I am writing my program with the ASF in Studio 6.1 on a SAMD20J18 MCU.
I found that the possible pin multiplexing options in the ASF usart library do not have the TX pin on PAD1 options. Is this a limitiation on the MCU or only the usart.h library is not complete?
Also, how about the RTS and CTS pins? The usart library seems do not care about these two pins. So do I have to control the RTS and CTS as a GPIO pin my own?
Thanks a lot!