|
Its weird..
If I connect the controller with real term with an usb-rs232 cable, I see the rtd data.. so the output of data from the controller works.
If I connect the shield to the usb-rs232 cable and connect rx and tx on ttl level on the shield the data is echoed.. so the shield is good.
But if I connect the shield to the controller nothing works.. no data on the outputs and led's don't flash up..
I don't get it.. anybody an idea?
Maybe the controllers rs232 levels aren't sufficient for the shield but are for the usb-rs232 cable?
|