Jetson Orin Nano Serial port for Raspberry Pi build hat

allenn_farcas007 · April 25, 2023, 3:35am

Hi,

I cannot seem to access the /dev/serial0 port. It tells me no such file or directory.
I also tried this sudo dmesg | grep tty

And the output was:

[ 0.000000] Kernel command line: root=/dev/mmcblk1p1 rw rootwait rootfstype=ext4 mminit_loglevel=4 console=**tty**TCU0,115200 console=**tty**AMA0,115200 firmware_class.path=/etc/firmware fbcon=map:0 net.ifnames=0
[ 0.238969] 31d0000.serial: **tty**AMA0 at MMIO 0x31d0000 (irq = 65, base_baud = 0) is a SBSA
[ 1.391477] printk: console [**tty**AMA0] enabled
[ 3.971564] printk: console [**tty**TCU0] enabled
[ 7.027644] 3100000.serial: **tty**THS0 at MMIO 0x3100000 (irq = 17, base_baud = 0) is a TEGRA_UART
[ 7.044854] 3130000.serial: **tty**THS3 at MMIO 0x3130000 (irq = 63, base_baud = 0) is a TEGRA_UART
[ 7.061759] 3140000.serial: **tty**THS4 at MMIO 0x3140000 (irq = 64, base_baud = 0) is a TEGRA_UART
[ 14.011138] systemd[1]: Created slice system-serial\x2dge**tty**.slice.

I installed pyserial and tried sudo usermod -a -G dialout $USER
Also the commands from here :

sudo systemctl stop nvgetty 
sudo systemctl disable nvgetty 
sudo udevadm trigger

Then reboot and then sudo apt-get install python3-serial.

I am basically trying to connect to Raspberry Pi build hat

Of course, I had installed the buildhat library required for interfacing with the RPi buildhat (which also includes the gpiozero library as a dependency)

I am using the latest Jetpack 5.1, on a clean system, with python 3.8.10

Do you have any advice on how to solve this?

P.S.: The entire error I get is the following:

Traceback (most recent call last):
  File "/usr/local/lib/python3.8/dist-packages/serial/serialposix.py", line 322, in open
    self.fd = os.open(self.portstr, os.O_RDWR | os.O_NOCTTY | os.O_NONBLOCK)
FileNotFoundError: [Errno 2] No such file or directory: '/dev/serial0'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "test.py", line 3, in <module>
    f = ForceSensor('A')
  File "/usr/local/lib/python3.8/dist-packages/buildhat/force.py", line 21, in __init__
    super().__init__(port)
  File "/usr/local/lib/python3.8/dist-packages/buildhat/devices.py", line 57, in __init__
    Device._setup()
  File "/usr/local/lib/python3.8/dist-packages/buildhat/devices.py", line 80, in _setup
    Device._instance = BuildHAT(firm, sig, v, **kwargs)
  File "/usr/local/lib/python3.8/dist-packages/buildhat/serinterface.py", line 105, in __init__
    self.ser = serial.Serial(device, 115200, timeout=5)
  File "/usr/local/lib/python3.8/dist-packages/serial/serialutil.py", line 244, in __init__
    self.open()
  File "/usr/local/lib/python3.8/dist-packages/serial/serialposix.py", line 325, in open
    raise SerialException(msg.errno, "could not open port {}: {}".format(self._port, msg))
serial.serialutil.SerialException: [Errno 2] could not open port /dev/serial0: [Errno 2] No such file or directory: '/dev/serial0'

Thanks!

KevinFFF · April 25, 2023, 5:44am

Hi allenn_farcas007,

What’s your carrier board for Orin Nano?

Could you help to share the result of following command on your board?

$ls -l /dev/

allenn_farcas007 · April 25, 2023, 6:03am

Sure thing,

The Jetson Orin Nano was purchased from ARROW (link) from the official NVIDIA purchasing page since ARROW is the only one with “Buy now” option, while other options are on “Pre-order” only.

