/**
* @brief Main program
* @param None
* @retval None
*/
int main(void)
{
/*System clock configuration*/
SystemInit();
/* CPIO configuration */
GPIO_Setting();
/* Timer mode configuration for PWM3*/
PrescalerValue = (SystemCoreClock / 1000000) / 10; // Prescale is 2 for 10MHz
TimerModeStructure.PWM_CHn_PR = PrescalerValue - 1;
TimerModeStructure.PWM_CHn_MR = 80000;
TimerModeStructure.PWM_CHn_LR = 100000; // 80% duty cycle
TimerModeStructure.PWM_CHn_UDMR = PWM_CHn_UDMR_UpCount;
TimerModeStructure.PWM_CHn_PDMR = PWM_CHn_PDMR_Periodic;
PWM_TimerModeInit(PWM_CH3, &TimerModeStructure);
/* Timer mode configuration for PWM4*/
TimerModeStructure.PWM_CHn_PR = PrescalerValue - 1;
TimerModeStructure.PWM_CHn_MR = 30000;
TimerModeStructure.PWM_CHn_LR = 100000; // 30% duty cycle
TimerModeStructure.PWM_CHn_UDMR = PWM_CHn_UDMR_UpCount;
TimerModeStructure.PWM_CHn_PDMR = PWM_CHn_PDMR_Periodic;
PWM_TimerModeInit(PWM_CH4, &TimerModeStructure);
/* Timer mode configuration for PWM5*/
TimerModeStructure.PWM_CHn_PR = PrescalerValue - 1;
TimerModeStructure.PWM_CHn_MR = 4294900000UL;
TimerModeStructure.PWM_CHn_LR = 4294800000UL;
TimerModeStructure.PWM_CHn_UDMR = PWM_CHn_UDMR_DownCount;
TimerModeStructure.PWM_CHn_PDMR = PWM_CHn_PDMR_Oneshot;
PWM_TimerModeInit(PWM_CH5, &TimerModeStructure);
/* PWM output enable */
PWM_CtrlPWMOutputEnable(PWM_CH3);
PWM_CtrlPWMOutputEnable(PWM_CH4);
PWM_CtrlPWMOutputEnable(PWM_CH5);
/* PWM start */
PWM_CHn_Start(PWM_CH3);
PWM_CHn_Start(PWM_CH4);
PWM_CHn_Start(PWM_CH5);
while(1);
}
void pwmout_period_us(pwmout_t* obj, int us)
{
PWM_CHn_Stop(obj->PWM_CHx);
// Update the SystemCoreClock variable
SystemCoreClockUpdate();
obj->period = (us * 2) - 1;
obj->pulse = us / 2;
obj->PrescalerValue = (SystemCoreClock / 1000000) / 2;
TimerModeStructure.PWM_CHn_PR = obj->PrescalerValue - 1;
TimerModeStructure.PWM_CHn_MR = obj->pulse;
TimerModeStructure.PWM_CHn_LR = obj->period;
TimerModeStructure.PWM_CHn_UDMR = PWM_CHn_UDMR_UpCount;
TimerModeStructure.PWM_CHn_PDMR = PWM_CHn_PDMR_Periodic;
PWM_TimerModeInit(obj->PWM_CHx, &TimerModeStructure);
PWM_CtrlPWMOutputEnable(obj->PWM_CHx);
}