Merge pull request #2 from soylentOrange/adjust-wifi-tx-power

Make wifi tx power adjustable
soylentOrange · Oct 6, 2024 · ec6e4df · ec6e4df
2 parents 9e8f180 + 63e2625
commit ec6e4df
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Showing 4 changed files with 88 additions and 2 deletions.
diff --git a/include/config.h b/include/config.h
@@ -16,6 +16,8 @@
             int8_t _modbusRtsPin;
             unsigned long _serialBaudRate;
             uint32_t _serialConfig;
+            int8_t _WiFiTXPower;
+            String _hostname;
         public:
             Config();
             void begin(Preferences *prefs);
@@ -43,6 +45,10 @@
             void setSerialParity(uint8_t value);
             uint8_t getSerialStopBits();
             void setSerialStopBits(uint8_t value);
+            int8_t getWiFiTXPower();
+            void setWiFiTXPower(int8_t value);
+            String getHostname();
+            void setHostname(String value);
     };
     #ifdef DEBUG
     #define dbg(x...) debugSerial.print(x);

diff --git a/src/config.cpp b/src/config.cpp
@@ -9,6 +9,8 @@ Config::Config()
     ,_modbusRtsPin(-1)
     ,_serialBaudRate(115200)
     ,_serialConfig(SERIAL_8N1)
+    ,_WiFiTXPower(60)
+    ,_hostname("na")
 {}
 
 void Config::begin(Preferences *prefs)
@@ -21,6 +23,8 @@ void Config::begin(Preferences *prefs)
     _modbusRtsPin = _prefs->getChar("modbusRtsPin", _modbusRtsPin);
     _serialBaudRate = _prefs->getULong("serialBaudRate", _serialBaudRate);
     _serialConfig = _prefs->getULong("serialConfig", _serialConfig);
+    _WiFiTXPower = _prefs->getChar("txPower", _WiFiTXPower); 
+    _hostname = _prefs->getString("hostname", _hostname);
 }
 
 uint16_t Config::getTcpPort(){
@@ -153,4 +157,23 @@ void Config::setSerialStopBits(uint8_t value){
     if (stopbits == value) return;
     _serialConfig = (_serialConfig & 0xffffffcf) | value;
     _prefs->putULong("serialConfig", _serialConfig);
+}
+String Config::getHostname(){
+    return _hostname;
+}
+
+void Config::setHostname(String value){
+     if (_hostname == value) return;
+    _hostname = value;
+    _prefs->putString("hostname", _hostname);
+}
+
+int8_t Config::getWiFiTXPower(){
+    return _WiFiTXPower;
+}
+
+void Config::setWiFiTXPower(int8_t value){
+     if (_WiFiTXPower == value) return;
+    _WiFiTXPower = value;
+    _prefs->putChar("txPower", _WiFiTXPower);
 }
diff --git a/src/main.cpp b/src/main.cpp
@@ -26,7 +26,17 @@ void setup() {
   debugSerial.end();
   debugSerial.begin(config.getSerialBaudRate(), config.getSerialConfig());
   dbgln("[wifi] start");
+  // Set Hostname
+  if(config.getHostname().length() > 2) {
+    WiFi.setHostname(config.getHostname().c_str());
+  }
+  // Enable auto-reconnect
+  wm.setWiFiAutoReconnect(true);
+  // Set WiFi to station mode
   WiFi.mode(WIFI_STA);
+  // Set (reduced) WiFi TX Power
+  dbgln(String("[WiFi] TxPower: ") + ((float)config.getWiFiTXPower()) / 4 + "dBm")
+  WiFi.setTxPower((wifi_power_t) config.getWiFiTXPower()); 
   wm.setClass("invert");
   auto reboot = false;
   wm.setAPCallback([&reboot](WiFiManager *wifiManager){reboot = true;});

diff --git a/src/pages.cpp b/src/pages.cpp
@@ -22,6 +22,8 @@ void setupPages(AsyncWebServer *server, ModbusClientRTU *rtu, ModbusBridgeWiFi *
     response->print("<table>");
 
