i want to use usb to send and receive data to cm4 core and save it in a buffer and the buffer will be accessed by the cm7 and given and taken to touch gfx screen. so please share on how to send data from pc terminal to a buffer and readback also

[SGK]

please help

[Yoann KLEIN]

Hello @SGK​ ,

One way to send data from the PC to the board could be using the Serial Port.

You can take a look at this post I answered some months ago, that shows how to send data from the computer keyboard to the board through USART, and displaying the value on screen.

Hope this helps starting your project,

/Yoann

[Piranha]

https://github.com/MaJerle/stm32h7-dual-core-inter-cpu-async-communication