STM8 gets voltage value-EEWORLD

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STM8 gets voltage value

(1) Port definition

static void ADC_POWER_Config()

{

/* Init GPIO for ADC1 */

GPIO_Init(GPIOB, GPIO_PIN_2, GPIO_MODE_IN_FL_NO_IT); //Variable resistor

ADC1_DeInit();

ADC1_Init(ADC1_CONVERSIONMODE_SINGLE, ADC1_CHANNEL_2, ADC1_PRESSEL_FCPU_D2, ADC1_EXTTRIG_TIM, DISABLE, ADC1_ALIGN_RIGHT, ADC1_SCHMITTTRIG_CHANNEL0, ENABLE);

ADC1_Cmd(ENABLE);

}

(2) Obtain the voltage value (here the voltage value is collected five times and the average value is taken)

#define BATTERY_CHECK_COUNT_PER_COLLECT 5 //Number of times each collection

u16 Get_ADC_POWER_Value(void)

{

u16 nBattery_Check_Value = 0;

u16 nNum = 0;

for(nNum = 0; nNum < BATTERY_CHECK_COUNT_PER_COLLECT; nNum++) // Collect BATTERY_CHECK_COUNT_PER_COLLECT times and accumulate the collected power values

{

ADC1_StartConversion(); //Start conversion

nBattery_Check_Value += ADC1_GetConversionValue(); //Accumulate and read the conversion value of adc

}

nBattery_Check_Value = nBattery_Check_Value/(BATTERY_CHECK_COUNT_PER_COLLECT*10); //Calculate the average power

return nBattery_Check_Value;

}

(3) main function

void main(void)

{

ADC_POWER_Config();

u16 nBattery_Check_Value2 = 0;

nBattery_Check_Value2 = Get_ADC_POWER_Value(); //Read the power

printf("nBattery_Check_Value2 = %d\n",nBattery_Check_Value2);

}

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