Re: [opensuse] howto - Read Data from Serial Port?

David C. Rankin wrote:
Banning someone out of personal spite is uncalled for fascism wrote:
David C. Rankin wrote:
Listmates,

A linux question. I have a phone system that will output call logs through an rs-232 cable. I would like to write a script that will read the data from the serial port and input it into a mysql table.

cat /dev/ttyS_ | data_storing_program


Thanks Theo, and Mr. fascism,

I will look at the python interface and definitely see if I can make the cat script work.

Another question, If I write a small script and "sleep" for 30 seconds or so during the loop to cut down on racing the loop, will that have any unintended consequences I should look out for?


You might want to drop that down to 10 seconds.

On the other hand, if you just write the program as if it's
taking input from the keyboard, the process will automatically
"block on I/O" and go to sleep until there is data ready
for it to read.

Try both with and without explicit sleep statements.

I'm pretty sure that I/O blocking will prevent the sort
of problem that you're anticipating.
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