WinCE ADC获得电池电压-优快云博客

本文详细介绍了如何使用C语言通过ADC接口获取平均电压值，包括ADC配置、初始化、读取数据及计算平均值的过程。

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#include <bsp.h>

volatile S3C2416_ADC_REG *v_pADCregs;
static int Get_Adc(void)
{
	int Buffer = 0;
	unsigned int temp_adccon,temp_adcmux;

	v_pADCregs = (S3C2416_ADC_REG *)OALPAtoVA(S3C2416_BASE_REG_PA_ADC, FALSE);
	

	temp_adccon = v_pADCregs->ADCCON;
	temp_adcmux = v_pADCregs->ACDMUX;

	

	//使用通道1
	v_pADCregs->ACDMUX = v_pADCregs->ACDMUX & ~(0xf) | 0x0<<0;
	//
	//v_pADCregs->ADCCON = (0x1<<14) | (66<<6) | (1<<3) | (0x0<<2) | (0x0<<1) | (0x1<<0);
	v_pADCregs->ADCCON = (0x1<<14) | (66<<6) | (1<<3);

	Delayms(30);
	
	//v_pADCregs->ADCCON |= (0x1<<1);		
	v_pADCregs->ADCCON |= (0x1<<0);				//start ADC
	while (v_pADCregs->ADCCON & 0x1);		//check if enable_start is low
	while (!(v_pADCregs->ADCCON & 0x8000));  //check if EC(End of Conversion)

	Buffer = (int)v_pADCregs->ADCDAT0 & 0xFFF;


	v_pADCregs->ADCCON = temp_adccon;
	v_pADCregs->ACDMUX = temp_adcmux;

	return Buffer;

}

static int Get_Adc_Average(int times)
{
	int i;
	int temp_val = 0;

	for(i=0;i<times;i++)
	{
		temp_val += Get_Adc();
		Delayms(5);
	}
	return temp_val/times;
}

double Battery_Vary_Get(void)
{
	int Battery_Adc;
	double Battery_vary;

	Battery_Adc = Get_Adc_Average(10);

	Battery_vary = (double)Battery_Adc * (3.3/4096);

	return Battery_vary;
}