Here is the output of $ls -l /dev

total 0
crw-r--r--  1 root root     10, 235 Apr 24 22:46 autofs
drwxr-xr-x  2 root root         640 Apr 24 22:46 block
crw-------  1 root root     10, 234 Mar 15 10:04 btrfs-control
drwxr-xr-x  3 root root          60 Dec 31  1969 bus
crw-rw----  1 root video   241,   1 Mar 15 10:04 camchar-dbg
crw-rw----  1 root video   241,   0 Mar 15 10:04 camchar-echo
crw-rw----  1 root video   247,   0 Mar 15 10:04 capture-isp-channel0
crw-rw----  1 root video   247,   1 Mar 15 10:04 capture-isp-channel1
crw-rw----  1 root video   247,  10 Mar 15 10:04 capture-isp-channel10
crw-rw----  1 root video   247,  11 Mar 15 10:04 capture-isp-channel11
crw-rw----  1 root video   247,  12 Mar 15 10:04 capture-isp-channel12
crw-rw----  1 root video   247,  13 Mar 15 10:04 capture-isp-channel13
crw-rw----  1 root video   247,  14 Mar 15 10:04 capture-isp-channel14
crw-rw----  1 root video   247,  15 Mar 15 10:04 capture-isp-channel15
crw-rw----  1 root video   247,  16 Mar 15 10:04 capture-isp-channel16
crw-rw----  1 root video   247,  17 Mar 15 10:04 capture-isp-channel17
crw-rw----  1 root video   247,  18 Mar 15 10:04 capture-isp-channel18
crw-rw----  1 root video   247,  19 Mar 15 10:04 capture-isp-channel19
crw-rw----  1 root video   247,   2 Mar 15 10:04 capture-isp-channel2
crw-rw----  1 root video   247,  20 Mar 15 10:04 capture-isp-channel20
crw-rw----  1 root video   247,  21 Mar 15 10:04 capture-isp-channel21
crw-rw----  1 root video   247,  22 Mar 15 10:04 capture-isp-channel22
crw-rw----  1 root video   247,  23 Mar 15 10:04 capture-isp-channel23
crw-rw----  1 root video   247,  24 Mar 15 10:04 capture-isp-channel24
crw-rw----  1 root video   247,  25 Mar 15 10:04 capture-isp-channel25
crw-rw----  1 root video   247,  26 Mar 15 10:04 capture-isp-channel26
crw-rw----  1 root video   247,  27 Mar 15 10:04 capture-isp-channel27
crw-rw----  1 root video   247,  28 Mar 15 10:04 capture-isp-channel28
crw-rw----  1 root video   247,  29 Mar 15 10:04 capture-isp-channel29
crw-rw----  1 root video   247,   3 Mar 15 10:04 capture-isp-channel3
crw-rw----  1 root video   247,  30 Mar 15 10:04 capture-isp-channel30
crw-rw----  1 root video   247,  31 Mar 15 10:04 capture-isp-channel31
crw-rw----  1 root video   247,  32 Mar 15 10:04 capture-isp-channel32
crw-rw----  1 root video   247,  33 Mar 15 10:04 capture-isp-channel33
crw-rw----  1 root video   247,  34 Mar 15 10:04 capture-isp-channel34
crw-rw----  1 root video   247,  35 Mar 15 10:04 capture-isp-channel35
crw-rw----  1 root video   247,  36 Mar 15 10:04 capture-isp-channel36
crw-rw----  1 root video   247,  37 Mar 15 10:04 capture-isp-channel37
crw-rw----  1 root video   247,  38 Mar 15 10:04 capture-isp-channel38
crw-rw----  1 root video   247,  39 Mar 15 10:04 capture-isp-channel39
crw-rw----  1 root video   247,   4 Mar 15 10:04 capture-isp-channel4
crw-rw----  1 root video   247,  40 Mar 15 10:04 capture-isp-channel40
crw-rw----  1 root video   247,  41 Mar 15 10:04 capture-isp-channel41
crw-rw----  1 root video   247,  42 Mar 15 10:04 capture-isp-channel42
crw-rw----  1 root video   247,  43 Mar 15 10:04 capture-isp-channel43
crw-rw----  1 root video   247,  44 Mar 15 10:04 capture-isp-channel44
crw-rw----  1 root video   247,  45 Mar 15 10:04 capture-isp-channel45
crw-rw----  1 root video   247,  46 Mar 15 10:04 capture-isp-channel46
crw-rw----  1 root video   247,  47 Mar 15 10:04 capture-isp-channel47
crw-rw----  1 root video   247,  48 Mar 15 10:04 capture-isp-channel48
crw-rw----  1 root video   247,  49 Mar 15 10:04 capture-isp-channel49
crw-rw----  1 root video   247,   5 Mar 15 10:04 capture-isp-channel5
crw-rw----  1 root video   247,  50 Mar 15 10:04 capture-isp-channel50
crw-rw----  1 root video   247,  51 Mar 15 10:04 capture-isp-channel51
crw-rw----  1 root video   247,  52 Mar 15 10:04 capture-isp-channel52
crw-rw----  1 root video   247,  53 Mar 15 10:04 capture-isp-channel53
crw-rw----  1 root video   247,  54 Mar 15 10:04 capture-isp-channel54
crw-rw----  1 root video   247,  55 Mar 15 10:04 capture-isp-channel55
crw-rw----  1 root video   247,  56 Mar 15 10:04 capture-isp-channel56
crw-rw----  1 root video   247,  57 Mar 15 10:04 capture-isp-channel57
crw-rw----  1 root video   247,  58 Mar 15 10:04 capture-isp-channel58
crw-rw----  1 root video   247,  59 Mar 15 10:04 capture-isp-channel59
crw-rw----  1 root video   247,   6 Mar 15 10:04 capture-isp-channel6
crw-rw----  1 root video   247,  60 Mar 15 10:04 capture-isp-channel60
crw-rw----  1 root video   247,  61 Mar 15 10:04 capture-isp-channel61
crw-rw----  1 root video   247,  62 Mar 15 10:04 capture-isp-channel62
crw-rw----  1 root video   247,  63 Mar 15 10:04 capture-isp-channel63
crw-rw----  1 root video   247,   7 Mar 15 10:04 capture-isp-channel7
crw-rw----  1 root video   247,   8 Mar 15 10:04 capture-isp-channel8
crw-rw----  1 root video   247,   9 Mar 15 10:04 capture-isp-channel9
crw-rw----  1 root video   248,   0 Apr 24 22:46 capture-vi-channel0
