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https://gitee.com/dlmu-cone/bf_original_balance_chassis
synced 2026-07-24 03:27:45 +08:00
32 lines
589 B
C
32 lines
589 B
C
#include "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 BuzzerInit()
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{
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HAL_TIM_PWM_Start(&htim4, TIM_CHANNEL_3);
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__HAL_TIM_SetCompare(&htim4, TIM_CHANNEL_3, 0);
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}
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void BuzzerOn()
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{
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static int16_t temp = 4000 ;
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if(temp < 1000)
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{
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BuzzerOff();
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return;
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}
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__HAL_TIM_PRESCALER(&htim4,(int)(temp/1000));
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__HAL_TIM_SetCompare(&htim4, TIM_CHANNEL_3, 10000);
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temp -= 5 ;
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}
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void BuzzerOff(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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