NC logic for button. 2 button behaviors. some suggestions implemented

Software/Software.ino

@@ -138,10 +138,11 @@ unsigned long timeSpentInFaultedMode = 0;
 #ifdef EQUIPMENT_STOP_BUTTON
 volatile unsigned long equipment_button_press_time = 0;           // Time when button is pressed
 const unsigned long equipment_button_long_press_duration = 5000;  // 5 seconds for long press
-int equipment_button_lastState = LOW;                             // the previous state from the input pin
+int equipment_button_lastState = HIGH;                            // the previous state from the input pin NC
 int equipment_button_currentState;                                // the current reading from the input pin
 unsigned long equipment_button_pressedTime = 0;
 unsigned long equipment_button_releasedTime = 0;
+bool first_run_after_boot = true;
 #endif
 TaskHandle_t main_loop_task;
 TaskHandle_t connectivity_loop_task;
@@ -352,9 +353,8 @@ void init_stored_settings() {
   static uint32_t temp = 0;
   settings.begin("batterySettings", false);
 
-  //allways get the emergency stop status
-  temp = settings.getBool("EMERGENGY_STOP", false);
-  datalayer.system.settings.equipment_stop_active = temp;
+  // Always get the emergency stop status
+  datalayer.system.settings.equipment_stop_active = settings.getBool("EMERGENCY_STOP", false);
   if (datalayer.system.settings.equipment_stop_active) {
     set_event(EVENT_EMERGENCY_STOP, 1);
   }
@@ -363,9 +363,7 @@ void init_stored_settings() {
   settings.clear();  // If this clear function is executed, no settings will be read from storage
 
   //always save the emergency stop status
-  if (datalayer.system.settings.equipment_stop_active) {
-    settings.putBool("EMERGENGY_STOP", datalayer.system.settings.equipment_stop_active);
-  }
+  settings.putBool("EMERGENCY_STOP", datalayer.system.settings.equipment_stop_active);
 
 #endif
 
@@ -564,12 +562,24 @@ void init_battery() {
 #ifdef EQUIPMENT_STOP_BUTTON
 
 void monitor_equipment_stop_button() {
+  //NC Logic
   // read the state of the switch/button:
   equipment_button_currentState = digitalRead(EQUIPMENT_STOP_PIN);
 
-  if (equipment_button_lastState == LOW && equipment_button_currentState == HIGH)  // button is pressed
+  if (equipment_stop_behavior == TOGGLE_SWITCH) {
+    if (equipment_button_lastState != equipment_button_currentState || first_run_after_boot) {
+      if (!equipment_button_currentState) {
+        // Changed to ON – initiating equipment stop.
+        setBatteryPause(true, true, true);
+      } else {
+        // Changed to OFF – ending equipment stop.
+        setBatteryPause(false, false, false);
+      }
+    }
+  } else if (equipment_stop_behavior == PERSISTENT_ACTIVATION_SWITCH) {
+    if (equipment_button_lastState == HIGH && equipment_button_currentState == LOW) {  // button is pressed
       equipment_button_pressedTime = millis();
-  else if (equipment_button_lastState == HIGH && equipment_button_currentState == LOW) {  // button is released
+    } else if (equipment_button_lastState == LOW && equipment_button_currentState == HIGH) {  // button is released
       equipment_button_releasedTime = millis();
 
       long pressDuration = equipment_button_releasedTime - equipment_button_pressedTime;
@@ -582,14 +592,18 @@ void monitor_equipment_stop_button() {
         setBatteryPause(false, false, false);
       }
     }
+  }
 
   // save the the last state
   equipment_button_lastState = equipment_button_currentState;
+
+  if (first_run_after_boot) {
+    first_run_after_boot = false;
+  }
 }
 
 void init_equipment_stop_button() {
-
-  //using external pulldown resistors
+  //using external pullup resistors NC
   pinMode(EQUIPMENT_STOP_PIN, INPUT);
 }
 
@@ -901,7 +915,7 @@ void init_serialDataLink() {
 
 void store_settings_emergency_stop() {
   settings.begin("batterySettings", false);
-  settings.putBool("EMERGENGY_STOP", datalayer.system.settings.equipment_stop_active);
+  settings.putBool("EMERGENCY_STOP", datalayer.system.settings.equipment_stop_active);
   settings.end();
 }
 

