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changeset 855:012f94ec2fe0 Evo_2_23

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Redefine Deco gas creation function: The old function needed a lot of iteration to get through all gases. With the change to define the first gas in PSCR mode as deco gas for calculation (because the actual gas could be not breathable close to surface => deco planing would be based on > 80% nitrogen increasing the deco prediction higher than necessary) the need showed up to somehow define the first gas as deco gas. Instead of manipulating the gas attribute the deco list creation function was changed to create the list based on gas line pointer information instead of index lists. The new function needs less iterations for sorting and is more flexible regarding gas handling.
author Ideenmodellierer
date Mon, 18 Mar 2024 21:52:25 +0100
parents 48b6a3b1f3f8
children af035b883382
files Common/Src/decom.c
diffstat 1 files changed, 87 insertions(+), 85 deletions(-) [+]
line wrap: on
line diff
--- a/Common/Src/decom.c	Sat Mar 09 20:05:33 2024 +0100
+++ b/Common/Src/decom.c	Mon Mar 18 21:52:25 2024 +0100
@@ -37,10 +37,11 @@
 #include "decom.h"
 
 #include <math.h>
+#include <string.h>
 #include "settings.h"
 #include "calc_crush.h"
 
-#	define	FRACTION_N2_AIR			0.7902
+#define	FRACTION_N2_AIR			0.7902
 
 const float helium_time_constant[16] = {
 										3.68695308808482E-001,
@@ -577,99 +578,100 @@
 }
 
 
+void insertGasIntoList(SGasLine* pGas, SGasLine** pGasList, uint8_t gasInSettings, uint8_t* pGasInSettingsList, uint8_t GasListLength)
+{
+	uint8_t localGasIndex = GasListLength;
+	if(pGas != 0)
+	{
+		while(localGasIndex != 0)	/* first entry */
+		{
+			if(pGasList[localGasIndex-1]->depth_meter > pGas->depth_meter)	/* switch depth of existing gas is deeper then new one => move down */
+			{
+				pGasList[localGasIndex] = pGasList[localGasIndex-1];
+				pGasInSettingsList[localGasIndex] = pGasInSettingsList[localGasIndex - 1];
+				localGasIndex--;
+			}
+			else
+			{
+				break;
+			}
+		}
+		pGasList[localGasIndex] = pGas;
+		pGasInSettingsList[localGasIndex] = gasInSettings;
+	}
+}
 
 void decom_CreateGasChangeList(SDiveSettings* pInput, const SLifeData* pLifeData)
 {
-	int i=0, j = 0;
-	int count = 0;
-	 for(i=0;i< 5;i++)
-				{
-						//FirstGas
+	SGasLine localPSCRFirst;
+	SGasLine *pLocalGasList[5] = {0,0,0,0,0};
+	uint8_t localGasInSettingsList[5] = {0,0,0,0,0};
+
+	uint8_t gasStart = 1;
+	uint8_t gasIndex = 0;
+	uint8_t gasEntryCnt = 0;
 
-								pInput->decogaslist[i].change_during_ascent_depth_meter_otherwise_zero = 0;
-								pInput->decogaslist[i].GasIdInSettings = 255;
-								pInput->decogaslist[i].setPoint_cbar = 0;
-								pInput->decogaslist[i].helium_percentage = 0;
-								pInput->decogaslist[i].nitrogen_percentage = 0;
+	int i=0;
+	for(i=0;i< 5;i++)	/* reset list */
+	{
+		pInput->decogaslist[i].change_during_ascent_depth_meter_otherwise_zero = 0;
+		pInput->decogaslist[i].GasIdInSettings = 255;
+		pInput->decogaslist[i].setPoint_cbar = 0;
+		pInput->decogaslist[i].helium_percentage = 0;
+		pInput->decogaslist[i].nitrogen_percentage = 0;
+	}
+	/* FirstGas
+	 * 0 = special gas, 1 to 5 is OC gas, 6 to 10 is diluent
+	 */
+	pInput->decogaslist[0] = pLifeData->actualGas;
+	/* Add Deco Gases
+	 * special (gasId == 0) is never a deco/travel gas but actual gas only
+	*/
+
+	if(pInput->diveMode != DIVEMODE_OC)
+	{
+		gasStart = 6;	/* CCR or PSCR => CC gaslist */
+	}
+
+	if(pInput->diveMode == DIVEMODE_PSCR)				/* Handle first gas as deco gas */
+	{
+		for(gasIndex = gasStart; gasIndex < gasStart + 5; gasIndex++)
+		{
+			if(pInput->gas[gasIndex].note.ub.first)
+			{
+				if (pLifeData->actualGas.GasIdInSettings != gasIndex)
+				{
+					memcpy(&localPSCRFirst, &pInput->gas[gasIndex], sizeof(SGasLine));
+					localPSCRFirst.depth_meter = calc_MOD(gasIndex);
+					insertGasIntoList(&localPSCRFirst, pLocalGasList, gasIndex, localGasInSettingsList, gasEntryCnt);
+					gasEntryCnt++;
+					break;
 				}
-	//pInput->liveData.dive_time_seconds = 0;
-
-		/* FirstGas
-		 * 0 = special gas, 1 to 5 ist OC gas, 6 to 10 is diluent
-		 */
-
+			}
+		}
+	}
 
