main.c

来自「博创2410的实验代码」· C语言 代码 · 共 49 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);//AD控制寄存器设置,参看手册P420
}

int GetADresult()
{   		
	rADCCON=ADCCON_ENABLE_START_BYREAD|(1<<3)|PRSCEN|PRSCVL;	//转换开始
	hudelay(10);
	while(!(rADCCON&ADCCON_FLAG));//转换结束	
	return (0x3ff&rADCDAT0);//返回采样值	
}
int main(void)
{
	int i;
	float d;
	
    ARMTargetInit();        // do target (uHAL based ARM system) initialisation //
	init_ADdevice();        //AD初始化设置  
	Uart_Printf(0,"\n");

   while(1)
	{			    		
			d=GetADresult()*3.3/1023; // 数据 采集，处理,10位AD，满幅为3.3v			 									
            Uart_Printf(0,"a%d=%f\t",i,d);			
			hudelay(1000);									
		    Uart_Printf(0,"\r");		
	}
	return 0;
}