complete ble ota move

src/esp32/CallbackCharacteristic.h

@@ -0,0 +1,33 @@
+#pragma once
+#include "PowerFSM.h" // FIXME - someday I want to make this OTA thing a separate lb at at that point it can't touch this
+#include "BLECharacteristic.h"
+
+/**
+ * This mixin just lets the power management state machine know the phone is still talking to us
+ */
+class BLEKeepAliveCallbacks : public BLECharacteristicCallbacks
+{
+public:
+    void onRead(BLECharacteristic *c)
+    {
+        powerFSM.trigger(EVENT_CONTACT_FROM_PHONE);
+    }
+
+    void onWrite(BLECharacteristic *c)
+    {
+        powerFSM.trigger(EVENT_CONTACT_FROM_PHONE);
+    }
+};
+
+/**
+ * A characterstic with a set of overridable callbacks
+ */
+class CallbackCharacteristic : public BLECharacteristic, public BLEKeepAliveCallbacks
+{
+public:
+    CallbackCharacteristic(const char *uuid, uint32_t btprops)
+        : BLECharacteristic(uuid, btprops)
+    {
+        setCallbacks(this);
+    }
+};