Merge branch 'master' into master

lib/obp60task/OBPSensorTask.cpp

@@ -88,8 +88,16 @@ void sensorTask(void *param){
     double voffset = (api->getConfig()->getConfigItem(api->getConfig()->vOffset,true)->asString()).toFloat();
     double vslope = (api->getConfig()->getConfigItem(api->getConfig()->vSlope,true)->asString()).toFloat();
     if(String(powsensor1) == "off"){
-        sensors.batteryVoltage = (float(analogRead(OBP_ANALOG0)) * 3.3 / 4096 + 0.17) * 20;   // Vin = 1/20
+        #ifdef VOLTAGE_SENSOR
+        sensors.batteryVoltage = (float(analogRead(OBP_ANALOG0)) * 3.3 / 4096 + 0.53) * 2;   // Vin = 1/2 for OBP40
+        #else
+        sensors.batteryVoltage = (float(analogRead(OBP_ANALOG0)) * 3.3 / 4096 + 0.17) * 20;   // Vin = 1/20 for OBP60    
+        #endif
         sensors.batteryVoltage = sensors.batteryVoltage * vslope + voffset; // Calibration
+        #ifdef LIPO_ACCU_1200
+        sensors.BatteryChargeStatus = 0;    // Set to discharging
+        sensors.batteryLevelLiPo = 0;       // Level 0...100%
+        #endif
         sensors.batteryCurrent = 0;
         sensors.batteryPower = 0;
         // Fill average arrays with start values
@@ -459,8 +467,29 @@ void sensorTask(void *param){
         // Send supply voltage value all 1s
         if(millis() > starttime5 + 1000 && String(powsensor1) == "off"){
             starttime5 = millis();
-            sensors.batteryVoltage = (float(analogRead(OBP_ANALOG0)) * 3.3 / 4096 + 0.17) * 20;   // Vin = 1/20
+            #ifdef VOLTAGE_SENSOR
+            sensors.batteryVoltage = (float(analogRead(OBP_ANALOG0)) * 3.3 / 4096 + 0.53) * 2;   // Vin = 1/2 for OBP40
+            #else
+            sensors.batteryVoltage = (float(analogRead(OBP_ANALOG0)) * 3.3 / 4096 + 0.17) * 20;   // Vin = 1/20 for OBP60    
+            #endif
             sensors.batteryVoltage = sensors.batteryVoltage * vslope + voffset; // Calibration
+            #ifdef LIPO_ACCU_1200
+            if(sensors.batteryVoltage > 4.1){
+                sensors.BatteryChargeStatus = 1;    // Charging active
+            }
+            else{
+                sensors.BatteryChargeStatus = 0;    // Discharging
+            }
+            // Polynomfit for LiPo capacity calculation for 3,7V LiPo accus, 0...100%
+            sensors.batteryLevelLiPo = sensors.batteryVoltage * sensors.batteryVoltage * 174.9513 + sensors.batteryVoltage * 1147,7686 + 1868.5120;
+            // Limiter
+            if(sensors.batteryLevelLiPo > 100){
+                sensors.batteryLevelLiPo = 100;
+            }
+            if(sensors.batteryLevelLiPo < 0){
+                sensors.batteryLevelLiPo = 0;
+            }
+            #endif
             // Save new data in average array
             batV.reading(int(sensors.batteryVoltage * 100));
             // Calculate the average values for different time lines from integer values

lib/obp60task/Pagedata.h

@@ -31,6 +31,8 @@ typedef struct{
   double batteryVoltage300 = 0; // Sliding average over 300 values
   double batteryCurrent300 = 0;
   double batteryPower300 = 0;
+  double batteryLevelLiPo = 0;  // Battery level for OBP40 LiPo accu
+  int BatteryChargeStatus = 0;  // LiPo charge status: 0 = discharge, 1 = loading activ
   double solarVoltage = 0;
   double solarCurrent = 0;
   double solarPower = 0;

