I am creating custom board with the SAM4S and using the SAM4S-EK as a reference particularly the UART portion.
I noticed on the EK board, the UTXD0 (PA10) line goes through the RS232 transceiver and out to pin 3 on the DB9 (which is also a transmit line on the PC side). Similarly the URXD0 (PA9) line gets connected to pin 2 on the DB9 (which is a receive data on the PC side).
This seems to have a signal collision. Can anyone confirm that the UART on the SAM4S-EK board work?
Thanks in advance.