how to manage USB with a bare-metal application ?

[zebulon]

Hi,

I want to make a bare-metal application (without Linux OS) on a STM32MP157C-DK2 Board.

I need to use the usb host controller from this board (that why I choose it: multiples USB socket) but in the projects created with CubeIde, I can only assign USBH_HS1 or USB_OTG_HS with the A7 runtime context and my application C code is under the folder project_CM4 wich seem related to only M4 context and not with A7 context

So, my question is simple: could we use a USB mass storage device with a bare-metal application on STM32MP157C-DK2 Board  without a Linux distrib?

I am wondering because I can’t find either a HAL USB module as expected in the “stm32mp1xx_hal�?  list as if the only appropriate way to manage usb was with an OS attached to cortec A7

Thanks in advance for any help

[DGree.2]

Yes, of course you may use my work.

I had to uncomment the `if` block above, because the MSC driver from the ST USB library does not align the TX buffers to cache rows.

[Genadi Zawidowski]

In my edition of ST device classes added alignment for needed structures:

see USBALIGN_BEGIN / USBALIGN_END usage in existing classes.