added low battery message

2 files changed, 7 insertions, 0 deletions

diff --git a/src/components/battery/BatteryController.cpp b/src/components/battery/BatteryController.cpp
index dc15612e..95a30792 100644
--- a/src/components/battery/BatteryController.cpp
+++ b/src/components/battery/BatteryController.cpp
@@ -88,10 +88,16 @@ void Battery::SaadcEventHandler(nrfx_saadc_evt_t const* p_event) {
 
     if ((isPowerPresent && newPercent > percentRemaining) || (!isPowerPresent && newPercent < percentRemaining) || firstMeasurement) {
       firstMeasurement = false;
+      lastPercentRemaining = percentRemaining;
       percentRemaining = newPercent;
       systemTask->PushMessage(System::Messages::BatteryPercentageUpdated);
     }
 
+    constexpr uint8_t lowBatteryThreshold {50};
+    if (!isPowerPresent && lastPercentRemaining >= lowBatteryThreshold && percentRemaining < lowBatteryThreshold) {
+      systemTask->PushMessage(System::Messages::LowBattery);
+    }
+
     nrfx_saadc_uninit();
     isReading = false;
   }
diff --git a/src/components/battery/BatteryController.h b/src/components/battery/BatteryController.h
index 5a7394c4..53eb7d19 100644
--- a/src/components/battery/BatteryController.h
+++ b/src/components/battery/BatteryController.h
@@ -39,6 +39,7 @@ namespace Pinetime {
       static constexpr nrf_saadc_input_t batteryVoltageAdcInput = NRF_SAADC_INPUT_AIN7;
       uint16_t voltage = 0;
       uint8_t percentRemaining = 0;
+      uint8_t lastPercentRemaining = 0;
 
       bool isFull = false;
       bool isCharging = false;