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521 lines
16 KiB
Plaintext
521 lines
16 KiB
Plaintext
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optiboot_atmega328.elf: file format elf32-avr
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Sections:
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Idx Name Size VMA LMA File off Algn
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0 .text 000001ec 00007e00 00007e00 00000054 2**1
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CONTENTS, ALLOC, LOAD, READONLY, CODE
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1 .debug_aranges 00000028 00000000 00000000 00000240 2**0
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CONTENTS, READONLY, DEBUGGING
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2 .debug_pubnames 0000006a 00000000 00000000 00000268 2**0
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CONTENTS, READONLY, DEBUGGING
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3 .debug_info 00000269 00000000 00000000 000002d2 2**0
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CONTENTS, READONLY, DEBUGGING
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4 .debug_abbrev 00000196 00000000 00000000 0000053b 2**0
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CONTENTS, READONLY, DEBUGGING
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5 .debug_line 000003d3 00000000 00000000 000006d1 2**0
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CONTENTS, READONLY, DEBUGGING
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6 .debug_frame 00000090 00000000 00000000 00000aa4 2**2
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CONTENTS, READONLY, DEBUGGING
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7 .debug_str 00000135 00000000 00000000 00000b34 2**0
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CONTENTS, READONLY, DEBUGGING
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8 .debug_loc 000001d1 00000000 00000000 00000c69 2**0
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CONTENTS, READONLY, DEBUGGING
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9 .debug_ranges 00000068 00000000 00000000 00000e3a 2**0
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CONTENTS, READONLY, DEBUGGING
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Disassembly of section .text:
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00007e00 <main>:
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#ifdef VIRTUAL_BOOT_PARTITION
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#define rstVect (*(uint16_t*)(0x204))
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#define wdtVect (*(uint16_t*)(0x206))
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#endif
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/* main program starts here */
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int main(void) {
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7e00: 85 e0 ldi r24, 0x05 ; 5
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7e02: 80 93 81 00 sts 0x0081, r24
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#if LED_START_FLASHES > 0
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// Set up Timer 1 for timeout counter
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TCCR1B = _BV(CS12) | _BV(CS10); // div 1024
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#endif
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#ifndef SOFT_UART
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UCSR0A = _BV(U2X0); //Double speed mode USART0
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7e06: 82 e0 ldi r24, 0x02 ; 2
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7e08: 80 93 c0 00 sts 0x00C0, r24
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UCSR0B = _BV(RXEN0) | _BV(TXEN0);
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7e0c: 88 e1 ldi r24, 0x18 ; 24
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7e0e: 80 93 c1 00 sts 0x00C1, r24
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UCSR0C = _BV(UCSZ00) | _BV(UCSZ01);
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7e12: 86 e0 ldi r24, 0x06 ; 6
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7e14: 80 93 c2 00 sts 0x00C2, r24
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UBRR0L = (uint8_t)( (F_CPU + BAUD_RATE * 4L) / (BAUD_RATE * 8L) - 1 );
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7e18: 80 e1 ldi r24, 0x10 ; 16
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7e1a: 80 93 c4 00 sts 0x00C4, r24
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#endif
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// Adaboot no-wait mod
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ch = MCUSR;
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7e1e: 84 b7 in r24, 0x34 ; 52
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MCUSR = 0;
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7e20: 14 be out 0x34, r1 ; 52
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if (!(ch & _BV(EXTRF))) appStart();
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7e22: 81 ff sbrs r24, 1
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7e24: d0 d0 rcall .+416 ; 0x7fc6 <appStart>
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// Set up watchdog to trigger after 500ms
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watchdogConfig(WATCHDOG_500MS);
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7e26: 8d e0 ldi r24, 0x0D ; 13
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7e28: c8 d0 rcall .+400 ; 0x7fba <watchdogConfig>
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/* Set LED pin as output */
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LED_DDR |= _BV(LED);
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7e2a: 25 9a sbi 0x04, 5 ; 4
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7e2c: 86 e0 ldi r24, 0x06 ; 6
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}
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#if LED_START_FLASHES > 0
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void flash_led(uint8_t count) {
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do {
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TCNT1 = -(F_CPU/(1024*16));
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7e2e: 20 e3 ldi r18, 0x30 ; 48
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7e30: 3c ef ldi r19, 0xFC ; 252
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TIFR1 = _BV(TOV1);
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7e32: 91 e0 ldi r25, 0x01 ; 1
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}
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#if LED_START_FLASHES > 0
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void flash_led(uint8_t count) {
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do {
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TCNT1 = -(F_CPU/(1024*16));
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7e34: 30 93 85 00 sts 0x0085, r19
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7e38: 20 93 84 00 sts 0x0084, r18
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TIFR1 = _BV(TOV1);
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7e3c: 96 bb out 0x16, r25 ; 22
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while(!(TIFR1 & _BV(TOV1)));
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7e3e: b0 9b sbis 0x16, 0 ; 22
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7e40: fe cf rjmp .-4 ; 0x7e3e <main+0x3e>
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LED_PIN |= _BV(LED);
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7e42: 1d 9a sbi 0x03, 5 ; 3
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return getch();
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}
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// Watchdog functions. These are only safe with interrupts turned off.
