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nrf5x: Fix race condition during startup #1221

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merged 1 commit into from Dec 8, 2021
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nrf5x: Fix race condition during startup #1221

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8 changes: 7 additions & 1 deletion src/portable/nordic/nrf5x/dcd_nrf5x.c
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Expand Up @@ -1059,7 +1059,13 @@ void tusb_hal_nrf_power_event (uint32_t event)

// Enable interrupt, priorities should be set by application
NVIC_ClearPendingIRQ(USBD_IRQn);
NVIC_EnableIRQ(USBD_IRQn);
// Don't enable USBD interrupt yet, if dcd_init() did not finish yet
// Interrupt will be enabled by tud_init(), when USB stack is ready
// to handle interrupts.
if (tud_inited())
{
NVIC_EnableIRQ(USBD_IRQn);
}

// Wait for HFCLK
while ( !hfclk_running() ) { }
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