unsigned char PWM_DutyCycle(int channel, int freq)
{
uint32 pwmlen;
uint16 pwmh_high;
#if 0
//uiPWMH_High: mul*10
if (uiPWMH_High > 1000)
return 1; // Error
#else
if (uiPWMH_High > freq){
uiPWMH_High = freq;
}
#endif
//Note that
//鈥� Except for LCOMP, all other bits of PWMCON0 register can be changed
//only when PWMEN is low.
//鈥� When LCOMP is written with Value 1, it stays at that value until
//the new value is loaded in the compare registers for all the channels.
pwm_output_disable();
#if 0
pwmlen = static_cast<uint32>(8000000)/freq - 1;
pwmh_high = (uint16)((pwmlen*uiPWMH_High)/1000);
#else
pwmlen = freq;
pwmh_high = uiPWMH_High;
#endif
PwmTime(iPair, pwmlen, pwmh_high, 0);
PwmLoad(PWMCON0_LCOMP_EN);
pwm_output_enable();
return 0;
}
void pwm_config(void)
{
pwm_output_disable();
Periodo_ticks = pwm_period_calculation(F_SAMP);
pwm1_config(); //pulsos disparo
pwm2_config(); //pulsos disparo
pwm3_config();
pwm4_config(); //DAC pwm
pwm5_config(); //Gera sinal CNVST para iniciar conversao do AD7634
InitEPwm1Gpio();
InitEPwm2Gpio();
InitEPwm3Gpio();
InitEPwm4Gpio();
InitEPwm5Gpio();
pwm_mep_sfo_init();
}
unsigned char PWM_Freq(int channel, uint16 freq)
{
int iPair;
uint16 duty_cycle;
uint16 old_freq;
PWM_ParamGet(channel, &old_freq, &duty_cycle, &iPair);
if (freq != old_freq){
if (duty_cycle > freq){
duty_cycle = freq;
}
pwm_output_disable();
PwmTime(iPair, freq, duty_cycle, 1);
pwm_output_enable();
}
return 0;
}
void drive_halt(void)
{
pwm_output_disable();
sine_reset();
}
