USB Host Printer Class

[Nouchi]

Hello,

I'm looking for some USB Host Class Printer application exemple.

Where can I find such project?

Emmanuel

[JuroV]

USB printer class is not supported yet in MQX.

[Nouchi]

Hello,

It was added in MQX 3.5, it's written in release notes :

4.5.1 USB Class Drivers supported by Host Development Kit- Human-interface Class (HID) used to access mouse, keyboard and similar devices.- Mass storage device (MSD) Class used to access USB drives.- USB Hub class used to attach multiple devices to a single host port. If enabled at theapplication level, the HUB support is fully transparent. User application only needs to bemodified to be ready to handle multiple USB devices simultaneously. Keyboard/Mouseexample application is provided.- Basic Printer class.

[JuroV]

Hello,

I am sorry to say that, but printer class is really not supported in MQX, even not in MQX 3.5.

[evgenyerlihman]

Hi JuroV​,

Do you know if MQX4.2 support usb printer?

Thanks,

Evgeny

[soledad]

Hello Evgeny,

The MQX 4.x support the USB host printer class and you can find the driver from: .../usb/host/source/classes/printer.

Unfortunately we don't have any source code example for using that class driver, (we've not tested it) and so we can hardly estimate the effort.

Theoretically, to communicate with the printer should be easy (enumerate, interface, send bulk data) as these functions are prepared in the class driver. The printer language needs to be implemented at the application level. Unfortunately we don't have experience with it that we could share at the moment.

Have a great day,
Sol

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[Nouchi]

Hello,

I'm little bit obstinate and impatient, I guess it's a feature for future release.

But, you can find files named usb_host_printer.c and usb_host_printer.h, holding functions like usb_printer_init, usb_printer_recv_data, usb_printer_send_data and some other.

Interesting, no ?

[nikhil165]

Does MQX 3.8 supports printer class?