[serial.cpp]
#include
#include
#include "mainwindow.h"
int main(int argc, char *argv[])
{
QApplication a(argc,argv);
MainWindow m;
a.setMainWidget(&m);
m.show();
return a.exec();
}
[mainwindow.h]
#ifndef MAIN_WINDOW_H
#define MAIN_WINDOW_H
#include
class QLabel;
class QPushButton;
class QLineEdit;
class QPixmap;
class SerialThread;
class MainWindow:public QMainWindow {
Q_OBJECT
public:
MainWindow(QWidget * parent = 0, const char * name= 0) ;
~MainWindow(){};
void setCounter(int no);
void setMsgText(char* txt);
public slots:
void serialOperate();
void loadJPEGFile();
protected:
void paintEvent( QPaintEvent * );
private:
QLineEdit *msg;
QPushButton *btn;
QPushButton *btn2LoadImg;
QPixmap *pix;
QLabel *lab;
SerialThread *a;
int counter;
};
#endif
[mainwindow.cpp]
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include "mainwindow.h"
#include "serialthread.h"
void MainWindow::paintEvent( QPaintEvent * )
{
QPainter paint( this );
paint.drawLine( 0,0,500,500 ); // draw line
paint.drawPixmap(0,0,*pix);
}
void MainWindow::loadJPEGFile(){
if(!pix->load("testjpeg")){
//if(!pix->load("circle")){
setMsgText("Load failed");
return;
}
setMsgText("Load success!");
update();
}
void MainWindow::setCounter(int no){
counter = no;
}
void MainWindow::serialOperate(){
a = new SerialThread(this);
a->start();
a->wait();
}
MainWindow::MainWindow(QWidget * parent , const char * name)
:QMainWindow(parent, name)
{
counter = 0;
QVBox *vbox;
vbox = new QVBox(this);
vbox->resize(300,150);
//msg = new QLabel("SERIAL PROGRAMMING",vbox);
msg = new QLineEdit("SERIAL PROGRAMMING",vbox);
msg->resize(300,50);
pix = new QPixmap();
btn = new QPushButton(vbox);
btn->setText("GO!");
QApplication::connect(btn,SIGNAL(clicked()),this,SLOT(serialOperate()));
btn2LoadImg = new QPushButton(vbox);
btn2LoadImg->setText("LOAD");
lab = new QLabel("before load jpeg",vbox);
QApplication::connect(btn2LoadImg,SIGNAL(clicked()),this,SLOT(loadJPEGFile()));
//btn->resize(100,75);
//vbox->show();
};
void MainWindow::setMsgText(char* txt){
QString msgs(txt);
QString count = QString::number(counter,10);
msgs.append(count);
const char *re = msgs.ascii ();
//strcat(msgs,);
msg->setText(re);
};\
[my_define.h]
#define BAUDRATE B115200
#define BLOCK_SIZE 200
#define DEVICE "/dev/ttyS0"
#define WAIT_TIME 5
#define CHANGE_LINE 0x0a
#define ACK_NUM 3
#ifndef TRUE
#define TRUE 1
#endif
#ifndef FALSE
#define FALSE -1
#endif
[serialthread.h]
#ifndef SERIAL_THREAD_H
#define SERIAL_THREAD_H
#include
class MainWindow;
class SerialThread: public QThread {
public:
SerialThread(MainWindow *parent);
virtual void run();
private:
MainWindow *parent;
};
#endif
[serialthread.cpp]
#include
#include
#include
#include
#include
#include "my_define.h"
#include "serialthread.h"
#include "mainwindow.h"
int set_nc_mode(int fd)
{
struct termios options;
if ( tcgetattr( fd,&options) != 0){
perror("SetupSerial 1");
return(FALSE);
} /* get current port settings */
bzero(&options, sizeof(options));
options.c_cflag |= BAUDRATE | CS8 | CLOCAL | CREAD;
options.c_cflag &= ~CRTSCTS;
options.c_iflag = IGNPAR;
options.c_oflag &=~OPOST;
//
options.c_lflag = 0;
options.c_cc[VTIME] = WAIT_TIME;
options.c_cc[VMIN] = BLOCK_SIZE; /* blocking read until 5 chars received */
tcflush(fd, TCIFLUSH);
tcsetattr(fd,TCSANOW,&options);
return(TRUE);
}
int set_c_mode(int fd)
{
struct termios options;
if ( tcgetattr( fd,&options) != 0){
