Crash in sd_clock_hfclk_is_running on Soft Device S140, 7.3.0

[jthlim]

Hi, I recently noticed crashing in sd_clock_hfclk_is_running() on a nrf52840 using SoftDevice S140 7.3.0. This is the callstack:

??@0x00000ac4 (Unknown Source:0)

<signal handler called>@0xffffffe9 (Unknown Source:0)

sd_clock_hfclk_is_running@0x000276ae (.../nRF5_SDK_17.1.0_ddde560/components/softdevice/s140/headers/nrf_soc.h:720)

I'm using the following to enable the hfclk whenever I enable QSPI to avoid errata 244:

sd_clock_hfclk_request();

uint32_t isHfclkRunning = 0;

do {

  APP_ERROR_CHECK(sd_clock_hfclk_is_running(&isHfclkRunning));

} while (!isHfclkRunning);

I can trigger this somewhat reliably if I unplug and plug usb power while this code triggers.

Any tips on how I can avoid this issue?

Thanks,

Jeff

[Niziak]

Looks like generic case where USB handlers works from USB IRQ (APP_USBD_CONFIG_EVENT_QUEUE_ENABLE is 0) and USB IRQ is higher (<4) than SoftDevice's SVC IRQ (==4).

[jthlim]

Interesting theory, but my APP_USBD_CONFIG_EVENT_QUEUE_ENABLE is not explicitly defined, but set to 1 in config/nrf52840/config/sdk_config.h and NRFX_USBD_CONFIG_IRQ_PRIORITY is set to 6

The full set of defines I make explicitly regarding USB are:

#define APP_USBD_ENABLED 1

#define APP_USBD_CONFIG_SELF_POWERED 0

#define APP_USBD_CONFIG_SOF_HANDLING_MODE APP_USBD_SOF_HANDLING_INTERRUPT

#define APP_USBD_CONFIG_POWER_EVENTS_PROCESS 0

#define APP_USBD_HID_ENABLED 1

#define APP_USBD_HID_GENERIC_ENABLED 1

#define APP_USBD_STRING_SERIAL globalSerialNumber

#define APP_USBD_STRING_SERIAL_EXTERN 1

#define APP_USBD_STRINGS_MANUFACTURER APP_USBD_STRINGS_MANUFACTURER

#define APP_USBD_STRINGS_MANUFACTURER_EXTERN 1

#define APP_USBD_STRINGS_PRODUCT APP_USBD_STRINGS_PRODUCT

#define APP_USBD_STRINGS_PRODUCT_EXTERN 1

#define NRFX_USBD_ENABLED 1

#define APP_USBD_CDC_ACM_ENABLED 1

 

The rest are from config/nrf52840/config/sdk_config.h