UVC version supported by UsbX Azure RTOS running on STM32H735XGT6

[mcBe]

Hello All,

Do you support all UVC versions on UsbX Azure RTOS running on STM32H735XGT6? Or do you have some restrictions?

Best regards,

[mohamed.ayed]

Hi @mcBe USBX stack support UVC class version 1.5 and there is no limitation you ca generate your project with cubemx and x-cube-azrtos-h7 pack. actually our generated descriptor support MJPEG and UNCOMPRESSED format  

You can also refer to this sample application running on STM32H723-nucleo and easily to port to stm32H735

https://github.com/STMicroelectronics/x-cube-azrtos-h7/tree/main/Projects/NUCLEO-H723ZG/Applications/USBX/Ux_Device_Video 

[MKing]

Hi,

is it possible to use/activate 3  isochronous transactions per microframe? 

/* High speed Isochronous Endpoint: MULT setting.*/
#define UVC_ISO_EP_HS_MULT (2 << 3)

 

Edit: Found the Problem. I needed to increase the amount of send bytes to force the processor to send 3 transactions:

USBD_LL_Transmit(pdev, (uint8_t)(epnum | 0x80U), (uint8_t *)TxPtr, AmountOfSendBytes);