a: a0 38 cpi r26, 0x80 ; 128 3f1c: bf 07 cpc r27, r31 3f1e: 51 f7 brne .-44 ; 0x3ef4 // Write from programming buffer __boot_page_write_short((uint16_t)(void*)address); 3f20: f6 01 movw r30, r12 3f22: a7 be out 0x37, r10 ; 55 3f24: e8 95 spm boot_spm_busy_wait(); 3f26: 07 b6 in r0, 0x37 ; 55 3f28: 00 fc sbrc r0, 0 3f2a: fd cf rjmp .-6 ; 0x3f26 #if defined(RWWSRE) // Reenable read access to flash boot_rww_enable(); 3f2c: b7 be out 0x37, r11 ; 55 3f2e: e8 95 spm 3f30: 26 c0 rjmp .+76 ; 0x3f7e #endif } /* Read memory block mode, length is big endian. */ else if(ch == STK_READ_PAGE) { 3f32: 84 37 cpi r24, 0x74 ; 116 3f34: b1 f4 brne .+44 ; 0x3f62 // READ PAGE - we only read flash getch(); /* getlen() */ 3f36: 2e d0 rcall .+92 ; 0x3f94 length = getch(); 3f38: 2d d0 rcall .+90 ; 0x3f94 3f3a: f8 2e mov r15, r24 getch(); 3f3c: 2b d0 rcall .+86 ; 0x3f94 verifySpace(); 3f3e: 38 d0 rcall .+112 ; 0x3fb0 3f40: f6 01 movw r30, r12 3f42: ef 2c mov r14, r15 putch(result); address++; } while (--length); #else do putch(pgm_read_byte_near(address++)); 3f44: 8f 01 movw r16, r30 3f46: 0f 5f subi r16, 0xFF ; 255 3f48: 1f 4f sbci r17, 0xFF ; 255 3f4a: 84 91 lpm r24, Z+ 3f4c: 1b d0 rcall .+54 ; 0x3f84 while (--length); 3f4e: ea 94 dec r14 3f50: f8 01 movw r30, r16 3f52: c1 f7 brne .-16 ; 0x3f44 #define rstVect (*(uint16_t*)(RAMSTART+SPM_PAGESIZE*2+4)) #define wdtVect (*(uint16_t*)(RAMSTART+SPM_PAGESIZE*2+6)) #endif /* main program starts here */ int main(void) { 3f54: 08 94 sec 3f56: c1 1c adc r12, r1 3f58: d1 1c adc r13, r1 3f5a: fa 94 dec r15 3f5c: cf 0c add r12, r15 3f5e: d1 1c adc r13, r1 3f60: 0e c0 rjmp .+28 ; 0x3f7e #endif #endif } /* Get device signature bytes */ else if(ch == STK_READ_SIGN) { 3f62: 85 37 cpi r24, 0x75 ; 117 3f64: 39 f4 brne .+14 ; 0x3f74 // READ SIGN - return what Avrdude wants to hear verifySpace(); 3f66: 24 d0 rcall .+72 ; 0x3fb0 putch(SIGNATURE_0); 3f68: 8e e1 ldi r24, 0x1E ; 30 3f6a: 0c d0 rcall .+24 ; 0x3f84 putch(SIGNATURE_1); 3f6c: 84 e9 ldi r24, 0x94 ; 148 3f6e: 0a d0 rcall .+20 ; 0x3f84 putch(SIGNATURE_2); 3f70: 86 e0 ldi r24, 0x06 ; 6 3f72: 98 cf rjmp .-208 ; 0x3ea4 } else if (ch == 'Q') { 3f74: 81 35 cpi r24, 0x51 ; 81 3f76: 11 f4 brne .+4 ; 0x3f7c // Adaboot no-wait mod watchdogConfig(WATCHDOG_16MS); 3f78: 88 e0 ldi r24, 0x08 ; 8 3f7a: 14 d0 rcall .