Publish guestureenabled on change and state updates

Apparently with brighter LEDs the usable range decreased at the far end.
Also added an improvement on the detection of toggling to be less sensitive. This helps when dimming to not toggle accidentally.

.vscode/settings.json

@@ -33,7 +33,12 @@
         "tuple": "cpp",
         "type_traits": "cpp",
         "utility": "cpp",
-        "typeinfo": "cpp"
+        "typeinfo": "cpp",
+        "complex": "cpp",
+        "cstring": "cpp",
+        "ctime": "cpp",
+        "iomanip": "cpp",
+        "iostream": "cpp"
     },
     "editor.formatOnSave": true,
 }

README.md

@@ -1,8 +1,21 @@
 # Bedside table
-An esp8266 powered **IKEA Tvärfot** with a Neopixel ring and a proximity sensor.
+An esp8266 powered **IKEA Tvärfot** with a Neopixel ring and a proximity sensor. The lamp has the following functionality:
+- Hold your hand still above the lamp for > 1s to toggle ON/OFF.
+- Raise or lower your hand above the lamp to dim it.
+- Set color, brightness and toggle it ON/OFF through mqtt e.g. using Home Assistant.
+- Initial configuration is done over Serial. Configuration can be updated through mqtt later.
+- Color and brightness will be stored in flash every time the lamp is turned off. This way it will retain these settings on powercycle or reboot.
 
 ![](https://external-content.duckduckgo.com/iu/?u=https%3A%2F%2Fwww.ikea.com%2Fbe%2Ffr%2Fimages%2Fproducts%2Ftvaerfot-table-lamp-black-white__0772756_PE756088_S5.JPG%3Ff%3Dxxs&f=1&nofb=1)
 
