Low battery popup

app/app.c

@@ -1906,8 +1906,18 @@ static void ProcessKey(KEY_Code_t Key, bool bKeyPressed, bool bKeyHeld)
 		}
 	}
 
-	if (gEeprom.KEY_LOCK && gCurrentFunction != FUNCTION_TRANSMIT && Key != KEY_PTT)
-	{	// keyboard is locked
+	bool lowBatPopup = gLowBattery && !gLowBatteryConfirmed &&  gScreenToDisplay == DISPLAY_MAIN;
+
+	if ((gEeprom.KEY_LOCK || lowBatPopup) && gCurrentFunction != FUNCTION_TRANSMIT && Key != KEY_PTT)
+	{	// keyboard is locked or low battery popup
+
+		// close low battery popup
+		if(Key == KEY_EXIT && bKeyPressed && lowBatPopup) {
+			gLowBatteryConfirmed = true;
+			gUpdateDisplay = true;
+			AUDIO_PlayBeep(BEEP_1KHZ_60MS_OPTIONAL);
+			return;
+		}		
 
 		if (Key == KEY_F)
 		{	// function/key-lock key

helper/battery.c

@@ -32,10 +32,19 @@ uint16_t          gBatteryVoltageAverage;
 uint8_t           gBatteryDisplayLevel;
 bool              gChargingWithTypeC;
 bool              gLowBatteryBlink;
+bool              gLowBattery;
+bool              gLowBatteryConfirmed;
 uint16_t          gBatteryCheckCounter;
 
-bool              lowBattery;
+typedef enum {
+	BATTERY_LOW_INACTIVE,
+	BATTERY_LOW_ACTIVE,
+	BATTERY_LOW_CONFIRMED
+} BatteryLow_t;
+
+
 uint16_t          lowBatteryCountdown;
+const uint16_t 	  lowBatteryPeriod = 30;
 
 volatile uint16_t gPowerSave_10ms;
 
@@ -46,7 +55,7 @@ unsigned int BATTERY_VoltsToPercent(const unsigned int voltage_10mV)
 		{814, 100},
 		{756, 24 },
 		{729, 7 },
-		{620, 0 },
+		{630, 0 },
 		{0,   0}
 	};
 
@@ -55,7 +64,7 @@ unsigned int BATTERY_VoltsToPercent(const unsigned int voltage_10mV)
 		{740, 60},
 		{707, 21},
 		{680, 5},
-		{620, 0},
+		{630, 0},
 		{0,   0}
 	};
 	
@@ -94,7 +103,7 @@ void BATTERY_GetReadings(const bool bDisplayBatteryLevel)
 
 	if(gBatteryVoltageAverage > 840)
 		gBatteryDisplayLevel = 6; // battery overvoltage
-	else if(gBatteryVoltageAverage < 620)
+	else if(gBatteryVoltageAverage < 630)
 		gBatteryDisplayLevel = 0; // battery critical
 	else {
 		gBatteryDisplayLevel = 1;
@@ -136,25 +145,30 @@ void BATTERY_GetReadings(const bool bDisplayBatteryLevel)
 
 	if (PreviousBatteryLevel != gBatteryDisplayLevel)
 	{
-		if (gBatteryDisplayLevel < 2)
+		if(gBatteryDisplayLevel > 2)
+			gLowBatteryConfirmed = false;
+		else if (gBatteryDisplayLevel < 2)
 		{
-			lowBattery = true;
+			gLowBattery = true;
 		}
 		else
 		{
-			lowBattery = false;
+			gLowBattery = false;
 
 			if (bDisplayBatteryLevel)
 				UI_DisplayBattery(gBatteryDisplayLevel, gLowBatteryBlink);
 		}
 		
+		if(!gLowBatteryConfirmed)
+			gUpdateDisplay = true;
+
 		lowBatteryCountdown = 0;
 	}
 }
 
 void BATTERY_TimeSlice500ms(void) 
 {
-	if (lowBattery)
+	if (gLowBattery)
 	{
 		gLowBatteryBlink = ++lowBatteryCountdown & 1;
 
@@ -163,9 +177,9 @@ void BATTERY_TimeSlice500ms(void)
 		if (gCurrentFunction != FUNCTION_TRANSMIT)
 		{	// not transmitting
 
-			if (lowBatteryCountdown < 30)
+			if (lowBatteryCountdown < lowBatteryPeriod)
 			{
-				if (lowBatteryCountdown == 29 && !gChargingWithTypeC)
+				if (lowBatteryCountdown == lowBatteryPeriod-1 && !gChargingWithTypeC && !gLowBatteryConfirmed)
 					AUDIO_PlayBeep(BEEP_500HZ_60MS_DOUBLE_BEEP);
 			}
 			else
@@ -174,18 +188,17 @@ void BATTERY_TimeSlice500ms(void)
 
 				if (!gChargingWithTypeC)
 				{	// not on charge
-
+					if(!gLowBatteryConfirmed) {
 						AUDIO_PlayBeep(BEEP_500HZ_60MS_DOUBLE_BEEP);
-
-					#ifdef ENABLE_VOICE
+#ifdef ENABLE_VOICE
 						AUDIO_SetVoiceID(0, VOICE_ID_LOW_VOLTAGE);
-					#endif
-
+#endif
+					}
 					if (gBatteryDisplayLevel == 0)
 					{
-						#ifdef ENABLE_VOICE
+#ifdef ENABLE_VOICE
 						AUDIO_PlaySingleVoice(true);
-						#endif
+#endif
 
 						gReducedService = true;
 
@@ -197,10 +210,10 @@ void BATTERY_TimeSlice500ms(void)
 						if (gEeprom.BACKLIGHT_TIME < (ARRAY_SIZE(gSubMenu_BACKLIGHT) - 1))
 							BACKLIGHT_TurnOff();  // turn the backlight off
 					}
-					#ifdef ENABLE_VOICE
+#ifdef ENABLE_VOICE
 					else
 						AUDIO_PlaySingleVoice(false);
-					#endif
+#endif
 				}
 			}
 		}

helper/battery.h

@@ -28,6 +28,8 @@ extern uint16_t          gBatteryVoltageAverage;
 extern uint8_t           gBatteryDisplayLevel;
 extern bool              gChargingWithTypeC;
 extern bool              gLowBatteryBlink;
+extern bool              gLowBattery;
+extern bool              gLowBatteryConfirmed;
 extern uint16_t          gBatteryCheckCounter;
 
 extern volatile uint16_t gPowerSave_10ms;

ui/main.c

@@ -234,6 +234,12 @@ void UI_DisplayMain(void)
 	// clear the screen
 	memset(gFrameBuffer, 0, sizeof(gFrameBuffer));
 
+	if(gLowBattery && !gLowBatteryConfirmed) {
+		UI_DisplayPopup("LOW BATTERY");
+		ST7565_BlitFullScreen();
+		return;
+	}
+
 	if (gEeprom.KEY_LOCK && gKeypadLocked > 0)
 	{	// tell user how to unlock the keyboard
 		UI_PrintString("Long press #", 0, LCD_WIDTH, 1, 8);