Due to USB power issues, sometimes the PSCU boots without correctly initialising the USB driver for the LCD display module. The adapter then throws an untrapped exception attempting to open the device file (/dev/ttyACM0). Need to make the adapter:
a) handle the exception gracefully and then disable attempts to write to it
b) set a flag accessible as a parameter indicating that the display is not running
Due to USB power issues, sometimes the PSCU boots without correctly initialising the USB driver for the LCD display module. The adapter then throws an untrapped exception attempting to open the device file (/dev/ttyACM0). Need to make the adapter:
a) handle the exception gracefully and then disable attempts to write to it b) set a flag accessible as a parameter indicating that the display is not running