Flow control does not seem to work using a Serial Wrap Plug on BSP5. UART Flow ControI works on BSP4 Boot to Qt for Embedded Linux 3.0.3 b2qt-apalis-imx8 image.
The serial port loops back data with TX & RX connected. But on BSP5 data loops back with RTS & CTS not connected with Flow Control ON or OFF.
I am using stty to set Flow Control On/OFF as follows…
Setup COM2 with No Flow Control:
stty -F /dev/ttyLP3 115200 -crtscts
Setup COM2 with Flow Control:
stty -F /dev/ttyLP3 115200 crtscts
I’m hoping this is something in the Device Tree.