crw-rw----  1 root video   248,   1 Apr 24 22:46 capture-vi-channel1
crw-rw----  1 root video   248,  10 Apr 24 22:46 capture-vi-channel10
crw-rw----  1 root video   248,  11 Apr 24 22:46 capture-vi-channel11
crw-rw----  1 root video   248,  12 Apr 24 22:46 capture-vi-channel12
crw-rw----  1 root video   248,  13 Apr 24 22:46 capture-vi-channel13
crw-rw----  1 root video   248,  14 Apr 24 22:46 capture-vi-channel14
crw-rw----  1 root video   248,  15 Apr 24 22:46 capture-vi-channel15
crw-rw----  1 root video   248,  16 Apr 24 22:46 capture-vi-channel16
crw-rw----  1 root video   248,  17 Apr 24 22:46 capture-vi-channel17
crw-rw----  1 root video   248,  18 Apr 24 22:46 capture-vi-channel18
crw-rw----  1 root video   248,  19 Apr 24 22:46 capture-vi-channel19
crw-rw----  1 root video   248,   2 Apr 24 22:46 capture-vi-channel2
crw-rw----  1 root video   248,  20 Apr 24 22:46 capture-vi-channel20
crw-rw----  1 root video   248,  21 Apr 24 22:46 capture-vi-channel21
crw-rw----  1 root video   248,  22 Apr 24 22:46 capture-vi-channel22
crw-rw----  1 root video   248,  23 Apr 24 22:46 capture-vi-channel23
crw-rw----  1 root video   248,  24 Apr 24 22:46 capture-vi-channel24
crw-rw----  1 root video   248,  25 Apr 24 22:46 capture-vi-channel25
crw-rw----  1 root video   248,  26 Apr 24 22:46 capture-vi-channel26
crw-rw----  1 root video   248,  27 Apr 24 22:46 capture-vi-channel27
crw-rw----  1 root video   248,  28 Apr 24 22:46 capture-vi-channel28
crw-rw----  1 root video   248,  29 Apr 24 22:46 capture-vi-channel29
crw-rw----  1 root video   248,   3 Apr 24 22:46 capture-vi-channel3
crw-rw----  1 root video   248,  30 Apr 24 22:46 capture-vi-channel30
crw-rw----  1 root video   248,  31 Apr 24 22:46 capture-vi-channel31
crw-rw----  1 root video   248,  32 Apr 24 22:46 capture-vi-channel32
crw-rw----  1 root video   248,  33 Apr 24 22:46 capture-vi-channel33
crw-rw----  1 root video   248,  34 Apr 24 22:46 capture-vi-channel34
crw-rw----  1 root video   248,  35 Apr 24 22:46 capture-vi-channel35
crw-rw----  1 root video   248,  36 Apr 24 22:46 capture-vi-channel36
crw-rw----  1 root video   248,  37 Apr 24 22:46 capture-vi-channel37
crw-rw----  1 root video   248,  38 Apr 24 22:46 capture-vi-channel38
crw-rw----  1 root video   248,  39 Apr 24 22:46 capture-vi-channel39
crw-rw----  1 root video   248,   4 Apr 24 22:46 capture-vi-channel4
crw-rw----  1 root video   248,  40 Apr 24 22:46 capture-vi-channel40
crw-rw----  1 root video   248,  41 Apr 24 22:46 capture-vi-channel41
crw-rw----  1 root video   248,  42 Apr 24 22:46 capture-vi-channel42
crw-rw----  1 root video   248,  43 Apr 24 22:46 capture-vi-channel43
crw-rw----  1 root video   248,  44 Apr 24 22:46 capture-vi-channel44
crw-rw----  1 root video   248,  45 Apr 24 22:46 capture-vi-channel45
crw-rw----  1 root video   248,  46 Apr 24 22:46 capture-vi-channel46
crw-rw----  1 root video   248,  47 Apr 24 22:46 capture-vi-channel47
crw-rw----  1 root video   248,  48 Apr 24 22:46 capture-vi-channel48
crw-rw----  1 root video   248,  49 Apr 24 22:46 capture-vi-channel49
crw-rw----  1 root video   248,   5 Apr 24 22:46 capture-vi-channel5
crw-rw----  1 root video   248,  50 Apr 24 22:46 capture-vi-channel50
crw-rw----  1 root video   248,  51 Apr 24 22:46 capture-vi-channel51
crw-rw----  1 root video   248,  52 Apr 24 22:46 capture-vi-channel52
crw-rw----  1 root video   248,  53 Apr 24 22:46 capture-vi-channel53
crw-rw----  1 root video   248,  54 Apr 24 22:46 capture-vi-channel54
crw-rw----  1 root video   248,  55 Apr 24 22:46 capture-vi-channel55
crw-rw----  1 root video   248,  56 Apr 24 22:46 capture-vi-channel56
crw-rw----  1 root video   248,  57 Apr 24 22:46 capture-vi-channel57
crw-rw----  1 root video   248,  58 Apr 24 22:46 capture-vi-channel58
crw-rw----  1 root video   248,  59 Apr 24 22:46 capture-vi-channel59
crw-rw----  1 root video   248,   6 Apr 24 22:46 capture-vi-channel6
crw-rw----  1 root video   248,  60 Apr 24 22:46 capture-vi-channel60
crw-rw----  1 root video   248,  61 Apr 24 22:46 capture-vi-channel61
crw-rw----  1 root video   248,  62 Apr 24 22:46 capture-vi-channel62
crw-rw----  1 root video   248,  63 Apr 24 22:46 capture-vi-channel63
crw-rw----  1 root video   248,  64 Apr 24 22:46 capture-vi-channel64
crw-rw----  1 root video   248,  65 Apr 24 22:46 capture-vi-channel65
crw-rw----  1 root video   248,  66 Apr 24 22:46 capture-vi-channel66
crw-rw----  1 root video   248,  67 Apr 24 22:46 capture-vi-channel67
crw-rw----  1 root video   248,  68 Apr 24 22:46 capture-vi-channel68
crw-rw----  1 root video   248,  69 Apr 24 22:46 capture-vi-channel69
crw-rw----  1 root video   248,   7 Apr 24 22:46 capture-vi-channel7
crw-rw----  1 root video   248,  70 Apr 24 22:46 capture-vi-channel70
crw-rw----  1 root video   248,  71 Apr 24 22:46 capture-vi-channel71
crw-rw----  1 root video   248,   8 Apr 24 22:46 capture-vi-channel8
crw-rw----  1 root video   248,   9 Apr 24 22:46 capture-vi-channel9
drwxr-xr-x  2 root root        8740 Apr 24 22:46 char
crw-------  1 root root      5,   1 Apr 24 22:46 console
