//serial.h的具体实现，要注意的地方是数据类型的转换,QLineEdit的text().toASCII返回的是QByteArray,而PortSend要发送的是
//char类型的数据，所以就需要转换，在Qt中使用.data()就可以实现转换。还有要注意的地方就是QSocketNotifier不要忘记添加了。
#include "serial.h"
portinfo_t portinfo = {
    '0',      // print prompt after receiving
    115200,   // baudrate: 115200
    '8',      // databit 8
    '0',      // debug: off
    '0',      // echo off
    '0',      // flow control: software
    '0',      // default tt: SAC0
    '0',      // parity: none
    '1',      // stopbit: 1
     0       // reserved
};
/*
typedef struct //define the uart value struct
{
        char    prompt;         //prompt after reciving data
        int     baudrate;       //baudrate
        char    databit;        //data bits, 5, 6, 7, 8
        char    debug;          //debug mode, 0: none, 1: debug
        char    echo;           //echo mode, 0: none, 1: echo
        char    fctl;           //flow control, 0: none, 1: hardware, 2: software
        char    tty;            //tty: 0, 1, 2, 3, 4, 5, 6, 7
        char    parity;         //parity 0: none, 1: odd, 2: even
        char    stopbit;        //stop bits, 1, 2
        //const int reserved;   //reserved, must be zero
        int reserved;           //reserved, must be zero
}portinfo_t;
  */
static int serial_fd;
char databuffer[20];
int datalen;
serial::serial(QWidget *parent)
    : QWidget(parent)
{

//    layout();//lay out

//    open_button->setEnabled(true);
//    close_button->setEnabled(false);
//    send_button->setEnabled(false);

//    connect(open_button,SIGNAL(clicked()),this,SLOT(open_serial()));
//    connect(close_button,SIGNAL(clicked()),this,SLOT(close_serial()));
//    connect(send_button,SIGNAL(clicked()),this,SLOT(send_setial()));

    QSocketNotifier *notifier=new QSocketNotifier(serial_fd,QSocketNotifier::Read,this);
    connect(notifier,SIGNAL(activated(int)),this,SLOT(read_serial()));
    read_serial();
}
serial::~serial()
{

}
void serial::init_serial( int baudrate, int portNumber,int stopbit )
{
    portinfo.baudrate = baudrate;
    portinfo.tty = portNumber+'0';
    portinfo.stopbit = stopbit+'0';
    portinfo.fctl = '0';
}
void serial::open_serial()
{
    serial_fd=PortOpen(&portinfo);
    if(serial_fd<0)
    {
        perror("Error:open serial port error");
        //exit(1);
    }
    PortSet(serial_fd,&portinfo);
    QSocketNotifier *notifier=new QSocketNotifier(serial_fd,QSocketNotifier::Read,this);
    connect(notifier,SIGNAL(activated(int)),this,SLOT(read_serial()));
    read_serial();
}
void serial::close_serial()
{
    PortClose(serial_fd);

}
void serial::read_serial()
{
    datalen=PortRecv(serial_fd,databuffer,10,115200);
    //textbrowser->insertPlainText(databuffer);
    qDebug()<<"read:"<<datalen;
}


void serial::send_serial(char *buf,int len)
{
    PortSend(serial_fd,buf,len);
}

//void serial::layout()
//{
//    label1=new QLabel("Receive:");
//    label2=new QLabel("Send:");
//    open_button=new QPushButton("Open");
//    close_button=new QPushButton("Close");
//    send_button=new QPushButton("Send");
//    textbrowser=new QTextBrowser(this);
//    lineedit=new QLineEdit;
//    lineedit->setText("123489");
//    QVBoxLayout *vlayout1=new QVBoxLayout;
//    vlayout1->addWidget(label1);
//    vlayout1->addWidget(textbrowser);
//    vlayout1->addWidget(label2);
//    QVBoxLayout *vlayout3=new QVBoxLayout;
//    vlayout3->addWidget(open_button);
//    vlayout3->addWidget(close_button);
//    QHBoxLayout *hlayout2=new QHBoxLayout;
//    hlayout2->addLayout(vlayout1);
//    hlayout2->addLayout(vlayout3);
//    QHBoxLayout *hlayout1=new QHBoxLayout;
//    hlayout1->addWidget(lineedit);
//    hlayout1->addWidget(send_button);
//    QVBoxLayout *vlayout2=new QVBoxLayout;
//    vlayout2->addLayout(hlayout2);
//    vlayout2->addLayout(hlayout1);
//    setLayout(vlayout2);
//}

//总结：总算完成了，前后花了两天的时候，很高兴的是自己没有放弃。至于这个串口的QT有什么用，那作用老大了，以前我用VB写过环境
//监控系统，在PC端实现的，低下用的是ADUC824，那代码，叫宏伟啊。Qt就简单多了（站在巨人的肩膀上）。有了UART的通信，一些
//控制类的东西都可以实现了，而且界面还可以做得要多漂亮就有多漂亮（看个人的了）。