写一个HAL库ADC例程
时间: 2024-02-05 12:04:38 浏览: 30
很抱歉,作为AI语言模型,我无法提供特定的HAL库ADC例程。不过,我可以给你一些参考:
1. 首先,你需要在HAL库中初始化ADC模块。例如:
```c
ADC_HandleTypeDef hadc;
// ...
void HAL_ADC_MspInit(ADC_HandleTypeDef* hadc)
{
GPIO_InitTypeDef GPIO_InitStruct = {0};
if(hadc->Instance==ADC1)
{
/* Peripheral clock enable */
__HAL_RCC_ADC1_CLK_ENABLE();
__HAL_RCC_GPIOA_CLK_ENABLE();
/**ADC1 GPIO Configuration
PA0 ------> ADC1_IN0
*/
GPIO_InitStruct.Pin = GPIO_PIN_0;
GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
}
}
void MX_ADC1_Init(void)
{
ADC_ChannelConfTypeDef sConfig = {0};
hadc.Instance = ADC1;
hadc.Init.ClockPrescaler = ADC_CLOCK_SYNC_PCLK_DIV2;
hadc.Init.Resolution = ADC_RESOLUTION_12B;
hadc.Init.ScanConvMode = DISABLE;
hadc.Init.ContinuousConvMode = DISABLE;
hadc.Init.DiscontinuousConvMode = DISABLE;
hadc.Init.NbrOfDiscConversion = 0;
hadc.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_NONE;
hadc.Init.ExternalTrigConv = ADC_SOFTWARE_START;
hadc.Init.DataAlign = ADC_DATAALIGN_RIGHT;
hadc.Init.NbrOfConversion = 1;
hadc.Init.DMAContinuousRequests = DISABLE;
hadc.Init.EOCSelection = ADC_EOC_SINGLE_CONV;
if (HAL_ADC_Init(&hadc) != HAL_OK)
{
Error_Handler();
}
/**Configure Regular Channel
*/
sConfig.Channel = ADC_CHANNEL_0;
sConfig.Rank = ADC_REGULAR_RANK_1;
sConfig.SingleDiff = ADC_SINGLE_ENDED;
sConfig.SamplingTime = ADC_SAMPLETIME_3CYCLES;
if (HAL_ADC_ConfigChannel(&hadc, &sConfig) != HAL_OK)
{
Error_Handler();
}
}
```
2. 然后,你需要编写一个ADC读取函数,以读取ADC的值。例如:
```c
uint16_t read_adc_value(void)
{
uint16_t adc_value = 0;
HAL_ADC_Start(&hadc);
if (HAL_ADC_PollForConversion(&hadc, 1000) == HAL_OK)
{
adc_value = HAL_ADC_GetValue(&hadc);
}
HAL_ADC_Stop(&hadc);
return adc_value;
}
```
3. 最后,你可以在你的main函数中调用这个读取函数来获取ADC的值,例如:
```c
int main(void)
{
// ...
MX_ADC1_Init();
// ...
while (1)
{
uint16_t adc_value = read_adc_value();
printf("ADC Value: %d\n", adc_value);
HAL_Delay(1000);
}
}
```
这只是一个简单的例程,你可以根据你的需求进行修改和扩展。