[讨论]

基于msp430g2553延时程序

2013-7-8 21:30:39 6650

0 #include "msp430g2553.h" #define uint unsigned int //60us延时，8M的晶振 void delay(uint z) { unsigned int i,j; for(i = 0;i<60;i++) for(j=0;j {;;}; } //1us延时，8M的晶振 void delay(unsigned long t) { while ( --t != 0 ); //延时2*t个机器周期 } void main(void) { WDTCTL = WDTPW + WDTHOLD;// Stop watchdog timer //主系统时钟切换为外部高速晶振 if (CALBC1_8MHZ == 0xFF \|\| CALDCO_8MHZ == 0xFF) while(1);// If calibration constants erased, trap CPU!! // Configure Basic Clock BCSCTL1 = CALBC1_8MHZ;// Set range DCOCTL = CALDCO_8MHZ;// Set DCO step + modulation P1DIR\|=BIT0; for(;;) { P1OUT^=BIT0; // Toggle P1.0 using exclusive-OR delay(50000); } } 0
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