ESP32 silent failure if initialising >2 motors

[rqi14]

Hi. I found for ESP32 if I initialise more than 2 motors, it would freeze the board in the process of GPIO initialisation. It is completely fine with 1 or 2 motors.

I (765) gpio: GPIO[26]| InputEn: 1| OutputEn: 1| OpenDrain: 0| Pullup: 0| Pulldown: 0| Intr:0 
I (766) gpio: GPIO[16]| InputEn: 1| OutputEn: 1| OpenDrain: 0| Pullup: 0| Pulldown: 0| Intr:0 
I (773) gpio: GPIO[12]| InputEn: 1| OutputEn: 1| OpenDrain: 0| Pullup: 0| Pulldown: 0| Intr:0 
I (783) gpio: GPIO[25]| InputEn: 1| OutputEn: 1| OpenDrain: 0| Pullup: 0| Pulldown: 0| Intr:0 
I (792) gpio: GPIO[27]| InputEn: 1| OutputEn: 1| OpenDrain: 0| Pullup: 0| Pulldown: 0| Intr:0 
I (801) gpio: GPIO[12]| InputEn: 1| OutputEn: 1| OpenDrain: 0| Pullup: 0| Pulldown: 0| Intr:0 
I (811) gpio: GPIO[17]| InputEn: 1| OutputEn: 1| OpenDrain: 0| Pullup: 0| Pul�

[gin66]

Sorry to hear that.

What comes to mind:

• If the third stepper is initialized first, will it fail with the first ?
• If the third stepper initialization is skipped and replaced by a delay for e.g. 1s, will if work ?
• Which version of espidf are you using ?
• esp32 or any derivate ?
• If espidf4: rmt or mcpwm/pcnt driver ?

There is a related issue #246, that in case of failure, FastAccelStepper still yield a stepper instance.