Serial Receiving from Arduino to Raspberry Pi with PySerial stops after a while

Question

I\'m working on a project in which I have to receive some 25 character data at a time in order to process it in Raspberry Pi. Here is the example code that generates some da

Answer 1

I had the same problem and was breaking my head for a good time, try this

Run

ps -ef | grep tty

If the output looks anything like

root      2522     1  0 06:08 ?        00:00:00 /sbin/getty -L ttyAMA0 115200 vt100

Then you need to disable getty from trying to send data to that port

In order to use the Raspberry Pi’s serial port, we need to disable getty (the program that displays login screen) by find this line in file /etc/inittab

T0:23:respawn:/sbin/getty -L ttyAMA0 115200 vt100

And comment it out by adding # in front of it

#T0:23:respawn:/sbin/getty -L ttyAMA0 115200 vt100)

To prevents the Raspberry Pi from sending out data to the serial ports when it boots, go to file /boot/cmdline.txt and find the line and remove it

console=ttyAMA0,115200 kgdboc=ttyAMA0,115200

Reboot the Raspberry Pi

Credit where credit is due: http://blog.oscarliang.net/raspberry-pi-and-arduino-connected-serial-gpio/ helped me figure out how to diable getty