--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Discovery/Src/tInfoPreDive.c	Tue Feb 11 18:12:00 2025 +0100
@@ -0,0 +1,245 @@
+///////////////////////////////////////////////////////////////////////////////
+/// -*- coding: UTF-8 -*-
+///
+/// \file   Discovery/Src/tInfoPredive.c
+/// \brief  Show information which might be of interest during predive checks
+/// \author heinrichs weikamp gmbh
+/// \date   23-Feb-2015
+///
+/// \details
+///
+/// $Id$
+///////////////////////////////////////////////////////////////////////////////
+/// \par Copyright (c) 2014-2018 Heinrichs Weikamp gmbh
+///
+///     This program is free software: you can redistribute it and/or modify
+///     it under the terms of the GNU General Public License as published by
+///     the Free Software Foundation, either version 3 of the License, or
+///     (at your option) any later version.
+///
+///     This program is distributed in the hope that it will be useful,
+///     but WITHOUT ANY WARRANTY; without even the implied warranty of
+///     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+///     GNU General Public License for more details.
+///
+///     You should have received a copy of the GNU General Public License
+///     along with this program.  If not, see <http://www.gnu.org/licenses/>.
+//////////////////////////////////////////////////////////////////////////////
+
+/* Includes ------------------------------------------------------------------*/
+
+#include "gfx_engine.h"
+#include "gfx_fonts.h"
+#include "tHome.h"
+#include "tInfo.h"
+#include "tInfoPreDive.h"
+#include "tMenuEdit.h"
+#include "data_exchange_main.h"
+
+#include <string.h>
+#include <inttypes.h>
+
+#define MEASURE_INTERVALL		(10u)	/* refresh function should be called every 100ms => one second interval */
+#define HISTORY_BUF_SIZE 		(240u)	/* store 240 entries a one second */
+#define INVALID_PRESSURE_VALUE	(0xFFFF)
+#define DELTA_SHIFT				(50)	/* the graph printers do not support negative values => shift data into positiv area (assumes pressure range +- 300mBar) */
+
+/* Private variables ---------------------------------------------------------*/
+static uint16_t surfacePressureStart = INVALID_PRESSURE_VALUE;
+static uint16_t surfaceTemperatureStart = 0;
+static uint16_t pressureHistory[HISTORY_BUF_SIZE];
+static uint8_t pressureHistoryIndex = 0;
+static uint16_t temperatureHistory[HISTORY_BUF_SIZE];
+static uint8_t temperatureHistoryIndex = 0;
+static uint8_t measureCnt = MEASURE_INTERVALL;
+static uint8_t referenceSensor = 0xff;
+
+/* Exported functions --------------------------------------------------------*/
+
+
+
+static void storePressureValue(int16_t deltapressure_mBar)
+{
+	uint16_t newValue = DELTA_SHIFT - deltapressure_mBar;	/* invert value because graph is drawing larger values to bottom direction */
+	if(pressureHistoryIndex + 2 < HISTORY_BUF_SIZE)
+	{
+		pressureHistoryIndex++;
+		pressureHistory[pressureHistoryIndex] = newValue;
+		pressureHistoryIndex++;
+		pressureHistory[pressureHistoryIndex] = newValue;
+	}
+	else
+	{
+		memcpy (&pressureHistory[0],&pressureHistory[2],sizeof(pressureHistory) - 2);
+		pressureHistory[pressureHistoryIndex] = newValue;
+	}
+}
+
+static void storeTemperatureValue(uint16_t temperature)
+{
+	uint16_t newValue =  temperature;		/* todo: consider negativ temperature */
+	if(temperatureHistoryIndex + 2 < HISTORY_BUF_SIZE)
+	{
+		temperatureHistoryIndex++;
+		temperatureHistory[temperatureHistoryIndex] = newValue;
+		temperatureHistoryIndex++;
+		temperatureHistory[temperatureHistoryIndex] = newValue;
+	}
+	else
+	{
+		memcpy (&temperatureHistory[0],&temperatureHistory[2],sizeof(temperatureHistory) - 2);
+		temperatureHistory[temperatureHistoryIndex] = newValue;
+	}
+}
+
+void openInfo_PreDive()
+{
+	const SDiveState *pStateReal = stateRealGetPointer();
+	uint8_t index = 0;
+	SSensorDataDiveO2* pDiveO2Data = NULL;
+	SSettings *pSettings = settingsGetPointer();
+    set_globalState(StIPREDIVE);
+
+    surfacePressureStart = 0;
+    pressureHistoryIndex = 0;
+    referenceSensor = 0xff;
+
+	for(index = 0; index < EXT_INTERFACE_MUX_OFFSET; index++)
+	{
+		if((pSettings->ext_sensor_map[index] == SENSOR_DIGO2M) &&  pStateReal->lifeData.ppO2Sensor_bar[index] != 0)
+		{
+			referenceSensor = index;
+			pDiveO2Data = (SSensorDataDiveO2*)stateRealGetPointer()->lifeData.extIf_sensor_data[index];
+			if(pDiveO2Data->pressure != 0)
+			{