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void watchdogReset() {
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__asm__ __volatile__ (
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7e44: a8 95 wdr
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TCNT1 = -(F_CPU/(1024*16));
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TIFR1 = _BV(TOV1);
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while(!(TIFR1 & _BV(TOV1)));
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LED_PIN |= _BV(LED);
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watchdogReset();
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} while (--count);
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7e46: 81 50 subi r24, 0x01 ; 1
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7e48: a9 f7 brne .-22 ; 0x7e34 <main+0x34>
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/* get character from UART */
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ch = getch();
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if(ch == STK_GET_PARAMETER) {
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// GET PARAMETER returns a generic 0x03 reply - enough to keep Avrdude happy
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getNch(1);
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7e4a: dd 24 eor r13, r13
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7e4c: d3 94 inc r13
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boot_page_fill((uint16_t)(void*)addrPtr,a);
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addrPtr += 2;
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} while (--ch);
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// Write from programming buffer
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boot_page_write((uint16_t)(void*)address);
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7e4e: a5 e0 ldi r26, 0x05 ; 5
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7e50: ea 2e mov r14, r26
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boot_spm_busy_wait();
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#if defined(RWWSRE)
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// Reenable read access to flash
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boot_rww_enable();
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7e52: f1 e1 ldi r31, 0x11 ; 17
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7e54: ff 2e mov r15, r31
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#endif
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/* Forever loop */
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for (;;) {
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/* get character from UART */
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ch = getch();
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7e56: a4 d0 rcall .+328 ; 0x7fa0 <getch>
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if(ch == STK_GET_PARAMETER) {
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7e58: 81 34 cpi r24, 0x41 ; 65
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7e5a: 21 f4 brne .+8 ; 0x7e64 <main+0x64>
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// GET PARAMETER returns a generic 0x03 reply - enough to keep Avrdude happy
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getNch(1);
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7e5c: 81 e0 ldi r24, 0x01 ; 1
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7e5e: be d0 rcall .+380 ; 0x7fdc <verifySpace+0xc>
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putch(0x03);
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7e60: 83 e0 ldi r24, 0x03 ; 3
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7e62: 24 c0 rjmp .+72 ; 0x7eac <main+0xac>
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}
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else if(ch == STK_SET_DEVICE) {
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7e64: 82 34 cpi r24, 0x42 ; 66
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7e66: 11 f4 brne .+4 ; 0x7e6c <main+0x6c>
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// SET DEVICE is ignored
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getNch(20);
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7e68: 84 e1 ldi r24, 0x14 ; 20
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7e6a: 03 c0 rjmp .+6 ; 0x7e72 <main+0x72>
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}
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else if(ch == STK_SET_DEVICE_EXT) {
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7e6c: 85 34 cpi r24, 0x45 ; 69
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7e6e: 19 f4 brne .+6 ; 0x7e76 <main+0x76>
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// SET DEVICE EXT is ignored
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getNch(5);
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7e70: 85 e0 ldi r24, 0x05 ; 5
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7e72: b4 d0 rcall .+360 ; 0x7fdc <verifySpace+0xc>
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7e74: 8a c0 rjmp .+276 ; 0x7f8a <main+0x18a>
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}
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else if(ch == STK_LOAD_ADDRESS) {
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7e76: 85 35 cpi r24, 0x55 ; 85
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7e78: a1 f4 brne .+40 ; 0x7ea2 <main+0xa2>
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// LOAD ADDRESS
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address = getch();
