Use SPI1

[liko28s]

Hi guys, we are currently doing a prototype that includes a MFRC522 (Robotdyn) reader and a 3.5 TFT screen from Waveshare, after a few days of fighting while we took the two devices (TFT screen in SPI0 and MFRC522 in SPI1), everything works correctly with but not with this library, we always receive the message Can not open the SPI device: There is no such file or directory but ls /dev/spidev* returns /dev/spidev1.0 any ideas for make wiringpi work in spi1?

[firsttris]

hey sir,

i think your issue is that i initialize wiringPI with channel 0 but you need channel 1 https://github.com/firsttris/mfrc522-rpi/blob/master/index.js#L7

wiringPiSPISetup (int channel, int speed) ;. This is the way to initialise a channel (The Pi has 2 channels; 0 and 1).

regards Tristan

[firsttris]

i will add the possibility to choose the spi channel

[firsttris]

please update to 1.1.0 where you have the ability to choose the spi channel. see example: https://github.com/firsttris/mfrc522-rpi/blob/master/test/read.js#L4

was not able to test it since im on leave currently.

best regards tristan

[liko28s]

In fact, it was the first change I made in the index, however I did not detect the device, I added a capture note that MFRC522-PYTHON Works fine

[firsttris]

just to be sure... have you activated SPI in Raspbian properly ? https://www.raspberrypi.org/documentation/hardware/raspberrypi/spi/README.md

[liko28s]

yes, in /boot/config.txt

dtparam=spi=on
dtoverlay=spi1-1cs
dtoverlay=pi3-disable-bt

bt is disable for security

[firsttris]

shouldn't dmesg detect the module appart from which implementation you are using?

i will do some tests when im back home.

how do i psyically connect my module to use SPI 1 ?

regards Tristan

[firsttris]

using soft-pi now instead of wiring-pi, please check and re-open if error still persists