Issue #69. Allow temperatures to be reported in Fahrenheit degrees

code/espurna/config/general.h

@@ -62,6 +62,14 @@
 // 0 means no pulses, 1 means normally off, 2 normally on
 #define RELAY_PULSE_MODE     	RELAY_PULSE_NONE
 
+//--------------------------------------------------------------------------------
+// I18N
+//--------------------------------------------------------------------------------
+
+#define TMP_CELSIUS             0
+#define TMP_FAHRENHEIT          1
+#define TMP_UNITS               TMP_CELSIUS
+
 //--------------------------------------------------------------------------------
 // LED
 //--------------------------------------------------------------------------------

code/espurna/dht.ino

@@ -45,9 +45,11 @@ void dhtLoop() {
     if ((millis() - last_update > DHT_UPDATE_INTERVAL) || (last_update == 0)) {
         last_update = millis();
 
+        unsigned char tmpUnits = getSetting("tmpUnits", TMP_UNITS).toInt();
+
         // Read sensor data
         double h = dht.readHumidity();
-        double t = dht.readTemperature();
+        double t = dht.readTemperature(tmpUnits == TMP_FAHRENHEIT);
 
         // Check if readings are valid
         if (isnan(h) || isnan(t)) {
@@ -64,7 +66,7 @@ void dhtLoop() {
             dtostrf(t, 4, 1, temperature);
             itoa((unsigned int) h, humidity, 10);
 
-            DEBUG_MSG("[DHT] Temperature: %s\n", temperature);
+            DEBUG_MSG("[DHT] Temperature: %s%s\n", temperature, (tmpUnits == TMP_CELSIUS) ? "ºC" : "ºF");
             DEBUG_MSG("[DHT] Humidity: %s\n", humidity);
 
             // Send MQTT messages
@@ -93,7 +95,7 @@ void dhtLoop() {
 
             // Update websocket clients
             char buffer[100];
-            sprintf_P(buffer, PSTR("{\"dhtVisible\": 1, \"dhtTmp\": %s, \"dhtHum\": %s}"), temperature, humidity);
+            sprintf_P(buffer, PSTR("{\"dhtVisible\": 1, \"dhtTmp\": %s, \"dhtHum\": %s, \"tmpUnits\": %d}"), temperature, humidity, tmpUnits);
             wsSend(buffer);
 
         }

code/espurna/ds18b20.ino

@@ -40,9 +40,11 @@ void dsLoop() {
     if ((millis() - last_update > DS_UPDATE_INTERVAL) || (last_update == 0)) {
         last_update = millis();
 
+        unsigned char tmpUnits = getSetting("tmpUnits", TMP_UNITS).toInt();
+
         // Read sensor data
         ds18b20.requestTemperatures();
-        double t = ds18b20.getTempCByIndex(0);
+        double t = (tmpUnits == TMP_CELSIUS) ? ds18b20.getTempCByIndex(0) : ds18b20.getTempFByIndex(0);
 
         // Check if readings are valid
         if (isnan(t)) {
@@ -55,7 +57,7 @@ void dsLoop() {
 
             char temperature[6];
             dtostrf(t, 5, 1, temperature);
-            DEBUG_MSG("[DS18B20] Temperature: %s\n", temperature);
+            DEBUG_MSG("[DS18B20] Temperature: %s%s\n", temperature, (tmpUnits == TMP_CELSIUS) ? "ºC" : "ºF");
 
             // Send MQTT messages
             mqttSend(getSetting("dsTmpTopic", DS_TEMPERATURE_TOPIC).c_str(), temperature);
@@ -67,7 +69,7 @@ void dsLoop() {
 
             // Update websocket clients
             char buffer[100];
-            sprintf_P(buffer, PSTR("{\"dsVisible\": 1, \"dsTmp\": %s}"), temperature);
+            sprintf_P(buffer, PSTR("{\"dsVisible\": 1, \"dsTmp\": %s, \"tmpUnits\": %d}"), temperature, tmpUnits);
             wsSend(buffer);
 