Software/USER_SETTINGS.cpp

@@ -48,6 +48,13 @@ const char* mqtt_password = "REDACTED";  // Set NULL for no password
 #endif                                   // USE_MQTT
 #endif                                   // WIFI
 
+#ifdef EQUIPMENT_STOP_BUTTON
+// Equipment stop button behavior. Use NC button for safety reasons.
+//TOGGLE_SWITCH                - activated while pressed, deactivated when released, button state is reflected in the emulator state
+//PERSISTENT_ACTIVATION_SWITCH - short press to activate, long press to deactivate, state is persisted between reboots
+volatile STOP_BUTTON_BEHAVIOR equipment_stop_behavior = TOGGLE_SWITCH;
+#endif
+
 /* Charger settings (Optional, when using generator charging) */
 volatile float CHARGER_SET_HV = 384;      // Reasonably appropriate 4.0v per cell charging of a 96s pack
 volatile float CHARGER_MAX_HV = 420;      // Max permissible output (VDC) of charger

Software/USER_SETTINGS.h

@@ -65,7 +65,7 @@
 #define MDNSRESPONDER  //Enable this line to enable MDNS, allows battery monitor te be found by .local address. Requires WEBSERVER to be enabled.
 #define LOAD_SAVED_SETTINGS_ON_BOOT  //Enable this line to read settings stored via the webserver on boot (overrides Wifi/battery settings set below)
 //#define FUNCTION_TIME_MEASUREMENT  // Enable this to record execution times and present them in the web UI (WARNING, raises CPU load, do not use for production)
-//#define EQUIPMENT_STOP_BUTTON      // Enable this to have a emergengy/equipment stop button connected to board
+//#define EQUIPMENT_STOP_BUTTON      // Enable this to allow an emergency/equipment stop button connected to the Battery-Emulator to disengage the battery
 
 /* MQTT options */
 // #define MQTT  // Enable this line to enable MQTT
@@ -120,6 +120,11 @@ extern volatile float CHARGER_END_A;
 extern bool charger_HV_enabled;
 extern bool charger_aux12V_enabled;
 
+#ifdef EQUIPMENT_STOP_BUTTON
+typedef enum { TOGGLE_SWITCH = 0, PERSISTENT_ACTIVATION_SWITCH = 1 } STOP_BUTTON_BEHAVIOR;
+extern volatile STOP_BUTTON_BEHAVIOR equipment_stop_behavior;
+#endif
+
 #ifdef WIFICONFIG
 extern IPAddress local_IP;
 // Set your Gateway IP address

Software/src/devboard/safety/safety.cpp

@@ -198,7 +198,7 @@ void update_machineryprotection() {
 //battery pause status begin
 void setBatteryPause(bool pause_battery, bool pause_CAN, bool emergency_stop) {
 
-  //fist handle emergency stop / resume
+  // First handle emergency stop / resume
   if (emergency_stop && !datalayer.system.settings.equipment_stop_active) {
     datalayer.system.settings.equipment_stop_active = true;
     store_settings_emergency_stop();

Software/src/devboard/webserver/webserver.cpp

@@ -167,7 +167,7 @@ void init_webserver() {
   });
 
   // Route for emergency stop/resume
-  server.on("/estop", HTTP_GET, [](AsyncWebServerRequest* request) {
+  server.on("/emergencyStop", HTTP_GET, [](AsyncWebServerRequest* request) {
     if (WEBSERVER_AUTH_REQUIRED && !request->authenticate(http_username, http_password))
       return request->requestAuthentication();
     if (request->hasParam("stop")) {
@@ -908,7 +908,7 @@ String processor(const String& var) {
     content +=
         "var xhr=new "
         "XMLHttpRequest();xhr.onload=function() { "
-        "window.location.reload();};xhr.open('GET','/estop?stop='+stop,true);xhr.send();";
+        "window.location.reload();};xhr.open('GET','/emergencyStop?stop='+stop,true);xhr.send();";
     content += "}";
     content += "</script>";