lib/obp60task/obp60task.cpp

@@ -309,13 +309,42 @@ void registerAllPages(PageList &list){
 
 // Undervoltage detection for shutdown display
 void underVoltageDetection(GwApi *api, CommonData &common){
+    float actVoltage = 0;
+    float minVoltage = 0;
     // Read settings
     float vslope = uint(api->getConfig()->getConfigItem(api->getConfig()->vSlope,true)->asFloat());
     float voffset = uint(api->getConfig()->getConfigItem(api->getConfig()->vOffset,true)->asFloat());
     // Read supply voltage
-    float actVoltage = (float(analogRead(OBP_ANALOG0)) * 3.3 / 4096 + 0.17) * 20;   // V = 1/20 * Vin
+    #if defined VOLTAGE_SENSOR && defined LIPO_ACCU_1200
+    actVoltage = (float(analogRead(OBP_ANALOG0)) * 3.3 / 4096 + 0.53) * 2;   // Vin = 1/2 for OBP40
+    minVoltage = 3.65;  // Absolut minimum volatge for 3,7V LiPo accu
+    #else
+    actVoltage = (float(analogRead(OBP_ANALOG0)) * 3.3 / 4096 + 0.17) * 20;   // Vin = 1/20 for OBP60
+    minVoltage = MIN_VOLTAGE;
+    #endif
     actVoltage = actVoltage * vslope + voffset;
-    if(actVoltage < MIN_VOLTAGE){
+    if(actVoltage < minVoltage){
+        #if defined VOLTAGE_SENSOR && defined LIPO_ACCU_1200
+        // Switch off all power lines
+        setPortPin(OBP_BACKLIGHT_LED, false);   // Backlight Off
+        setFlashLED(false);                     // Flash LED Off            
+        buzzer(TONE4, 20);                      // Buzzer tone 4kHz 20ms
+        // Shutdown EInk display
+        getdisplay().setFullWindow();               // Set full Refresh
+        //getdisplay().setPartialWindow(0, 0, getdisplay().width(), getdisplay().height()); // Set partial update
+        getdisplay().fillScreen(common.bgcolor);    // Clear screen
+        getdisplay().setTextColor(common.fgcolor);
+        getdisplay().setFont(&Ubuntu_Bold20pt7b);
+        getdisplay().setCursor(65, 150);
+        getdisplay().print("Undervoltage");
+        getdisplay().setFont(&Ubuntu_Bold8pt7b);
+        getdisplay().setCursor(65, 175);
+        getdisplay().print("To wake up press reset");
+        getdisplay().nextPage();                // Partial update
+        getdisplay().powerOff();                // Display power off
+        setPortPin(OBP_POWER_EPD, false);       // Power off ePaper display
+        setPortPin(OBP_POWER_SD, false);        // Power off SD card
+        #else
         // Switch off all power lines
         setPortPin(OBP_BACKLIGHT_LED, false);   // Backlight Off
         setFlashLED(false);                     // Flash LED Off            
@@ -328,8 +357,12 @@ void underVoltageDetection(GwApi *api, CommonData &common){
         getdisplay().setFont(&Ubuntu_Bold20pt7b);
         getdisplay().setCursor(65, 150);
         getdisplay().print("Undervoltage");
+        getdisplay().setFont(&Ubuntu_Bold8pt7b);
+        getdisplay().setCursor(65, 175);
+        getdisplay().print("To wake up repower system");
         getdisplay().nextPage();                // Partial update
         getdisplay().powerOff();                // Display power off
+        #endif
         // Stop system
         while(true){
             esp_deep_sleep_start();             // Deep Sleep without weakup. Weakup only after power cycle (restart).

lib/obp60task/platformio.ini

@@ -2,7 +2,10 @@
 #if you want a pio run to only build
 #your special environments you can set this here
 #by uncommenting the next line
-default_envs = obp60_s3
+
+default_envs = 
+    obp60_s3
+    obp40_s3
 
 [env:obp60_s3]
 platform = espressif32@6.8.1
@@ -91,6 +94,8 @@ build_flags=
     -D DISABLE_DIAGNOSTIC_OUTPUT    #Disable diagnostic output for GxEPD2 lib
     -D BOARD_OBP40S3                #Board OBP40 V1.0 with ESP32S3 SKU:DIE07300S (CrowPanel 4.2)
     -D DISPLAY_GDEY042T81           #new E-Ink display from Waveshare, R10 2.2 ohm
+    -D LIPO_ACCU_1200               #Hardware extension, LiPo accu 3,7V 1200mAh
+    -D VOLTAGE_SENSOR               #Hardware extension, LiPo voltage sensor with two resistors 
     ${env.build_flags}
 upload_port = /dev/ttyUSB0          #OBP40 download via external USB/Serail converter
 upload_protocol = esptool           #firmware upload via USB OTG seriell, by first upload need to set the ESP32-S3 in the upload mode with shortcut GND to Pin27