added Suspend and Resume event for nrf5x port

also rename DCD_EVENT_SUSPENDED to DCD_EVENT_SUSPEND

src/portable/nordic/nrf5x/dcd_nrf5x.c

@@ -207,6 +207,13 @@ void dcd_set_config (uint8_t rhport, uint8_t config_num)
   (void) rhport;
   (void) config_num;
   // Nothing to do
+
+  // Clear current pending 
+  NRF_USBD->EVENTCAUSE |= NRF_USBD->EVENTCAUSE;
+  NRF_USBD->EVENTS_USBEVENT = 0;
+
+  // Enable usb event for suspend and resume
+  NRF_USBD->INTENSET = USBD_INTEN_USBEVENT_Msk;
 }
 
 //--------------------------------------------------------------------+
@@ -358,13 +365,34 @@ void USBD_IRQHandler(void)
     }
   }
 
-  /*------------- Interrupt Processing -------------*/
   if ( int_status & USBD_INTEN_USBRESET_Msk )
   {
     bus_reset();
     dcd_event_bus_signal(0, DCD_EVENT_BUS_RESET, true);
   }
 
+  if ( int_status & USBD_INTEN_SOF_Msk )
+  {
+    dcd_event_bus_signal(0, DCD_EVENT_SOF, true);
+  }
+
+  if ( int_status & USBD_INTEN_USBEVENT_Msk )
+  {
+    uint32_t const evt_cause = NRF_USBD->EVENTCAUSE;
+
+    if ( evt_cause & USBD_EVENTCAUSE_SUSPEND_Msk ) 
+    {
+      dcd_event_bus_signal(0, DCD_EVENT_SUSPEND, true);
+    }
+    
+    if ( evt_cause & USBD_EVENTCAUSE_RESUME_Msk  ) 
+    {
+      dcd_event_bus_signal(0, DCD_EVENT_RESUME , true);
+    }
+
+    NRF_USBD->EVENTCAUSE = evt_cause; // clear interrupt
+  }
+
   if ( int_status & EDPT_END_ALL_MASK )
   {
     // DMA complete move data from SRAM -> Endpoint
@@ -502,12 +530,6 @@ void USBD_IRQHandler(void)
       }
     }
   }
-
-  // SOF interrupt
-  if ( int_status & USBD_INTEN_SOF_Msk )
-  {
-    dcd_event_bus_signal(0, DCD_EVENT_SOF, true);
-  }
 }
 
 #endif

src/portable/nordic/nrf5x/hal_nrf5x.c

@@ -212,8 +212,8 @@ void tusb_hal_nrf_power_event (uint32_t event)
 
       nrf_usbd_isosplit_set(USBD_ISOSPLIT_SPLIT_HalfIN);
 
-      // Enable interrupt. SOF is used as CDC auto flush
-      NRF_USBD->INTENSET = USBD_INTEN_USBRESET_Msk | USBD_INTEN_USBEVENT_Msk | USBD_INTEN_EPDATA_Msk |
+      // Enable interrupt
+      NRF_USBD->INTENSET = USBD_INTEN_USBRESET_Msk | USBD_INTEN_EPDATA_Msk |
           USBD_INTEN_EP0SETUP_Msk | USBD_INTEN_EP0DATADONE_Msk | USBD_INTEN_ENDEPIN0_Msk | USBD_INTEN_ENDEPOUT0_Msk;
 
       // Enable interrupt, priorities should be set by application