Jetson B01 Serial Data Packet Loss in Custom Carrier

Hi,
We have a custom carrier board working with the B01 Nano module. We are facing data packet loss issue on UART1_RXD pin 205.
Test Set up: Serial port 1 connected to serial port 2
Serial Console: Minicom
Ser 1 TX --> Ser 2 RX ==> Successful
Ser 2 TX --> Ser 1 RX ==> Fail

hello roshan.dsouza,

could you please try stopping and disabling the nvgetty service.
for example,

$ systemctl stop nvgetty
$ systemctl disable nvgetty

My test set up is looping back from serial port 1 to serial port 2, ie ttyTHS1 connected to ttyTHS2. When I issue the above commands, I am unable to open both the serial ports at once on 2 different minicom terminals which I was able to prior to the issue of these commands.

hello roshan.dsouza,

could you please share more details of those two serial ports you’re used,
for example, which pin you’re used for serial-1, and serial-2.
thanks

once I pass these commands, I am unable to open the serial ports with Minicom simultaneously which I was able to prior to issuing these commands

Serial Port 1 --> UART0 from Nano --> Level Translator --> Multi protocol transceiver --> Connector
Serial Port 2 --> UART 1 from Nano --> Level Translator --> Multi protocol transceiver --> Connector

hello roshan.dsouza,

suggest you should narrow down the issue by excluding multi-protocol transceiver, thanks