85 lines
3.1 KiB
C
85 lines
3.1 KiB
C
/* Includes ----------------------------------------------------------------- */
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#include "led_pwm.h"
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#include "main.h"
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#include "tim.h"
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/* Private define ----------------------------------------------------------- */
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/* Private macro ------------------------------------------------------------ */
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/* Private typedef ---------------------------------------------------------- */
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typedef struct {
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TIM_HandleTypeDef* htim; // 定时器句柄
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uint32_t channel; // 定时器通道
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uint8_t bsp_led_s_flag; //LED状态
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} BSP_LED_Config_t;
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/* Private variables -------------------------------------------------------- */
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BSP_LED_Config_t bsp_led_channel_config[] = {
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[BSP_PWM_LED_R] = { &htim5, TIM_CHANNEL_3 ,2}, // xxx 对应 TIMx 通道x
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[BSP_PWM_LED_G] = { &htim5, TIM_CHANNEL_2 ,2},
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[BSP_PWM_LED_B] = { &htim5, TIM_CHANNEL_1 ,2},
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};
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/* Private function -------------------------------------------------------- */
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int8_t BSP_LED_Start(BSP_LED_Channel_t ch) {
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if(HAL_TIM_PWM_Start(bsp_led_channel_config[ch].htim, bsp_led_channel_config[ch].channel)!=HAL_OK){
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return BSP_ERR;
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}else return BSP_OK;
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}
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/**
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* @brief 失能LED PWM通道
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* @param ch 自定义LED通道
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* @return 成功：BSP_OK 错误：BSP_ERR
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*/
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int8_t BSP_LED_Stop(BSP_LED_Channel_t ch){
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if(HAL_TIM_PWM_Stop(bsp_led_channel_config[ch].htim, bsp_led_channel_config[ch].channel)!=HAL_OK){
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return BSP_ERR;
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}else return BSP_OK;
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}
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/* Exported functions ------------------------------------------------------- */
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/**
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* @brief 设置LED PWM通道
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* @param ch 自定义LED通道
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* @param s LED状态
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* @param duty_cycle 占空比
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* @return 成功：BSP_OK 错误：BSP_ERR
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*/
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int8_t BSP_LED_Set(BSP_LED_Channel_t ch, BSP_LED_Status_t s, float duty_cycle) {
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if (duty_cycle < 0.0f || duty_cycle > 1.0f) return BSP_ERR;
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switch (s) {
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case BSP_LED_ON:
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if (bsp_led_channel_config[ch].bsp_led_s_flag != 1) {
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BSP_LED_Start(ch);
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bsp_led_channel_config[ch].bsp_led_s_flag = 1;
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}
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break;
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case BSP_LED_OFF:
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if (bsp_led_channel_config[ch].bsp_led_s_flag != 2) {
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BSP_LED_Stop(ch);
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bsp_led_channel_config[ch].bsp_led_s_flag = 2;
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}
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break;
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case BSP_LED_TOGGLE:
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if (bsp_led_channel_config[ch].bsp_led_s_flag == 1) {
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BSP_LED_Stop(ch);
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bsp_led_channel_config[ch].bsp_led_s_flag = 2;
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} else if (bsp_led_channel_config[ch].bsp_led_s_flag == 2) {
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BSP_LED_Start(ch);
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bsp_led_channel_config[ch].bsp_led_s_flag = 1;
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} else {
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return BSP_ERR;
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}
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break;
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default:
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return BSP_ERR;
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}
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if(bsp_led_channel_config[ch].bsp_led_s_flag==1)
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{
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uint16_t pulse = duty_cycle * bsp_led_channel_config[ch].htim->Instance->ARR;
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__HAL_TIM_SET_COMPARE(bsp_led_channel_config[ch].htim, bsp_led_channel_config[ch].channel, pulse);
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return BSP_OK;
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}
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return BSP_OK;
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}
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