mini2440的IIC在Qt上实现

在QT上的实现，主要实现了，24CXX的 读与写（参照应用例子），数据是写成功，不过读的数据在Qt上显示是字符的ASCII码。主要是想结合着linux从最底下到最上面完全弄懂IIC，因为IIC太 重要了。 贴出myiic.h头文件，需要用到mini2440里面的两个文件，24cxx.h和24cxx.c(在这里将其改为.cpp要不编译不过)

#ifndef MYIIC_H

#define MYIIC_H

#include #include "24cXX.h"

class myiic : public QWidget {

Q_OBJECT

public: myiic();

~myiic();

void iic_layout();

void myopen_iic();

public slots:

void myread_iic();

void mywrite_iic();

void myclose_iic();

public: QLineEdit *lineedit;

QTextBrowser *textbrowser2;

QPushButton *writebutton;

QPushButton *readbutton;

QPushButton *aboutbutton;

QPushButton *closebutton;

QLabel *label1;

QLabel *label2;

};

#endif

// MYIIC_H然后是myiic.h的具体函数实现，还存在的问题就是显示的是字符的ASCII码，大家可以看到我在数据类型转换那（注释部分），转来转去，显示的还是ASCII码。不知道怎么改了，于是去看底下一点的程序，关键还是要改底下的程序才可以，因此才会发去前面的感慨。

#include "myiic.h"

struct eeprom iic_e;

myiic::myiic()

{

iic_layout();

myopen_iic();

connect(readbutton,SIGNAL(clicked()),this,SLOT(myread_iic()));

connect(writebutton,SIGNAL(clicked()),this,SLOT(mywrite_iic()));

connect(closebutton,SIGNAL(clicked()),this,SLOT(myclose_iic()));

}

myiic::~myiic()

{ }

void myiic::myopen_iic()

{

int a;

a=eeprom_open("/dev/i2c/0", 0x50, EEPROM_TYPE_8BIT_ADDR, &iic_e);

}

void myiic::myread_iic()

{

int ch,i;

int size=256;

int addr;

for(i=0;i<size;i++,++addr)

{

ch = eeprom_read_byte(&iic_e, addr);

QString s;

s=QString::number(ch);

//char *a=s.toLatin1().data();

//QByteArray temp=s.toAscii();

//char *a=temp.data();

//s=QString(a); textbrowser2->insertPlainText(s);

}

}

void myiic::mywrite_iic()

{

int i;

int addr;

QString temp=lineedit->text();

char *datas=temp.toLatin1().data();

for(i=0,addr=0; i<256; i++, addr++)

{

eeprom_write_byte(&iic_e, addr, *datas); datas++;//地址加

}

}

void myiic::myclose_iic()

{

eeprom_close(&iic_e); close();

}

void myiic::iic_layout()

{

lineedit=new QLineEdit(this);

lineedit->setText("12345678abcd");

lineedit->setMaximumHeight(100);

lineedit->setMaximumWidth(220);

textbrowser2=new QTextBrowser(this);

textbrowser2->setMaximumHeight(100);

textbrowser2->setMaximumWidth(220);

writebutton=new QPushButton;

writebutton->setText("write Data into EEPROM via IIC");

readbutton=new QPushButton; readbutton->setText("Read EEPROM Data via IIC");

label1=new QLabel; label1->setText("Status OK");

aboutbutton=new QPushButton("About");

closebutton=new QPushButton("Close");

QHBoxLayout *hlayout=new QHBoxLayout;

hlayout->addWidget(label1);

//hlayout->addWidget(aboutbutton);

hlayout->addWidget(closebutton);

QVBoxLayout *vlayout=new QVBoxLayout;

vlayout->addWidget(writebutton);

vlayout->addWidget(lineedit);

vlayout->addWidget(readbutton);

vlayout->addWidget(textbrowser2);

vlayout->addLayout(hlayout);

setLayout(vlayout);

}