New answers tagged spi
2
I was able to enable 4 SPI as according to the Forum Post. Enabling SPI0 or SPI1 together with 3-6 doesn't work. Heres my complete /boot/config.txt
#dtoverlay=spi1-1cs
#dtoverlay=spi2-1cs
dtoverlay=spi3-1cs
dtoverlay=spi4-1cs
dtoverlay=spi5-1cs
dtoverlay=spi6-1cs
1
There is no ping command. The best you can do is send a legal command and see a legal response.
I suggest you monitor the SPI bus (MOSI, MISO, SCLK, CS) and check that the correct data is being sent, and if so check that a response is received on MISO.
If you use a bus speed in the 100 kHz region you can use (my) piscope to visualise the bus.
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1
Those modes do not work on the Pi's auxiliary SPI peripheral. This was determined by experiment, I don't know if it is documented.
I have not checked to see if it is still the case for the Pi4B (but I doubt the peripheral has been altered).
See my note at http://abyz.me.uk/rpi/pigpio/cif.html#spiOpen
Warning: modes 1 and 3 do not appear to work on the ...
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