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7e7a: 92 d0 rcall .+292 ; 0x7fa0 <getch>
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7e7c: 08 2f mov r16, r24
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7e7e: 10 e0 ldi r17, 0x00 ; 0
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7e80: 10 93 01 02 sts 0x0201, r17
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7e84: 00 93 00 02 sts 0x0200, r16
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address = (address & 0xff) | (getch() << 8);
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7e88: 8b d0 rcall .+278 ; 0x7fa0 <getch>
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7e8a: 90 e0 ldi r25, 0x00 ; 0
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7e8c: 98 2f mov r25, r24
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7e8e: 88 27 eor r24, r24
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7e90: 80 2b or r24, r16
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7e92: 91 2b or r25, r17
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address += address; // Convert from word address to byte address
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7e94: 88 0f add r24, r24
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7e96: 99 1f adc r25, r25
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7e98: 90 93 01 02 sts 0x0201, r25
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7e9c: 80 93 00 02 sts 0x0200, r24
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7ea0: 73 c0 rjmp .+230 ; 0x7f88 <main+0x188>
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verifySpace();
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}
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else if(ch == STK_UNIVERSAL) {
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7ea2: 86 35 cpi r24, 0x56 ; 86
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7ea4: 29 f4 brne .+10 ; 0x7eb0 <main+0xb0>
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// UNIVERSAL command is ignored
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getNch(4);
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7ea6: 84 e0 ldi r24, 0x04 ; 4
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7ea8: 99 d0 rcall .+306 ; 0x7fdc <verifySpace+0xc>
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putch(0x00);
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7eaa: 80 e0 ldi r24, 0x00 ; 0
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7eac: 71 d0 rcall .+226 ; 0x7f90 <putch>
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7eae: 6d c0 rjmp .+218 ; 0x7f8a <main+0x18a>
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}
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/* Write memory, length is big endian and is in bytes */
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else if(ch == STK_PROG_PAGE) {
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7eb0: 84 36 cpi r24, 0x64 ; 100
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7eb2: 09 f0 breq .+2 ; 0x7eb6 <main+0xb6>
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7eb4: 43 c0 rjmp .+134 ; 0x7f3c <main+0x13c>
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// PROGRAM PAGE - we support flash programming only, not EEPROM
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uint8_t *bufPtr;
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uint16_t addrPtr;
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getLen();
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7eb6: 7c d0 rcall .+248 ; 0x7fb0 <getLen>
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// Immediately start page erase - this will 4.5ms
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boot_page_erase((uint16_t)(void*)address);
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7eb8: e0 91 00 02 lds r30, 0x0200
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7ebc: f0 91 01 02 lds r31, 0x0201
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7ec0: 83 e0 ldi r24, 0x03 ; 3
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7ec2: 80 93 57 00 sts 0x0057, r24
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7ec6: e8 95 spm
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7ec8: c0 e0 ldi r28, 0x00 ; 0
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7eca: d1 e0 ldi r29, 0x01 ; 1
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// While that is going on, read in page contents
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bufPtr = buff;
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do *bufPtr++ = getch();
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7ecc: 69 d0 rcall .+210 ; 0x7fa0 <getch>
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7ece: 89 93 st Y+, r24
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while (--length);
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7ed0: 80 91 02 02 lds r24, 0x0202
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7ed4: 81 50 subi r24, 0x01 ; 1
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7ed6: 80 93 02 02 sts 0x0202, r24
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7eda: 88 23 and r24, r24
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7edc: b9 f7 brne .-18 ; 0x7ecc <main+0xcc>
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// Read command terminator, start reply
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verifySpace();
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7ede: 78 d0 rcall .+240 ; 0x7fd0 <verifySpace>
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// If only a partial page is to be programmed, the erase might not be complete.
