#define __dsPIC30F4011__

#include <p30f4011.h>

#define FCY 7372800*2 //one instruction frequency
//constract initial
_FOSC(CSW_FSCM_OFF & XT_PLL8);
_FWDT(WDT_OFF);
_FBORPOR(0x008300); //enable MCLR, PWMPIN=1(controlled by port at device reset),HPOL=1 and LPOL=1 active high output polarity
_FGS(CODE_PROT_OFF);

int main(void)
{
ADPCFG=0xFFFF;

initial_PWM();

while(1);
}

void initial_PWM(void)
{
PTCONbits.PTEN=0; //base timer close
IFS2bits.PWMIF=0; //PWM interrupt flag clear
IFS2bits.FLTAIF=0; //PWM fault interrupt clear
IEC2bits.FLTAIE=0; //disable PWM interrupt
IEC2bits.PWMIE=0; //disable PWM fault

PTCONbits.PTSIDL=1; //PWM halt when idle mode
PTCONbits.PTOPS=0x0; //interrupt 1:1 postscale
PTCONbits.PTCKPS=0x0; //1:1 prescale
PTCONbits.PTMOD=0x0; //operating in a free running mode

PTPERbits.PTPER=0x024D; //PWM time base period register
PDC1=0x024D; //PWM1 50%
PDC2=0x024D; //PWM2 50%

PWMCON1bits.PMOD1=1; //independent PWM 1H 1L output mode
PWMCON1bits.PMOD2=1; //independent PWM 2H 2L output mode
PWMCON1bits.PEN1H=1; //PWM1H enabled for PWM output
PWMCON1bits.PEN1L=1; //PWM1L enabled for PWM output
PWMCON1bits.PEN2H=1; //PWM2H enabled for PWM output
PWMCON1bits.PEN2L=1; //PWM2L enabled for PWM output

PWMCON2bits.SEVOPS=0x0; //special event trigger 1:1 postscale
PWMCON2bits.OSYNC=1; //overrides synchronous PWM time base
PWMCON2bits.UDIS=0; //enable updata duty cycle
PTCONbits.PTEN=1; //base timer open
}


這是我目前的程式
我想控制無刷馬達
請問OVDCON要如何設定
(放在哪個程式段)
才能得到講義上的波形?
(應該是說如何產生截波)
講義我已經下載看過了
都說要在獨立輸出模式
可是試了很久都弄不出來
不知該如何設定
還是我的程式有錯?