A simple test of serial port writing data to the port. More...

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <pthread.h>
#include <signal.h>
#include "debug-msg.h"
#include "serialport.h"

Functions
void *	write_port_thread (void *argc)
void *	read_port_thread (void *argc)
void	sig_handle (int sig_num)
int	main (void)
Variables
pthread_t	write_tid
pthread_t	read_tid
char *	buf = "Are you going to die? "
char	tmp [512]

Detailed Description

A simple test of serial port writing data to the port.

Copyleft (C) 2010 Late Lee This program is tested on LINUX PLATFORM, WITH GCC 4.x. The program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY. Please feel free to use the program, and I feel free to ignore the related issues. Any questions or suggestions, or bugs, please contact me at <$ echo -n "aHR0cDovL3d3dy5sYXRlbGVlLm9yZwo=" | base64 -d> or e-mail to <$ echo -n "bGF0ZWxlZUAxNjMuY29tCg==" | base64 -d> if you want to do this.

Author:: Late Lee

Date:: Mon Jan 10 2011

Test:: To compile the program, type gcc main.c serialport.c -lthread ,then it will generate the executable binary a.out. To run it, type ./a.out.Make sure you have the permission to open the serial port.
You can start a ternimal and type minicom(also make sure you can open the device). When everything is OK, you can see the data in minicom using the same port if you connect pin 2 & pin 3 of the port (the male connector, see the picture below)(but I don't know the reason, isn't it blocked?).
If you want to stop the program, just use 'Ctrl+c'.
Here are snapshots of the program:

Writing to the port...

Reading the data in minicom...

And here comes the serial port connector:

A 9-pin male D-Sub connector(*)

A 9-pin female D-Sub connector

(*)We use this connector in the test.

Function Documentation

void* read_port_thread ( void * argc )

read_port_thread - Thread that reads data from the port

Parameters:

argc	: Here means the port(specified by the fd).

Note:: This function has not tested yet.

void sig_handle ( int sig_num )

sig_handle - Handle the INT signal.

Parameters:

sig_num : The signal.

Note:: This function is not used.

void* write_port_thread ( void * argc )

write_port_thread - A thread that writes data to the port

Parameters:

argc	: Here means the port(specified by the fd).

Note:: This is only a test, not the real one.

Variable Documentation

char* buf = "Are you going to die? "

The data we write to the port.

pthread_t read_tid

read thread

char tmp[512]

data we receive

pthread_t write_tid

write thread

main.c File Reference

Functions

Variables

Detailed Description

Function Documentation

Variable Documentation