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// So check that here
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boot_spm_busy_wait();
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7ee0: 07 b6 in r0, 0x37 ; 55
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7ee2: 00 fc sbrc r0, 0
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7ee4: fd cf rjmp .-6 ; 0x7ee0 <main+0xe0>
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}
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#endif
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// Copy buffer into programming buffer
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bufPtr = buff;
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addrPtr = (uint16_t)(void*)address;
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7ee6: 40 91 00 02 lds r20, 0x0200
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7eea: 50 91 01 02 lds r21, 0x0201
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7eee: a0 e0 ldi r26, 0x00 ; 0
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7ef0: b1 e0 ldi r27, 0x01 ; 1
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ch = SPM_PAGESIZE / 2;
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do {
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uint16_t a;
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a = *bufPtr++;
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7ef2: 2c 91 ld r18, X
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7ef4: 30 e0 ldi r19, 0x00 ; 0
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a |= (*bufPtr++) << 8;
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7ef6: 11 96 adiw r26, 0x01 ; 1
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7ef8: 8c 91 ld r24, X
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7efa: 11 97 sbiw r26, 0x01 ; 1
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7efc: 90 e0 ldi r25, 0x00 ; 0
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7efe: 98 2f mov r25, r24
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7f00: 88 27 eor r24, r24
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7f02: 82 2b or r24, r18
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7f04: 93 2b or r25, r19
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#ifdef VIRTUAL_BOOT_PARTITION
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#define rstVect (*(uint16_t*)(0x204))
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#define wdtVect (*(uint16_t*)(0x206))
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#endif
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/* main program starts here */
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int main(void) {
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7f06: 12 96 adiw r26, 0x02 ; 2
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ch = SPM_PAGESIZE / 2;
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do {
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uint16_t a;
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a = *bufPtr++;
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a |= (*bufPtr++) << 8;
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boot_page_fill((uint16_t)(void*)addrPtr,a);
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7f08: fa 01 movw r30, r20
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7f0a: 0c 01 movw r0, r24
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7f0c: d0 92 57 00 sts 0x0057, r13
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7f10: e8 95 spm
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7f12: 11 24 eor r1, r1
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addrPtr += 2;
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7f14: 4e 5f subi r20, 0xFE ; 254
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7f16: 5f 4f sbci r21, 0xFF ; 255
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} while (--ch);
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7f18: f1 e0 ldi r31, 0x01 ; 1
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7f1a: a0 38 cpi r26, 0x80 ; 128
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7f1c: bf 07 cpc r27, r31
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7f1e: 49 f7 brne .-46 ; 0x7ef2 <main+0xf2>
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// Write from programming buffer
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boot_page_write((uint16_t)(void*)address);
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7f20: e0 91 00 02 lds r30, 0x0200
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7f24: f0 91 01 02 lds r31, 0x0201
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7f28: e0 92 57 00 sts 0x0057, r14
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7f2c: e8 95 spm
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boot_spm_busy_wait();
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7f2e: 07 b6 in r0, 0x37 ; 55
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7f30: 00 fc sbrc r0, 0
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7f32: fd cf rjmp .-6 ; 0x7f2e <main+0x12e>
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#if defined(RWWSRE)
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// Reenable read access to flash
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boot_rww_enable();
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7f34: f0 92 57 00 sts 0x0057, r15
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7f38: e8 95 spm
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7f3a: 27 c0 rjmp .+78 ; 0x7f8a <main+0x18a>
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#endif
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}
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/* Read memory block mode, length is big endian. */
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else if(ch == STK_READ_PAGE) {
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7f3c: 84 37 cpi r24, 0x74 ; 116
