improvement: low voltage cut off as web ui option

data/igate_conf.json

@@ -66,6 +66,7 @@
         "sendBatteryVoltage": false,
         "externalVoltageMeasurement": false,
         "externalVoltagePin": 34,
-        "lowPowerMode": false
+        "lowPowerMode": false,
+        "lowVoltageCutOff": 0
     }
 }

data_embed/index.html

@@ -1280,6 +1280,25 @@
                                             >
                                         </div>
                                     </div>
+                                    <div class="col-12 mt-3">
+                                        <label
+                                            for="other.lowVoltageCutOff"
+                                            class="form-label"
+                                            >Low voltage cut off <small>(Deep sleep below specific voltage)</small></label
+                                        >
+                                        <input
+                                            type="text"
+                                            name="other.lowVoltageCutOff"
+                                            id="other.lowVoltageCutOff"
+                                            placeholder="0"
+                                            min="0"
+                                            step="0.01"
+                                            class="form-control"
+                                        />
+                                        <div class="form-text">
+                                            MCU will deep sleep when below provided battery voltage to save power. Set to <strong>0</strong> if you don't want this option. <u>Please calibrate your voltage reading first!</u>
+                                        </div>
+                                    </div>
                                 </div>
                             </div>
                         </div>

data_embed/script.js

@@ -215,6 +215,7 @@ function loadSettings(settings) {
 
     // Experimental
     document.getElementById("other.lowPowerMode").checked = settings.other.lowPowerMode;
+    document.getElementById("other.lowVoltageCutOff").value = settings.other.lowVoltageCutOff || 0
 
     updateImage();
     refreshSpeedStandard();

src/LoRa_APRS_iGate.cpp

@@ -154,7 +154,9 @@ void loop() {
         return; // Don't process IGate and Digi during OTA update
     }
 
-    BATTERY_Utils::checkIfShouldSleep();
+    if (Config.lowVoltageCutOff > 0) {
+        BATTERY_Utils::checkIfShouldSleep();
+    }
 
     thirdLine = Utils::getLocalIP();
 

src/battery_utils.cpp

@@ -1,12 +1,6 @@
 #include "battery_utils.h"
 #include "configuration.h"
 #include "pins_config.h"
-//#include "lora_utils.h"
-
-// Uncomment if you want to monitor voltage and sleep if voltage is too low (<3.15V)
-//#define LOW_VOLTAGE_CUTOFF
-
-float cutOffVoltage = 3.15;
 
 extern Configuration    Config;
 extern uint32_t         lastBatteryCheck;
@@ -65,24 +59,15 @@ namespace BATTERY_Utils {
     }
 
     void checkIfShouldSleep() {
-        #ifdef LOW_VOLTAGE_CUTOFF
         if (lastBatteryCheck == 0 || millis() - lastBatteryCheck >= 15 * 60 * 1000) {
             lastBatteryCheck = millis();
 
             float voltage = checkBattery();
             
-            if (voltage < cutOffVoltage) {
-                /*  Send message over APRS-IS or over LoRa???
-                
-                APRS_IS_Utils::upload("battery is low = sleeping")
-
-                LoRa_Utils::sendNewMessage("battery is low = sleeping");
-                
-                */
+            if (voltage < Config.lowVoltageCutOff) {
                 ESP.deepSleep(1800000000); // 30 min sleep (60s = 60e6)
             }
         }
-        #endif
     }
 
 }

src/configuration.cpp

@@ -97,6 +97,7 @@ void Configuration::writeFile() {
     data["ota"]["password"] = ota.password;
 
     data["other"]["lowPowerMode"] = lowPowerMode;
+    data["other"]["lowVoltageCutOff"] = lowVoltageCutOff;
 
     serializeJson(data, configFile);
 
@@ -163,6 +164,7 @@ bool Configuration::readFile() {
         tnc.acceptOwn                   = data["tnc"]["acceptOwn"].as<bool>();
 
         lowPowerMode                    = data["other"]["lowPowerMode"].as<bool>();
+        lowVoltageCutOff                = data["other"]["lowVoltageCutOff"].as<double>();
 
         int stationMode                     = data["stationMode"].as<int>(); // deprecated but need to specify config version
 
@@ -336,6 +338,7 @@ void Configuration::init() {
     externalVoltagePin = 34;
 
     lowPowerMode = false;
+    lowVoltageCutOff = 0;
 
     Serial.println("todo escrito");
 }

src/configuration.h

@@ -115,6 +115,7 @@ public:
     bool                  externalVoltageMeasurement;
     int                   externalVoltagePin;
     bool                  lowPowerMode;
+    double                lowVoltageCutOff;
     std::vector<WiFi_AP>  wifiAPs;
     WiFi_Auto_AP          wifiAutoAP;
     Beacon                beacon; // new

src/web_utils.cpp

@@ -156,6 +156,7 @@ namespace WEB_Utils {
         }
 
         Config.lowPowerMode = request->hasParam("other.lowPowerMode", true);
+        Config.lowVoltageCutOff = request->getParam("other.lowVoltageCutOff", true)->value().toDouble();
 
         Config.writeFile();