: static void delay(const uint16_t ms); /* ------------------------------------ M A I N --------------------------------------- */ int main(void) { 8000218: b580 push {r7, lr} 800021a: af00 add r7, sp, #0 \details Disables IRQ interrupts by setting the I-bit in the CPSR. Can only be executed in Privileged modes. */ __STATIC_FORCEINLINE void __disable_irq(void) { __ASM volatile ("cpsid i" : : : "memory"); 800021c: b672 cpsid i } 800021e: bf00 nop /* --- initialization --- */ __disable_irq(); // disable interrupts globally GPIO_init(); 8000220: f000 f83a bl 8000298 __ASM volatile ("cpsie i" : : : "memory"); 8000224: b662 cpsie i } 8000226: bf00 nop /* --- infinite processing loop --- */ while (1) { /* ... add your code to implement the lab assignment ... */ switch (state) { 8000228: 4b1a ldr r3, [pc, #104] @ (8000294 ) 800022a: 681b ldr r3, [r3, #0] 800022c: 2b02 cmp r3, #2 800022e: d01e beq.n 800026e 8000230: 2b02 cmp r3, #2 8000232: dc2c bgt.n 800028e 8000234: 2b00 cmp r3, #0 8000236: d002 beq.n 800023e 8000238: 2b01 cmp r3, #1 800023a: d00e beq.n 800025a GPIOA->ODR |= (1 << 0); // LED0 off delay(WAITTIME); // wait state = 0; break; default: break; 800023c: e027 b.n 800028e GPIOA->ODR &= ~(1 << 0); // LED0 on 800023e: f04f 4390 mov.w r3, #1207959552 @ 0x48000000 8000242: 695b ldr r3, [r3, #20] 8000244: f04f 4290 mov.w r2, #1207959552 @ 0x48000000 8000248: f023 0301 bic.w r3, r3, #1 800024c: 6153 str r3, [r2, #20] state++; 800024e: 4b11 ldr r3, [pc, #68] @ (8000294 ) 8000250: 681b ldr r3, [r3, #0] 8000252: 3301 adds r3, #1 8000254: 4a0f ldr r2, [pc, #60] @ (8000294 ) 8000256: 6013 str r3, [r2, #0] break; 8000258: e01a b.n 8000290 delay(WAITTIME); // wait 800025a: f44f 70fa mov.w r0, #500 @ 0x1f4 800025e: f000 f843 bl 80002e8 state++; 8000262: 4b0c ldr r3, [pc, #48] @ (8000294 ) 8000264: 681b ldr r3, [r3, #0] 8000266: 3301 adds r3, #1 8000268: 4a0a ldr r2, [pc, #40] @ (8000294 ) 800026a: 6013 str r3, [r2, #0] break; 800026c: e010 b.n 8000290 GPIOA->ODR |= (1 << 0); // LED0 off 800026e: f04f 4390 mov.w r3, #1207959552 @ 0x48000000 8000272: 695b ldr r3, [r3, #20] 8000274: f04f 4290 mov.w r2, #1207959552 @ 0x48000000 8000278: f043 0301 orr.w r3, r3, #1 800027c: 6153 str r3, [r2, #20] delay(WAITTIME); // wait 800027e: f44f 70fa mov.w r0, #500 @ 0x1f4 8000282: f000 f831 bl 80002e8 state = 0; 8000286: 4b03 ldr r3, [pc, #12] @ (8000294 ) 8000288: 2200 movs r2, #0 800028a: 601a str r2, [r3, #0] break; 800028c: e000 b.n 8000290 break; 800028e: bf00 nop switch (state) { 8000290: e7ca b.n 8000228 8000292: bf00 nop 8000294: 2000001c .word 0x2000001c 08000298 : * requires: - nothing - * parameters: - none - * returns: - nothing - \* ------------------------------------------------------------------------------------ */ static void GPIO_init(void) { 8000298: b480 push {r7} 800029a: af00 add r7, sp, #0 /* enable port clocks */ RCC->AHB2ENR |= RCC_AHB2ENR_GPIOAEN; // LEDs: A 800029c: 4b11 ldr r3, [pc, #68] @ (80002e4 ) 