#include "SH79f1615.h"
#include "main.h"
static data U16 u16_period_cnt;
static data U16 u16_duty_cnt;
static data U8 u8pwm_INT_status;
void Pwm_Isr(void) interrupt 12 using 1
{
u8pwm_INT_status = PWMINTF;
if(PWMZIF)
{
PWMZIF = 0;
PWMRLDEN = 0x55;
if(PTCON == 0x10)
{
//PWMP_16 = PWM_PERIOD;
PTCON |= 0x02; //0x12
}
else
{
PTCON &= 0xFD; //0x10
}
#if 0
if(PWMP_16 == PWM_PERIOD)
{
PWMP_16 = u16_period_cnt << 1;
//PTCON &= 0xFD; //0x10
PTCON |= 0x02; //0x12
}
else
{
PWMP_16 = PWM_PERIOD;
//PTCON |= 0x02; //0x12
PTCON &= 0xFD; //0x10
}
#endif
PWMRLDEN = 0xAA;
}
else if(PWMPIF)
{
PWMPIF = 0;
}
}
void System_Initial()
{
CLKCON=0x00;
EA=1;
IEN1=0x20;
}
void Pwm_Initial()
{
u16_period_cnt = PWM_PERIOD;
u16_duty_cnt = u16_period_cnt >> 1;
PWMRLDEN=0x55; //enable PWM protect register
PWMOE=0x3f; //IO set as PWM output
PTCON=0x10; //PWM center mode //post-conter 1/4
PWMCON1=0x00; //PWM
PWMP_16 = u16_period_cnt; //PWM period 6000sysclock
PWM0D_16=0; //PWM0 duty 0sysclock
PWM1D_16 = u16_duty_cnt; //PWM1 duty 1000sysclock
PWM2D_16=3000; //PWM2 duty 3000sysclock
PWMINTEN=0xc0; //PWMPIE,PWMZIE
PWMOE|=0x80; //enable PWM clock
PWMRLDEN=0xaa; //load value to register
}
void main()
{
System_Initial();
Pwm_Initial();
while(1);
}
