how many USB end Points Possible on STM32F767?

[APate.8]

I am trying to make composit USB example with MSC and 2 CDC.

Can anyone suggest if its possible with STM32F767VIHx ?

I am using FreeRTOS as well.

I have already started to 5 interface but they seems to be not reliable. I can send messages from one port to another but can not send from freertos task directly.

I can loop back from CDC to Another but CDC_Transmit_FS not working from FreeRTOS task.

I have only one task running and USB interrupt priority is set to 7.

If anyone have the same issue, please let me knew.

[waclawek.jan]

The number of endpoints depends on whether you are using OTG_FS or OTG_HS (regardless of the actual PHY/speed used).

JW

[APate.8]

I have configured the application as MSC+ 2 CDC, so it uses total 5 IN end points and 3 OUT end points.

It populate correctly on windows and MSC works perfect.

However, 2 CDC are not working. They only works if I send messages from one port to another in loopback mode. (Receive Packet will forward the messages to opposite CDC).

I am using freertos and CubeMx to generate project code. If I send using CDC_Transmit_FS() function from freertos it doesnt work.

USB interrupt priority set to 7 while FreeRTOS LIB Priorities from 5 to 15.

Has anyone got the same issue?

  HAL_PCDEx_SetRxFiFo(&hpcd_USB_OTG_FS, 0x40);
  HAL_PCDEx_SetTxFiFo(&hpcd_USB_OTG_FS, 0, 0x40);
  HAL_PCDEx_SetTxFiFo(&hpcd_USB_OTG_FS, 1, 0x40);
  HAL_PCDEx_SetTxFiFo(&hpcd_USB_OTG_FS, 2, 0x20);
  HAL_PCDEx_SetTxFiFo(&hpcd_USB_OTG_FS, 3, 0x20);
  HAL_PCDEx_SetTxFiFo(&hpcd_USB_OTG_FS, 4, 0x10);
  HAL_PCDEx_SetTxFiFo(&hpcd_USB_OTG_FS, 5, 0x10);

FIFO allocation for the application.