introduce config get json API

wiflash_esp32/data/template/configuration.json

@@ -0,0 +1,43 @@
+{
+  "wifi" : {
+    "mode" : "%WIFI_MODE%",
+    "ssid" : "%WIFI_SSID%",
+    "password" : "%WIFI_PASSWORD%"
+  },
+  "network" : {
+    "hostname" : "%HOSTNAME%",
+    "dhcp" : "%DHCP_ENABLE%",
+    "ipv4" : "%IPV4_ADDRESS%",
+    "mask" : "%SUBNET_MASK%",
+    "gateway" : "%GATEWAY_IP%"
+  },
+  "button" : {
+    "enable": "%BUTTON_ENABLE%",
+    "pin" : "%BUTTON_PIN%",
+    "osc" : {
+      "host": "%OSC_HOST%",
+      "port": "%OSC_PORT%",
+      "pressed": {
+        "address": "%OSC_PRESSED_ADDR%",
+        "value": "%OSC_PRESSED_VALUE%"
+      },
+      "released": {
+        "address": "%OSC_RELEASED_ADDR%",
+        "value": "%OSC_RELEASED_VALUE%"
+      }
+    }
+  },
+  "strobe" : {
+    "enable" : "%STROBE_ENABLE%",
+    "pin" : "%STROBE_PIN%",
+    "universe" : "%STROBE_UNIVERSE%",
+    "address" : "%STROBE_ADDRESS%"
+  },
+  "strip" : {
+    "enable" : "%STRIP_ENABLE%",
+    "pin" : "%STRIP_PIN%",
+    "count" : "%STRIP_LED_COUNT%",
+    "universe" : "%STRIP_UNIVERSE%",
+    "address" : "%STRIP_ADDRESS%"
+  }
+}

wiflash_esp32/wiflash_esp32.ino

@@ -112,6 +112,40 @@ void recvPixelData(Universe *universe) {
 }
 
 
+/*
+   Template variables
+*/
+String templateProcessor(const String& var) {
+  // configuration values
+  if (var == "WIFI_MODE") return String(config.mode);
+  if (var == "WIFI_SSID") return config.ssid;
+  if (var == "WIFI_PASSWORD") return config.pwd;
+  if (var == "HOSTNAME") return config.hostname;
+  if (var == "DHCP_ENABLE") return String(config.dhcp);
+  if (var == "IPV4_ADDRESS") return config.ip;
+  if (var == "SUBNET_MASK") return config.subnet;
+  if (var == "GATEWAY_IP") return config.gateway;
+  if (var == "BUTTON_ENABLE") return String(config.button_enable);
+  if (var == "BUTTON_PIN") return String(config.button_pin);
+  if (var == "OSC_HOST") return config.osc_host;
+  if (var == "OSC_PORT") return String(config.osc_port);
+  if (var == "OSC_PRESSED_ADDR") return config.osc_pressed_addr;
+  if (var == "OSC_PRESSED_VALUE") return config.osc_pressed_value;
+  if (var == "OSC_RELEASED_ADDR") return config.osc_released_addr;
+  if (var == "OSC_RELEASED_VALUE") return config.osc_released_value;
+  if (var == "STROBE_ENABLE") return String(config.strobe_enable);
+  if (var == "STROBE_PIN") return String(config.strobe_led_pin);
+  if (var == "STROBE_UNIVERSE") return String(config.strobe_universe);
+  if (var == "STROBE_ADDRESS") return String(config.strobe_address);
+  if (var == "STRIP_ENABLE") return String(config.strip_enable);
+  if (var == "STRIP_PIN") return String(config.strip_data_pin);
+  if (var == "STRIP_LED_COUNT") return String(config.strip_led_count);
+  if (var == "STRIP_UNIVERSE") return String(config.strip_universe);
+  if (var == "STRIP_ADDRESS") return String(config.strip_address);
+
+  return String();
+}
+
 /*
    Change a setting in NVM
 */
@@ -173,6 +207,12 @@ bool loadConfig() {
    Start the async web server
 */
 void startHTTPD() {
+  server.on("/api/config", HTTP_GET, [](AsyncWebServerRequest * request) {
+    AsyncWebServerResponse *response = request->beginResponse(SPIFFS, "/template/configuration.json", "application/json", false, templateProcessor);
+    response->addHeader("Access-Control-Allow-Origin", "*");
+    request->send(response);
+  });
+
   server.on("/api/reboot", HTTP_POST, [](AsyncWebServerRequest * request) {
     request->redirect("/");
     server.end();
@@ -236,7 +276,6 @@ void setup() {
       break;
   }
 
-
   Serial.println("Disabling Bluetooth.");
   btStop();