800029e: 6cdb ldr r3, [r3, #76] @ 0x4c 80002a0: 4a10 ldr r2, [pc, #64] @ (80002e4 ) 80002a2: f043 0301 orr.w r3, r3, #1 80002a6: 64d3 str r3, [r2, #76] @ 0x4c /* --- LEDs --- */ GPIOA->ODR |= MASK_LED_RED; 80002a8: f04f 4390 mov.w r3, #1207959552 @ 0x48000000 80002ac: 695b ldr r3, [r3, #20] 80002ae: f04f 4290 mov.w r2, #1207959552 @ 0x48000000 80002b2: f043 0301 orr.w r3, r3, #1 80002b6: 6153 str r3, [r2, #20] //GPIOA->ODR |= MASK_LED_YELLOW; GPIOA->MODER &= ~(3 << 0); 80002b8: f04f 4390 mov.w r3, #1207959552 @ 0x48000000 80002bc: 681b ldr r3, [r3, #0] 80002be: f04f 4290 mov.w r2, #1207959552 @ 0x48000000 80002c2: f023 0303 bic.w r3, r3, #3 80002c6: 6013 str r3, [r2, #0] GPIOA->MODER |= (1 << 0); // set LED pin to output 80002c8: f04f 4390 mov.w r3, #1207959552 @ 0x48000000 80002cc: 681b ldr r3, [r3, #0] 80002ce: f04f 4290 mov.w r2, #1207959552 @ 0x48000000 80002d2: f043 0301 orr.w r3, r3, #1 80002d6: 6013 str r3, [r2, #0] } 80002d8: bf00 nop 80002da: 46bd mov sp, r7 80002dc: f85d 7b04 ldr.w r7, [sp], #4 80002e0: 4770 bx lr 80002e2: bf00 nop 80002e4: 40021000 .word 0x40021000 080002e8 : * requires: - nothing - * parameters: ms - delay time in milliseconds * returns: - nothing - \* ------------------------------------------------------------------------------------ */ static void delay(const uint16_t ms) { 80002e8: b480 push {r7} 80002ea: b085 sub sp, #20 80002ec: af00 add r7, sp, #0 80002ee: 4603 mov r3, r0 80002f0: 80fb strh r3, [r7, #6] for (uint16_t i = 0; i < ms; ++i) 80002f2: 2300 movs r3, #0 80002f4: 81fb strh r3, [r7, #14] 80002f6: e00e b.n 8000316 { for (uint16_t j = 0; j < LOOPS_PER_MS; ++j) 80002f8: 2300 movs r3, #0 80002fa: 81bb strh r3, [r7, #12] 80002fc: e003 b.n 8000306 { __asm("NOP"); 80002fe: bf00 nop for (uint16_t j = 0; j < LOOPS_PER_MS; ++j) 8000300: 89bb ldrh r3, [r7, #12] 8000302: 3301 adds r3, #1 8000304: 81bb strh r3, [r7, #12] 8000306: 89bb ldrh r3, [r7, #12] 8000308: f240 42db movw r2, #1243 @ 0x4db 800030c: 4293 cmp r3, r2 800030e: d9f6 bls.n 80002fe for (uint16_t i = 0; i < ms; ++i) 8000310: 89fb ldrh r3, [r7, #14] 8000312: 3301 adds r3, #1 8000314: 81fb strh r3, [r7, #14] 8000316: 89fa ldrh r2, [r7, #14] 8000318: 88fb ldrh r3, [r7, #6] 800031a: 429a cmp r2, r3 800031c: d3ec bcc.n 80002f8 } } } 800031e: bf00 nop 8000320: bf00 nop 8000322: 3714 adds r7, #20 8000324: 46bd mov sp, r7 8000326: f85d 7b04 ldr.w r7, [sp], #4 800032a: 4770 bx lr 0800032c : * * Default interrupt handler for core interrupts. * Enables the green and red LED on the STefi Light board. \* ------------------------------------------------------------------------------------ */ void ISR_error(void) { 800032c: b480 push {r7} 800032e: af00 add r7, sp, #0 /* init */ RCC->AHB2ENR |= RCC_AHB2ENR_GPIOAEN; // PA: clock on (LEDs) 8000330: 4b10 ldr r3, [pc, #64] @ (8000374 ) 8000332: 6cdb ldr r3, [r3, #76] @ 0x4c 8000334: 4a0f ldr r2, [pc, #60] @ (8000374 ) 8000336: f043 0301 orr.w r3, r3, #1 800033a: 64d3 str r3, [r2, #76] @ 