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7f3e: b9 f4 brne .+46 ; 0x7f6e <main+0x16e>
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// READ PAGE - we only read flash
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getLen();
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7f40: 37 d0 rcall .+110 ; 0x7fb0 <getLen>
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verifySpace();
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7f42: 46 d0 rcall .+140 ; 0x7fd0 <verifySpace>
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else ch = pgm_read_byte_near(address);
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address++;
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putch(ch);
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} while (--length);
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#else
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do putch(pgm_read_byte_near(address++));
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7f44: e0 91 00 02 lds r30, 0x0200
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7f48: f0 91 01 02 lds r31, 0x0201
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7f4c: 31 96 adiw r30, 0x01 ; 1
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7f4e: f0 93 01 02 sts 0x0201, r31
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7f52: e0 93 00 02 sts 0x0200, r30
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7f56: 31 97 sbiw r30, 0x01 ; 1
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7f58: e4 91 lpm r30, Z+
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7f5a: 8e 2f mov r24, r30
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7f5c: 19 d0 rcall .+50 ; 0x7f90 <putch>
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while (--length);
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7f5e: 80 91 02 02 lds r24, 0x0202
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7f62: 81 50 subi r24, 0x01 ; 1
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7f64: 80 93 02 02 sts 0x0202, r24
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7f68: 88 23 and r24, r24
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7f6a: 61 f7 brne .-40 ; 0x7f44 <main+0x144>
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7f6c: 0e c0 rjmp .+28 ; 0x7f8a <main+0x18a>
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#endif
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}
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/* Get device signature bytes */
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else if(ch == STK_READ_SIGN) {
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7f6e: 85 37 cpi r24, 0x75 ; 117
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7f70: 39 f4 brne .+14 ; 0x7f80 <main+0x180>
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// READ SIGN - return what Avrdude wants to hear
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verifySpace();
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7f72: 2e d0 rcall .+92 ; 0x7fd0 <verifySpace>
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putch(SIGNATURE_0);
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7f74: 8e e1 ldi r24, 0x1E ; 30
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7f76: 0c d0 rcall .+24 ; 0x7f90 <putch>
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putch(SIGNATURE_1);
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7f78: 85 e9 ldi r24, 0x95 ; 149
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7f7a: 0a d0 rcall .+20 ; 0x7f90 <putch>
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putch(SIGNATURE_2);
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7f7c: 8f e0 ldi r24, 0x0F ; 15
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7f7e: 96 cf rjmp .-212 ; 0x7eac <main+0xac>
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}
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else if (ch == 'Q') {
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7f80: 81 35 cpi r24, 0x51 ; 81
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7f82: 11 f4 brne .+4 ; 0x7f88 <main+0x188>
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// Adaboot no-wait mod
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watchdogConfig(WATCHDOG_16MS);
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7f84: 88 e0 ldi r24, 0x08 ; 8
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7f86: 19 d0 rcall .+50 ; 0x7fba <watchdogConfig>
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verifySpace();
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}
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else {
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// This covers the response to commands like STK_ENTER_PROGMODE
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verifySpace();
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7f88: 23 d0 rcall .+70 ; 0x7fd0 <verifySpace>
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}
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putch(STK_OK);
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7f8a: 80 e1 ldi r24, 0x10 ; 16
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7f8c: 01 d0 rcall .+2 ; 0x7f90 <putch>
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7f8e: 63 cf rjmp .-314 ; 0x7e56 <main+0x56>
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00007f90 <putch>:
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}
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}
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void putch(char ch) {
|
|
7f90: 98 2f mov r25, r24
|
|
#ifndef SOFT_UART
|
|
while (!(UCSR0A & _BV(UDRE0)));
|
|
7f92: 80 91 c0 00 lds r24, 0x00C0
|
|
7f96: 85 ff sbrs r24, 5
|
|
7f98: fc cf rjmp .-8 ; 0x7f92 <putch+0x2>
|
|
UDR0 = ch;
|
|
7f9a: 90 93 c6 00 sts 0x00C6, r25
|
|
[uartBit] "I" (UART_TX_BIT)
|
|
:
|
|
"r25"
|
|
);
|
|
#endif
|
|
}
|
|
7f9e: 08 95 ret
|
|
|
|
00007fa0 <getch>:
|
|
return getch();
|
|
}
|
|
|
|
// Watchdog functions. These are only safe with interrupts turned off.