     // show ESP infos...
+    sendTableRow(response, "WiFi TX Power (dBm)", String(((float)WiFi.getTxPower())/4, 2));
+    sendTableRow(response, "ESP Temperature (C)", String(temperatureRead(), 2));
     sendTableRow(response, "ESP Uptime (sec)", esp_timer_get_time() / 1000000);
     sendTableRow(response, "ESP SSID", WiFi.SSID());
     sendTableRow(response, "ESP RSSI", WiFi.RSSI());
@@ -63,9 +65,40 @@ void setupPages(AsyncWebServer *server, ModbusClientRTU *rtu, ModbusBridgeWiFi *
   server->on("/config", HTTP_GET, [config](AsyncWebServerRequest *request){
     dbgln("[webserver] GET /config");
     auto *response = request->beginResponseStream("text/html");
-    sendResponseHeader(response, "Modbus TCP");
+    sendResponseHeader(response, "Wifi Settings");
     response->print("<form method=\"post\">");
     response->print("<table>"
+      "<tr>"
+        "<td>"
+          "<label for=\"hn\">Hostname</label>"
+        "</td>"
+        "<td>");
+    response->printf("<input type=\"text\" minlength=\"2\" maxlength=\"63\" id=\"hn\" name=\"hn\" value=\"%s\">", config->getHostname().length() > 2 ? config->getHostname().c_str() : WiFi.getHostname());
+    response->print("</tr>"
+    "</tr>"
+      "<tr>"
+        "<td>"
+          "<label for=\"tx\">TX Power</label>"
+        "</td>"
+        "<td>");
+    response->printf("<select id=\"tx\" name=\"tx\" data-value=\"%d\">", config->getWiFiTXPower());
+    response->print("<option value=\"78\">19.5dBm</option>"
+                    "<option value=\"76\">19dBm</option>"
+                    "<option value=\"74\">18.5dBm</option>"
+                    "<option value=\"68\">17dBm</option>"
+                    "<option value=\"60\">15dBm</option>"
+                    "<option value=\"52\">13dBm</option>"
+                    "<option value=\"44\">11dBm</option>"
+                    "<option value=\"34\">8.5dBm</option>"
+                    "<option value=\"28\">7dBm</option>"
+                    "<option value=\"20\">5dBm</option>"
+                    "<option value=\"8\">2dBm</option>"
+        "</select>"
+      "</td>"
+    "</tr>"
+    "</table>"
+    "<h3>Modbus TCP</h3>"
+    "<table>"
       "<tr>"
         "<td>"
           "<label for=\"tp\">TCP Port</label>"
@@ -191,7 +224,8 @@ void setupPages(AsyncWebServer *server, ModbusClientRTU *rtu, ModbusBridgeWiFi *
             "</select>"
           "</td>"
         "</tr>"
-        "</table>");
+        "<tr><td>&nbsp;</td><td></td></tr>"
+        "</table>");   
     response->print("<button class=\"r\">Save</button>"
       "</form>"
       "<p></p>");
@@ -263,6 +297,19 @@ void setupPages(AsyncWebServer *server, ModbusClientRTU *rtu, ModbusBridgeWiFi *
       config->setSerialStopBits(stop);
       dbg("[webserver] saved serial stop bits: "); dbgln(stop);
     }
+    if (request->hasParam("hn", true)){
+      auto hostname = request->getParam("hn", true)->value();
+      config->setHostname(hostname);
+      dbg("[webserver] saved hostname: ");
+      dbgln(config->getHostname());
+    }
+    if (request->hasParam("tx", true)){
+      auto txPower = request->getParam("tx", true)->value().toInt();
+      config->setWiFiTXPower((int8_t)txPower);
+      dbg("[webserver] saved TX Power: ");
+      dbg(((float)config->getWiFiTXPower())/4);
+      dbgln("dBm");
+    }
     request->redirect("/");    
   });
   server->on("/debug", HTTP_GET, [](AsyncWebServerRequest *request){