crw-------  1 root root     10,  58 Apr 24 22:46 cpu_dma_latency
crw-------  1 root root     10, 203 Mar 15 10:04 cuse
drwxr-xr-x  8 root root         160 Apr 24 22:46 disk
drwxr-xr-x  2 root root          80 Dec 31  1969 dma_heap
crw-------  1 root root     10,  61 Apr 24 22:46 efi_capsule_loader
crw-rw----  1 root video    29,   0 Apr 24 22:46 fb0
lrwxrwxrwx  1 root root          13 Mar 15 10:04 fd -> /proc/self/fd
crw-rw-rw-  1 root root      1,   7 Apr 24 22:46 full
crw-rw-rw-  1 root root     10, 229 Apr 24 22:46 fuse
crw-rw----  1 root gpio    254,   0 Mar 15 10:04 gpiochip0
crw-rw----  1 root gpio    254,   1 Apr 24 22:46 gpiochip1
crw-------  1 root root    510,   0 Apr 24 22:46 hidraw0
crw-------  1 root root    510,   1 Apr 24 22:46 hidraw1
crw-------  1 root root    510,   2 Apr 24 22:46 hidraw2
drwxr-xr-x  2 root root           0 Mar 15 10:04 hugepages
crw-rw----  1 root i2c      89,   0 Mar 15 10:04 i2c-0
crw-rw----  1 root i2c      89,   1 Apr 24 22:46 i2c-1
crw-rw----  1 root i2c      89,  10 Mar 15 10:04 i2c-10
crw-rw----  1 root i2c      89,  11 Apr 24 22:46 i2c-11
crw-rw----  1 root i2c      89,   2 Mar 15 10:04 i2c-2
crw-rw----  1 root i2c      89,   3 Mar 15 10:04 i2c-3
crw-rw----  1 root i2c      89,   4 Apr 24 22:46 i2c-4
crw-rw----  1 root i2c      89,   5 Mar 15 10:04 i2c-5
crw-rw----  1 root i2c      89,   6 Mar 15 10:04 i2c-6
crw-rw----  1 root i2c      89,   7 Mar 15 10:04 i2c-7
crw-rw----  1 root i2c      89,   8 Mar 15 10:04 i2c-8
crw-rw----  1 root i2c      89,   9 Mar 15 10:04 i2c-9
lrwxrwxrwx  1 root root          12 Mar 15 10:04 initctl -> /run/initctl
drwxr-xr-x  4 root root         280 Apr 24 22:46 input
crw-r--r--  1 root root      1,  11 Apr 24 22:46 kmsg
crw-rw----+ 1 root kvm      10, 232 Apr 24 22:46 kvm
crw-rw----  1 root video    10,  59 Apr 24 22:46 l3cache
lrwxrwxrwx  1 root root          28 Mar 15 10:04 log -> /run/systemd/journal/dev-log
brw-rw----  1 root disk      7,   0 Apr 24 22:46 loop0
brw-rw----  1 root disk      7,   1 Apr 24 22:46 loop1
brw-rw----  1 root disk      7,   2 Apr 24 22:46 loop2
brw-rw----  1 root disk      7,   3 Apr 24 22:46 loop3
brw-rw----  1 root disk      7,   4 Apr 24 22:46 loop4
brw-rw----  1 root disk      7,   5 Apr 24 22:46 loop5
brw-rw----  1 root disk      7,   6 Apr 24 22:46 loop6
brw-rw----  1 root disk      7,   7 Apr 24 22:46 loop7
brw-rw----  1 root disk      7,   8 Apr 24 22:46 loop8
crw-rw----  1 root disk     10, 237 Apr 24 22:46 loop-control
drwxr-xr-x  2 root root          60 Dec 31  1969 mapper
crw-rw----  1 root video   249,   0 Apr 24 22:46 media0
crw-r-----  1 root kmem      1,   1 Apr 24 22:46 mem
brw-rw----  1 root disk    179,   0 Mar 15 10:04 mmcblk1
brw-rw----  1 root disk    179,   1 Apr 24 22:46 mmcblk1p1
brw-rw----  1 root disk    179,  10 Apr 24 22:46 mmcblk1p10
brw-rw----  1 root disk    179,  11 Apr 24 22:46 mmcblk1p11
brw-rw----  1 root disk    179,  12 Apr 24 22:46 mmcblk1p12
brw-rw----  1 root disk    179,  13 Apr 24 22:46 mmcblk1p13
brw-rw----  1 root disk    179,  14 Apr 24 22:46 mmcblk1p14
brw-rw----  1 root disk    179,   2 Apr 24 22:46 mmcblk1p2
brw-rw----  1 root disk    179,   3 Apr 24 22:46 mmcblk1p3
brw-rw----  1 root disk    179,   4 Apr 24 22:46 mmcblk1p4
brw-rw----  1 root disk    179,   5 Apr 24 22:46 mmcblk1p5
brw-rw----  1 root disk    179,   6 Apr 24 22:46 mmcblk1p6
brw-rw----  1 root disk    179,   7 Apr 24 22:46 mmcblk1p7
brw-rw----  1 root disk    179,   8 Apr 24 22:46 mmcblk1p8
brw-rw----  1 root disk    179,   9 Apr 24 22:46 mmcblk1p9
drwxrwxrwt  2 root root          40 Dec 31  1969 mqueue
drwxr-xr-x  2 root root          60 Dec 31  1969 net
crw-rw-rw-  1 root root      1,   3 Apr 24 22:46 null
drwxr-xr-x  3 root root          60 Mar 15 10:04 nvgpu
crw-rw----  1 root video   504,   0 Apr 24 22:46 nvhost-as-gpu
crw-rw----  1 root video   508,   0 Mar 15 10:04 nvhost-ctrl
crw-rw----  1 root video   504,   2 Apr 24 22:46 nvhost-ctrl-gpu
crw-rw----  1 root video   508,  46 Mar 15 10:04 nvhost-ctrl-isp
crw-rw----  1 root video   508,  22 Mar 15 10:04 nvhost-ctrl-nvdec
crw-rw----  1 root debug   504,   3 Apr 24 22:46 nvhost-ctxsw-gpu
crw-rw----  1 root debug   504,   4 Apr 24 22:46 nvhost-dbg-gpu
crw-rw----  1 root video   504,   1 Apr 24 22:46 nvhost-gpu
crw-rw----  1 root video   508,  45 Mar 15 10:04 nvhost-isp
crw-rw----  1 root video   508,  41 Mar 15 10:04 nvhost-isp-thi
crw-rw----  1 root video   508,  13 Mar 15 10:04 nvhost-msenc
crw-rw----  1 root video   508,  29 Mar 15 10:04 nvhost-nvcsi
crw-rw----  1 root video   508,  21 Mar 15 10:04 nvhost-nvdec
crw-rw----  1 root video   508,   5 Mar 15 10:04 nvhost-nvjpg
crw-rw----  1 root video   508,   9 Mar 15 10:04 nvhost-nvjpg1
crw-rw----  1 root video   504,   9 Apr 24 22:46 nvhost-nvsched-gpu
crw-rw----  1 root video   508,  17 Mar 15 10:04 nvhost-ofa
crw-rw----  1 root video   507,   0 Mar 15 10:04 nvhost-power-gpu
crw-rw----  1 root debug   504,   6 Apr 24 22:46 nvhost-prof-ctx-gpu
crw-rw----  1 root debug   504,   7 Apr 24 22:46 nvhost-prof-dev-gpu