         }

code/espurna/web.ino

@@ -273,11 +273,6 @@ void _wsParse(uint32_t client_id, uint8_t * payload, size_t length) {
                 setCurrentRatio(getSetting("emonRatio").toFloat());
             #endif
 
-            #if LED_PULSE
-                byte relayPulseMode = getSetting("relayPulseMode", String(RELAY_PULSE_MODE)).toInt();
-                digitalWrite(LED_PULSE, relayPulseMode != RELAY_PULSE_NONE);
-            #endif
-
             // Check if we should reconfigure MQTT connection
             if (changedMQTT) {
                 mqttDisconnect();
@@ -339,6 +334,8 @@ void _wsStart(uint32_t client_id) {
     root["apiEnabled"] = getSetting("apiEnabled").toInt() == 1;
     root["apiKey"] = getSetting("apiKey");
 
+    root["tmpUnits"] = getSetting("tmpUnits", TMP_UNITS).toInt();
+
     #if ENABLE_DOMOTICZ
 
         root["dczVisible"] = 1;

code/html/custom.js

@@ -297,6 +297,9 @@ function processData(data) {
         if (key == "mqttStatus") {
             data.mqttStatus = data.mqttStatus ? "CONNECTED" : "NOT CONNECTED";
         }
+        if (key == "tmpUnits") {
+            $("span#tmpUnit").html(data[key] == 1 ? "ºF" : "ºC");
+        }
 
         // Look for INPUTs
         var element = $("input[name=" + key + "]");
@@ -305,6 +308,8 @@ function processData(data) {
                 element
                     .prop("checked", data[key])
                     .iphoneStyle("refresh");
+            } else if (element.attr('type') == 'radio') {
+                element.val([data[key]]);
             } else {
                 element.val(data[key]);
             }
@@ -342,6 +347,7 @@ function connect(host, port) {
     if (typeof port === 'undefined') {
         port = location.port;
     }
+    if (websock) websock.close();
     websock = new WebSocket('ws://' + host + ':' + port + '/ws');
     websock.onopen = function(evt) {
         console.log("Connected");

code/html/index.html

@@ -121,12 +121,12 @@
                                 </div>
 
                                 <div class="pure-g module module-ds">
-                                    <label class="pure-u-1 pure-u-sm-1-4" for="dsTmp">Temperature (ºC)</label>
+                                    <label class="pure-u-1 pure-u-sm-1-4" for="dsTmp">Temperature (<span id="tmpUnit"></span>)</label>
                                     <input class="pure-u-1 pure-u-sm-3-4" type="text" name="dsTmp" readonly />
                                 </div>
 
                                 <div class="pure-g module module-dht">
-                                    <label class="pure-u-1 pure-u-sm-1-4" for="dhtTmp">Temperature (ºC)</label>
+                                    <label class="pure-u-1 pure-u-sm-1-4" for="dhtTmp">Temperature (<span id="tmpUnit"></span>)</label>
                                     <input class="pure-u-1 pure-u-sm-3-4" type="text" name="dhtTmp" readonly />
                                 </div>
 
@@ -247,6 +247,12 @@
                                     <div class="pure-u-1 pure-u-sm-1-4"><input type="checkbox" name="fauxmoEnabled" tabindex="6" /></div>
                                 </div>
 
+                                <div class="pure-g module module-ds module-dht">
+                                    <div class="pure-u-1 pure-u-sm-1-4"><label for="tmpUnits">Temperature units</label></div>
+                                    <div class="pure-u-1 pure-u-sm-1-4"><input type="radio" name="tmpUnits" tabindex="7" value="0"> Celsius (ºC)</input></div>
+                                    <div class="pure-u-1 pure-u-sm-1-4"><input type="radio" name="tmpUnits" tabindex="8" value="1"> Fahrenheit (ºF)</input></div>
+                                </div>
+
                             </fieldset>
                         </div>
                     </div>