batt display, low batt shutdown, timeout shutdown

src/power.cpp

@@ -0,0 +1,75 @@
+#include "power.h"
+#include "board.h"
+#include "rtc.h"
+#include "low_Power.h"
+#include "led.h"
+
+#ifdef VBATTPIN
+#include "Battery.h"
+  Battery battery(2500, 4160, VBATTPIN);
+#endif
+
+void initBattery(void)
+{
+#ifdef VBATTPIN
+  battery.begin(3300, (R12+R13)/R13); //R1 = 220K, R2 = 100K, factor = (R1+R2)/R2
+#endif
+}
+
+uint16_t batteryGetVoltage( void )
+{
+  return battery.voltage();
+}
+
+void batterydisplay(void)
+{
+#ifdef VBATTPIN
+  uint16_t currentlevel = battery.level();
+  uint16_t currentvoltage = batteryGetVoltage();
+  
+  if(currentvoltage)
+  {
+    if (currentlevel > 90)
+    {
+      turnOnLed(3);
+    }
+    if (currentlevel > 50)
+    {
+      turnOnLed(2);
+    }
+    if (currentlevel > 20)
+    {
+      turnOnLed(1);
+    }
+  }
+#endif
+}
+
+void batteryCheck(void)
+{
+#ifdef VBATTPIN
+  if (battery.level() < 10)
+  {
+    for( int i = 0; i < 10;i++)
+    {
+      turnOnLed(1);
+      delay(300);
+      turnOffLed(1);
+      delay(300);
+    }
+    delay(5000);
+    shutdown();
+  }
+#endif
+}
+
+//low power
+void initLowPower(void)
+{
+  LowPower_init();
+}
+
+void shutdown(void)
+{
+  LowPower_shutdown();
+}