PakMan project done during the last few hours of the MakeZurich hackathon using a Teensy 3.6, a HC05 BT module and interfacing a FMLR LoRa button from MiroMico emulating button presses

pakman-code.ino

#include <Arduino.h>
#include <ArduinoJson.h>
#include <EEPROM.h>
#include <Snooze.h>
#include <Wire.h>
#include <sensirion_ess.h>
#define INTERVAL 1000
#define PIN_BT_EN 2
#define PIN_ISR 7
#define PIN_LORA 8
SensirionESS ess;
SnoozeDigital digital;
SnoozeTimer timer;
SnoozeBlock config(digital, timer);
void setup() {
  Serial.begin(115200);
  Serial.setTimeout(1000);
  Serial1.begin(9600);
  Serial2.begin(9600);
  Serial2.setTimeout(1000);
  pinMode(PIN_BT_EN, OUTPUT);
  digitalWrite(PIN_BT_EN, HIGH);
  pinMode(PIN_LORA, OUTPUT);
  timer.setTimer(INTERVAL);
  digital.pinMode(PIN_ISR, INPUT_PULLUP, FALLING);
  // digital.pinMode(BT_ISR_PIN, INPUT_PULLUP, FALLING);
  delay(1000);
  Serial.print("Welcome to pakman\r\n");
  ess.initSensors();
  Serial.print(ess.getError());
  Serial.println();
}
void loop() {
  measure();
  bt_loop();
  Serial2.flush();
}
void measure() {
  float temp, humidity, tvoc;
  ess.measureIAQ();
  ess.measureRHT();
  temp = ess.getTemperature();
  humidity = ess.getHumidity();
  tvoc = ess.getTVOC();
  Serial.print(temp);
  Serial.print(" ");
  Serial.print(humidity);
  Serial.print(" ");
  Serial.println(tvoc);
  Serial2.println(tvoc);
  if (humidity > 65.0f) {
    lora(5000);
  } else if (humidity > 45.0f) {
    lora(200);
  }
}
void lora(uint32_t d) {
  digitalWrite(PIN_LORA, LOW);
  delay(d);
  digitalWrite(PIN_LORA, HIGH);
  delay(10000);
}
void bt_loop() {
  uint32_t start_time = millis();
  for (;;) {
    StaticJsonBuffer<512> jsonBuffer;
    char buffer[128];
    int len = Serial2.readBytesUntil('\n', buffer, sizeof(buffer));
    if (len == 0) {
      Serial2.readBytesUntil('\n', buffer, sizeof(buffer));
    }
    JsonObject &object = jsonBuffer.parseObject(buffer);
    if (!object.success()) {
      // Serial2.printf("waiting for json\r\n");
      return;
    }
    const char *cmd = object["command"];
    Serial2.println(cmd);
    if (strcmp(cmd, "lora") == 0) {
      lora(200);
    }
    if (millis() - start_time > INTERVAL) {
      break;
    }
  }
}