SPI access using extender

[Armin@netPI]

Hi there.

I do not see an attachment in your last post.

When I speak about the "NPIX module technique" I mean modules that fit in breakout at the bottom of a netPI device where module such das the CAN module https://www.hilscher.com/products/produc...edge/3004/ can be shifted in.

The description of those modules you find at https://www.netiot.com/netpi/industrial-raspberry-pi-3/ in the download section.

So do we speak about the same interface?

With the /dev/ttyS0 I disagree on a standard raspberry pi. All interfaces on a standard Pi can only be activated using the "raspi-config" tool. By default neither I2C, nor SPI, nor UART nor SSH is actviated. If you see /dev/ttyS0 active then you must have activated it with the raspi-config before.

Look here are the devices on my Raspberry Pi 3B:

Code:

autofs           gpiochip1  loop7               ppp    ram6     tty1   tty23  tty37  tty50  tty7       vcs3      vcsu3
block            gpiochip2  loop-control        ptmx   ram7     tty10  tty24  tty38  tty51  tty8       vcs4      vcsu4
btrfs-control    gpiomem    mapper              pts    ram8     tty11  tty25  tty39  tty52  tty9       vcs5      vcsu5
bus              hwrng      media0              ram0   ram9     tty12  tty26  tty4   tty53  ttyAMA0    vcs6      vcsu6
cachefiles       initctl    mem                 ram1   random   tty13  tty27  tty40  tty54  ttyprintk  vcsa      vga_arbiter
char             input      memory_bandwidth    ram10  raw      tty14  tty28  tty41  tty55  uhid       vcsa1     vhci
console          kmsg       mmcblk0             ram11  rfkill   tty15  tty29  tty42  tty56  uinput     vcsa2     video10
cpu_dma_latency  log        mmcblk0p1           ram12  serial1  tty16  tty3   tty43  tty57  urandom    vcsa3     video11
cuse             loop0      mmcblk0p2           ram13  shm      tty17  tty30  tty44  tty58  v4l        vcsa4     video12
disk             loop1      mqueue              ram14  snd      tty18  tty31  tty45  tty59  vchiq      vcsa5     watchdog
fb0              loop2      net                 ram15  stderr   tty19  tty32  tty46  tty6   vcio       vcsa6     watchdog0
fd               loop3      network_latency     ram2   stdin    tty2   tty33  tty47  tty60  vc-mem     vcsm-cma  zero
full             loop4      network_throughput  ram3   stdout   tty20  tty34  tty48  tty61  vcs        vcsu
fuse             loop5      null                ram4   tty      tty21  tty35  tty49  tty62  vcs1       vcsu1
gpiochip0        loop6      port                ram5   tty0     tty22  tty36  tty5   tty63  vcs2       vcsu2

there isn't any /dev/ttyS0 active.