Can nrf52840 usbd work with softdevice?

[nrfmote]

The nrf52840 usbd examples of peripheral in SDK 13.0.0 worked fine. I want usb work with BLE softdevice and there are lots of conflicts between nrf drv and softdevice. Is there any example of usbd working together with ble softdevice?

[Don Schoppe]

Hi Sigurd, is there an ETA for when the updated version supporting USB power events/interrupts will be released? Thanks!

[Sigurd]

Hi Don,

A new S140 SoftDevice version with support for USB power events/interrupts will be released in the near future. I will add a comment here when it’s released. If you need a more accurate release date, you should ask the Nordic Regional Sales Manager in your area. If you do not have any contact information, then you can send me a private message with your location and I will provide you with the contact information of your local Nordic RSM.

[Sigurd]

Hi all,

The new S140 SoftDevice with support for USB power events/interrupts is now released. The version is 6.0.0-6.alpha, and can be downloaded from here:

www.nordicsemi.com/.../60624

From the release notes:

The SoftDevice API now provides access to USB power handling registers

Another interesting feature is the improvement on the BLE 5 Long-Range:

The SoftDevice now implements a range delay (packet time of flight compensation) corresponding to a distance of 5 km when using LE Coded PHY

[Don Schoppe]

Sigurd, thanks very much for the quick reply. Don't we also need an updated version of the SDK too? Otherwise the app still can't register a USB power event handler. nrf_drv_power_usbevt_init() doesn't allow it.

From nrf_drv_power.c:

ret_code_t nrf_drv_power_usbevt_init(nrf_drv_power_usbevt_config_t const * p_config)
{
    nrf_drv_power_usbevt_uninit();
    if (p_config->handler != NULL)
    {
        m_usbevt_handler = p_config->handler;
#ifdef SOFTDEVICE_PRESENT
        if (nrf_sdh_is_enabled())
        {
            /** @todo Implement USB power events when SD support it */
            return NRF_ERROR_INVALID_STATE;
        }
        else
#endif
        {
            nrf_power_int_enable(
                NRF_POWER_INT_USBDETECTED_MASK |
                NRF_POWER_INT_USBREMOVED_MASK  |
                NRF_POWER_INT_USBPWRRDY_MASK);
        }
    }
    return NRF_SUCCESS;
}

Example application's power event handler and registration of the hander:

static void power_usb_event_handler(nrf_drv_power_usb_evt_t event)
{
    switch(event)
    {
        case NRF_DRV_POWER_USB_EVT_DETECTED:

            if (!nrf_drv_usbd_is_enabled())
            {
                app_usbd_enable();
            }
            break;
        case NRF_DRV_POWER_USB_EVT_REMOVED:
            m_usb_connected = false;
            break;
        case NRF_DRV_POWER_USB_EVT_READY:
            m_usb_connected = true;
            break;
        default:
            ASSERT(false);
    }
}

        static const nrf_drv_power_usbevt_config_t config =
        {
            .handler = power_usb_event_handler
        };
        ret_code_t ret;

        ret = nrf_drv_power_usbevt_init(&config);
        APP_ERROR_CHECK(ret);

Thanks! Don

[Sigurd]

Hi Don,

It's easiest to wait for a new SDK with support for S140 6.0.0-6.alpha, but it should be possible to do the migration to the new S140 and implement the new S140 USB Power functions, such as sd_power_usbpwrrdy_enable() and sd_power_usbdetected_enable() yourself. But if this is not critical for you at the current time, then it could be better to wait for the supported SDK.