+## LED strip
+A NeoPixel strip with 7 diods is used for the light and connects to **D8**. This could really be any DIO. For this change the variable ***ledPin*** in ***main.cpp***.
+To power the LED strip connect it to the 5V supply. The power output on the ESP8266 may not be enough if connected to the *raw* pin when powering from the USB port. The recommendation is to power it in parallel to the ESP by e.g. supplying the ESP with power on the raw pin while using the same for powering the LED.
+
+## Distance Sensor
+To measure the distance an IR based sensor from Sharp (2Y0A21) is used. This sensor is connected to the analog input **A0**. This is the only analog input on the ESP8266.
+To power the Sharp sensor connect it to any free 3.3V pin on the ESP.
+
 ## Writing a configuration
 Open a Serial Monitor at baudrate 9600 and paste the following json configuration adapted to your needs.
 Before sending press the on board button "flash" or connect a button to D0. You will now have 10s to send the configuration. The onboard LED will light up as long as the board reads Serial input. If successful the new configuration should be shown in the terminal.
@@ -17,6 +30,7 @@ It is also possible to send the same json configuration on mqtt using topic *lig
    "mqttuser": "mymqtt_user",
    "mqttpass": "7j%!fs#",
    "mqttport": "1883",
+   "guestureEnabled" : "true"
 }
 ```
 
@@ -42,6 +56,15 @@ An identical json package is both sent and received to set and get the status of
 ### Configuration topic
 See *Writing a configuration*. This can also be done using mqtt at topic ***light/bedlamp/relay/0/config***
 
+### Debug topic
+Meant for debugging there is a topic ***light/bedlamp/debug***. This topic will output:
+* The configuration of the lamp at boot
+* Uptime (s) is sent repeatedly at every *state* update (default each 120s)
+* All incoming topics and payloads
+
+### Guesture Enable topic
+Topic to activate or deactivate guestures for controlling the lamp ***light/bedlamp/guestureenabled/set***. Payload **1** or **0**.
+
 ## Home Assistant
 Adjust the name and topics to suite your configuration
 ```
@@ -50,6 +73,9 @@ Adjust the name and topics to suite your configuration
     schema: json
     state_topic: light/bedlamp/relay/0
     command_topic: light/bedlamp/relay/0/set
+    availability_topic: light/bedlamp/status
+    payload_available: 1
+    payload_not_available: 0
     brightness: true
     rgb: true
 ```

include/config.h

@@ -13,6 +13,7 @@ public:
         char mqttUser[10];
         char mqttPass[20];
         int mqttPort;
+        bool gestureEnabled;
         uint8_t brightness;
         std::array<uint8_t, 3> color;
     } Data;
@@ -21,6 +22,10 @@ public:
         OutTopic,
         InTopic,
         ConfigTopic,
+        AvailabilityTopic,
+        DebugTopic,
+        InGuestureEnabled,
+        OutGuestureEnabled,
     };
 
     static Config& Instance();

platformio.ini

@@ -13,9 +13,16 @@ platform = espressif8266
 board = esp12e
 framework = arduino
 
-[env:esp8266 OTA]
+[env:esp8266 OTA Right]
 platform = espressif8266
 board = esp12e
 framework = arduino
 upload_protocol = espota
-upload_port = bedlamp-philip
+upload_port = bedlamp-right
+
+[env:esp8266 OTA Left]
+platform = espressif8266
+board = esp12e
+framework = arduino
+upload_protocol = espota
+upload_port = bedlamp-left

src/config.cpp

@@ -65,7 +65,20 @@ String Config::getMqttTopic(MqttTopic topic)
         return String("light/" + String(data.hostname) + "/relay/0/set");
         break;
     case (MqttTopic::ConfigTopic):
-        return String("light/" + String(data.hostname) + "/relay/0/config");
+        return String("light/" + String(data.hostname) + "/config");
+        break;
+    case (MqttTopic::AvailabilityTopic):
+        return String("light/" + String(data.hostname) + "/status");
+        break;
+    case (MqttTopic::DebugTopic):
+        return String("light/" + String(data.hostname) + "/debug");
+        break;
+    case (MqttTopic::InGuestureEnabled):
+        return String("light/" + String(data.hostname) +
+                      "/guestureenabled/set");
+        break;
+    case (MqttTopic::OutGuestureEnabled):
+        return String("light/" + String(data.hostname) + "/guestureenabled");
         break;
     }
     return {};

src/main.cpp

@@ -22,6 +22,8 @@ const int sensorPin = A0;
 const int ledPin = D8;
 const int ledCount = 7;
 
+const int publishInterval = 120;
+
 Config& config = Config::Instance();
 
