42 lines
1.1 KiB
C
42 lines
1.1 KiB
C
#include "pwm.h"
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#include "tim.h"
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void MX_PWM_Init(void){
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TIM_OC_InitTypeDef sConfigOC = {0};
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// Initialize TIM2 for PWM (safe to call even if TIM2 was previously initialized for OC)
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if (HAL_TIM_PWM_Init(&htim2) != HAL_OK){
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Error_Handler();
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}
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sConfigOC.OCMode = TIM_OCMODE_PWM1;
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sConfigOC.Pulse = 0;
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sConfigOC.OCPolarity = TIM_OCPOLARITY_HIGH;
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sConfigOC.OCFastMode = TIM_OCFAST_DISABLE;
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if (HAL_TIM_PWM_ConfigChannel(&htim2, &sConfigOC, TIM_CHANNEL_1) != HAL_OK){
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Error_Handler();
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}
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}
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void PWM_Start(void){
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HAL_TIM_PWM_Start(&htim2, TIM_CHANNEL_1);
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}
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void PWM_Stop(void){
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HAL_TIM_PWM_Stop(&htim2, TIM_CHANNEL_1);
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}
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void PWM_SetDuty(uint32_t duty){
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// Clamp duty to timer period
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uint32_t period = htim2.Init.Period;
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if(duty > period) duty = period;
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__HAL_TIM_SET_COMPARE(&htim2, TIM_CHANNEL_1, duty);
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}
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void PWM_SetPercent(uint8_t percent){
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if(percent > 100) percent = 100;
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uint32_t period = htim2.Init.Period;
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uint32_t duty = (period * percent) / 100;
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PWM_SetDuty(duty);
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}
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