On Wed, Aug 13, 2008 at 1:48 PM, Eric Robishaw <eric%40robishaw.us> wrote:
> You might want to look at the microterm.c example in the files section of
> this yahoo group:
>
http://tech.groups.yahoo.com/group/ts-7000/files/
> look for "microterm.c"
>
> Eric
>
>
> On Wed, Aug 13, 2008 at 11:40 AM, vigu <vigu.cruises%40gmail.com> wrote:
>>
>> thanks a lot .. but when i read data it returned me -1. is there
>> something wrong in what i'm doing. i'm sorry am very new to serial
>> programming. here is the code
>>
>> #include <stdio.h>
>> #include <unistd.h>
>> #include <fcntl.h>
>> #include <errno.h>
>> #include <termios.h>
>>
>> int initComm() {
>>
>> int fd;
>> struct termios options;
>>
>> // Open the RS232 port
>> fd = open("/dev/ttts4", O_RDWR | O_NOCTTY );
>> if(fd == -1) {
>> #ifdef DEBUG
>> printf("Could not open the comm port.\r\n");
>> #endif
>> return fd;
>> }
>>
>> // Clear the flags
>> fcntl(fd, F_SETFL, 0);
>>
>> // Get the port options
>> tcgetattr(fd, &options);
>> // Set the speed
>> cfsetispeed(&options, B9600);
>> cfsetospeed(&options, B9600);
>>
>> // Set the comm flags (115200 8N1)
>> options.c_cflag = B9600 | CS8 | CLOCAL | CREAD;
>> options.c_iflag = 0;
>> options.c_oflag = 0;
>> options.c_lflag = 0;
>>
>> // Set the timeout to be 1000ms
>> options.c_cc[VMIN] = 0;
>> options.c_cc[VTIME] = 10;
>>
>> // Save these settings
>> tcsetattr(fd, TCSANOW, &options);
>>
>> // Flush the settings
>> tcflush(fd, TCIFLUSH);
>> tcflush(fd, TCOFLUSH);
>>
>> return fd;
>>
>> }
>
>