大神们帮我看看这个程序哪里出错了

只看该作者 · 2015-11-22 21:16

用的C8051F410单片机，只用AD采入几个数值计算一下然后DA输出。之前用的好好的，然后突然出错了。。。。。太菜了，照着示例程序编写的，找不出毛病啊，目前就是只让他输出一个AD的数值，结果一直在波动，用两个电位器和示波器检查发现第二个AD端口的电压信号影响了第一个采值，大家能帮我看看哪里出错了吗，拜谢。
#include <c8051f410.h>                // SFR declarations
#include <stdio.h>

int x[12];

int y ;

sfr16 TMR2RL = 0xca;                // Timer2 reload value
sfr16 TMR2    = 0xcc;                // Timer2 counter
sfr16 ADC0    = 0xbd;                // ADC0 result
sfr16 IDA0    = 0x96;                // IDA0 high and low bytes

#define SYSCLK    24500000       // SYSCLK frequency in Hz
#define BAUDRATE    115200          // Baud rate of UART in bps

sbit PWM_OUT = P1^7;

void SYSCLK_Init (void);
void PORT_Init (void);

void ADC0_Init(int channel);
void DAC0_Init(void) ;
void DelayUs(unsigned int );
void main (void)
{
PCA0MD &= ~0x40; // WDTE = 0 关闭看门狗，上电默认打开
PORT_Init ();    // Initialize crossbar and GPIO
DAC0_Init();
   EA=1;
   while(1)
   {
   PWM_OUT=1;
   DelayUs(56);

   ADC0_Init(0x11);
   x[0] = ADC0;
   ADC0_Init(0x10);                //set p2.1 to adc channel
   x[1] = ADC0;
   ADC0_Init(0x11);
   x[2] = ADC0;
   ADC0_Init(0x10);                //set p2.1 to adc channel
   x[3] = ADC0;

   ADC0_Init(0x11);
   x[4] = ADC0;
   ADC0_Init(0x10);                //set p2.1 to adc channel
   x[5] = ADC0;

   DelayUs(56);

   PWM_OUT=0;

   DelayUs(56);
   ADC0_Init(0x11);
   x[6] = ADC0;
   ADC0_Init(0x10);                //set p2.1 to adc channel
   x[7] = ADC0;

   ADC0_Init(0x11);
   x[8] = ADC0;
   ADC0_Init(0x10);                //set p2.1 to adc channel
   x[9] = ADC0;

   ADC0_Init(0x11);
   x[10] = ADC0;
   ADC0_Init(0x10);                //set p2.1 to adc channel
   x[11] = ADC0;

   DelayUs(500);

   IDA0=x[0]-x[1];
   }

}

void SYSCLK_Init (void)
{
OSCICN = 0x87;                   // configure internal oscillator for
                                    // 24.5MHz
RSTSRC = 0x04;                   // enable missing clock detector
}

void PORT_Init (void)
{
P0MDIN = 0xFE;                // Configure P0.0  to analog
P0SKIP = 0x01;                // Skip P0.0 on the crossbar
XBR1    = 0x40;                // Enable Crossbar
P2MDIN  = 0xFC;    // set P2.0 P2.1as an analog input
P2SKIP  = 0x03;                   // skip P2.0 P2.1pin
P1MDOUT = 0x8C;                   // Set LED to push-pull

}

void ADC0_Init (int  channel)
{
ADC0TK = 0x04;
ADC0CF = 0x30;
REF0CN = 0x1b;
ADC0MX = channel;
  ADC0CN = 0x00;
BURSTEN = 1;
AD0EN = 1;
      AD0INT = 1;
   AD0BUSY = 1;
   while(AD0INT == 0);
}

void DAC0_Init(void)
{
REF0CN = 0x1b;
IDA0CN = 0xF7;                   //
}

void delayUs(int x)
{
while(--x);
}

只看该作者 · 2015-12-1 17:05

自己顶一下。。。。。重写了好几遍还是没搞定啊。。。。

大神们帮我看看这个程序哪里出错了

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