i am trying to use the uart ports of the J14 button header (RXD, TXD) of the jetson xavier nx but the problem is that in the documentation i can’t find where are specified the name that ubuntu gives to these port, so i try testing with the 3 available references: ttyTHS0, ttyTHS1 and ttyTHS4 ports, but none port worked, so my question is this UART J14 port is enabled or i have to do the same thing that was done with the jetson tx2 to enable the ttyths2 port?.
may I have your confirmation you’d working with NX or TX2?
for Jetson Xavier NX, it’s pin-3 and pin-4 respectively for UART Receive and Send of J14,
pin-3 and pin-4 were UART2_TXD,UART2_RXD / UART3_TX,UART3_RX =pin 236,238, the port is mapping to ttyTHS2.
here’s similar discussion thread, Topic 145106 for your reference.