Voltage and sleep fix for NRF52

Dont let the NRF52 go to SDS Super Deep Sleep
Show bat percentage on NRF52 when above 4210 mV

src/Power.cpp

@@ -82,10 +82,13 @@ class AnalogBatteryLevel : public HasBatteryLevel
         if (v < noBatVolt)
             return -1; // If voltage is super low assume no battery installed
 
+#ifndef NRF52_SERIES
+        // This does not work on a RAK4631 with battery connected
         if (v > chargingVolt)
             return 0; // While charging we can't report % full on the battery
+#endif
 
-        return 100 * (v - emptyVolt) / (fullVolt - emptyVolt);
+        return clamp((int)(100 * (v - emptyVolt) / (fullVolt - emptyVolt)), 0, 100);
     }
 
     /**

src/PowerFSM.cpp

@@ -299,6 +299,8 @@ void PowerFSM_setup()
     // On most boards we use light-sleep to be our main state, but on NRF52 we just stay in DARK
     State *lowPowerState = &stateLS;
 
+    auto meshSds = 0;
+
 #ifndef NRF52_SERIES
     // We never enter light-sleep or NB states on NRF52 (because the CPU uses so little power normally)
 
@@ -307,11 +309,12 @@ void PowerFSM_setup()
 
     powerFSM.add_timed_transition(&stateNB, &stateLS, getPref_min_wake_secs() * 1000, NULL, "Min wake timeout");
     powerFSM.add_timed_transition(&stateDARK, &stateLS, getPref_wait_bluetooth_secs() * 1000, NULL, "Bluetooth timeout");
+    meshSds = getPref_mesh_sds_timeout_secs();
 #else
     lowPowerState = &stateDARK;
+    meshSds = UINT32_MAX; //Workaround for now: Don't go into deep sleep on the RAK4631
 #endif
 
-    auto meshSds = getPref_mesh_sds_timeout_secs();
     if (meshSds != UINT32_MAX)
         powerFSM.add_timed_transition(lowPowerState, &stateSDS, meshSds * 1000, NULL, "mesh timeout");
     // removing for now, because some users don't even have phones