High motor current on BTT SKR Pico 1.0, No communication with Trinamic drivers

[richardklingler]

Good day (o;

Got me some BTT SKR Pico boards for testing several CNC setups.

Compiled in VSCode (git pull from today) on macOS as the web builder doesn't work on macOS Safari and some settings can't be changed there (works in Firefox).

When moving a motor the current for an axis goes up high (> 2A).

M122 reports then:

[MSG:Warning: Could not communicate with stepper driver!]

After resetting the board, M122 reports the TMC2209 setting and motor current goes back to normal.

Anyone else seen this behavior?

[terjeio]

Could be too short delay before initializing the drivers after power up? If motor power is not up then communication with the drivers fails. If the controller is powered from a computer then this should be powered up after the motor power is switched on.