106 lines
3.0 KiB
C
106 lines
3.0 KiB
C
/* Includes ----------------------------------------------------------------- */
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#include "bsp\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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/* Private variables -------------------------------------------------------- */
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/* Private function -------------------------------------------------------- */
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/* Exported functions ------------------------------------------------------- */
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int8_t BSP_PWM_Start(BSP_PWM_Channel_t ch) {
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switch (ch) {
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case BSP_PWM_IMU_HEAT:
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HAL_TIM_PWM_Start(&htim10, TIM_CHANNEL_1);
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break;
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case BSP_PWM_BUZZER:
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HAL_TIM_PWM_Start(&htim4, TIM_CHANNEL_3);
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break;
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}
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return BSP_OK;
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}
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/*PWM 占空比设置函数 duty_cycle(0-1)*/
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int8_t BSP_PWM_Set(BSP_PWM_Channel_t ch, float duty_cycle) {
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if (duty_cycle < 0.0f) duty_cycle = 0.f;
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uint16_t pulse;
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/* 通过PWM通道对应定时器重载值和给定占空比，计算PWM周期值 */
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switch (ch) {
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case BSP_PWM_IMU_HEAT:
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pulse = (uint16_t)(duty_cycle * (float)__HAL_TIM_GET_AUTORELOAD(&htim10));
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break;
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case BSP_PWM_BUZZER:
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pulse = (uint16_t)(duty_cycle * (float)__HAL_TIM_GET_AUTORELOAD(&htim4));
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break;
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}
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if (pulse > 0) {
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switch (ch) {
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case BSP_PWM_IMU_HEAT:
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__HAL_TIM_SET_COMPARE(&htim10, TIM_CHANNEL_1, pulse);
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break;
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case BSP_PWM_BUZZER:
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__HAL_TIM_SET_COMPARE(&htim4, TIM_CHANNEL_3, pulse);
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break;
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}
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}
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else {
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// BSP_PWM_Stop(ch);
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}
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return BSP_OK;
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}
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int8_t BSP_PWM_Stop(BSP_PWM_Channel_t ch) {
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switch (ch) {
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case BSP_PWM_IMU_HEAT:
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HAL_TIM_PWM_Stop(&htim10, TIM_CHANNEL_1);
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break;
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case BSP_PWM_BUZZER:
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HAL_TIM_PWM_Stop(&htim4, TIM_CHANNEL_3);
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break;
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}
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//关闭加热器，防止淫威定时器残留而误触发，防止加热器异常工作
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HAL_GPIO_WritePin(IMU_HEAT_PWM_GPIO_Port, IMU_HEAT_PWM_Pin, GPIO_PIN_RESET);
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return BSP_OK;
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}
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//蜂鸣器初始化
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void Buzzer_Init(Buzzer_t* ctrl,uint16_t beep_duration,uint16_t silent_duration,float duty_cycle){
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ctrl->timer = 0;
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ctrl->state = false;
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ctrl->beep_duration = beep_duration;
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ctrl->silent_duration = silent_duration;
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ctrl->duty_cycle = duty_cycle;
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}
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//蜂鸣器控制函数,间断鸣叫
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void Buzzer_Control(Buzzer_t* ctrl, bool condition) {
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if (condition) {
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// 鸣叫模式
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if (HAL_GetTick() - ctrl->timer >= (ctrl->state ? ctrl->beep_duration : ctrl->silent_duration)) {
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ctrl->state = !ctrl->state;
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ctrl->timer = HAL_GetTick();
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if (ctrl->state) {
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BSP_PWM_Start(BSP_PWM_BUZZER);
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BSP_PWM_Set(BSP_PWM_BUZZER, ctrl->duty_cycle);
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}
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else {
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BSP_PWM_Stop(BSP_PWM_BUZZER);
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}
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}
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}
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else {
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// 停止鸣叫
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ctrl->state = false;
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BSP_PWM_Stop(BSP_PWM_BUZZER);
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}
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}
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