+40 ; 0x3fa4 verifySpace(); } else { // This covers the response to commands like STK_ENTER_PROGMODE verifySpace(); 3f7c: 19 d0 rcall .+50 ; 0x3fb0 } putch(STK_OK); 3f7e: 80 e1 ldi r24, 0x10 ; 16 3f80: 01 d0 rcall .+2 ; 0x3f84 3f82: 6a cf rjmp .-300 ; 0x3e58 00003f84 : } } void putch(char ch) { 3f84: 98 2f mov r25, r24 #ifndef SOFT_UART while (!(UCSR0A & _BV(UDRE0))); 3f86: 80 91 c0 00 lds r24, 0x00C0 3f8a: 85 ff sbrs r24, 5 3f8c: fc cf rjmp .-8 ; 0x3f86 UDR0 = ch; 3f8e: 90 93 c6 00 sts 0x00C6, r25 [uartBit] "I" (UART_TX_BIT) : "r25" ); #endif } 3f92: 08 95 ret 00003f94 : } #endif // Watchdog functions. These are only safe with interrupts turned off. void watchdogReset() { __asm__ __volatile__ ( 3f94: a8 95 wdr [uartBit] "I" (UART_RX_BIT) : "r25" ); #else while(!(UCSR0A & _BV(RXC0))); 3f96: 80 91 c0 00 lds r24, 0x00C0 3f9a: 87 ff sbrs r24, 7 3f9c: fc cf rjmp .-8 ; 0x3f96 ch = UDR0; 3f9e: 80 91 c6 00 lds r24, 0x00C6 LED_PIN |= _BV(LED); #endif #endif return ch; } 3fa2: 08 95 ret 00003fa4 : "wdr\n" ); } void watchdogConfig(uint8_t x) { WDTCSR = _BV(WDCE) | _BV(WDE); 3fa4: e0 e6 ldi r30, 0x60 ; 96 3fa6: f0 e0 ldi r31, 0x00 ; 0 3fa8: 98 e1 ldi r25, 0x18 ; 24 3faa: 90 83 st Z, r25 WDTCSR = x; 3fac: 80 83 st Z, r24 } 3fae: 08 95 ret 00003fb0 : do getch(); while (--count); verifySpace(); } void verifySpace() { if (getch() != CRC_EOP) { 3fb0: f1 df rcall .-30 ; 0x3f94 3fb2: 80 32 cpi r24, 0x20 ; 32 3fb4: 19 f0 breq .+6 ; 0x3fbc watchdogConfig(WATCHDOG_16MS); // shorten WD timeout 3fb6: 88 e0 ldi r24, 0x08 ; 8 3fb8: f5 df rcall .-22 ; 0x3fa4 3fba: ff cf rjmp .-2 ; 0x3fba while (1) // and busy-loop so that WD causes ; // a reset and app start. } putch(STK_INSYNC); 3fbc: 84 e1 ldi r24, 0x14 ; 20 } 3fbe: e2 cf rjmp .-60 ; 0x3f84 00003fc0 : ::[count] "M" (UART_B_VALUE) ); } #endif void getNch(uint8_t count) { 3fc0: 1f 93 push r17 3fc2: 18 2f mov r17, r24 do getch(); while (--count); 3fc4: e7 df rcall .-50 ; 0x3f94 3fc6: 11 50 subi r17, 0x01 ; 1 3fc8: e9 f7 brne .-6 ; 0x3fc4 verifySpace(); 3fca: f2 df rcall .-28 ; 0x3fb0 } 3fcc: 1f 91 pop r17 3fce: 08 95 ret 00003fd0 : WDTCSR = _BV(WDCE) | _BV(WDE); WDTCSR = x; } void appStart() { watchdogConfig(WATCHDOG_OFF); 3fd0: 80 e0 ldi r24, 0x00 ; 0 3fd2: e8 df rcall .-48 ; 0x3fa4 __asm__ __volatile__ ( 3fd4: ee 27 eor r30, r30 3fd6: ff 27 eor r31, r31 3fd8: 09 94 ijmp