From 83cf83d37790889e5bb3ebb365e8e536814a6256 Mon Sep 17 00:00:00 2001
From: Wenxue <wenxue.guo@avnet.com>
Date: Tue, 02 Sep 2025 09:42:34 +0800
Subject: [PATCH] 定时器和蜂鸣器程序
---
Core/Src/board/miscdev.c | 84 ++++++++++++++++++++++++++++++++++++++++++
1 files changed, 84 insertions(+), 0 deletions(-)
diff --git a/Core/Src/board/miscdev.c b/Core/Src/board/miscdev.c
index f6e592f..f5f96c5 100644
--- a/Core/Src/board/miscdev.c
+++ b/Core/Src/board/miscdev.c
@@ -180,3 +180,87 @@
HAL_UART_Transmit(&huart1, (uint8_t *)&ch, 1, 0xFFFF);
return ch;
}
+
+/*
+ *+----------------------------+
+ *| ADC noisy & lux sensor API |
+ *+----------------------------+
+ */
+
+#include "adc.h"
+int adc_sample_lux_noisy(uint32_t *lux, uint32_t *noisy)
+{
+ uint8_t i;
+ uint32_t timeout = 0xffffff;
+
+ for(i=0; i<ADCCHN_MAX; i++)
+ {
+ HAL_ADC_Start(&hadc1);
+
+ HAL_ADC_PollForConversion(&hadc1, timeout);
+
+ if( ADCCHN_NOISY == i )
+ {
+ *noisy = HAL_ADC_GetValue(&hadc1);
+ }
+ else if( ADCCHN_LUX == i )
+ {
+ *lux = HAL_ADC_GetValue(&hadc1);
+ }
+
+ HAL_Delay(10);
+ }
+
+ HAL_ADC_Stop(&hadc1);
+
+ return 0;
+}
+
+/*
+ *+----------------------------+
+ *| Timer Buzzer/delay API |
+ *+----------------------------+
+ */
+#include "tim.h"
+
+/* Max to 60000 us */
+void udelay(uint16_t us)
+{
+ uint16_t differ = 60000-us;
+
+ HAL_TIM_Base_Start(&htim6);
+
+ __HAL_TIM_SET_COUNTER(&htim6, differ);
+
+ while( differ < 60000 )
+ {
+ differ=__HAL_TIM_GET_COUNTER(&htim6);
+ }
+
+ HAL_TIM_Base_Stop(&htim6);
+}
+
+
+void beep_start(uint16_t times, uint16_t interval)
+{
+ while( times-- )
+ {
+ /* Start buzzer */
+ if (HAL_TIM_PWM_Start(&htim1, TIM_CHANNEL_4) != HAL_OK)
+ {
+ /* Starting Error */
+ Error_Handler();
+ }
+
+ HAL_Delay(interval);
+
+ /* Stop buzzer */
+ if (HAL_TIM_PWM_Stop(&htim1, TIM_CHANNEL_4) != HAL_OK)
+ {
+ /* Starting Error */
+ Error_Handler();
+ }
+
+ HAL_Delay(interval);
+ }
+}
--
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