 EasyButton button(buttonPin);
@@ -33,7 +35,7 @@ PubSubClient mqttClient(wifiClient);
 
 WebOTA webOTA(82);
 
-Ticker tickerLedStatus, tickerMqttCyclic, tickerMqttReconnect;
+Ticker tickerPublishStatus;
 
 typedef struct {
     float distance; // Distance in mm
@@ -53,6 +55,7 @@ void setConfig(String jsonConfig)
     String mqttUser = obj["mqttuser"];
     String mqttPass = obj["mqttpass"];
     int mqttPort = obj["mqttport"];
+    bool gestureEnabled = obj["gestureEnabled"];
     Serial.printf("Parsed hostname: %s, ssid: %s, pass: %s\n",
                   hostname.c_str(),
                   ssid.c_str(),
@@ -72,6 +75,8 @@ void setConfig(String jsonConfig)
                              sizeof(config.data.mqttPass));
         config.data.mqttPort = mqttPort;
 
+        config.data.gestureEnabled = gestureEnabled;
+
         config.write();
 
         Serial.println("rebooting...");
@@ -79,6 +84,29 @@ void setConfig(String jsonConfig)
     }
 }
 
+String configToString()
+{
+    DynamicJsonDocument doc(1024);
+    auto jsonConfig = doc["config"];
+    jsonConfig["hostname"] = config.data.hostname;
+    jsonConfig["ssid"] = config.data.ssid;
+    jsonConfig["pass"] = config.data.pass;
+    jsonConfig["mqttserver"] = config.data.mqttServer;
+    jsonConfig["mqttuser"] = config.data.mqttUser;
+    jsonConfig["mqttpass"] = config.data.mqttPass;
+    jsonConfig["mqttport"] = config.data.mqttPort;
+    jsonConfig["guestureenabled"] = config.data.gestureEnabled;
+    jsonConfig["brightness"] = config.data.brightness;
+    JsonArray color = jsonConfig.createNestedArray("color");
+    color.add(config.data.color.at(0));
+    color.add(config.data.color.at(1));
+    color.add(config.data.color.at(2));
+
+    String output;
+    serializeJson(doc, output);
+    return output;
+}
+
 void checkSerial()
 {
     String s = Serial.readString();
@@ -97,9 +125,7 @@ void onPressed()
     unsigned long t = millis();
 
     // Stop all tickers
-    tickerLedStatus.detach();
-    tickerMqttCyclic.detach();
-    tickerMqttReconnect.detach();
+    tickerPublishStatus.detach();
 
     while (millis() - t < 10000)
     {
@@ -112,12 +138,25 @@ void onPressed()
 void mqttPublishState()
 {
     if (mqttClient.connected())
+    {
         mqttClient.publish(
             config.getMqttTopic(Config::MqttTopic::OutTopic).c_str(),
             myLed.get().c_str());
+        mqttClient.publish(
+            config.getMqttTopic(Config::MqttTopic::AvailabilityTopic).c_str(),
+            "1");
+        mqttClient.publish(
+            config.getMqttTopic(Config::MqttTopic::OutGuestureEnabled).c_str(),
+            String(config.data.gestureEnabled).c_str());
+
+        auto uptime = millis() / 1000;
+        mqttClient.publish(
+            config.getMqttTopic(Config::MqttTopic::DebugTopic).c_str(),
+            String("{ \"uptime\":" + String(uptime) + "}").c_str());
+    }
 }
 
-void mqttReconnect()
+void mqttConnect()
 {
     if (!mqttClient.connected())
     {
@@ -132,31 +171,43 @@ void mqttReconnect()
                 config.getMqttTopic(Config::MqttTopic::InTopic).c_str());
             mqttClient.subscribe(
                 config.getMqttTopic(Config::MqttTopic::ConfigTopic).c_str());
+            mqttClient.subscribe(
+                config.getMqttTopic(Config::MqttTopic::InGuestureEnabled)
+                    .c_str());
         } else
         {
-            Serial.print("failed, rc=");
-            Serial.print(mqttClient.state());
-            Serial.println(" try again in 5 seconds");
-
-            tickerMqttReconnect.once(5, mqttReconnect);
+            Serial.printf("failed, rc=%d\n", mqttClient.state());
         }
     }
 }
 
 void mqttCallback(char* topic, byte* payload, unsigned int length)
 {
-    String msg(reinterpret_cast<char const*>(payload));
+    const String sTopic(topic);
+    String msg;
+    msg.concat(reinterpret_cast<char*>(payload), length);
     Serial.printf("Message arrived [%s] \n", topic);
     Serial.println(msg.c_str());
 
-    if (String(topic) == config.getMqttTopic(Config::InTopic))
+    if (sTopic == config.getMqttTopic(Config::InTopic))
     {
         myLed.set(msg);
         mqttPublishState();
-    } else if (String(topic) == config.getMqttTopic(Config::ConfigTopic))
+    } else if (sTopic == config.getMqttTopic(Config::ConfigTopic))
     {
         setConfig(msg);
+    } else if (sTopic == config.getMqttTopic(Config::InGuestureEnabled))
+    {
+        config.data.gestureEnabled = (msg == "1");
