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SW4STM32 and SW4Linux fully supports the STM32MP1 asymmetric multicore Cortex/A7+M4 MPUs

   With System Workbench for Linux, Embedded Linux on the STM32MP1 family of MPUs from ST was never as simple to build and maintain, even for newcomers in the Linux world. And, if you install System Workbench for Linux in System Workbench for STM32 you can seamlessly develop and debug asymmetric applications running partly on Linux, partly on the Cortex-M4.
You can get more information from the ac6-tools website and download (registration required) various documents highlighting:

System Workbench for STM32


how to convert stm32f103 usb mouse example to keyboard?

I have stm32 performance stick (stm32f103rbt6 micro-controller) with stm32-IO-board. I want to create a usb hid keyboard with it. But the example code given along with it is for USB mouse.

I know I have to change the HID report descriptors and other descriptors according to keyboard, and I have to write key scan program. Is it enough or do I have make any other changes.

Here is the usb mouse example.usb mouse exampleQuestion

change the usb “HID” descriptor from mouse to keyboard
you may have also to review the usb confg (more than 4 byte per packet)

i did that for Mousse to gaempad and it wasvery easy
But for kayboard it may not be so straigt forward or simple