begin deep sleep support for nrf52

src/mesh/RadioInterface.cpp

@@ -125,6 +125,12 @@ bool RadioInterface::init()
     return true;
 }
 
+int RadioInterface::notifyDeepSleepCb(void *unused)
+{
+    sleep();
+    return 0;
+}
+
 /** hash a string into an integer
  *
  * djb2 by Dan Bernstein.

src/mesh/RadioInterface.h

@@ -48,7 +48,7 @@ class RadioInterface
         CallbackObserver<RadioInterface, void *>(this, &RadioInterface::preflightSleepCb);
 
     CallbackObserver<RadioInterface, void *> notifyDeepSleepObserver =
-        CallbackObserver<RadioInterface, void *>(this, &RadioInterface::notifyDeepSleepDb);
+        CallbackObserver<RadioInterface, void *>(this, &RadioInterface::notifyDeepSleepCb);
 
   protected:
     MeshPacket *sendingPacket = NULL; // The packet we are currently sending
@@ -136,11 +136,7 @@ class RadioInterface
     /// Return 0 if sleep is okay
     int preflightSleepCb(void *unused = NULL) { return canSleep() ? 0 : 1; }
 
-    int notifyDeepSleepDb(void *unused = NULL)
-    {
-        sleep();
-        return 0;
-    }
+    int notifyDeepSleepCb(void *unused = NULL);
 
     int reloadConfig(void *unused)
     {

src/mesh/SX1262Interface.cpp

@@ -201,9 +201,20 @@ bool SX1262Interface::isActivelyReceiving()
 
 bool SX1262Interface::sleep()
 {
+    DEBUG_MSG("sx1262 entering sleep mode\n");
+    setStandby(); // Stop any pending operations
+
+    // turn off TCXO if it was powered
+    // FIXME - this isn't correct
+    // lora.setTCXO(0);
+
     // put chipset into sleep mode
     disableInterrupt();
-    lora.sleep();
+    lora.sleep(false); // Note: we do not keep the config, full reinit will be needed
+
+#ifdef SX1262_POWER_EN
+    digitalWrite(SX1262_POWER_EN, LOW);
+#endif
 
     return true;
 }