+        config.write();
+        mqttClient.publish(
+            config.getMqttTopic(Config::MqttTopic::OutGuestureEnabled).c_str(),
+            String(config.data.gestureEnabled).c_str());
     }
+
+    mqttClient.publish(
+        config.getMqttTopic(Config::MqttTopic::DebugTopic).c_str(),
+        String("{\"received\": { \"" + sTopic + "\": " + msg + " } }").c_str());
 }
 
 void offCallback()
@@ -189,6 +240,7 @@ void setup()
     config.load();
     myLed.setState(
         MyLed::State({config.data.color, config.data.brightness, true}));
+    WiFi.setAutoReconnect(true);
     WiFi.begin(config.data.ssid, config.data.pass);
     WiFi.hostname(config.data.hostname);
     Serial.print("Connecting");
@@ -210,9 +262,12 @@ void setup()
     ArduinoOTA.setHostname(config.data.hostname);
     ArduinoOTA.begin();
 
-    tickerLedStatus.attach(120, mqttPublishState);
-    tickerMqttCyclic.attach(60 * 5, mqttReconnect);
-    mqttReconnect();
+    tickerPublishStatus.attach(publishInterval, mqttPublishState);
+    mqttConnect();
+
+    mqttClient.publish(
+        config.getMqttTopic(Config::MqttTopic::DebugTopic).c_str(),
+        configToString().c_str());
 
     webOTA.setup(&WiFi);
 }
@@ -234,7 +289,7 @@ SensorData getDist()
     // https://global.sharp/products/device/lineup/data/pdf/datasheet/gp2y0a21yk_e.pdf
     const int maxVal = 780; // 60  mm
     const int minVal = 173; // 800 mm
-    const int maxValidDist = 610;
+    const int maxValidDist = 480;
     const int minValidDist = 70;
 
     long dist = map(analogRead(sensorPin), maxVal, minVal, 60, 800);
@@ -244,7 +299,7 @@ SensorData getDist()
     float normalizedDistance =
         (static_cast<float>(dist) - static_cast<float>(minValidDist)) /
         static_cast<float>(maxValidDist - minValidDist);
-    // Serial.printf("Norm dist: %f\n", normalizedDistance);
+    // Serial.printf("Dist: %d, normalized: %f\n", dist, normalizedDistance);
 
     return {.distance = static_cast<float>(dist),
             .distanceNormalized = normalizedDistance,
@@ -261,7 +316,7 @@ void evalDist(SensorData data)
 
     static float lastDist = data.distance;
 
-    const float stillThreshold = 20.0f; // Distance in mm
+    const float stillThreshold = 15.0f; // Distance in mm
     const float releaseThreshold =
         70.0f; // If value increases more than this it is considered a release
 
@@ -326,19 +381,17 @@ void evalDist(SensorData data)
 
 void slowLoop()
 {
-    if (WiFi.status() != WL_CONNECTED)
+    if (config.data.gestureEnabled)
     {
-        Serial.println("WiFi connection lost. Trying to reconnect...");
-        WiFi.reconnect();
+        SensorData data = getDist();
+        evalDist(data);
     }
 
-    SensorData data = getDist();
-
-    evalDist(data);
-
     myLed.run();
 
-    mqttClient.loop();
+    if (!mqttClient.loop())
+        mqttConnect();
+
     webOTA.run();
 }
 

src/myled.cpp

@@ -2,8 +2,10 @@
 
 #include <ArduinoJson.h>
 
+#include <limits>
+
 namespace {
-const float minBrightness = 0.2;
+const float minBrightness = 0.05;
 }
 
 MyLed::MyLed(int ledPin, int ledCount, bool effects)
@@ -56,7 +58,7 @@ void MyLed::toggle()
 
 void MyLed::set(String jsonState)
 {
-    DynamicJsonDocument doc(1024);
+    DynamicJsonDocument doc(2048);
     deserializeJson(doc, jsonState);
     JsonObject obj = doc.as<JsonObject>();
     Serial.println(jsonState.c_str());
@@ -107,7 +109,7 @@ MyLed::State MyLed::getState()
 
 void MyLed::setBrightness(float brightness)
 {
-    brightness = max(minBrightness, brightness);
+    brightness = min(max(minBrightness, brightness), 1.0f);
 
     if (_useEffects)
     {
@@ -151,8 +153,13 @@ void MyLed::registerOffCallback(CallbackFunc callback)
 
 void MyLed::apply()
 {
-    _strip.fill(_strip.Color(static_cast<uint8_t>(_color.at(0) * _brightness),
-                             static_cast<uint8_t>(_color.at(1) * _brightness),
-                             static_cast<uint8_t>(_color.at(2) * _brightness)));
+    uint8_t a = 254;
+    _strip.fill(
+        _strip.Color(min(static_cast<uint8_t>(_color.at(0) * _brightness),
+                         std::numeric_limits<uint8_t>::max()),
+                     min(static_cast<uint8_t>(_color.at(1) * _brightness),
+                         std::numeric_limits<uint8_t>::max()),
+                     min(static_cast<uint8_t>(_color.at(2) * _brightness),
+                         std::numeric_limits<uint8_t>::max())));
     _strip.show();
 }