I have some freeze when my system communicate via UART.
To test it I have ignected on it a square wave at 10Khz on it.
If I upply the disturbance first, then I read the serial port (cat /dev/ttyS0) system freeze.
If I open the serial then upply the disturbance the serial read some strange chapter but don't crash.
Someone can help me to solve it?
Thanks
Ciao Sandro, have you disabled all the other tasks using the serial port?
Ciao Davide,
Yes, I have verified it by fuser and no program use it.
Beside, if the UART doesn't have disturbance, the communication is regular.