Masakatsu Honda / passion-v2 - Files

pwm.cpp
#include "pwm.hpp"

namespace peripheral{
    PWM::PWM(TIM_HandleTypeDef* htim,uint32_t channel){
        htim_ = htim;
        channel_ = channel;
        arr_ = htim_->Init.Period;
        clock_ = 2*HAL_RCC_GetPCLK1Freq();
        prescaler_ = htim_->Init.Prescaler;
    }
    void PWM::Start(){
        HAL_TIM_PWM_Start(htim_, channel_);
    }

    void PWM::set_duty(float duty){
        duty_ = duty/100;
        if(0 <= duty_ && duty_ <= 1){
            ccr_ = duty_ * (arr_ + 1);
        }else{}
        __HAL_TIM_SET_COMPARE(htim_,channel_,ccr_);
    }

    void PWM::set_freq(uint32_t freq){
        freq_ = freq;
        arr_ = (clock_/(freq_*(prescaler_+1)))-1;
        __HAL_TIM_SET_AUTORELOAD(htim_,arr_);
    }

    void PWM::Stop(){
        HAL_TIM_PWM_Stop(htim_,channel_);
    }
}