帮我写一份基于hal库的stm32f407的光敏电阻传感器的代码,利用ADC采样,.c和.h文件分开
时间: 2024-03-26 18:34:35 浏览: 79
好的,以下是基于HAL库的stm32f407的光敏电阻传感器的ADC采样代码,.c和.h文件分开:
.h文件:
```c
#ifndef __PHOTOCELL_H
#define __PHOTOCELL_H
#ifdef __cplusplus
extern "C" {
#endif
#include "main.h"
void PhotoCell_Init(void);
uint16_t PhotoCell_Read(void);
#ifdef __cplusplus
}
#endif
#endif /* __PHOTOCELL_H */
```
.c文件:
```c
#include "photocell.h"
ADC_HandleTypeDef hadc1;
void PhotoCell_Init(void)
{
ADC_ChannelConfTypeDef sConfig = {0};
/* Peripheral clock enable */
__HAL_RCC_ADC1_CLK_ENABLE();
/* ADC1 DMA Init */
/* ADC1 Init */
hadc1.Instance = ADC1;
hadc1.Init.ClockPrescaler = ADC_CLOCK_SYNC_PCLK_DIV2;
hadc1.Init.Resolution = ADC_RESOLUTION_12B;
hadc1.Init.ScanConvMode = DISABLE;
hadc1.Init.ContinuousConvMode = ENABLE;
hadc1.Init.DiscontinuousConvMode = DISABLE;
hadc1.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_NONE;
hadc1.Init.ExternalTrigConv = ADC_SOFTWARE_START;
hadc1.Init.DataAlign = ADC_DATAALIGN_RIGHT;
hadc1.Init.NbrOfConversion = 1;
hadc1.Init.DMAContinuousRequests = ENABLE;
hadc1.Init.EOCSelection = ADC_EOC_SINGLE_CONV;
if (HAL_ADC_Init(&hadc1) != HAL_OK)
{
Error_Handler();
}
/** Configure Regular Channel
*/
sConfig.Channel = ADC_CHANNEL_0;
sConfig.Rank = 1;
sConfig.SingleDiff = ADC_SINGLE_ENDED;
sConfig.SamplingTime = ADC_SAMPLETIME_480CYCLES;
sConfig.OffsetNumber = ADC_OFFSET_NONE;
sConfig.Offset = 0;
if (HAL_ADC_ConfigChannel(&hadc1, &sConfig) != HAL_OK)
{
Error_Handler();
}
}
uint16_t PhotoCell_Read(void)
{
uint16_t adc_value;
HAL_ADC_Start(&hadc1);
HAL_ADC_PollForConversion(&hadc1, 100);
adc_value = HAL_ADC_GetValue(&hadc1);
return adc_value;
}
```
在这个例子中,ADC1被设置为12位分辨率,并且使用了ADC1的通道0。PhotoCell_Init()被用于初始化ADC,并会设置ADC通道0为单端模式、采样时间为480个时钟周期。PhotoCell_Read()函数则会启动ADC并返回读取到的ADC值。
请注意,这个例子中的代码仅供参考,具体实现可能因你的硬件配置而不同。
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