mirror of https://github.com/arendst/Tasmota.git
160 lines
3.6 KiB
C++
160 lines
3.6 KiB
C++
/*
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* This is an example showing a simple environment sensor based on a BME280 attached via I2C.
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* This sketch was tested on a WeMos D1 mini
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*/
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#include <Adafruit_BME280.h>
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#include <esp-knx-ip.h>
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// WiFi config here
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const char* ssid = "myssid";
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const char* pass = "mypassword";
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#define LED_PIN D4
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#define UPDATE_INTERVAL 10000
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unsigned long next_change = 0;
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float last_temp = 0.0;
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float last_hum = 0.0;
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float last_pres = 0.0;
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config_id_t temp_ga, hum_ga, pres_ga;
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config_id_t hostname_id;
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config_id_t update_rate_id, send_rate_id;
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config_id_t enable_sending_id;
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config_id_t enable_reading_id;
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Adafruit_BME280 bme;
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void setup() {
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pinMode(LED_PIN, OUTPUT);
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Serial.begin(115200);
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hostname_id = knx.config_register_string("Hostname", 20, String("env"));
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enable_sending_id = knx.config_register_bool("Send on update", true);
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update_rate_id = knx.config_register_int("Update rate (ms)", UPDATE_INTERVAL);
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temp_ga = knx.config_register_ga("Temperature", show_periodic_options);
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hum_ga = knx.config_register_ga("Humidity", show_periodic_options);
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pres_ga = knx.config_register_ga("Pressure", show_periodic_options);
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knx.callback_register("Read Temperature", temp_cb);
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knx.callback_register("Read Humidity", hum_cb);
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knx.callback_register("Read Pressure", pres_cb);
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knx.feedback_register_float("Temperature (°C)", &last_temp);
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knx.feedback_register_float("Humidity (%)", &last_hum);
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knx.feedback_register_float("Pressure (hPa)", &last_pres, 0);
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// Load previous config from EEPROM
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knx.load();
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// Init sensor
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if (!bme.begin(0x76)) {
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Serial.println("Could not find a valid BME280 sensor, check wiring!");
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}
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// Init WiFi
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WiFi.hostname(knx.config_get_string(hostname_id));
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WiFi.begin(ssid, pass);
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Serial.println("");
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Serial.print("[Connecting]");
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Serial.print(ssid);
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digitalWrite(LED_PIN, LOW);
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while (WiFi.status() != WL_CONNECTED) {
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digitalWrite(LED_PIN, HIGH);
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delay(250);
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Serial.print(".");
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digitalWrite(LED_PIN, LOW);
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delay(250);
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}
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digitalWrite(LED_PIN, HIGH);
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// Start knx
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knx.start();
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Serial.println();
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Serial.println("Connected to wifi");
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Serial.println(WiFi.localIP());
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}
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void loop() {
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knx.loop();
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unsigned long now = millis();
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if (next_change < now)
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{
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next_change = now + knx.config_get_int(update_rate_id);
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last_temp = bme.readTemperature();
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last_hum = bme.readHumidity();
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last_pres = bme.readPressure()/100.0f;
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Serial.print("T: ");
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Serial.print(last_temp);
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Serial.print("°C H: ");
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Serial.print(last_hum);
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Serial.print("% P: ");
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Serial.print(last_pres);
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Serial.println("hPa");
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if (knx.config_get_bool(enable_sending_id))
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{
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knx.write_2byte_float(knx.config_get_ga(temp_ga), last_temp);
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knx.write_2byte_float(knx.config_get_ga(hum_ga), last_hum);
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knx.write_2byte_float(knx.config_get_ga(pres_ga), last_pres);
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}
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}
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delay(50);
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}
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bool show_periodic_options()
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{
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return knx.config_get_bool(enable_sending_id);
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}
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bool enable_reading_callback()
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{
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return knx.config_get_bool(enable_reading_id);
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}
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void temp_cb(message_t const &msg, void *arg)
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{
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switch (msg.ct)
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{
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case KNX_CT_READ:
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{
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knx.answer_2byte_float(msg.received_on, last_temp);
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break;
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}
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}
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}
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void hum_cb(message_t const &msg, void *arg)
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{
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switch (msg.ct)
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{
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case KNX_CT_READ:
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{
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knx.answer_2byte_float(msg.received_on, last_hum);
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break;
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}
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}
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}
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void pres_cb(message_t const &msg, void *arg)
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{
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switch (msg.ct)
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{
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case KNX_CT_READ:
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{
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knx.answer_2byte_float(msg.received_on, last_pres);
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break;
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}
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}
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}
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