0x4c GPIOA->ODR |= MASK_LED_ALL; 800033c: f04f 4390 mov.w r3, #1207959552 @ 0x48000000 8000340: 695b ldr r3, [r3, #20] 8000342: f04f 4290 mov.w r2, #1207959552 @ 0x48000000 8000346: f043 030f orr.w r3, r3, #15 800034a: 6153 str r3, [r2, #20] GPIOA->MODER = (GPIOA->MODER & 0xFFFFFF00) | 0x11; 800034c: f04f 4390 mov.w r3, #1207959552 @ 0x48000000 8000350: 681b ldr r3, [r3, #0] 8000352: f023 03ff bic.w r3, r3, #255 @ 0xff 8000356: f04f 4290 mov.w r2, #1207959552 @ 0x48000000 800035a: f043 0311 orr.w r3, r3, #17 800035e: 6013 str r3, [r2, #0] while(1) { /* light up the LEDs permanently */ GPIOA->ODR &= ~(MASK_LED_GREEN | MASK_LED_RED); 8000360: f04f 4390 mov.w r3, #1207959552 @ 0x48000000 8000364: 695b ldr r3, [r3, #20] 8000366: f04f 4290 mov.w r2, #1207959552 @ 0x48000000 800036a: f023 0305 bic.w r3, r3, #5 800036e: 6153 str r3, [r2, #20] 8000370: e7f6 b.n 8000360 8000372: bf00 nop 8000374: 40021000 .word 0x40021000 08000378 : * * Default interrupt handler for non-core interrupts. * Enables the blue and yellow LED on the STefi Light board. \* ------------------------------------------------------------------------------------ */ void ISR_default(void) { 8000378: b480 push {r7} 800037a: af00 add r7, sp, #0 /* init */ RCC->AHB2ENR |= RCC_AHB2ENR_GPIOAEN; // PA: clock on (LEDs) 800037c: 4b10 ldr r3, [pc, #64] @ (80003c0 ) 800037e: 6cdb ldr r3, [r3, #76] @ 0x4c 8000380: 4a0f ldr r2, [pc, #60] @ (80003c0 ) 8000382: f043 0301 orr.w r3, r3, #1 8000386: 64d3 str r3, [r2, #76] @ 0x4c GPIOA->ODR |= MASK_LED_ALL; 8000388: f04f 4390 mov.w r3, #1207959552 @ 0x48000000 800038c: 695b ldr r3, [r3, #20] 800038e: f04f 4290 mov.w r2, #1207959552 @ 0x48000000 8000392: f043 030f orr.w r3, r3, #15 8000396: 6153 str r3, [r2, #20] GPIOA->MODER = (GPIOA->MODER & 0xFFFFFF00) | 0x44; 8000398: f04f 4390 mov.w r3, #1207959552 @ 0x48000000 800039c: 681b ldr r3, [r3, #0] 800039e: f023 03ff bic.w r3, r3, #255 @ 0xff 80003a2: f04f 4290 mov.w r2, #1207959552 @ 0x48000000 80003a6: f043 0344 orr.w r3, r3, #68 @ 0x44 80003aa: 6013 str r3, [r2, #0] while(1) { /* light up the LEDs permanently */ GPIOA->ODR &= ~(MASK_LED_BLUE | MASK_LED_YELLOW); 80003ac: f04f 4390 mov.w r3, #1207959552 @ 0x48000000 80003b0: 695b ldr r3, [r3, #20] 80003b2: f04f 4290 mov.w r2, #1207959552 @ 0x48000000 80003b6: f023 030a bic.w r3, r3, #10 80003ba: 6153 str r3, [r2, #20] 80003bc: e7f6 b.n 80003ac 80003be: bf00 nop 80003c0: 40021000 .word 0x40021000 080003c4 : .section .text.Reset_Handler .weak Reset_Handler .type Reset_Handler, %function Reset_Handler: ldr r0, =_estack 80003c4: 480c ldr r0, [pc, #48] @ (80003f8 ) mov sp, r0 /* set stack pointer */ 80003c6: 4685 mov sp, r0 /* Call the clock system initialization function.