Baud rate is 115200
We are using TX,RX and GND pin
The signal is not to long, no more than 11 bytes per second
I have connected Jetson Nano to the PC through the sparkfun connecter
Any data that I sent from Jetson to PC I can see in the serial port
But If I am trying to send any data to the Jetson (From the PC) - serial port on Jetson side stops to work.
After this - Jetson port start works as echo - if I send byte b1 to jetson - i am receiving the same byte back
please have below two different approaches for your testing.
we had verified that serial data is being transferred properly without any data loss with execute getty running at background,
for example, on Jetson-Nano.
$ sudo /sbin/getty -a ubuntu -L 115200 ttyTHS &
Or, please stop stop the nvgetty service for verification. systemctl stop nvgetty
systemctl disable nvgetty
Same issue. I followed the tutorials step by step. I have also disabled all "nvgetty` services and listed all processes using “/dev/ttyTHS1” on Jetson Nano. I am using Python-Serial package to echo back a packet. RX on jetson is working fine and receives the packet properly. But TX part not working (i.e. it sends back random bytes like FF FF 9F EF FE or 7E FF 7F FF BB). An suggestions?
Hello. Got same problem on SIM800L GPRS modem & on PL2303 USB-UART chips.
It is too low level on RXD pin, which leads to disconnect/error of PORT of Jetson Nano Tegra chip, not in kernel of Linux.
You need to check voltage level on RXD pin, it must be not lowel that 3V.
Is there a comprehensive solution for this, I have stopped and disabled nvgetty and the Jetson nano still cannot transfer data out but can read data, I am using Putty on windows as target manager and minicom on Jetson nano as device under test.