adc_test.c

IARSOURCECODE是基于LPC2478嵌入式软件IAR EWARM V4.42的应用实例代码

/*****************************************************************************
 *   adctest.c:  main C entry file for NXP LPC23xx Family Microprocessors
 *
 *   Copyright(C) 2006, NXP Semiconductor
 *   All rights reserved.
 *
 *   History
 *   2006.08.16  ver 1.00    Prelimnary version, first Release
 *
******************************************************************************/
#include "LPC2468.h"                        /* LPC23xx definitions */
#include "type.h"
#include "target.h"
#include "irq.h"
#include "adc.h"
#include "uart0.h"
#include "timer.h"

extern volatile DWORD ADC0Value[ADC_NUM];
extern volatile DWORD ADC0IntDone;

void UART_print(DWORD Num)          // 将10位数据转为BCD码输出
{
  char tmp[5],rest;
  rest = Num / 0x100;Num = Num % 0x100;
  tmp[0]=(rest > 9)?0x37+rest:0x30+rest;
  rest = Num / 0x10;Num = Num % 0x10;
  tmp[1]=(rest > 9)?0x37+rest:0x30+rest;
  rest = Num ;
  tmp[2]=(rest > 9)?0x37+rest:0x30+rest;
  tmp[3] = 0x20;tmp[4] = '\0';

  UART0_puts(tmp);
}

/*****************************************************************************
**   Main Function  main()
******************************************************************************/
int main (void)
{
    DWORD i;

    TargetResetInit();
    UART0Init(9600);
    enable_timer(0);

    /* Initialize ADC  */
    ADCInit( ADC_CLK );

#if ADC_INTERRUPT_FLAG			/* Interrupt driven */
    for ( i = 0; i < ADC_NUM; i++ )
    {
	    ADC0Read( i );
	    while ( !ADC0IntDone );
	    ADC0IntDone = 0;
    }
#else  					/* Polling */
    while(1)
    {
      for ( i = 0; i < ADC_NUM; i++ )
      {
	    ADC0Value[i] = ADC0Read( i );
            if(i == 0)
            {
              UART0_puts("The value is : ");
              UART0_PrintNum(ADC0Value[i],16);   /* 只采了这一路 */
              UART0_puts("\r\n");
            }
      }

      delayMs(0,1000);
    }

#endif

    return 0;
}

/*****************************************************************************
**                            End Of File
*****************************************************************************/