mini2440之--adc程序

来源：互联网发布：大数据市场调研编辑：程序博客网时间：2024/06/08 07:39

如图所示，用到的组块：TextLabel,LCDNumber,Pixmap Label,Group Box,PushButton

adc.h

#ifndef MYHELLOFORM_H

#define MYHELLOFORM_H

#include "adc_base.h"

#include <qpixmap.h>

class MyADCForm : public ADCBaseForm

    Q_OBJECT

    public:

        MyADCForm( QWidget* parent = 0, const char* name = 0, WFlags fl = 0 );

    virtual ~MyADCForm();

    //const QPixmap *eddy;

int fd;

    private slots:

        void startADC();

void stopADC();

};

#endif // MYHELLOFORM_H

adc.cpp

#include "adc.h"

#include <qlabel.h>

#include <qpushbutton.h>

#include <qspinbox.h>

#include <qlcdnumber.h>

/*

#include <qtopia/qpeapplication.h>

#include <unistd.h>

#include <sys/types.h>

#include <stdio.h>

#include <stdlib.h>

#include <sys/ioctl.h>

#include <sys/stat.h>

#include <fcntl.h>

*/

#include <stdio.h>

#include <unistd.h>

#include <stdlib.h>

#include <sys/types.h>

#include <sys/stat.h>

#include <sys/ioctl.h>

#include <fcntl.h>

#include <linux/fs.h>

#include <errno.h>

#include <string.h>

MyADCForm::MyADCForm( QWidget* parent, const char* name, WFlags fl)

    :ADCBaseForm(parent, name, fl)

fd=0;

    connect(PushButton1,SIGNAL(clicked()),this,SLOT(startADC()));

connect(PushButton1,SIGNAL(clicked()),this,SLOT(stopADC()));

MyADCForm::~MyADCForm()

::close(fd);

void MyADCForm::startADC()

    //TextLabel1->setText("System Led is Started");

fd = ::open("/dev/adc", 0);

if (fd < 0) {

::exit(1);

for(int num=0;num<20;num++) {

char buffer[30];

int len = ::read(fd, buffer, sizeof buffer -1);

if (len > 0) {

buffer[len] = '\0';

int value = -1;

sscanf(buffer, "%d", &value);

//printf("ADC Value: %d\n", value);

LCDNumber1->display(value);

} else::exit(1);

usleep(500* 1000);

LCDNumber2->display(num);

::close(fd);

}void MyADCForm::stopADC()

::close(fd);

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