SyncMOS 59R PWM 源码
#include "OB59R16A5C.h"
#include "PWM.h"
#define PWM_VECTOR 8 //PWM Interrupt Vevtor
#define d_PWMCS 0x00 //PWMCS[2:0] (PWM clock select 0~7)
#define d_PWMXEN 0x01 //PWM Channel Enable (0~F)
#define d_PWMP0 0x00 //PWM0 Channel idle polarity select
#define d_PWMP1 0x00 //PWM1 Channel idle polarity select
#define d_PWMP2 0x00 //PWM2 Channel idle polarity select
#define d_PWMP3 0x00 //PWM3 Channel idle polarity select
#define d_PWMIE 0x00 //PWM Interrupt Enable bit
#define d_P2PWM 0x02 //PWM channel on P2/P4 select
unsigned int PWMMD = 0x03FF; //PWMMD[9:0]=Period (PWM Max Data Register 0~1023)
unsigned int PWMD0 = 0x0200; //PWMD0[9:0]=Duty (PWM Channel 0 Data Register 0~1023)
unsigned int PWMD1 = 0x00; //PWMD1[9:0]=Duty (PWM Channel 1 Data Register 0~1023)
unsigned int PWMD2 = 0x00; //PWMD2[9:0]=Duty (PWM Channel 2 Data Register 0~1023)
unsigned int PWMD3 = 0x00; //PWMD3[9:0]=Duty (PWM Channel 3 Data Register 0~1023)
void PWM_initialize(void) //Initialize PWM
{
EA = 0; //Disable All Interrupt Function
AUX = AUX | (d_P2PWM); //Set PWM channel on P2/P4
IEPWM = (d_PWMIE); //Enable PWM Interrupt Function
PWMMDH = PWMMD >> 8;
PWMMDL = PWMMD;
EA = 1; //Enable All Interrupt
}
void PWM_Output(unsigned int PWMD0,unsigned int PWMD1,
unsigned int PWMD2,unsigned int PWMD3) //PWM Output Set
{
PWMD0H = (PWMD0>>8) | (d_PWMP0<<7);
PWMD0L = (PWMD0);
PWMD1H = (PWMD1>>8) | (d_PWMP1<<7);
PWMD1L = (PWMD1);
PWMD2H = (PWMD2>>8) | (d_PWMP2<<7);
PWMD2L = (PWMD2);
PWMD3H = (PWMD3>>8) | (d_PWMP3<<7);
PWMD3L = (PWMD3);
PWMC = PWMC|(d_PWMCS<<5)|(d_PWMXEN);
}
void PWM_Disable(void)
{
IEPWM = 0; //Disable PWM Interrupt
PWMC = 0; //Disable PWM Function
}
void PWM_ISR(void) interrupt PWM_VECTOR //PWM Interrupt Subroutine
{
while(PWMIF)
{
PWMIF = 0; //Clear PWM Flag
}
}
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