crw-rw----  1 root debug   504,   5 Apr 24 22:46 nvhost-prof-gpu
crw-rw----  1 root root    504,   8 Apr 24 22:46 nvhost-sched-gpu
crw-rw----  1 root video   508,  25 Mar 15 10:04 nvhost-tsec
crw-rw----  1 root video   504,  10 Apr 24 22:46 nvhost-tsg-gpu
crw-rw----  1 root video   508,  49 Mar 15 10:04 nvhost-vi0
crw-rw----  1 root video   508,  33 Mar 15 10:04 nvhost-vi0-thi
crw-rw----  1 root video   508,  53 Mar 15 10:04 nvhost-vi1
crw-rw----  1 root video   508,  37 Mar 15 10:04 nvhost-vi1-thi
crw-rw----  1 root video   508,   1 Mar 15 10:04 nvhost-vic
crw-rw-rw-  1 root root    195,   0 Apr 24 22:46 nvidia0
crw-rw-rw-  1 root root    195, 255 Apr 24 22:46 nvidiactl
crw-rw-rw-  1 root root    195, 254 Apr 24 22:46 nvidia-modeset
crw-rw----  1 root video    10,  55 Apr 24 22:46 nvmap
crw-rw-rw-  1 root root    236,   0 Apr 24 22:46 nvsciipc
crw-r-----  1 root kmem      1,   4 Apr 24 22:46 port
crw-------  1 root root    108,   0 Apr 24 22:46 ppp
crw-rw-rw-  1 root tty       5,   2 Apr 25 01:00 ptmx
drwxr-xr-x  2 root root           0 Mar 15 10:04 pts
crw-------  1 root root      2,   0 Apr 24 22:46 ptyp0
crw-------  1 root root      2,   1 Apr 24 22:46 ptyp1
crw-------  1 root root      2,   2 Apr 24 22:46 ptyp2
crw-------  1 root root      2,   3 Apr 24 22:46 ptyp3
crw-------  1 root root      2,   4 Apr 24 22:46 ptyp4
crw-------  1 root root      2,   5 Apr 24 22:46 ptyp5
crw-------  1 root root      2,   6 Apr 24 22:46 ptyp6
crw-------  1 root root      2,   7 Apr 24 22:46 ptyp7
crw-------  1 root root      2,   8 Apr 24 22:46 ptyp8
crw-------  1 root root      2,   9 Apr 24 22:46 ptyp9
crw-------  1 root root      2,  10 Apr 24 22:46 ptypa
crw-------  1 root root      2,  11 Apr 24 22:46 ptypb
crw-------  1 root root      2,  12 Apr 24 22:46 ptypc
crw-------  1 root root      2,  13 Apr 24 22:46 ptypd
crw-------  1 root root      2,  14 Apr 24 22:46 ptype
crw-------  1 root root      2,  15 Apr 24 22:46 ptypf
crw-------  1 root root     10,  63 Apr 24 22:46 quadd
crw-------  1 root root     10,  62 Apr 24 22:46 quadd_auth
crw-rw-rw-  1 root root      1,   8 Apr 24 22:46 random
crw-rw-r--+ 1 root root     10, 242 Apr 24 22:46 rfkill
lrwxrwxrwx  1 root root           4 Apr 24 22:46 rtc -> rtc1
crw-------  1 root root    250,   0 Apr 24 22:46 rtc0
crw-------  1 root root    250,   1 Mar 15 10:04 rtc1
drwxrwxrwt  2 root root          40 Apr 24 22:47 shm
drwxr-xr-x  3 root root        1120 Apr 24 22:46 snd
lrwxrwxrwx  1 root root          15 Mar 15 10:04 stderr -> /proc/self/fd/2
lrwxrwxrwx  1 root root          15 Mar 15 10:04 stdin -> /proc/self/fd/0
lrwxrwxrwx  1 root root          15 Mar 15 10:04 stdout -> /proc/self/fd/1
crw-------  1 root root    243,   0 Apr 24 22:46 tee0
crw-------  1 root root    243,  16 Apr 24 22:46 teepriv0
crw-rw----  1 root video    10,  57 Apr 24 22:46 tegra_camera_ctrl
crw-rw----  1 root crypto   10,  56 Apr 24 22:46 tegra-crypto
crw-------  1 root root     10,  60 Apr 24 22:46 tegra-nvvse-crypto
crw-rw----  1 root debug   509,   0 Apr 24 22:46 tegra-soc-hwpm
crw-rw-rw-  1 root tty       5,   0 Apr 24 22:46 tty
crw--w----  1 root tty       4,   0 Apr 24 22:46 tty0
crw--w----  1 root tty       4,   1 Apr 24 22:46 tty1
crw--w----  1 root tty       4,  10 Apr 24 22:46 tty10
crw--w----  1 root tty       4,  11 Apr 24 22:46 tty11
crw--w----  1 root tty       4,  12 Apr 24 22:46 tty12
crw--w----  1 root tty       4,  13 Apr 24 22:46 tty13
crw--w----  1 root tty       4,  14 Apr 24 22:46 tty14
crw--w----  1 root tty       4,  15 Apr 24 22:46 tty15
crw--w----  1 root tty       4,  16 Apr 24 22:46 tty16
crw--w----  1 root tty       4,  17 Apr 24 22:46 tty17
crw--w----  1 root tty       4,  18 Apr 24 22:46 tty18
crw--w----  1 root tty       4,  19 Apr 24 22:46 tty19
crw--w----  1 orin tty       4,   2 Apr 24 22:46 tty2
crw--w----  1 root tty       4,  20 Apr 24 22:46 tty20
crw--w----  1 root tty       4,  21 Apr 24 22:46 tty21
crw--w----  1 root tty       4,  22 Apr 24 22:46 tty22
crw--w----  1 root tty       4,  23 Apr 24 22:46 tty23
crw--w----  1 root tty       4,  24 Apr 24 22:46 tty24
crw--w----  1 root tty       4,  25 Apr 24 22:46 tty25
crw--w----  1 root tty       4,  26 Apr 24 22:46 tty26
crw--w----  1 root tty       4,  27 Apr 24 22:46 tty27
crw--w----  1 root tty       4,  28 Apr 24 22:46 tty28
crw--w----  1 root tty       4,  29 Apr 24 22:46 tty29
crw--w----  1 root tty       4,   3 Apr 24 22:46 tty3
crw--w----  1 root tty       4,  30 Apr 24 22:46 tty30
crw--w----  1 root tty       4,  31 Apr 24 22:46 tty31
crw--w----  1 root tty       4,  32 Apr 24 22:46 tty32
crw--w----  1 root tty       4,  33 Apr 24 22:46 tty33
crw--w----  1 root tty       4,  34 Apr 24 22:46 tty34
crw--w----  1 root tty       4,  35 Apr 24 22:46 tty35
crw--w----  1 root tty       4,  36 Apr 24 22:46 tty36
crw--w----  1 root tty       4,  37 Apr 24 22:46 tty37
crw--w----  1 root tty       4,  38 Apr 24 22:46 tty38
crw--w----  1 root tty       4,  39 Apr 24 22:46 tty39
crw--w----  1 root tty       4,   4 Apr 24 22:46 tty4
