stm32F401的HAL库adc转换采集温度初始化
时间: 2023-12-10 18:05:58 浏览: 103
可以直接使用HAL库提供的函数进行初始化,例如:
1. 定义ADC_HandleTypeDef结构体
2. 初始化ADC对应的GPIO口和内部参考电压
3. 初始化ADC,并配置采样时间、精度等参数
4. 启动ADC转换,并等待转换完成
5. 读取转换结果,根据公式计算出温度值
需要注意的是,不同型号的MCU可能需要不同的配置参数,具体可以参考相关资料或者厂商提供的样例代码。
相关问题
stm32F401的HAL库adc转换采集温度初始化代码
可以这样编写:
1. 首先要开启ADC时钟,例如:__HAL_RCC_ADC1_CLK_ENABLE();
2. 设置ADC单元,例如:ADC_HandleTypeDef hadc;
hadc.Instance = ADC1;
hadc.Init.ClockPrescaler = ADC_CLOCKPRESCALER_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;
3. 初始化ADC,例如:HAL_ADC_Init(&hadc);
4. 配置转换通道,例如:ADC_ChannelConfTypeDef sConfig;
sConfig.Channel = ADC_CHANNEL_TEMPSENSOR;
sConfig.Rank = 1;
sConfig.SamplingTime = ADC_SAMPLETIME_480CYCLES;
HAL_ADC_ConfigChannel(&hadc, &sConfig);
5. 启动转换,例如:HAL_ADC_Start(&hadc);
6. 等待转换完成,例如:HAL_ADC_PollForConversion(&hadc, 10);
7. 获取转换结果,例如:uint32_t adc_value = HAL_ADC_GetValue(&hadc);
计算温度,例如:
float temp_value = (1.43 - ((float)adc_value / 4095 * 3.3)) / 0.0043 + 25;
(此代码是基于STM32F4的内部温度传感器计算温度,不同芯片的ADC温度计算方法可能不一样,请自行参考芯片数据手册)
希望可以帮到你!
完整写出stm32F401温度adc采集 hal库
以下是stm32F401温度adc采集 hal库的完整代码:
```c
#include "stm32f4xx_hal.h"
ADC_HandleTypeDef hadc1;
void SystemClock_Config(void);
static void MX_GPIO_Init(void);
static void MX_ADC1_Init(void);
int main(void)
{
HAL_Init();
SystemClock_Config();
MX_GPIO_Init();
MX_ADC1_Init();
uint16_t adc_value;
float temperature;
while (1)
{
HAL_ADC_Start(&hadc1);
HAL_ADC_PollForConversion(&hadc1, 1000);
adc_value = HAL_ADC_GetValue(&hadc1);
temperature = ((float)adc_value * 3.3 / 4096.0 - 0.76) / 0.0025 + 25.0;
HAL_Delay(1000);
}
}
void SystemClock_Config(void)
{
RCC_OscInitTypeDef RCC_OscInitStruct = {0};
RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
__HAL_RCC_PWR_CLK_ENABLE();
__HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
RCC_OscInitStruct.HSIState = RCC_HSI_ON;
RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSI;
RCC_OscInitStruct.PLL.PLLM = 16;
RCC_OscInitStruct.PLL.PLLN = 336;
RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV4;
RCC_OscInitStruct.PLL.PLLQ = 7;
if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
{
Error_Handler();
}
RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2;
RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV4;
RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV2;
if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_5) != HAL_OK)
{
Error_Handler();
}
}
static void MX_ADC1_Init(void)
{
ADC_ChannelConfTypeDef sConfig = {0};
__HAL_RCC_ADC1_CLK_ENABLE();
hadc1.Instance = ADC1;
hadc1.Init.ClockPrescaler = ADC_CLOCK_SYNC_PCLK_DIV2;
hadc1.Init.Resolution = ADC_RESOLUTION_12B;
hadc1.Init.ScanConvMode = DISABLE;
hadc1.Init.ContinuousConvMode = DISABLE;
hadc1.Init.DiscontinuousConvMode = DISABLE;
hadc1.Init.NbrOfDiscConversion = 0;
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 = DISABLE;
hadc1.Init.EOCSelection = ADC_EOC_SINGLE_CONV;
if (HAL_ADC_Init(&hadc1) != HAL_OK)
{
Error_Handler();
}
sConfig.Channel = ADC_CHANNEL_TEMPSENSOR;
sConfig.Rank = 1;
sConfig.SamplingTime = ADC_SAMPLETIME_480CYCLES;
if (HAL_ADC_ConfigChannel(&hadc1, &sConfig) != HAL_OK)
{
Error_Handler();
}
}
static void MX_GPIO_Init(void)
{
__HAL_RCC_GPIOA_CLK_ENABLE();
}
void Error_Handler(void)
{
__disable_irq();
while (1)
{
}
}
```
这段代码初始化了ADC1和温度传感器,然后在while循环中读取ADC值并将其转换为温度值,最后使用HAL_Delay函数延迟1秒钟。请注意,此代码仅适用于stm32F401芯片。
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