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linuxshellraspberry-pi
Shebin Jose Jacob
Shebin Jose Jacob

Reputation: 61

Reading Serial Data for 1 second in Raspberry Pi using 'stty'

I am trying to read data from a serial port on Raspberry Pi using the stty command like this.

stty -F /dev/ttyACM0 115200 min 0 time 10
cat < /dev/ttyACM0

What I'm expecting is that the cat command will read data only for 1s (referring to the man page of stty). But the cat command is reading data continuously. How can I read data only for 1 second?

Upvotes: 0

Views: 1830

Answers (1)

Shebin Jose Jacob
Shebin Jose Jacob

Reputation: 61

I myself solved it after multiple attempts. I am posting the answer as it might help someone.

stty -F /dev/ttyACM0 115200 -xcase -icanon min 0 time 10
cat < /dev/ttyACM0

The timeout is N tenths of a second. So if you want to read data for N seconds set timeout to N*10 seconds

Upvotes: 4

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