pwm_init.c

TI 集成高性能24位A/D转换器的8052 核心单片机MSC1210 PWM发生器代码。

// PWM Init Low
#include <REG1210.H>
#define OneUsConst	(2-1)
sbit p33=P3^3;
void main(void)
{ char i;
	PDCON &= 0x0ed;	//turn on tone gen & sys timer
	USEC = OneUsConst;
	p33=1;			// turn on P3.3 
	//Init PWM to output low
	PWMCON=0;		// select PWMPeriod
	PWM=5;			// Set PWMPeriod
	PWMCON=0x10;	// select PWMDuty	
	PWM=0;
	PWMCON=0x09;	// Enable PWM
	for (i=0;i<10;i++){;}
	PWMCON=0x19;	// select PWMDuty	
	PWM=4;
	PWMCON=0x09;		// Enable PWM
	while(1) {} 
}