# HG changeset patch
# User Ideenmodellierer
# Date 1614197002 -3600
# Node ID 66c8a4ff9fc4de53ac8488eaaf02a368e48c4ec1
# Parent  7c73f066cd16a868f9387e9d4d2d2fb87a7a688f
Debounce fallback warning:
In previous versions the fallback option (automatical setting of a fixed setpoint) was only done for communication timeout scenario in combination with a HUD. It is now also applied in case all sensors are rated as out of bounds. The signaling of the fallback warning (including optional automatic setpoint change) is now done taking a 5 seconds debounds time into account.
In case a fallback warning is active, then the only way to reset it is by selecting a new setpoint or by changing the sensor configuration (no change compared to previous implementation

diff -r 7c73f066cd16 -r 66c8a4ff9fc4 Discovery/Src/tCCR.c
--- a/Discovery/Src/tCCR.c	Wed Feb 24 19:18:26 2021 +0100
+++ b/Discovery/Src/tCCR.c	Wed Feb 24 21:03:22 2021 +0100
@@ -82,7 +82,7 @@
 /* Private variables with external access via get_xxx() function -------------*/
 
 /* Private function prototypes -----------------------------------------------*/
-static void tCCR_fallbackToFixedSetpoint(void);
+static uint8_t tCCR_fallbackToFixedSetpoint(void);
 
 #ifndef USART_IR_HUD
 
@@ -252,7 +252,7 @@
     }
 }
 
-
+/* this function is called out of the 100ms callback => to be considered for debouncing */
 uint8_t get_ppO2SensorWeightedResult_cbar(void)
 {
 	static uint8_t lastValidValue = 0;
@@ -273,13 +273,21 @@
     }
     if(count == 0) /* all sensors out of bounds! => return last valid value as workaround till diver takes action */
     {
-    	set_warning_fallback();
-    	retVal = lastValidValue;
+    	if(debounce_warning_fallback(100))
+    	{
+    		set_warning_fallback();
+    		retVal = tCCR_fallbackToFixedSetpoint(); 	/* this function only changes setpoint if option is enabled */
+    	}
+    	if(retVal == 0)
+    	{
+    		retVal = lastValidValue;
+    	}
     }
     else
     {
-       retVal = (uint8_t)(result / count);
-       lastValidValue = retVal;
+    	reset_debounce_warning_fallback();
+		retVal = (uint8_t)(result / count);
+    	lastValidValue = retVal;
     }
     return retVal;
 }
@@ -416,8 +424,9 @@
 #endif
 /* Private functions ---------------------------------------------------------*/
 
-static void tCCR_fallbackToFixedSetpoint(void)
+static uint8_t tCCR_fallbackToFixedSetpoint(void)
 {
+	uint8_t retVal = 0;
     if((stateUsed->mode == MODE_DIVE) && (stateUsed->diveSettings.diveMode == DIVEMODE_CCR) && (stateUsed->diveSettings.CCR_Mode == CCRMODE_Sensors) && (stateUsed->diveSettings.fallbackOption))
     {
         uint8_t setpointCbar, actualGasID;
@@ -429,5 +438,7 @@
         setActualGas_DM(&stateUsedWrite->lifeData,actualGasID,setpointCbar);
 
         set_warning_fallback();
+        retVal = stateUsed->diveSettings.setpoint[1].setpoint_cbar;
     }
+    return retVal;
 }