main.c

来自「博创2410的实验代码」· C语言 代码 · 共 52 行

#include "../inc/drivers.h"
#include "../inc/lib.h"
#include <string.h>
#include <stdio.h>
#pragma import(__use_no_semihosting_swi)  // ensure no functions that use semihosting 
#define ADCCON_FLAG		(0x1<<15)
#define ADCCON_ENABLE_START_BYREAD	(0x1<<1)
#define rADCCON		(*(volatile unsigned *)0x58000000)
#define rADCDAT0	(*(volatile unsigned *)0x5800000C)
#define PRSCVL (49<<6)
#define ADCCON_ENABLE_START (0x1)
#define STDBM (0x0<<2)
#define PRSCEN (0x1<<14)
void  ARMTargetInit(void); 
void init_ADdevice()
{//初始化
	rADCCON=(PRSCVL|ADCCON_ENABLE_START|STDBM|PRSCEN);//set ADC control register
}

int GetADresult(int channel)
{   
	rADCCON=ADCCON_ENABLE_START_BYREAD|(channel<<3)|PRSCEN|PRSCVL;
	hudelay(10);
	while(!(rADCCON&ADCCON_FLAG));//转换结束
	return (0x3ff&rADCDAT0);//返回采样值
}
int main(void)
{
	int i,j;
	float d;
    ARMTargetInit();        // do target (uHAL based ARM system) initialisation 
	init_ADdevice();        //初始化AD
	Uart_Printf(0,"\n");    //换行
   while(1)
	{
		for(i=0; i<=2; i++) //循环采集三路模拟信号
		{//采样0~3路A/D值
		    //for(j=0;j<=1;j++)
			//{
			d=GetADresult(i)*3.3/1023; // 数据 采集，处理
			//}						
            Uart_Printf(0,"a%d=%f\t",i,d);//串口0输出采样结果			
			hudelay(1000);                //延时
		}	
		 Uart_Printf(0,"\r");             //回车
	}
	return 0;
}