智能wifi小车-ADC电源监控
分享点智能wifi小车-ADC电源监控，图写完发不出来，看我写的原文：http://www.
STM32CubeMX-ADC配置
我们提供了电池电量检测电路，利用一路ADC进行检测电池电量。我们使用的是PC4口，对应的是ADC1的14通道。
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进入Configuartion，点击ADC1
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进行ADC1配置
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使用DMA
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开启中断
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电压值计算
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我们使用的控制器的ADC为12位精度，基准电压为3.3V。根据采集到的值转换为电压值的计算公式如下：
V=Value*3300/212；
void HAL_ADC_ConvCpltCallback(ADC_HandleTypeDef *hadc)
{
uint16_t battery = 0;
battery = uhADCxConvertedValue * 3300 / 4095;
OLED_Battery(battery);
}
源码
/* Includes ------------------------------------------------------------------*/
#include "adc.h"
#include "gpio.h"
#include "dma.h"
/* USER CODE BEGIN 0 */
extern __IO uint16_t uhADCxConvertedValue;
/* USER CODE END 0 */
ADC_HandleTypeDef hadc1;
DMA_HandleTypeDef hdma_adc1;
/* ADC1 init function */
void MX_ADC1_Init(void)
{
ADC_ChannelConfTypeDef sConfig;
/**Common config
*/
hadc1.Instance = ADC1;
hadc1.Init.ScanConvMode = ADC_SCAN_DISABLE;
hadc1.Init.ContinuousConvMode = DISABLE;
hadc1.Init.DiscontinuousConvMode = DISABLE;
hadc1.Init.ExternalTrigConv = ADC_SOFTWARE_START;
hadc1.Init.DataAlign = ADC_DATAALIGN_RIGHT;
hadc1.Init.NbrOfConversion = 1;
HAL_ADC_Init(&hadc1);
/**Configure Regular Channel
*/
sConfig.Channel = ADC_CHANNEL_14;
sConfig.Rank = 1;
sConfig.SamplingTime = ADC_SAMPLETIME_1CYCLE_5;
HAL_ADC_ConfigChannel(&hadc1, &sConfig);
}
void HAL_ADC_MspInit(ADC_HandleTypeDef* hadc)
{
GPIO_InitTypeDef GPIO_InitStruct;
if(hadc->Instance==ADC1)
{
/* USER CODE BEGIN ADC1_MspInit 0 */
/* USER CODE END ADC1_MspInit 0 */
/* Peripheral clock enable */
__ADC1_CLK_ENABLE();
/**ADC1 GPIO Configuration
PC4 ------> ADC1_IN14
*/
GPIO_InitStruct.Pin = GPIO_PIN_4;
GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;
HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);
/* Peripheral DMA init*/
hdma_adc1.Instance = DMA1_Channel1;
hdma_adc1.Init.Direction = DMA_PERIPH_TO_MEMORY;
hdma_adc1.Init.PeriphInc = DMA_PINC_DISABLE;
hdma_adc1.Init.MemInc = DMA_MINC_ENABLE;
hdma_adc1.Init.PeriphDataAlignment = DMA_PDATAALIGN_WORD;
hdma_adc1.Init.MemDataAlignment = DMA_MDATAALIGN_WORD;
hdma_adc1.Init.Mode = DMA_NORMAL;
hdma_adc1.Init.Priority = DMA_PRIORITY_LOW;
HAL_DMA_Init(&hdma_adc1);
__HAL_LINKDMA(hadc,DMA_Handle,hdma_adc1);
/* Peripheral interrupt init*/
HAL_NVIC_SetPriority(ADC1_2_IRQn, 0, 0);
HAL_NVIC_EnableIRQ(ADC1_2_IRQn);
/* USER CODE BEGIN ADC1_MspInit 1 */
/* USER CODE END ADC1_MspInit 1 */
}
}
void HAL_ADC_MspDeInit(ADC_HandleTypeDef* hadc)
{
if(hadc->Instance==ADC1)
{
/* USER CODE BEGIN ADC1_MspDeInit 0 */
/* USER CODE END ADC1_MspDeInit 0 */
/* Peripheral clock disable */
__ADC1_CLK_DISABLE();
/**ADC1 GPIO Configuration
PC4 ------> ADC1_IN14
*/
HAL_GPIO_DeInit(GPIOC, GPIO_PIN_4);
/* Peripheral DMA DeInit*/
HAL_DMA_DeInit(hadc->DMA_Handle);
/* Peripheral interrupt Deinit*/
HAL_NVIC_DisableIRQ(ADC1_2_IRQn);
}
/* USER CODE BEGIN ADC1_MspDeInit 1 */
/* USER CODE END ADC1_MspDeInit 1 */
}
/* USER CODE BEGIN 1 */
void HAL_ADC_ConvCpltCallback(ADC_HandleTypeDef* hadc)
{
uint16_t battery=0;
battery=uhADCxConvertedValue*3300/4095;
OLED_Battery(battery);
}
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
