Add PWM controlled by web

WifiControlSensor/MQTT.h

@@ -11,4 +11,5 @@ int MqttDryPublish(int dry);
 int MqttIPPublish(const String &ip);
 void MqttCheckSubscription();
 void MqttChangeGpioValue(int gpio, int value);
+void MqttChangePWMValue(int gpio, int value);
 bool MqttIsConfigured();

WifiControlSensor/WebServer.ino

@@ -1,6 +1,8 @@
 const int gpioWebConf[] = CONFIG_WEB_CONTROLLED_GPIO;
+const int pwmWebConf[] = CONFIG_CONTROLLED_PWM;
 
 String gpioControlHTML = "";
+String pwmControlHTML = "";
 
 void WebHandleRoot() {
 
@@ -20,7 +22,7 @@ void WebHandleRoot() {
 #ifdef CONFIG_ENABLE_DRY_SENSOR
               "Dryness " + String((dryness*100)/1024) + "%<br/>"
 #endif
-              "</fieldset>" + gpioControlHTML + "<fieldset>"
+              "</fieldset>" + gpioControlHTML + pwmControlHTML + "<fieldset>"
               "<legend>Settings</legend>"
               "<a href=\"/setup\">Enter Setup</a><br/>"
               "<a href=\"/otamode\">Put device in OTA mode</a><br/>"
@@ -120,6 +122,16 @@ void WebHandleGpio() {
   server.send(200, "text/html", "<h1>GPIO" + server.arg("gpio") + " changed to " + server.arg("value") + "</h1>");
 }
 
+void WebHandlePWM() {
+  if (!server.hasArg("gpio") || !server.hasArg("value")) {
+    server.send(500, "text/plain", "Bad arguments\r\n");
+    return;
+  }
+
+  MqttChangePWMValue(server.arg("gpio").toInt(), server.arg("value").toInt());
+  server.send(200, "text/html", "<h1>PWM" + server.arg("gpio") + " changed to " + server.arg("value") + "</h1>");
+}
+
 boolean WebSetIp(IPAddress &addr, const char *id, const char *error) {
   if (server.arg(id) != "" && !addr.fromString(server.arg(id).c_str())) {
     WebSendError(error);
@@ -247,13 +259,35 @@ void WebBuildGpioControl(){
   }
 }
 
+void WebBuildPwmControl(){
+  if (NB_ELEMENTS(pwmWebConf) > 0){
+    pwmControlHTML += "<fieldset>"
+               "<legend>PWM</legend>";
+    for (uint i = 0 ; i < NB_ELEMENTS(pwmWebConf) ; i++) {
+      pwmControlHTML += "PWM " + String(pwmWebConf[i]) + "<br/>";
+      pwmControlHTML += "<input type=\"range\"  min=\"0\" max=\"1023\""
+                        "style=\"background:#eee\""
+                        "onChange=\"setPWM(this.value," + String(pwmWebConf[i]) + ")\" />";
+    }
+    pwmControlHTML += "<script type=\"text/javascript\">"
+                      "function setPWM(newValue, gpio){"
+                      "   var xmlHttp = new XMLHttpRequest();"
+                      "   xmlHttp.open( \"GET\", \"/pwm?gpio=\"+ gpio + \"&value=\" + newValue, true );" // false for synchronous request
+                      "   xmlHttp.send( null );}"
+                      "</script>";
+    pwmControlHTML += "</fieldset>";
+  }
+}
+
 void WebSetupServer(int ) {
   WebBuildGpioControl();
+  WebBuildPwmControl();
 
   server.on("/", WebHandleRoot);
   server.on("/setup", WebHandleSetup);
   server.on("/save", WebHandleSave);
   server.on("/gpio", WebHandleGpio);
+  server.on("/pwm", WebHandlePWM);
   server.on("/otamode", WebHandleOTA);
   server.on("/reboot", WebHandleReboot);
   server.on("/wifiStatus", WebHandleWifiStatus);