Guest_imported
New member
- Jan 1, 1970
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Hello,
I would like to know the functions available to write/read... on a port.
thank you!
I would like to know the functions available to write/read... on a port.
thank you!
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communication with serial a port
- Thread starter Guest_imported
- Start date
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Hi:
What operating system are you using? I have no experience with Windows/DOS, but in unix, everything is treated as a file.
In every case I've seen, you open, read, write, and close serial ports low-level, meaning you don't use the stream functions, fopen, fputs, etc.
Generally, an open is something like:
if ((lpr_fd = open("/dev/serialport", O_RDWR|O_SYNC)) == -1)
{
printf("error opening port\n"
;
exit(1);
}
Also, it depends on the hardware hooked to your port. Last year, I wrote an article on communicating with unix serial and network devices. Read it here:
Regards,
Ed
What operating system are you using? I have no experience with Windows/DOS, but in unix, everything is treated as a file.
In every case I've seen, you open, read, write, and close serial ports low-level, meaning you don't use the stream functions, fopen, fputs, etc.
Generally, an open is something like:
if ((lpr_fd = open("/dev/serialport", O_RDWR|O_SYNC)) == -1)
{
printf("error opening port\n"
;exit(1);
}
Also, it depends on the hardware hooked to your port. Last year, I wrote an article on communicating with unix serial and network devices. Read it here:
Regards,
Ed
The linux programmers guide contains examples of how to use a serial port in Linux. There is also a program called miniterm.c which you can compile and use to read/write from/to a serial port. Coupled with this there are two HOWTOS which look at programming serial ports, one is heavily based on the LPG miniterm.c .example.
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