F.zip_S3C6410蜂鸣电路_s3c6410_s3c6410 蜂鸣器_变频器 程序

#define rGPFCON (*(volatile unsigned *)(0x7F0080A0)) #define rGPFDAT (*(volatile unsigned *)(0x7F0080A4)) #define rGPFPUD (*(volatile unsigned *)(0x7F0080A8)) void msDelay(int time) { volatile unsigned int i,j; for(i = 0; i < 200000; i++) for(j=0; j<time; j++); } void GPIO_Init(void) { rGPFCON = rGPFCON & (~(0x1 << (31))); rGPFCON = rGPFCON | (0x1 << (2*15)); rGPFPUD = rGPFPUD & (~(0x3 << (2*15))) ; rGPFDAT = rGPFDAT | 0x8000; } void BeepOn(void) { rGPFDAT = rGPFDAT | 0x8000; } void BeepOff(void) { rGPFDAT = rGPFDAT & 0x7fff; } void BeepTest(void) { int p; p=100; while (p>0) { BeepOn(); msDelay(p); BeepOff(); msDelay(p); p--; } BeepOff(); } void Main(void) { GPIO_Init(); BeepTest(); }