Hi team,
I use Jetpack version 4.6-b199.
Jetson Nano B01 Dev Kit (I use the hardware Dev Kit version from January 2023).
My setup on Jetson Nano B01:
From the instructions, first fix the init functions:
$ sudo find /opt/nvidia/jetson-io/ -mindepth 1 -maxdepth 1 -type d -exec touch {}/init.py ;
Run jetson-io.py and Enable SPI1.
$ sudo /opt/nvidia/jetson-io/jetson-io.py
Check configured the spi pinmux:
$ sudo cat /sys/kernel/debug/tegra_pinctrl_reg | grep -i spi
$ sudo cat /sys/kernel/debug/tegra_gpio
$ ls /dev/spidev*
Install libraries and software:
$ sudo apt-get update
$ sudo apt-get -y install python3-pip
$ pip3 –version
$ sudo pip3 install Jetson.GPIO
$ sudo apt-get install python-dev
$ sudo apt-get install python3-dev
$ sudo apt-get update
$ sudo apt-get install git
$ git clone GitHub - doceme/py-spidev
$ cd py-spidev
$ sudo apt-get install -y python-setuptools
$ sudo apt-get install -y python3-setuptools
$ sudo python setup.py install
$ sudo python3 setup.py install
$ sudo modprobe spidev
Previously when I used this setup with older versions of Jetson Nano B01 Dev Kit, SPI worked fine, but when I set up and tested with versions from January 2023, SPI didn’t work.
Can you guide me how to fix it?
Thank you so much!
My python code for test SPI:
#!/usr/bin/python3
import spidev
import time
import binascii
spi = spidev.SpiDev() # Tạo đối tượng cho SPI
spi.open(0, 0) # mở port 0, device (CS) 0
spi.max_speed_hz = 500000
try:
while True:
print(“abc”)
resp = spi.xfer2([0x61,0x62,0x63,0xA]) # [‘a’,‘b’,‘c’,‘\n’]
time.sleep(1) # sleep for 1 seconds
except KeyboardInterrupt:
spi.close()
