Got 3 teensy 3.5 connected to an RPI 3. I cannot get non-root access to AMA* serial devices devices.
ACM devices seem ok - this is if I plug a USB hub in and run Teensy 3.5 from there.
However, I need to connect the Teensys direct to the PI as there is no space in the setup for a hub.
I've tried everything I know, dialout groups, putting AMA* device in the udev file, which does nothing.
Looks like ACM* devices are always root only on PI:
crw-rw-rw- 1 root dialout 166, 0 Oct 30 17:10 /dev/ttyACM0
crw--w---- 1 root tty 204, 64 Oct 30 17:10 /dev/ttyAMA0
changing the permissions doesn't work, because it get overwritten on reboot.
Any idea how to fix this?
I have a big demo tomorrow, and if I can't get it working I'm stuffed.
TIA
ACM devices seem ok - this is if I plug a USB hub in and run Teensy 3.5 from there.
However, I need to connect the Teensys direct to the PI as there is no space in the setup for a hub.
I've tried everything I know, dialout groups, putting AMA* device in the udev file, which does nothing.
Looks like ACM* devices are always root only on PI:
crw-rw-rw- 1 root dialout 166, 0 Oct 30 17:10 /dev/ttyACM0
crw--w---- 1 root tty 204, 64 Oct 30 17:10 /dev/ttyAMA0
changing the permissions doesn't work, because it get overwritten on reboot.
Any idea how to fix this?
I have a big demo tomorrow, and if I can't get it working I'm stuffed.
TIA