LPC810 >> Assembly
Button
參考資訊：
1. pdf
2. lpc810
預設PIO0_2是SWDIO
DIR
SET
CLR
main.s
.cpu cortex-m0 .thumb .equ PINENABLE0, 0x4000c1c0 .equ GPIO_DIR0, 0xa0002000 .equ GPIO_PIN0, 0xa0002100 .equ GPIO_SET0, 0xa0002200 .equ GPIO_CLR0, 0xa0002280 .equ BIT1, 1 .equ BIT2, 2 .thumb_func .global _start _start: .word 0x10000400 @ stacktop .word reset @ reset .word hang @ nmi .word hang @ hardfault .word hang @ reserved .word hang @ reserved .word hang @ reserved .word hang @ reserved .word hang @ reserved .word hang @ reserved .word hang @ reserved .word hang @ svcall .word hang @ reserved .word hang @ reserved .word hang @ pendsv .word hang @ systick .thumb_func reset: ldr r0, =PINENABLE0 ldr r1, =0xffffffff str r1, [r0] ldr r0, =GPIO_DIR0 ldr r1, =(1 << BIT2) str r1, [r0] loop: ldr r0, =GPIO_PIN0 ldr r1, [r0] lsl r1, r1, #1 str r1, [r0] b loop hang: b . .end
完成
