26 lines
522 B
C
26 lines
522 B
C
#include "bsp_buzzer.h"
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#include "main.h"
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extern TIM_HandleTypeDef htim4;
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static uint8_t tmp_warning_level=0;
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void buzzer_init()
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{
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HAL_TIM_PWM_Start(&htim4,TIM_CHANNEL_3);
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}
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void buzzer_on(uint16_t psc, uint16_t pwm,uint8_t level)
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{
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if(level>tmp_warning_level)
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{
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tmp_warning_level=level;
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__HAL_TIM_PRESCALER(&htim4, psc);
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__HAL_TIM_SetCompare(&htim4, TIM_CHANNEL_3, pwm);
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}
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}
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void buzzer_off(void)
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{
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__HAL_TIM_SetCompare(&htim4, TIM_CHANNEL_3, 0);
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tmp_warning_level=0;
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}
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