114 lines
3.4 KiB
C++
114 lines
3.4 KiB
C++
//#include <Wire.h>
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//#include <SFE_MicroOLED.h> //Click here to get the library: http://librarymanager/All#SparkFun_Micro_OLED
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#include <SparkFun_Qwiic_OLED.h> // http://librarymanager/All#SparkFun_Qwiic_OLED
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#include "EspMQTTClient.h" // http://librarymanager/All#EspMQTTClient https://github.com/plapointe6/EspMQTTClient
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EspMQTTClient client(
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"Your WiFi SSID",
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"Your WiFi Password",
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"192.168.1.100", // homeassistant mqtt
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"espmqtt", // Can be omitted if not needed
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"Your MQTT Password", // Can be omitted if not needed
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"espmqtt" // Client name that uniquely identify your device
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);
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#define reportingInterval 10000 // how often to sample/publish, in milliseconds
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#define PIN_RESET 4
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#define LED_BUILTIN 0 // ESP32
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//#define LED_BUILTIN 13 // Teensy
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//MicroOLED oled(PIN_RESET); // The TwoWire I2C port is passed to .begin instead
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QwiicMicroOLED oled;
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//int plant1Pin = A0; // Teensy
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int plantPin[] = {35,34,39,38}; // ESP32
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int maxSensorValue = 4095; // ESP32
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// Qwiic Pro Mini pins
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int pin_SDA = 15;
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int pin_SCL = 5;
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unsigned long last_run = 0;
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void onConnectionEstablished() {
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client.publish("esp/status", "{\"status\": \"connected\"}");
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}
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// the setup function runs once when you press reset or power the board
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void setup() {
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Serial.begin(115200);
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Serial.println("Running MultiSoilMoistureSensor on: ");
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pinMode(LED_BUILTIN, OUTPUT);
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// esp32 doesn't have analog pullups
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// for(int i=0;i<(sizeof(plantPin)/sizeof(plantPin[0]));i++){
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// pinMode(plantPin[i],INPUT_PULLUP);
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// }
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Serial.begin(115200);
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// Wire.begin(); // Teensy
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// oled.begin(0x3D, Wire);
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Wire.begin(pin_SDA, pin_SCL); //Qwiic Pro Mini
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if (!oled.begin()){
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Serial.println("Failed to initialize OLED");
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}
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delay(1000); // Delay 1000 ms
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}
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// 0-based index read
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// returns false for no water
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bool readAndPublishSensor(int i) {
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int n = i+1; // plant number
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// maxSensorValue (1023,4095) is bad, 1 is good, 0 is no connection
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int sensorValue = analogRead(plantPin[i]);
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// invert the values so 1.0 is good and 0.01 or value==0 is bad
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int sensorPercent = round(100.0*(maxSensorValue-sensorValue)/maxSensorValue);
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if (sensorValue == 0) {
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sensorPercent = 0;
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}
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char sensorText[32];
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snprintf(sensorText, 31, "%d", sensorPercent); // send MQTT 0 thru 100
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char topic[32];
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snprintf(topic, 31, "esp/plants/%d", n); // 1-based plant number
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client.publish(topic, sensorText);
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Serial.print(topic);
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Serial.print(": ");
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Serial.print(sensorValue);
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Serial.print(" - ");
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Serial.println(sensorText);
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// show on LED with 1-based plant number and 0-100%
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snprintf(sensorText, 31, "%d: %d%%", n, sensorPercent);
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oled.text(0, n*8, sensorText);
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return sensorPercent > 50; // over 50% is true/good, under 50% is false/bad
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}
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// the loop function runs over and over again forever
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void loop() {
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unsigned long time_trigger = millis();
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if (last_run == 0 || time_trigger-last_run > reportingInterval) {
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oled.erase();
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oled.text(0, 0, "Water:");
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bool showLed = false;
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// read + output plant sensors
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for(int i=0;i<(sizeof(plantPin)/sizeof(plantPin[0]));i++){
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if (!readAndPublishSensor(i)) {
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showLed = true;
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};
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}
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if (showLed) {
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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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}
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oled.display();
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last_run = time_trigger;
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}
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client.loop();
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sleep(1);
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}
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