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nRF52840 SDK14.x nrf usb driver problem

Hi Engineers!

We used SDK13 for our Project (multilink BLE with 1xServer & 4x PeerS) and now move to SDK14.2, almost done except only USBD.

  1. if we use SDK13 driver , our PC aplication (HID EP1) works very stable (we use USB for BOOTLOADER , for Options Settings and for some hi-level Diagnostic use own GUI app.)

  2. if we use SDK14 driver , after 100ms...4 sec USB transaction fail (until RESET).

please, solve SDK14 problem in nrf_drv_usbd.c driver, because cannot advance ahead due USB problem.

thx All!

  • Hi,

    • Are you using custom boards, or nRF52840-PDKs? If you are using nRF52840-PDKs, what version of the board are you using ? (It should be printed below PCA10056 on the sticker on the kit.)

    • Are you seeing this issue on all boards ? or just some boards?

    • What do you mean USB transaction fail ? Are you running into the error-handler ? have you checked the return codes while running in debug mode?

    Also please take a look at the SDK 14 Migration guide here.

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