*/ // bl SystemInit /* Copy the data segment initializers from flash to SRAM */ ldr r0, =_sdata 80003c8: 480c ldr r0, [pc, #48] @ (80003fc ) ldr r1, =_edata 80003ca: 490d ldr r1, [pc, #52] @ (8000400 ) ldr r2, =_sidata 80003cc: 4a0d ldr r2, [pc, #52] @ (8000404 ) movs r3, #0 80003ce: 2300 movs r3, #0 b LoopCopyDataInit 80003d0: e002 b.n 80003d8 080003d2 : CopyDataInit: ldr r4, [r2, r3] 80003d2: 58d4 ldr r4, [r2, r3] str r4, [r0, r3] 80003d4: 50c4 str r4, [r0, r3] adds r3, r3, #4 80003d6: 3304 adds r3, #4 080003d8 : LoopCopyDataInit: adds r4, r0, r3 80003d8: 18c4 adds r4, r0, r3 cmp r4, r1 80003da: 428c cmp r4, r1 bcc CopyDataInit 80003dc: d3f9 bcc.n 80003d2 /* Zero fill the bss segment. */ ldr r2, =_sbss 80003de: 4a0a ldr r2, [pc, #40] @ (8000408 ) ldr r4, =_ebss 80003e0: 4c0a ldr r4, [pc, #40] @ (800040c ) movs r3, #0 80003e2: 2300 movs r3, #0 b LoopFillZerobss 80003e4: e001 b.n 80003ea 080003e6 : FillZerobss: str r3, [r2] 80003e6: 6013 str r3, [r2, #0] adds r2, r2, #4 80003e8: 3204 adds r2, #4 080003ea : LoopFillZerobss: cmp r2, r4 80003ea: 42a2 cmp r2, r4 bcc FillZerobss 80003ec: d3fb bcc.n 80003e6 /* Call static constructors */ bl __libc_init_array 80003ee: f000 f80f bl 8000410 <__libc_init_array> /* Call the application's entry point.*/ bl main 80003f2: f7ff ff11 bl 8000218

080003f6 : LoopForever: b LoopForever 80003f6: e7fe b.n 80003f6 ldr r0, =_estack 80003f8: 20008000 .word 0x20008000 ldr r0, =_sdata 80003fc: 20000000 .word 0x20000000 ldr r1, =_edata 8000400: 20000000 .word 0x20000000 ldr r2, =_sidata 8000404: 08000478 .word 0x08000478 ldr r2, =_sbss 8000408: 20000000 .word 0x20000000 ldr r4, =_ebss 800040c: 20000020 .word 0x20000020 08000410 <__libc_init_array>: 8000410: b570 push {r4, r5, r6, lr} 8000412: 4d0d ldr r5, [pc, #52] @ (8000448 <__libc_init_array+0x38>) 8000414: 4c0d ldr r4, [pc, #52] @ (800044c <__libc_init_array+0x3c>) 8000416: 1b64 subs r4, r4, r5 8000418: 10a4 asrs r4, r4, #2 800041a: 2600 movs r6, #0 800041c: 42a6 cmp r6, r4 800041e: d109 bne.n 8000434 <__libc_init_array+0x24> 8000420: 4d0b ldr r5, [pc, #44] @ (8000450 <__libc_init_array+0x40>) 8000422: 4c0c ldr r4, [pc, #48] @ (8000454 <__libc_init_array+0x44>) 8000424: f000 f818 bl 8000458 <_init> 8000428: 1b64 subs r4, r4, r5 800042a: 10a4 asrs r4, r4, #2 800042c: 2600 movs r6, #0 800042e: 42a6 cmp r6, r4 8000430: d105 bne.n 800043e <__libc_init_array+0x2e> 8000432: bd70 pop {r4, r5, r6, pc} 8000434: f855 3b04 ldr.w r3, [r5], #4 8000438: 4798 blx r3 800043a: 3601 adds r6, #1 800043c: e7ee b.n 800041c <__libc_init_array+0xc> 800043e: f855 3b04 ldr.w r3, [r5], #4 8000442: 4798 blx r3 8000444: 3601 adds r6, #1 8000446: e7f2 b.n 800042e <__libc_init_array+0x1e> 8000448: 08000470 .word 0x08000470 800044c: 08000470 .word 0x08000470 8000450: 08000470 .word 0x08000470 8000454: 08000474 .word 0x08000474 08000458 <_init>: 8000458: b5f8 push {r3, r4, r5, r6, r7, lr} 800045a: bf00 nop 800045c: bcf8 pop {r3, r4, r5, r6, r7} 800045e: bc08 pop {r3} 8000460: 469e mov lr, r3 8000462: 4770 bx lr 08000464 <_fini>: 8000464: b5f8 push {r3, r4, r5, r6, r7, lr} 8000466: bf00 nop 8000468: bcf8 pop {r3, r4, r5, r6, r7} 800046a: bc08 pop {r3} 800046c: 469e mov lr, r3 800046e: 4770 bx lr