crw--w----  1 root tty       4,  40 Apr 24 22:46 tty40
crw--w----  1 root tty       4,  41 Apr 24 22:46 tty41
crw--w----  1 root tty       4,  42 Apr 24 22:46 tty42
crw--w----  1 root tty       4,  43 Apr 24 22:46 tty43
crw--w----  1 root tty       4,  44 Apr 24 22:46 tty44
crw--w----  1 root tty       4,  45 Apr 24 22:46 tty45
crw--w----  1 root tty       4,  46 Apr 24 22:46 tty46
crw--w----  1 root tty       4,  47 Apr 24 22:46 tty47
crw--w----  1 root tty       4,  48 Apr 24 22:46 tty48
crw--w----  1 root tty       4,  49 Apr 24 22:46 tty49
crw--w----  1 root tty       4,   5 Apr 24 22:46 tty5
crw--w----  1 root tty       4,  50 Apr 24 22:46 tty50
crw--w----  1 root tty       4,  51 Apr 24 22:46 tty51
crw--w----  1 root tty       4,  52 Apr 24 22:46 tty52
crw--w----  1 root tty       4,  53 Apr 24 22:46 tty53
crw--w----  1 root tty       4,  54 Apr 24 22:46 tty54
crw--w----  1 root tty       4,  55 Apr 24 22:46 tty55
crw--w----  1 root tty       4,  56 Apr 24 22:46 tty56
crw--w----  1 root tty       4,  57 Apr 24 22:46 tty57
crw--w----  1 root tty       4,  58 Apr 24 22:46 tty58
crw--w----  1 root tty       4,  59 Apr 24 22:46 tty59
crw--w----  1 root tty       4,   6 Apr 24 22:46 tty6
crw--w----  1 root tty       4,  60 Apr 24 22:46 tty60
crw--w----  1 root tty       4,  61 Apr 24 22:46 tty61
crw--w----  1 root tty       4,  62 Apr 24 22:46 tty62
crw--w----  1 root tty       4,  63 Apr 24 22:46 tty63
crw--w----  1 root tty       4,   7 Apr 24 22:46 tty7
crw--w----  1 root tty       4,   8 Apr 24 22:46 tty8
crw--w----  1 root tty       4,   9 Apr 24 22:46 tty9
crw--w----  1 root tty     204,  64 Apr 24 22:46 ttyAMA0
crw--w----  1 root tty     234,   0 Apr 24 22:46 ttyGS0
crw-------  1 root root      3,   0 Apr 24 22:46 ttyp0
crw-------  1 root root      3,   1 Apr 24 22:46 ttyp1
crw-------  1 root root      3,   2 Apr 24 22:46 ttyp2
crw-------  1 root root      3,   3 Apr 24 22:46 ttyp3
crw-------  1 root root      3,   4 Apr 24 22:46 ttyp4
crw-------  1 root root      3,   5 Apr 24 22:46 ttyp5
crw-------  1 root root      3,   6 Apr 24 22:46 ttyp6
crw-------  1 root root      3,   7 Apr 24 22:46 ttyp7
crw-------  1 root root      3,   8 Apr 24 22:46 ttyp8
crw-------  1 root root      3,   9 Apr 24 22:46 ttyp9
crw-------  1 root root      3,  10 Apr 24 22:46 ttypa
crw-------  1 root root      3,  11 Apr 24 22:46 ttypb
crw-------  1 root root      3,  12 Apr 24 22:46 ttypc
crw-------  1 root root      3,  13 Apr 24 22:46 ttypd
crw-------  1 root root      3,  14 Apr 24 22:46 ttype
crw-------  1 root root      3,  15 Apr 24 22:46 ttypf
crw-rw----  1 root dialout   4,  64 Apr 24 22:46 ttyS0
crw-rw----  1 root dialout   4,  65 Apr 24 22:46 ttyS1
crw-rw----  1 root dialout   4,  66 Apr 24 22:46 ttyS2
crw-rw----  1 root dialout   4,  67 Apr 24 22:46 ttyS3
crw--w----  1 root tty     238,   0 Apr 24 22:46 ttyTCU0
crw-rw----  1 root dialout 239,   0 Mar 15 10:04 ttyTHS0
crw-rw----  1 root dialout 239,   3 Mar 15 10:04 ttyTHS3
crw-rw----  1 root dialout 239,   4 Mar 15 10:04 ttyTHS4
crw-------  1 root root     10, 239 Apr 24 22:46 uhid
crw-------  1 root root     10, 223 Apr 24 22:46 uinput
crw-rw-rw-  1 root root      1,   9 Apr 24 22:46 urandom
drwxr-xr-x  2 root root          60 Apr 24 22:46 usb
crw-rw----  1 root tty       7,   0 Apr 24 22:46 vcs
crw-rw----  1 root tty       7,   1 Apr 24 22:46 vcs1
crw-rw----  1 root tty       7,   2 Apr 24 22:46 vcs2
crw-rw----  1 root tty       7,   3 Apr 24 22:46 vcs3
crw-rw----  1 root tty       7,   4 Apr 24 22:46 vcs4
crw-rw----  1 root tty       7,   5 Apr 24 22:46 vcs5
crw-rw----  1 root tty       7,   6 Apr 24 22:46 vcs6
crw-rw----  1 root tty       7, 128 Apr 24 22:46 vcsa
crw-rw----  1 root tty       7, 129 Apr 24 22:46 vcsa1
crw-rw----  1 root tty       7, 130 Apr 24 22:46 vcsa2
crw-rw----  1 root tty       7, 131 Apr 24 22:46 vcsa3
crw-rw----  1 root tty       7, 132 Apr 24 22:46 vcsa4
crw-rw----  1 root tty       7, 133 Apr 24 22:46 vcsa5
crw-rw----  1 root tty       7, 134 Apr 24 22:46 vcsa6
crw-rw----  1 root tty       7,  64 Apr 24 22:46 vcsu
crw-rw----  1 root tty       7,  65 Apr 24 22:46 vcsu1
crw-rw----  1 root tty       7,  66 Apr 24 22:46 vcsu2
crw-rw----  1 root tty       7,  67 Apr 24 22:46 vcsu3
crw-rw----  1 root tty       7,  68 Apr 24 22:46 vcsu4
crw-rw----  1 root tty       7,  69 Apr 24 22:46 vcsu5
crw-rw----  1 root tty       7,  70 Apr 24 22:46 vcsu6
drwxr-xr-x  2 root root          60 Mar 15 10:04 vfio
crw-------  1 root root     10, 137 Mar 15 10:04 vhci
crw-------  1 root root     10, 130 Apr 24 22:46 watchdog
crw-------  1 root root    242,   0 Apr 24 22:46 watchdog0
crw-rw-rw-  1 root root      1,   5 Apr 24 22:46 zero
brw-rw----  1 root disk    251,   0 Apr 24 22:46 zram0
brw-rw----  1 root disk    251,   1 Apr 24 22:46 zram1
brw-rw----  1 root disk    251,   2 Apr 24 22:46 zram2
brw-rw----  1 root disk    251,   3 Apr 24 22:46 zram3
brw-rw----  1 root disk    251,   4 Apr 24 22:46 zram4
brw-rw----  1 root disk    251,   5 Apr 24 22:46 zram5

