【iCore1S 雙核心板_ARM】例程八：ADC實驗——電源監控

實驗原理：

　　STM32內部整合三個12位ADC，iCore1S的所有電源經過

電阻分壓或者直接接入STM32的ADC的輸出通道內，輸入電流

經過高階電流檢測晶片ZXCT1009F輸入到ADC的輸入通道內，

從而實現電源監控功能。　　　

實驗現象：

　　iCore1S雙核心板紅色LED常亮，串列埠向終端輸出電源監

控的資料。

核心程式碼：

int main(void)
{

  /* USER CODE BEGIN 1 */
    int i;
  /* USER CODE END 1 */

  /* MCU Configuration----------------------------------------------------------*/

  /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
  HAL_Init();//ÍâÉè³õʼ»¯

  /* USER CODE BEGIN Init */

  /* USER CODE END Init */

  /* Configure the system clock */
  SystemClock_Config();

  /* USER CODE BEGIN SysInit */

  /* USER CODE END SysInit */

  /* Initialize all configured peripherals */
  MX_GPIO_Init();    
  MX_ADC3_Init();
  MX_USART1_UART_Init();

  /* USER CODE BEGIN 2 */
    LED_RED_ON;                                              
    
    usart1.printf("\x0c");                                   
        
    usart1.printf("\033[1;32;40m");                         

    usart1.printf("\r\n\r\nhello! I am iCore1S!\r\n\r\n\r\n");

  /* USER CODE END 2 */

  /* Infinite loop */
  /* USER CODE BEGIN WHILE */
  while (1)
  {
  /* USER CODE END WHILE */
        for(i = 0;i < 100000;i++);
        
        //ADC採集
        for(i = 0;i < 5;i++){
            adc.read(i);
        }
        
        usart1.printf(" [V] %4.2fV, ",adc.value[0] * 6);
        usart1.printf("[I] %3.0fmA , ",adc.value[1] / 2* 1000.);
        usart1.printf("[1.2V] %4.2fV, ",adc.value[2]);
        usart1.printf("[3.3V] %4.2fV, ",adc.value[3] * 2);
        usart1.printf("[2.5V] %4.2fV\r",adc.value[4] * 2);        

  /* USER CODE BEGIN 3 */

  }
  /* USER CODE END 3 */

}

static int read_adc(int channel)
{
    int i,k;
    unsigned long int temp[20] = {0};
    unsigned long int value;
    unsigned short int data[100];
    ADC_ChannelConfTypeDef channel_config;
    unsigned char channel_remap[5] = {ADC_CHANNEL_4,ADC_CHANNEL_5,ADC_CHANNEL_6,ADC_CHANNEL_7,ADC_CHANNEL_8};

    channel_config.Channel = channel_remap[channel];
    channel_config.Rank = 1;
    channel_config.SamplingTime = ADC_SAMPLETIME_239CYCLES_5;

    for(k = 0;k < 20;k++){
        for(i = 0;i < 100;i++){
    
            HAL_ADC_ConfigChannel(&hadc3,&channel_config);
            HAL_ADC_Start(&hadc3);
            
            while(!__HAL_ADC_GET_FLAG(&hadc3,ADC_FLAG_EOC));
            data[i] = HAL_ADC_GetValue(&hadc3);
        }
        
        sort(data,100);

        for(i = 40;i < 60;i++){
            temp[k] += data[i];
        }

        temp[k] = temp[k] / 20;
    }

    value = 0;
    for(k = 0;k < 20;k++){
        value += temp[k]; 
    }
    value /= 20;

    adc.value[channel] = value * ADC_REF / 4096; 

    return value;
}

原始碼下載連結：

連結：http://pan.baidu.com/s/1eRScqK6 密碼：0tmn