ul-gh
Unable to open SPI device: No such file or directory
I finally am asking for a bit of help since I cannot solve this myself.
I get this error when running example.py (or benchmark.py): Unable to open SPI device: No such file or directory
The error occurs when executing this line in pipyadc: fd = wp.wiringPiSPISetupMode( conf.SPI_CHANNEL, conf.SPI_FREQUENCY, conf.SPI_MODE)
The values are correct but unable to get past this error.
Pls offer some guidance... THANK YOU!
I know the Waveshare High-Precision AD/DA hardware is running ok as their little demo program works (sudo ./ads1256_test). but I need to run this within PYTHON environment.
thanks again for any help!
Dave
Houston, TX
Dear Dave,
this looks as if the Linux device file is missing - which could be a kernel configuration or kernel version issue.
Can you post the output of the following commands:
ls -l /dev/spi* grep "^dt.*" /boot/config.txt uname -a cat /etc/os-release lsmod
I do not have my Raspberry Pis with the ADC board at hand as I am on Christmas vacation for the next two weeks. Maybe I can borrow one from a friend for testing this. Maybe this is not even necessary.
Let us fix this before Christmas!
Best wishes, Ulrich
Ulrich, THANK YOU so much for fast reply. I've continued working on it and just got it working! Even though the other test program worked... and raspi-config said SPI was ON... I changed the /boot/config.txt file to uncomment dtparam=spi=on andf also added dtoverlay=spi-bcm2835
Not sure which fixed it, but now for the first time... your example.py is working so I can progress!
THANK YOU! I'll keep you posted on my progress. Dave