luobo2305的博客

led.S #define GPIO_BASE 0x01C20800 #define GPIO_PH_CFG2_BASE (GPIO_BASE + 0x104) #define GPIO_PH_DAT_BASE (GPIO_BASE + 0x10C) .global _start _start: b reset reset: ldr r0, =GP

main.c #include "led.h" static void delay() { unsigned int i = 0; for(i = 0; i 50000; i++); } int main() { led_init(); while(1) { led1_on(); delay();

main.c#include "led.h"static void delay() { unsigned int i = 0; for(i = 0; i < 0xffffff; i++); }int main() { led_init(); while(1) { led1_on(); delay(); led1_of