 
-		pInput->decogaslist[0] = pLifeData->actualGas;
-
-				/* Add Deco Gases
-				 * special (gasId == 0) is never a deco/travel gas but actual gas only
-				 */
-		if(pInput->diveMode == DIVEMODE_OC)
-		{
-
-				for(i=1;i<= 5;i++)
-				{
-						if(pInput->gas[i].note.ub.active && pInput->gas[i].depth_meter
-							 && (pLifeData->actualGas.GasIdInSettings != i)
-							 &&(pInput->gas[i].depth_meter < pLifeData->depth_meter ) )
-						{
-								count = 1;
-								for(j=1;j<= 5;j++)
-								{
-										if(			(pInput->gas[j].note.ub.active && pInput->gas[j].depth_meter > 0)
-												&&	(pLifeData->actualGas.GasIdInSettings != j) // new hw 160905
-												&&	(pInput->gas[j].depth_meter > pInput->gas[i].depth_meter))
-												count++;
-								}
-								pInput->decogaslist[count].change_during_ascent_depth_meter_otherwise_zero = pInput->gas[i].depth_meter;
-								pInput->decogaslist[count].nitrogen_percentage = 100;
-								pInput->decogaslist[count].nitrogen_percentage -= pInput->gas[i].oxygen_percentage;
-								pInput->decogaslist[count].nitrogen_percentage -= pInput->gas[i].helium_percentage;
-								pInput->decogaslist[count].helium_percentage = pInput->gas[i].helium_percentage;
-								pInput->decogaslist[count].GasIdInSettings = i;
-								pInput->decogaslist[count].AppliedDiveMode = DIVEMODE_OC;
-						}
-				}
-		}
-		else
+	for(gasIndex = gasStart; gasIndex < gasStart + 5; gasIndex++)
+	{
+		if(((pInput->gas[gasIndex].note.ub.active) && (pInput->gas[gasIndex].depth_meter))		/* ready for deco calculation */
+			&& (pLifeData->actualGas.GasIdInSettings != gasIndex)							/* not the actual gas */
+			&& (pInput->gas[gasIndex].depth_meter < pLifeData->depth_meter ))				/* a gas which is on the way to surface */
 		{
-			//divmode CCR or PSCR
-				for(i=6; i <= 10; i++)
-				{
-						if((pInput->gas[i].note.ub.active) && (pInput->gas[i].depth_meter)
-							 && (pLifeData->actualGas.GasIdInSettings != i)
-							 && (pInput->gas[i].depth_meter < pLifeData->depth_meter ))
-						{
-								count = 1;
-								for(j=6;j<= 10;j++)
-								{
-//                    if(pInput->gas[j].note.ub.active && pInput->gas[j].depth_meter > 0 &&pInput->gas[j].depth_meter > pInput->gas[i].depth_meter)
-										if(((pInput->gas[j].note.ub.active) && (pInput->gas[j].depth_meter > 0))
-												&&	(pLifeData->actualGas.GasIdInSettings != j) // new hw 160905
-												&&	(pInput->gas[j].depth_meter > pInput->gas[i].depth_meter))
-												count++;
-								}
-								pInput->decogaslist[count].change_during_ascent_depth_meter_otherwise_zero = pInput->gas[i].depth_meter;
-								pInput->decogaslist[count].nitrogen_percentage = 100;
-								if(pInput->diveMode == DIVEMODE_PSCR)
-								{
-									pInput->decogaslist[count].AppliedDiveMode = DIVEMODE_PSCR;
-									pInput->decogaslist[count].setPoint_cbar = decom_calc_SimppO2_O2based((float)(pInput->gas[i].depth_meter / 10.0 + 1.0), pInput->gas[i].oxygen_percentage, pInput->decogaslist[count].pscr_factor ) * 100;
-									pInput->decogaslist[count].nitrogen_percentage -= pInput->gas[i].oxygen_percentage;
-								}
-								else
-								{
-									pInput->decogaslist[count].nitrogen_percentage -= pInput->gas[i].oxygen_percentage;
-									pInput->decogaslist[count].AppliedDiveMode = DIVEMODE_CCR;
-									pInput->decogaslist[count].setPoint_cbar = pInput->decogaslist[0].setPoint_cbar;		/* assume that current setpoint is kept till end of the dive */
-								}
-								pInput->decogaslist[count].nitrogen_percentage -= pInput->gas[i].helium_percentage;
-								pInput->decogaslist[count].helium_percentage = pInput->gas[i].helium_percentage;
-								pInput->decogaslist[count].GasIdInSettings = i;
-						}
-				}
+			insertGasIntoList(&pInput->gas[gasIndex], pLocalGasList, gasIndex, localGasInSettingsList, gasEntryCnt);
+			gasEntryCnt++;
 		}
+	}
+	for(gasIndex = 1; gasIndex < gasEntryCnt+1; gasIndex++)									/* move gasLine Information into deco List */
+	{
+		pInput->decogaslist[gasIndex].change_during_ascent_depth_meter_otherwise_zero = pLocalGasList[gasIndex-1]->depth_meter;
+		pInput->decogaslist[gasIndex].nitrogen_percentage = 100;
+		pInput->decogaslist[gasIndex].nitrogen_percentage -= pLocalGasList[gasIndex-1]->oxygen_percentage;
+		pInput->decogaslist[gasIndex].nitrogen_percentage -= pLocalGasList[gasIndex-1]->helium_percentage;
+		pInput->decogaslist[gasIndex].helium_percentage = pLocalGasList[gasIndex-1]->helium_percentage;
+		pInput->decogaslist[gasIndex].GasIdInSettings = localGasInSettingsList[gasIndex-1];
+		pInput->decogaslist[gasIndex].AppliedDiveMode = pInput->diveMode;
+	}
 }
 void test_decom_CreateGasChangeList(void)
 {