KevinFFF · April 25, 2023, 9:58am

Have you tried current Jetpack 5.1.1(R35.3.1)?

Why you use /dev/serial0 node and it seems not exist under /dev?

allenn_farcas007 · April 25, 2023, 4:36pm

The output of cat /etc/nv_tegra_release is

# R35 (release), REVISION: 3.1, GCID: 32827747, BOARD: t186ref, EABI: aarch64, DATE: Sun Mar 19 15:19:21 UTC 2023

So I guess I am using the current Jetpack.

I think within the serial library the buildhat tries to access /dev/serial0 but not sure:

Why it doesn’t exist?
How to properly enable serial (for example like on Raspberry Pi when you have raspi-config and you can disable serial console and enable serial port)

KevinFFF · April 26, 2023, 8:26am

Serial should be configured from pinmux table and also enabled in device tree.
It depends on which serial interface you want to use, you could refer to the dmesg and grep with string of serial for details.

Or you could refer to the following thread for UART in Orin series.
OrinNX : How to check UART is working? - #3 by KevinFFF

allenn_farcas007 · April 27, 2023, 3:48am

Whe I connect the Raspberry Pi build HAT to the Raspberry Pi, I see the following output for sudo cat /sys/kernel/debug/gpio:

gpiochip0: GPIOs 0-57, parent: platform/fe200000.gpio, pinctrl-bcm2711:
 gpio-0   (ID_SDA              )
 gpio-1   (ID_SCL              )
 gpio-2   (SDA1                )
 gpio-3   (SCL1                )
 gpio-4   (GPIO_GCLK           )
 gpio-5   (GPIO5               )
 gpio-6   (GPIO6               )
 gpio-7   (SPI_CE1_N           )
 gpio-8   (SPI_CE0_N           )
 gpio-9   (SPI_MISO            )
 gpio-10  (SPI_MOSI            )
 gpio-11  (SPI_SCLK            )
 gpio-12  (GPIO12              )
 gpio-13  (GPIO13              )
 gpio-14  (TXD1                )
 gpio-15  (RXD1                )
 gpio-16  (GPIO16              )
 gpio-17  (GPIO17              )
 gpio-18  (GPIO18              )
 gpio-19  (GPIO19              )
 gpio-20  (GPIO20              )
 gpio-21  (GPIO21              )
 gpio-22  (GPIO22              )
 gpio-23  (GPIO23              )
 gpio-24  (GPIO24              )
 gpio-25  (GPIO25              )
 gpio-26  (GPIO26              )
 gpio-27  (GPIO27              )
 gpio-28  (RGMII_MDIO          )
 gpio-29  (RGMIO_MDC           )
 gpio-30  (CTS0                )
 gpio-31  (RTS0                )
 gpio-32  (TXD0                )
 gpio-33  (RXD0                )
 gpio-34  (SD1_CLK             )
 gpio-35  (SD1_CMD             )
 gpio-36  (SD1_DATA0           )
 gpio-37  (SD1_DATA1           )
 gpio-38  (SD1_DATA2           )
 gpio-39  (SD1_DATA3           )
 gpio-40  (PWM0_MISO           )
 gpio-41  (PWM1_MOSI           )
 gpio-42  (STATUS_LED_G_CLK    |ACT                 ) out hi 
 gpio-43  (SPIFLASH_CE_N       )
 gpio-44  (SDA0                )
 gpio-45  (SCL0                )
 gpio-46  (RGMII_RXCLK         )
 gpio-47  (RGMII_RXCTL         )
 gpio-48  (RGMII_RXD0          )
 gpio-49  (RGMII_RXD1          )
 gpio-50  (RGMII_RXD2          )
 gpio-51  (RGMII_RXD3          )
 gpio-52  (RGMII_TXCLK         )
 gpio-53  (RGMII_TXCTL         )
 gpio-54  (RGMII_TXD0          )
 gpio-55  (RGMII_TXD1          )
 gpio-56  (RGMII_TXD2          )
 gpio-57  (RGMII_TXD3          )

gpiochip1: GPIOs 504-511, parent: platform/soc:firmware:gpio, raspberrypi-exp-gpio, can sleep:
 gpio-504 (BT_ON               )
 gpio-505 (WL_ON               )
 gpio-506 (PWR_LED_OFF         |PWR                 ) out lo ACTIVE LOW
 gpio-507 (GLOBAL_RESET        )
 gpio-508 (VDD_SD_IO_SEL       |vdd-sd-io           ) out hi 
 gpio-509 (CAM_GPIO            |cam1_regulator      ) out lo 
 gpio-510 (SD_PWR_ON           |sd_vcc_reg          ) out hi 
 gpio-511 (SD_OC_N             )

Whereas, when I connect the Build HAT to the Jetson Orin Nano, I get the following output for the same command:

