Enable Full-Speed 12 Mbps USB Communication on TMCM-6214 via PyTrinamic

[mangeshs1359-netizen]

We are currently using the TMCM-6214 motion control module with the PyTrinamic Python library available at:

🔗[pytrinamic/connections/usb_tmcl_interface.py]

The module communicates through the serial USB interface, which at present only supports speeds below 1 Mbps.

According to the TMCM-6214 datasheet, the onboard USB interface is capable of full-speed USB (12 Mbps) operation. We would like to use this full USB bandwidth for higher performance data exchange.

Questions for Support:

1. Does the PyTrinamic library currently support native full-speed USB communication with TMCM-6214?
2. If not, is there an alternate API or firmware configuration to enable 12 Mbps USB operation?
3. Are there example implementations or connection classes available for direct USB (not serial-virtual) communication?
4. Can the ConnectionManager or UsbTmclInterface be modified to support native USB mode, and if so, what parameters need adjustment?

[trinamic-bp]

Hi @mangeshs1359-netizen,

The data throughput of the TMCM-6214 is significantly lower than 12 Mbps. The 12 Mbps figure refers only to the USB clock speed and not the actual data transfer rate. TMCL message response times also affect overall performance.

As far as I know, there is no way to improve this. The TMCM-6214 always communicates via a virtual COM port, and unfortunately, it does not support switching to native USB communication (e.g., bulk transfer).

My only recommendation would be to use the CAN interface instead, as it generally offers better data throughput.