does pyserial have an output buffer of 64 bytes

Maybe that justifies the effort it needs. I did this before with another microcontroller and it's just fun not to worry about distributing drivers. Examples of this can be found in the pyserial github repo. In the implementation of this custom url handler, you'd need to handle/buffer the 64 Bytes packets rx/tx from the HID device. You would then open the port with 'serial_for_url' instead of 'serial' (which is good practise anyway).Īs an example, the url can have a form like 'hid://'. Using pyserial, it's quite easy to write a custom url handler (see. HID can be a bit tricky (OS dependant, python support) No visible COM port (in device manager), tool support session (VISASession Unique logical identifier to a session.

Corresponds to viBufRead function of the VISA library. The data can be read from a device or an interface. no INF file necessary (only a problem on windows systems), so no driver mess/maintenace for these platforms bufferread (session: VISASession, count: int) Tuple bytes, source Reads data through the use of a formatted I/O read buffer. It would replace the VCP functionality (there wouldn't be a COM port anymore). I meant routing the HID IN/OUT endpoints as in-/output for the REPL (instead of using the VCP). U2F uses the HID interface but requires bidirectional communication for the cryptographic challenge and response. My use case is that I'm interested in creating a FIDO U2F token from my TiLDA-Mk3. It may also require changing the interface of the pyb.usb_mode() method because it currently assumes there's only one endpoint (what if you have a different maximum packet size or polling interval for IN vs OUT?) My idea was basically to copy the basic receive interface of the pyb.USB_VCP() class, and implement it in much the same was as stmhal/usbd_cdc_interface.c for receiving over the VCP. Is there any kind of plan for this at the moment? I don't want to implement this, issue a PR, and discover it's not the right shape for the project. There is also an issue for this, but it quickly descended into a discussion about screen/picocom instead: There was a bit of discussion about this in the PR that allowed HID customization: I'm interested in adding support for a USB HID OUT endpoint as well as IN.

I'm using micropython on the TiLDA-Mk3 - Ĭurrently, the USB HID interface only has an IN endpoint, so your HID device can only send data to the host, and can't receive data from the host.

Does pyserial have an output buffer of 64 bytes