gpiochip1: GPIOs 316-347, parent: platform/c2f0000.gpio, tegra234-gpio-aon:
 gpio-316 (PAA.00              )
 gpio-317 (PAA.01              )
 gpio-318 (PAA.02              )
 gpio-319 (PAA.03              )
 gpio-320 (PAA.04              )
 gpio-321 (PAA.05              |fixed-regulators:reg) out hi 
 gpio-322 (PAA.06              )
 gpio-323 (PAA.07              )
 gpio-324 (PBB.00              )
 gpio-325 (PBB.01              )
 gpio-326 (PBB.02              )
 gpio-327 (PBB.03              )
 gpio-328 (PCC.00              )
 gpio-329 (PCC.01              )
 gpio-330 (PCC.02              )
 gpio-331 (PCC.03              |mux                 ) out hi 
 gpio-332 (PCC.04              )
 gpio-333 (PCC.05              )
 gpio-334 (PCC.06              )
 gpio-335 (PCC.07              )
 gpio-336 (PDD.00              )
 gpio-337 (PDD.01              )
 gpio-338 (PDD.02              )
 gpio-339 (PEE.00              )
 gpio-340 (PEE.01              )
 gpio-341 (PEE.02              )
 gpio-342 (PEE.03              )
 gpio-343 (PEE.04              |power-key           ) in  hi IRQ ACTIVE LOW
 gpio-344 (PEE.05              )
 gpio-345 (PEE.06              )
 gpio-346 (PEE.07              )
 gpio-347 (PGG.00              )
gpiochip0: GPIOs 348-511, parent: platform/2200000.gpio, tegra234-gpio:
 gpio-348 (PA.00               |fixed-regulators:reg) out hi 
 gpio-349 (PA.01               )
 gpio-350 (PA.02               )
 gpio-351 (PA.03               )
 gpio-352 (PA.04               )
 gpio-353 (PA.05               )
 gpio-354 (PA.06               )
 gpio-355 (PA.07               )
 gpio-356 (PB.00               )
 gpio-357 (PC.00               )
 gpio-358 (PC.01               )
 gpio-359 (PC.02               )
 gpio-360 (PC.03               )
 gpio-361 (PC.04               )
 gpio-362 (PC.05               )
 gpio-363 (PC.06               )
 gpio-364 (PC.07               )
 gpio-365 (PD.00               )
 gpio-366 (PD.01               )
 gpio-367 (PD.02               )
 gpio-368 (PD.03               )
 gpio-369 (PE.00               )
 gpio-370 (PE.01               )
 gpio-371 (PE.02               )
 gpio-372 (PE.03               )
 gpio-373 (PE.04               )
 gpio-374 (PE.05               )
 gpio-375 (PE.06               )
 gpio-376 (PE.07               )
 gpio-377 (PF.00               )
 gpio-378 (PF.01               )
 gpio-379 (PF.02               )
 gpio-380 (PF.03               )
 gpio-381 (PF.04               )
 gpio-382 (PF.05               )
 gpio-383 (PG.00               |force-recovery      ) in  hi IRQ ACTIVE LOW
 gpio-384 (PG.01               )
 gpio-385 (PG.02               )
 gpio-386 (PG.03               )
 gpio-387 (PG.04               )
 gpio-388 (PG.05               )
 gpio-389 (PG.06               )
 gpio-390 (PG.07               |cd                  ) in  lo IRQ 
 gpio-391 (PH.00               )
 gpio-392 (PH.01               )
 gpio-393 (PH.02               )
 gpio-394 (PH.03               )
 gpio-395 (PH.04               )
 gpio-396 (PH.05               )
 gpio-397 (PH.06               )
 gpio-398 (PH.07               )
 gpio-399 (PI.00               )
 gpio-400 (PI.01               )
 gpio-401 (PI.02               )
 gpio-402 (PI.03               )
 gpio-403 (PI.04               )
 gpio-404 (PI.05               )
 gpio-405 (PI.06               )
 gpio-406 (PJ.00               )
 gpio-407 (PJ.01               )
 gpio-408 (PJ.02               )
 gpio-409 (PJ.03               )
 gpio-410 (PJ.04               )
 gpio-411 (PJ.05               )
 gpio-412 (PK.00               )
 gpio-413 (PK.01               )
 gpio-414 (PK.02               )
 gpio-415 (PK.03               )
 gpio-416 (PK.04               )
 gpio-417 (PK.05               )
 gpio-418 (PK.06               )
 gpio-419 (PK.07               )
 gpio-420 (PL.00               )
 gpio-421 (PL.01               )
 gpio-422 (PL.02               |nvidia,pex-wake     ) in  hi ACTIVE LOW
 gpio-423 (PL.03               )
 gpio-424 (PM.00               )
 gpio-425 (PM.01               )
 gpio-426 (PM.02               )
 gpio-427 (PM.03               )
 gpio-428 (PM.04               )
 gpio-429 (PM.05               )
 gpio-430 (PM.06               )
 gpio-431 (PM.07               )
 gpio-432 (PN.00               )
 gpio-433 (PN.01               )
 gpio-434 (PN.02               )
 gpio-435 (PN.03               )
 gpio-436 (PN.04               )
 gpio-437 (PN.05               )
 gpio-438 (PN.06               )
 gpio-439 (PN.07               )
 gpio-440 (PP.00               )
 gpio-441 (PP.01               )
 gpio-442 (PP.02               )
 gpio-443 (PP.03               )
 gpio-444 (PP.04               )
 gpio-445 (PP.05               )
 gpio-446 (PP.06               )
 gpio-447 (PP.07               )
 gpio-448 (PQ.00               )
 gpio-449 (PQ.01               )
 gpio-450 (PQ.02               )
 gpio-451 (PQ.03               )
 gpio-452 (PQ.04               )
 gpio-453 (PQ.05               )
 gpio-454 (PQ.06               )
 gpio-455 (PQ.07               )
 gpio-456 (PR.00               )
 gpio-457 (PR.01               )
 gpio-458 (PR.02               )
 gpio-459 (PR.03               )
 gpio-460 (PR.04               )
 gpio-461 (PR.05               )
 gpio-462 (PX.00               )
 gpio-463 (PX.01               )
 gpio-464 (PX.02               )
 gpio-465 (PX.03               )
 gpio-466 (PX.04               )
 gpio-467 (PX.05               )
 gpio-468 (PX.06               )
 gpio-469 (PX.07               )
 gpio-470 (PY.00               )
 gpio-471 (PY.01               )
 gpio-472 (PY.02               )
 gpio-473 (PY.03               )
 gpio-474 (PY.04               )
 gpio-475 (PY.05               )
 gpio-476 (PY.06               )
 gpio-477 (PY.07               )
 gpio-478 (PZ.00               )
 gpio-479 (PZ.01               )
 gpio-480 (PZ.02               )
 gpio-481 (PZ.03               )
 gpio-482 (PZ.04               )
 gpio-483 (PZ.05               )
 gpio-484 (PZ.06               )
 gpio-485 (PZ.07               )
 gpio-486 (PAC.00              )
 gpio-487 (PAC.01              )
 gpio-488 (PAC.02              )
 gpio-489 (PAC.03              )
 gpio-490 (PAC.04              )
 gpio-491 (PAC.05              )
 gpio-492 (PAC.06              )
 gpio-493 (PAC.07              )
 gpio-494 (PAD.00              )
 gpio-495 (PAD.01              )
 gpio-496 (PAD.02              )
 gpio-497 (PAD.03              )
 gpio-498 (PAE.00              )
 gpio-499 (PAE.01              )
 gpio-500 (PAF.00              )
 gpio-501 (PAF.01              )
 gpio-502 (PAF.02              )
 gpio-503 (PAF.03              )
 gpio-504 (PAG.00              )
 gpio-505 (PAG.01              )
 gpio-506 (PAG.02              )
 gpio-507 (PAG.03              )
 gpio-508 (PAG.04              )
 gpio-509 (PAG.05              )
 gpio-510 (PAG.06              )
 gpio-511 (PAG.07              )

How can I ensure the required pins for the functionality of the Build HAT are connected? I was thinking that maybe using cables I could only connect the required pins, but right now, I am unable to properly identify them.

KevinFFF · April 27, 2023, 9:58am

Sorry, I don’t have experience about connecting “Build HAT”.
You may need to refer to the porting guide of this device about how to drive that? Which pins should be connected and which interface are using for communication?

system · May 30, 2023, 7:36am

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