Yaroslav Vlasov

Hmm(( It's look like the same issue: http://www.chibios.com/forum/viewtopic.php?t=1727 Unfortunately Mybe this is the (hardware) decision: https://stackoverflow.com/questions/54939948/stm32-usb-cdc-after-hardware-reset

 

I'll try it later. (Remove R10 resistor, use bluepill board with external pull-up resistor with toggling mosfet transistor driven by PC14 or 15 for example)

I suppose it can be fixed only by hardware.

I think we can move it to stm32cube ide. Also project contains .hex file with default 4 axis.

This is complex and unpredictable way to use it))

> I don't have the knowledge of grbl's core to pull it off Me too )))

Any results? ))

Ok. We can use dma for this purpose.

Maybe. We have to think.