|
|
void watchdogReset() {
|
|
__asm__ __volatile__ (
|
|
7fa0: a8 95 wdr
|
|
[uartBit] "I" (UART_RX_BIT)
|
|
:
|
|
"r25"
|
|
);
|
|
#else
|
|
while(!(UCSR0A & _BV(RXC0)));
|
|
7fa2: 80 91 c0 00 lds r24, 0x00C0
|
|
7fa6: 87 ff sbrs r24, 7
|
|
7fa8: fc cf rjmp .-8 ; 0x7fa2 <getch+0x2>
|
|
ch = UDR0;
|
|
7faa: 80 91 c6 00 lds r24, 0x00C6
|
|
#ifdef LED_DATA_FLASH
|
|
LED_PIN |= _BV(LED);
|
|
#endif
|
|
|
|
return ch;
|
|
}
|
|
7fae: 08 95 ret
|
|
|
|
00007fb0 <getLen>:
|
|
} while (--count);
|
|
}
|
|
#endif
|
|
|
|
uint8_t getLen() {
|
|
getch();
|
|
7fb0: f7 df rcall .-18 ; 0x7fa0 <getch>
|
|
length = getch();
|
|
7fb2: f6 df rcall .-20 ; 0x7fa0 <getch>
|
|
7fb4: 80 93 02 02 sts 0x0202, r24
|
|
return getch();
|
|
}
|
|
7fb8: f3 cf rjmp .-26 ; 0x7fa0 <getch>
|
|
|
|
00007fba <watchdogConfig>:
|
|
"wdr\n"
|
|
);
|
|
}
|
|
|
|
void watchdogConfig(uint8_t x) {
|
|
WDTCSR = _BV(WDCE) | _BV(WDE);
|
|
7fba: e0 e6 ldi r30, 0x60 ; 96
|
|
7fbc: f0 e0 ldi r31, 0x00 ; 0
|
|
7fbe: 98 e1 ldi r25, 0x18 ; 24
|
|
7fc0: 90 83 st Z, r25
|
|
WDTCSR = x;
|
|
7fc2: 80 83 st Z, r24
|
|
}
|
|
7fc4: 08 95 ret
|
|
|
|
00007fc6 <appStart>:
|
|
|
|
void appStart() {
|
|
watchdogConfig(WATCHDOG_OFF);
|
|
7fc6: 80 e0 ldi r24, 0x00 ; 0
|
|
7fc8: f8 df rcall .-16 ; 0x7fba <watchdogConfig>
|
|
__asm__ __volatile__ (
|
|
7fca: ee 27 eor r30, r30
|
|
7fcc: ff 27 eor r31, r31
|
|
7fce: 09 94 ijmp
|
|
|
|
00007fd0 <verifySpace>:
|
|
do getch(); while (--count);
|
|
verifySpace();
|
|
}
|
|
|
|
void verifySpace() {
|
|
if (getch() != CRC_EOP) appStart();
|
|
7fd0: e7 df rcall .-50 ; 0x7fa0 <getch>
|
|
7fd2: 80 32 cpi r24, 0x20 ; 32
|
|
7fd4: 09 f0 breq .+2 ; 0x7fd8 <verifySpace+0x8>
|
|
7fd6: f7 df rcall .-18 ; 0x7fc6 <appStart>
|
|
putch(STK_INSYNC);
|
|
7fd8: 84 e1 ldi r24, 0x14 ; 20
|
|
}
|
|
7fda: da cf rjmp .-76 ; 0x7f90 <putch>
|
|
::[count] "M" (UART_B_VALUE)
|
|
);
|
|
}
|
|
#endif
|
|
|
|
void getNch(uint8_t count) {
|
|
7fdc: 1f 93 push r17
|
|
7fde: 18 2f mov r17, r24
|
|
|
|
00007fe0 <getNch>:
|
|
do getch(); while (--count);
|
|
7fe0: df df rcall .-66 ; 0x7fa0 <getch>
|
|
7fe2: 11 50 subi r17, 0x01 ; 1
|
|
7fe4: e9 f7 brne .-6 ; 0x7fe0 <getNch>
|
|
verifySpace();
|
|
7fe6: f4 df rcall .-24 ; 0x7fd0 <verifySpace>
|
|
}
|
|
7fe8: 1f 91 pop r17
|
|
7fea: 08 95 ret
|