perror("SetupSerial 1");
return(FALSE);
}
bzero(&options, sizeof(options));
tcflush(fd, TCIOFLUSH);
cfsetispeed(&options, BAUDRATE);
cfsetospeed(&options, BAUDRATE);
options.c_cflag |=(CLOCAL|CREAD);
options.c_cflag &= ~CRTSCTS;
options.c_cflag &= ~CSIZE;
options.c_cflag |= CS8;
options.c_cflag &= ~PARENB; /* Clear parity enable,clear control mode flag */
options.c_iflag &= ~INPCK; /* Disable parity checking ,*/
options.c_cflag &= ~CSTOPB;
options.c_iflag |= IGNBRK;
options.c_lflag |= ICANON;
options.c_lflag &= ~(ECHO | ECHOE | ISIG);
options.c_oflag &= ~(OPOST);
tcflush(fd, TCIOFLUSH);
if (tcsetattr(fd,TCSANOW,&options) != 0){
perror("SetupSerial 3");
return (FALSE);
}
return(TRUE);
}
void send_ack(int fd)
{
char buf[]={'A','C','K',CHANGE_LINE};
write(fd,buf,sizeof(buf));
}
void resend(int fd)
{
char buf[]={'R','S','D',CHANGE_LINE};
write(fd,buf,sizeof(buf));
}
void delay(int i)
{
int j;
for (;i>0;i--)
for(j=0;j<65535;j++);
}
////////////////////////////////////////////////////////////////////////////////////////////
SerialThread::SerialThread(MainWindow *parent){
this->parent = parent;
}
void SerialThread::run()
{
int fd,c, res;
int block_num,last_block;
int i;
char buf[BLOCK_SIZE];
char file_name[32];
FILE *fp;
struct termios oldtio;
block_num=last_block=0;
fd = open(DEVICE, O_RDWR | O_NOCTTY );
parent->setCounter(fd);
parent->setMsgText("opend device fd::::::");
if (fd <0){
perror(DEVICE);
parent->setMsgText("open device failed");
// exit(-1);
}
tcgetattr(fd,&oldtio);
set_nc_mode(fd);
printf("Changed to nc mode\n");
/*
res=read(fd,( char *)file_name,32);
parent->setCounter(res);
parent->setMsgText("res is ::::::");
*/
/*
if(res>0){
file_name[res-1]='\0';
printf("Received the file name:%s\n",file_name);
}
else
printf("The received file name is error.\n");
fp=fopen(file_name,"wb");
if(fp==NULL){
printf("Can not creat file %s!\n",file_name);
return;
// exit(-1);
}
else
{
send_ack(fd);
printf("The file %s is created.\nWaitting for the block num and last block size\n",file_name);
}
//set_nc_mode(fd);
//printf("Changed to nc mode\n");
res=read(fd,buf,4);
printf("res=%d\n",res);
printf("Received the block num \n");
for(i=0,block_num=0;i<4;i++){
block_num=block_num*10+buf;
printf("buf[%d]=%x\n",i,buf);
}
printf("The number of blocks is %d\n",block_num);
send_ack(fd);
res=read(fd,buf,3);
printf("res=%d\n",res);
printf("Received the last block size \n");
for(i=0,last_block=0;i<3;i++){
last_block=last_block*10+buf;
printf("buf[%d]=%x\n",i,buf);
}
printf("The last block size is %d\n",last_block);
send_ack(fd);
printf("Starting receive blocks\n");
for(i=0;i res=read(fd,buf,BLOCK_SIZE);
if(res!=BLOCK_SIZE){
printf("res=%d,\t Request resend the %d block\n",res,i);
i--;
tcflush(fd, TCIOFLUSH);
resend(fd);
}
else{
fwrite(buf,1,BLOCK_SIZE,fp);
printf("Received the %d block, res=%d\n",i,res);
printf("Send ack signal complete,waiting to read\n");
send_ack(fd);
}
}
printf("start transporting the last block\n");
if(last_block>0){
send_ack(fd);
res=read(fd,buf,last_block);
printf("res=%d\n",res);
if(res!=last_block){
printf("Request resend the last block\n");
tcflush(fd, TCIOFLUSH);
resend(fd);
}
else
fwrite(buf,1,last_block,fp);
}
send_ack(fd);
printf("The file transports end\n");
fclose(fp);
printf("close the file\n");
tcsetattr(fd,TCSANOW,&oldtio);
close(fd);
printf("close the serial port\n");
*/
}
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