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@ -18,15 +18,16 @@
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#define WIFI_SSID "" |
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#define WIFI_PASSWORD "" |
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#define WIFI_RECONNECT_DELAY 10000 // Reconnection delay in milliseconds
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// TODO: Configure your node here
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#define NODE_ID 0 |
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#define NODE_ID 1 |
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#define NODE_NAME "outdoors" |
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// TODO: Set your MQTT server
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#define MQTT_REMOTE "192.168.1.1" |
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#define MQTT_REMOTE "192.168.0.1" |
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#define MQTT_PORT 1883 |
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#define MQTT_CLIENTID "meteo-" NODE_NAME |
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@ -44,10 +45,7 @@ WebServer server(80);
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static float temp(0), hum(0), pres(0); |
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static void led_toggle(const bool is_on) { |
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if (is_on) |
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digitalWrite(LED_BUILTIN, HIGH); |
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else |
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digitalWrite(LED_BUILTIN, LOW); |
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digitalWrite(LED_BUILTIN, is_on?HIGH:LOW); |
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} |
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@ -56,7 +54,7 @@ void setup() {
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while(!Serial) {} // Wait for serial port
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// initialize digital pin LED_BUILTIN as an output.
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pinMode(LED_BUILTIN, OUTPUT);
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pinMode(LED_BUILTIN, OUTPUT); |
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led_toggle(false); |
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// Init BME280
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@ -91,8 +89,9 @@ void setup() {
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Serial.println("ERR: Wifi"); |
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delay(5000); |
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continue; |
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} else |
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} else { |
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break; |
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} |
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} |
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Serial.print("Wifi OK "); Serial.println(WiFi.localIP()); |
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client.setServer(MQTT_REMOTE, MQTT_PORT); |
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@ -132,7 +131,7 @@ void report(float temp, float hum, float pres) {
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void www_handle() { |
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char html[512]; |
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snprintf(html, 512, "<!DOCTYPE html>\n<html>\n<body><h1>ESP32 Meteo Node</h1>\n<table><tr><td>Node</td><td>%d <b>%s</b></td></tr> <tr><td>Temperature</td><td>%.2f deg C</td><tr><td>Humidity</td><td>%.2f %% rel</td><tr><td>Pressure</td><td>%.2f hPa</td> </tr> </table>\n<p>Readings: <a href=\"/csv\">[csv]</a> <a href=\"/json\">[json]</a></p></body></html>", NODE_ID, NODE_NAME, temp, hum, pres); |
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snprintf(html, 512, "<!DOCTYPE html>\n<html>\n<body><h1>ESP32 Meteo Node</h1>\n<table><tr><td>Node</td><td>%d <b>%s</b></td></tr> <tr><td>Temperature</td><td>%.2f deg C</td></tr> <tr><td>Humidity</td><td>%.2f %% rel</td></tr> <tr><td>Pressure</td><td>%.2f hPa</td></tr> <tr><td>Pressure</td><td>%.2f hPa</td></tr> </table>\n<p>Readings: <a href=\"/csv\">[csv]</a> <a href=\"/json\">[json]</a></p></body></html>", NODE_ID, NODE_NAME, temp, hum, pres); |
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server.send(200, "text/html", html); |
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} |
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@ -148,13 +147,36 @@ void json_handle() {
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server.send(200, "text/json", json); |
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} |
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void wifi_reconnect() { |
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Serial.print("Wifi reconnect ... "); |
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WiFi.disconnect(); |
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WiFi.reconnect(); |
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// XXX: Test if this is somehow behaving weird
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if (WiFi.waitForConnectResult() != WL_CONNECTED) { |
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Serial.println("failed"); |
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} else { |
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Serial.println("ok"); |
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} |
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} |
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void loop() { |
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// wifi reconnect, if required
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if (WiFi.status() != WL_CONNECTED) { |
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// But don't spam reconnections
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static unsigned long previousMillis = 0; |
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const unsigned long currentMillis = millis(); |
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if (currentMillis - previousMillis >= WIFI_RECONNECT_DELAY) { |
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wifi_reconnect(); |
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previousMillis = currentMillis; |
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} |
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} |
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// mqtt reconnect
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if (!client.connected()) { reconnect_mqtt(); } |
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client.loop(); |
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server.handleClient(); |
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// Sensor readout
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const long timestamp = millis(); |
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static long next_sample = timestamp + SAMPLE_DELAY; |
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if(timestamp > next_sample) { |
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@ -176,4 +198,3 @@ void loop() {
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} |
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delay(100); |
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} |
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