Working on migrating to using websockets for the UI

platformio.ini

@@ -13,7 +13,7 @@ platform = espressif32
 board = esp32dev
 framework = arduino
 ;lib_deps =
-    
+;;  esp32async/ESPAsyncWebServer@^3.12.0    
 
 ; upload via OTA
 upload_protocol = espota

src/core/configuration.h

@@ -0,0 +1,3 @@
+// Contains configuration constants:
+
+#define FIRMWARE_VERSION "1.0.2"

src/core/dashboard_state.cpp

@@ -0,0 +1,36 @@
+#include "dashboard_state.h"
+
+
+void DashboardState::begin() {}
+
+void DashboardState::update()
+{
+    unsigned long seconds = millis() / 1000;
+
+    unsigned long days = seconds / 86400;
+    seconds %= 86400;
+
+    unsigned long hours = seconds / 3600;
+    seconds %= 3600;
+
+    unsigned long minutes = seconds / 60;
+    seconds %= 60;
+
+
+    char buffer[64];
+
+    snprintf(
+        buffer,
+        sizeof(buffer),
+        "%lu days %02lu:%02lu:%02lu",
+        days,
+        hours,
+        minutes,
+        seconds
+    );
+
+
+    uptime = String(buffer);
+
+    firmwareVersion = FIRMWARE_VERSION;
+}

src/core/dashboard_state.h

@@ -0,0 +1,19 @@
+#pragma once
+
+#include <Arduino.h>
+
+#include "configuration.h"
+
+class DashboardState
+{
+public:
+    
+    void begin();
+    void update();
+
+
+    String uptime;
+
+    String firmwareVersion;
+
+};

src/main.cpp

@@ -3,8 +3,9 @@
 
 #include <Arduino.h>
 
-#include "services/service_manager.h"
+#include "core/dashboard_state.h"
 
+#include "services/service_manager.h"
 #include "services/wifi_service.h"
 #include "services/ota_service.h"
 #include "services/web_service.h"
@@ -12,12 +13,15 @@
 #include "tasks/system_task.h"
 
 
+DashboardState dashboardState;
+
+
 ServiceManager services;
 
 
 WiFiService wifi;
 OTAService ota;
-WebService web;
+WebService web(dashboardState);
 
 
 SystemTask systemTask(services);
@@ -28,7 +32,6 @@ void setup()
 {
     Serial.begin(115200);
 
-
     services.add(&wifi);
     services.add(&ota);
     services.add(&web);

src/services/service_manager.cpp

@@ -18,7 +18,7 @@ void ServiceManager::begin()
 }
 
 
-void ServiceManager::update()
+void ServiceManager::tick()
 {
     for(uint8_t i = 0; i < count; i++)
     {

src/services/service_manager.h

@@ -11,7 +11,7 @@ public:
 
     void begin();
 
-    void update();
+    void tick();
 
 private:
 

src/services/web_service.cpp

@@ -1,10 +1,9 @@
 #include "web_service.h"
 
-#define FIRMWARE_VERSION "1.0.1"
+WebService::WebService(DashboardState& state)
-
-WebService::WebService()
     :
     Service("Web", 10),
+    dashboardState(state),
     server(80)
 {
 }
@@ -134,7 +133,7 @@ void WebService::begin() {
         server.send(
                     200,
                     "text/plain",
-                    FIRMWARE_VERSION
+                    dashboardState.firmwareVersion
                     );
     });
 
@@ -143,7 +142,7 @@ void WebService::begin() {
         server.send(
                     200,
                     "text/plain",
-                    formatUptime()
+                    dashboardState.uptime
                     );
                     
     });
@@ -157,5 +156,6 @@ void WebService::begin() {
 
 void WebService::update()
 {
+    dashboardState.update();
     server.handleClient();
 }

src/services/web_service.h

@@ -1,6 +1,7 @@
 #pragma once
 
 #include "service.h"
+#include "../core/dashboard_state.h"
 #include <WebServer.h>
 
 
@@ -8,7 +9,7 @@ class WebService : public Service {
 
 public:
 
-    WebService();
+    WebService(DashboardState& state);
 
     void begin() override;
     void update() override;
@@ -16,4 +17,5 @@ public:
 private:
 
     WebServer server;
+    DashboardState dashboardState;
 };

src/tasks/system_task.cpp

@@ -47,14 +47,16 @@ void SystemTask::run()
 {
     serviceManager.begin();
 
-
     TickType_t lastWakeTime =
         xTaskGetTickCount();
 
 
     while(true)
     {
-        serviceManager.update();
+        // Time the length of the task:
+        uint32_t start = micros();
+        serviceManager.tick();
+        uint32_t elapsed = micros() - start;
 
 
         vTaskDelayUntil(