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-   -   Minicom -- want to read data coming in a serial port (https://www.linuxquestions.org/questions/linux-newbie-8/minicom-want-to-read-data-coming-in-a-serial-port-718657/)

ihopeto 04-12-2009 04:25 PM

Minicom -- want to read data coming in a serial port
 
Hi everyone.

I have a microchip PIC outputting data via an Rs232 chip....I want to read the data, see the data at the terminal and also log the data to a file.

Is minicom the best option for this?

I know the data is coming out the serial cable as it works with windows hpeerterminal....but when I configure minicom I am not getting any data.

4800 baud 8N1...the PIC/RS232 chip is sending ASCII characters... numbers...

serial port is number 1 and there is only one....so ttyS0 should be the one...have used this port with minicom before so that shouldnt be an issue but how can I test.

Thanks for the help.

Brian

maresmasb 04-12-2009 06:50 PM

Devices can be read just like generic files. So you use cat, head, tail or similar tool to read from those device files, in your case probably /dev/ttyS0. This way you can at least check if the problem is caused by your minicom settings, or that the device is really not triggering any data.

ihopeto 04-12-2009 09:46 PM

cat /dev/ttyS0 gets no data either
 
Thanks maresmasb

tried reading the data with cat /dev/ttyS0 but I get nothing.

Now I know the data is not sent all the time but rather at set intervals.
About every 10 seconds. Maybe I need to find a script to do this? Any other suggestions.

Thanks again to all

Brian


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