华清远见cortex-a8中led跑马灯效果
#include "s5pc100.h" #include "uart.h" int main() { int i; GPG3.GPG3CON = 0X1111; int mod=4; while(1){ GPG3.GPG3DAT = (0x1<<mod);//移位操作 mod=(mod+1)%4; for(i = 0; i <= 100000; i++); GPG3.GPG3DAT = 0x0; for(i = 0; i <= 100000; i++); } return 0; }