I got equipment that COM port works with RTS and DTR pins, I found RTS pin for COM port 2 on Fez cobra II board. But, I am not sure about DTR pin. Is code require any specification for hardware flow control when we use RTS pin ?. How can I solve problem of DTR pin ?
sorry, it’s fundamental - set a digital output pin to true/false value as you need to drive the DTR state you want. Pick any code that defines a digital output pin and sets it’s value.