Error: SPI error: Inappropriate ioctl for device (errno 25)

[Maksims]

Running this code:

var SPI = require('pi-spi');

var spi = new SPI.initialize('/dev/spidev1.1');

var data = new Uint8Array([
    255, 0, 0,
    255, 255, 255
]);

spi.write(new Buffer(data), function(err, d) {
    console.log(err, d);
});

Gives error and exits application.

Although running test from end of this page verifies that SPI interface works as supposed to.

[natevw]

Can you post the error traceback? Does the user you are running the code with have permission to access the SPI device? (You can try temporarily with sudo to see if that fixes it, and either keep doing that as a permanent solution, or change the permissions to something suitable for your situation.)

[Maksims]

Was running it with sudo in first place. Without it gave clear error message that it had no access to serial.

[natevw]

Ok. I wonder, do you mean to have "1.1" for the SPI device path? Usually only "0.0" and "0.1" are available.

[Maksims]

It was a bit weird to have one, and it looked like it was latest SPI drivers from another vendor, created such device. And it actually worked.

I've reinstalled older OS and older drivers, and got only 0.0 and 0.1 now, and it works with them now. So I guess if those new drivers is what going to be used in future, then it is good to look onto them, but for now seems like links around the places, only point to older drivers and OS version.

[natevw]

What alternate driver were you using? I haven't followed the RasPi distro situation very closely, so is that something they're beta testing and might release soon?

[natevw]

Not hearing any more followup here, I think this must have been addressed. So I'll close this, but feel free to re-open if it still needs attention.