+				surfacePressureStart = pDiveO2Data->pressure / 1000;
+				surfaceTemperatureStart = pDiveO2Data->temperature;
+			}
+			break;
+		}
+	}
+    for(index = 0; index < HISTORY_BUF_SIZE; index++)
+    {
+    	pressureHistory[index] = DELTA_SHIFT;
+    	temperatureHistory[index] = 0;
+    }
+}
+
+void refreshInfo_PreDive(GFX_DrawCfgScreen s)
+{
+	const SDiveState *pStateReal = stateRealGetPointer();
+	static int16_t deltaPressure = 0;
+	static uint16_t temperature = 0;
+	SSettings *pSettings = settingsGetPointer();
+	uint8_t index = 0;
+    char text[31];
+    SSensorDataDiveO2* pDiveO2Data = NULL;
+    point_t start, stop;
+
+    SWindowGimpStyle wintempppO2;
+    SWindowGimpStyle wintemptemp;
+
+    if(--measureCnt == 0)
+    {
+    	measureCnt = MEASURE_INTERVALL;
+    	pDiveO2Data = (SSensorDataDiveO2*)stateRealGetPointer()->lifeData.extIf_sensor_data[referenceSensor];
+    	if(pDiveO2Data->pressure != 0)
+    	{
+    		if(surfacePressureStart == 0)
+    		{
+    			surfacePressureStart = pDiveO2Data->pressure / 1000;
+    			surfaceTemperatureStart = pDiveO2Data->temperature;
+    		}
+    		deltaPressure = (pDiveO2Data->pressure / 1000) - surfacePressureStart;
+    		storePressureValue(deltaPressure);
+    		temperature = pDiveO2Data->temperature;
+    		storeTemperatureValue(temperature);
+    	}
+    }
+
+    text[0] = '\001';
+	text[1] = TXT_PreDive;
+	text[2] = 0;
+	tInfo_write_content_simple(  30, 770, ME_Y_LINE_BASE, &FontT48, text, CLUT_MenuPageHardware);
+
+	for(index = 0; index < EXT_INTERFACE_MUX_OFFSET; index++)
+	{
+		if((pSettings->ext_sensor_map[index] == SENSOR_DIGO2M) || (pSettings->ext_sensor_map[index] == SENSOR_ANALOG))
+		{
+			snprintf(text,32,"%c%c%d: %01.2f", TXT_2BYTE, TXT2BYTE_Sensor, index, pStateReal->lifeData.ppO2Sensor_bar[index]);
+			tInfo_write_content_simple(  5, 780, ME_Y_LINE1 + (index * ME_Y_LINE_STEP), &FontT48, text, CLUT_Font020);
+		}
+		else if(pSettings->ext_sensor_map[index] == SENSOR_CO2M)
+		{
+			snprintf(text,32,"CO2: %4ld", pStateReal->lifeData.CO2_data.CO2_ppm);
+			tInfo_write_content_simple(  5, 780, ME_Y_LINE5, &FontT48, text, CLUT_Font020);
+		}
+	}
+
+    wintempppO2.left = 350;
+    wintempppO2.right = 590;
+
+    wintemptemp.left = 350;
+    wintemptemp.right = 590;
+
+   	wintempppO2.top = ME_Y_LINE3;
+   	wintempppO2.bottom = wintempppO2.top + DELTA_SHIFT * 2;
+   	wintemptemp.top = ME_Y_LINE5;
+   	wintemptemp.bottom = wintemptemp.top + DELTA_SHIFT * 2;
+
+    start.x =  wintempppO2.left - 5;
+    start.y =  480 - wintemptemp.bottom - 5;
+    stop.x = wintempppO2.right- start.x + 5;
+    stop.y = DELTA_SHIFT * 2 + 10;
+    GFX_draw_box(&s, start, stop,1, CLUT_Font020);
+
+    start.y =  480 - wintempppO2.bottom - 5;
+    GFX_draw_box(&s, start, stop,1, CLUT_Font020);
+
+    if(pSettings->FlipDisplay)
+    {
+        wintempppO2.left = 800 - 590;
+        wintempppO2.right = 800 - 350;
+        wintemptemp.left = 800 - 590;
+        wintemptemp.right = 800 - 350;
+    }
+    GFX_graph_print(&s, &wintempppO2, 1,1,0, DELTA_SHIFT * 2, pressureHistory, HISTORY_BUF_SIZE, CLUT_Font030, NULL);
+
+    GFX_graph_print(&s, &wintemptemp, 1,1, surfaceTemperatureStart - 2000, surfaceTemperatureStart + 10000, temperatureHistory, HISTORY_BUF_SIZE, CLUT_Font030, NULL);
+
+/* Graph labeling */
+    snprintf(text,32,"%c%c", TXT_2BYTE, TXT2BYTE_CounterLung);
+   	tInfo_write_content_simple(  350, 795, ME_Y_LINE2, &FontT48, text, CLUT_Font020);
+
+   	snprintf(text,32,"\002\016\016%c%c", TXT_2BYTE, TXT2BYTE_Pressure);
+   	tInfo_write_content_simple(  500, 795, ME_Y_LINE3, &FontT48, text, CLUT_Font020);
+    snprintf(text,32,"\002%d",deltaPressure);
+	tInfo_write_content_simple(  500, 795, ME_Y_LINE4, &FontT48, text, CLUT_Font020);
+	snprintf(text,32,"\002\016\016%c",TXT_Temperature);
+	tInfo_write_content_simple(  300, 795, ME_Y_LINE5, &FontT48, text, CLUT_Font020);
+    snprintf(text,32,"\002%2.2f",(temperature / 1000.0));
+	tInfo_write_content_simple(  300, 795, ME_Y_LINE6, &FontT48, text, CLUT_Font020);
+}
+
+void sendActionToInfoPreDive(uint8_t sendAction)
+{
+    switch(sendAction)
+    {
+    	case ACTION_BUTTON_BACK:
+    	//	exitInfo();
+    		exitMenuEdit_to_Menu_with_Menu_Update();
+    			break;
+
+    	case ACTION_BUTTON_ENTER:
+    		break;
+		case ACTION_BUTTON_NEXT:
+			break;
+		case ACTION_TIMEOUT:
+		case ACTION_MODE_CHANGE:
+	    case ACTION_IDLE_TICK:
+	    case ACTION_IDLE_SECOND:
+		default:
+	        break;
+    }
+}
+