TX2NX THS1 pixhawk not working

Autonomous Machines Jetson & Embedded Systems Jetson TX2
1

Leetop A203V3.1 Tx2NX pixhawk on /dev/ttyTHS1 pin 8,9,10
In our usecase we are trying to use THS1 on tx2nx pin (8-10) on 40pin header to connect to pixhawk
But even after removing serial=<3> from bpmp dtb and enabling THS2 still not able to send recv data on THS1 we are using jetpack 4.6.1

Please help

tx2nx@linux:~$ sudo dmesg | grep THS
[ 0.943940] 3110000.serial: ttyTHS1 at MMIO 0x3110000 (irq = 34, base_baud = 0) is a TEGRA_UART
[ 0.944635] c280000.serial: ttyTHS2 at MMIO 0xc280000 (irq = 35, base_baud = 0) is a TEGRA_UART
[ 0.945360] 3130000.serial: ttyTHS3 at MMIO 0x3130000 (irq = 36, base_baud = 0) is a TEGRA_UART

tx2nx@linux:~$ sudo dmesg | grep bpmp
[ 0.389984] bpmp: waiting for handshake
[ 0.389987] bpmp: handshake completed
[ 0.390005] bpmp: synchronizing channels
[ 0.390013] bpmp: channels synchronized
[ 0.390016] bpmp: mail init ok
[ 0.397534] tegra_bpmp_clk_init: clock init ok (638 clks)
[ 0.426116] iommu: Adding device d000000.bpmp to group 46
[ 0.426317] bpmp: ping status is 0
[ 0.426393] bpmp d000000.bpmp: firmware tag is 91572a54614f84d0fd0c270beec2c56f
[ 0.427998] bpmp d000000.bpmp: probe ok
[ 1.595073] bpmp: mounted debugfs mirror

tx2nx@linux:~$ sudo mavproxy.py --master=/dev/ttyTHS1 --baud=57600
Connect /dev/ttyTHS1 source_system=255
Log Directory:
Telemetry log: mav.tlog
Waiting for heartbeat from /dev/ttyTHS1
MAV> link 1 down

[ 807.668399] serial-tegra 3110000.serial: configured rate out of supported range by -0.6 %
[ 812.202681] serial-tegra 3110000.serial: configured rate out of supported range by -0.6 %
[ 858.027172] serial-tegra 3110000.serial: configured rate out of supported range by -0.6 %
[ 881.926992] serial-tegra 3110000.serial: configured rate out of supported range by -0.6 %
[ 898.855245] serial-tegra 3110000.serial: configured rate out of supported range by -0.6 %
[ 1212.288378] serial-tegra 3110000.serial: configured rate out of supported range by -0.6 %
[ 1212.324106] serial-tegra 3110000.serial: configured rate out of supported range by -0.6 %
[ 1279.686847] serial-tegra 3110000.serial: configured rate out of supported range by -0.6 %
[ 1279.722618] serial-tegra 3110000.serial: configured rate out of supported range by -0.6 %
[ 2237.347280] serial-tegra 3110000.serial: configured rate out of supported range by -0.6 %
[ 2237.383184] serial-tegra 3110000.serial: configured rate out of supported range by -0.21 %
[ 2293.845843] serial-tegra 3110000.serial: configured rate out of supported range by -0.21 %
[ 2293.881814] serial-tegra 3110000.serial: configured rate out of supported range by -0.21 %
[ 2326.763506] serial-tegra 3110000.serial: configured rate out of supported range by -0.21 %
[ 2326.800966] serial-tegra 3110000.serial: configured rate out of supported range by -0.6 %

3

Hi ,Leetop A203V3.1 Tx2NX PIN8/pin10 on 40 pin header should be ttyTHS2, could you try ttyTHS2,thanks

2 Likes
4

Thanks, it worked

6

Though it is working but when i request params using mavproxy it hangs, so looks like the uart buffer size needs to be increased?

7

seems like tx2nx ths2 use 2 stop bits, we are facing timeout errors on mavproxy

8

Yes, I’ve seem you open another topic for this in TX2NX UART ttyTHS2 not working properly with Orange CubePlus Telemetry - Jetson & Embedded Systems / Jetson TX2 - NVIDIA Developer Forums

9

Hi Leetopz
For tx2nx should we have to add a pull up on tx /rx ?

10

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