/**
* Change the dutycycle of the selected channel.
*
* Note: we do channel conversion (+1) for correct logical channel mapping
*
* @param p_pwm p_pwm device
* @param channel channel (0 - 5)
* @param dutycycle wanted dutycycle (in percent)
* @return status_ok if succeeded (otherwise check status.h for details).
*/
status_t PWM_setdutycycle(pwm_t* p_pwm, pwm_channel_t channel, uint8_t dutycycle)
{
status_t status = status_ok;
uint32_t ticks = 0;
if(dutycycle <= 100)
{
ticks = Chip_SCTPWM_GetTicksPerCycle(PWM_SCT);
ticks = ticks / 100;
ticks = ticks * dutycycle;
Chip_SCTPWM_SetDutyCycle(PWM_SCT, channel + 1, ticks); /* we add + 1 because the logic channel is 1 more (we cannot use logic channel 0) */
}
else
{
status = pwm_dutycycle;
}
return status;
}
void AnchoPulsoPWM(int dutyccycle,int index){
/*Funcio */
if((dutyccycle < 50)&&(index==3)){
//Ver esto funcion mayor 50%
LPC_SCT->OUT[3].CLR = (1 << 3); // event 0 and 3 clear OUT1 (red LED)
}
if((dutyccycle >= 50)&&(index==3)) {
LPC_SCT->OUT[3].CLR = (1 << 3) | (1 << 0); // event 0 and 3 clear OUT1 (red LED)
}
/*Dutycycle en porcentaje*/
Chip_SCTPWM_SetDutyCycle(LPC_SCT,index,Chip_SCTPWM_PercentageToTicks(LPC_SCT, dutyccycle));
/***********04/11/2015************/
/*Para que nadie modifique el desfasaje 180*/
/*LPC_SCT->MATCH[0].L = 180; // match on (half) PWM period
LPC_SCT->MATCHREL[0].L = 180;*/
}
/* Example entry point */
int main(void)
{
uint32_t cnt1 = 0, cnt2 = 0;
int led_dp = 0, led_step = 1, out_dp = 0;
/* Generic Initialization */
SystemCoreClockUpdate();
Board_Init();
/* Initialize the SCT as PWM and set frequency */
Chip_SCTPWM_Init(SCT_PWM);
Chip_SCTPWM_SetRate(SCT_PWM, SCT_PWM_RATE);
/* Setup Board specific output pin */
app_setup_pin();
/* Use SCT0_OUT1 pin */
Chip_SCTPWM_SetOutPin(SCT_PWM, SCT_PWM_OUT, SCT_PWM_PIN_OUT);
Chip_SCTPWM_SetOutPin(SCT_PWM, SCT_PWM_LED, SCT_PWM_PIN_LED);
/* Start with 0% duty cycle */
Chip_SCTPWM_SetDutyCycle(SCT_PWM, SCT_PWM_OUT, Chip_SCTPWM_GetTicksPerCycle(SCT_PWM) / 2);
Chip_SCTPWM_SetDutyCycle(SCT_PWM, SCT_PWM_LED, 0);
Chip_SCTPWM_Start(SCT_PWM);
/* Enable SysTick Timer */
SysTick_Config(SystemCoreClock / TICKRATE_HZ);
while (1) {
cnt1++;
cnt2++;
if (cnt1 >= OUT_STEP_CNT) {
out_dp += 10;
if (out_dp > 100) {
out_dp = 0;
}
/* Increase dutycycle by 10% every second */
Chip_SCTPWM_SetDutyCycle(SCT_PWM, SCT_PWM_OUT,
Chip_SCTPWM_PercentageToTicks(SCT_PWM, out_dp));
cnt1 = 0;
}
if (cnt2 >= LED_STEP_CNT) {
led_dp += led_step;
if (led_dp < 0) {
led_dp = 0;
led_step = 1;
}
if (led_dp > 200) {
led_dp = 200;
led_step = -1;
}
/* Increment or Decrement Dutycycle by 0.5% every 10ms */
Chip_SCTPWM_SetDutyCycle(SCT_PWM, SCT_PWM_LED,
Chip_SCTPWM_PercentageToTicks(SCT_PWM, led_dp) / 2);
cnt2 = 0;
}
__WFI();
}
}
void Board_PWM_SetDutyCycle(uint8_t outNumber, uint8_t duty)
{
uint32_t indexCounter = calculatePwmIndexCounterByOutNumber(outNumber);
Chip_SCTPWM_SetDutyCycle(LPC_SCT, indexCounter,Chip_SCTPWM_PercentageToTicks(LPC_SCT, duty));
}
/**
* @param[in] pin Pointer to pin configuration
* @param[in] duty_cycle Duty cycle
*/
void SctSetDutyCycle(sctPin_t * pin, uint8_t duty_cycle){
Chip_SCTPWM_SetDutyCycle(LPC_SCT,sct[pin->id].ch , Chip_SCTPWM_PercentageToTicks(LPC_SCT, duty_cycle));
pin->duty_cycle = duty_cycle;
}
void pwm_set(pwm_id_t id, uint32_t duty_cycle)
{
Chip_SCTPWM_SetDutyCycle(pwm_config[id].sct, pwm_config[id].index, duty_cycle);
return;
}
