fix CRYPTOCELL_IRQn prevent go to sleep causing high power

Author: hathach

cores/nRF5/freertos/portable/CMSIS/nrf52/port_cmsis_systick.c

@@ -189,6 +189,12 @@ void vPortSuppressTicksAndSleep( TickType_t xExpectedIdleTime )
             (void) __get_FPSCR();
             NVIC_ClearPendingIRQ(FPU_IRQn);
 #endif
+
+#ifdef NRF_CRYPTOCELL
+            // manually clear CryptoCell else it could prevent low power mode
+            NVIC_ClearPendingIRQ(CRYPTOCELL_IRQn);
+#endif
+
 #ifdef SOFTDEVICE_PRESENT // TODO
             uint8_t sd_en = 0;
             (void) sd_softdevice_is_enabled(&sd_en);

cores/nRF5/wiring.c

@@ -96,6 +96,11 @@ void waitForEvent(void)
   uint8_t sd_en = 0;
   (void) sd_softdevice_is_enabled(&sd_en);
 
+#ifdef NRF_CRYPTOCELL
+  // manually clear CryptoCell else it could prevent low power mode
+  NVIC_ClearPendingIRQ(CRYPTOCELL_IRQn);
+#endif
+
   if ( sd_en )
   {
     (void) sd_app_evt_wait();

libraries/Adafruit_nRFCrypto

@@ -179,7 +179,7 @@ class AdafruitBluefruit
      *------------------------------------------------------------------*/
     void setMultiprotocolSemaphore(SemaphoreHandle_t mprot_event_semaphore) 
     { 
-        _mprot_event_sem= mprot_event_semaphore;
+      _mprot_event_sem= mprot_event_semaphore;
     } 
 #endif