M5 ATOM(ESP32)で温度・湿度・気圧(BME280)をInfluxDBに投げるやつ

main.cpp

#define FASTLED_INTERNAL

#include <Arduino.h>
#include <WiFi.h>
#include <FastLED.h>
#include <Adafruit_BME280.h>
#include <InfluxDbClient.h>

const int NUM_LEDS = 1;
const int LED_PIN = 27;
static CRGB leds[NUM_LEDS];

Adafruit_BME280 bme;
Adafruit_Sensor *bme_temp = bme.getTemperatureSensor();
Adafruit_Sensor *bme_pressure = bme.getPressureSensor();
Adafruit_Sensor *bme_humidity = bme.getHumiditySensor();

InfluxDBClient client(INFLUXDB_URL, INFLUXDB_DB_NAME);
Point sensor("sensor");

void setup() {
  FastLED.addLeds<WS2812, LED_PIN, GRB>(leds, NUM_LEDS);
  FastLED.setBrightness(1);
  leds[0] = CRGB::Black;
  FastLED.show();

  Wire.begin(21, 22);

  bme.begin(0x76, &Wire);
  bme_temp->printSensorDetails();
  bme_pressure->printSensorDetails();
  bme_humidity->printSensorDetails();

  sensor.addTag("location", "hallway");
}

void loop() {
  if (WiFi.status() == WL_CONNECTED) {
    sensors_event_t temp_event, pressure_event, humidity_event;
    bme_temp->getEvent(&temp_event);
    bme_pressure->getEvent(&pressure_event);
    bme_humidity->getEvent(&humidity_event);

    sensor.clearFields();
    sensor.addField("temperature", temp_event.temperature);
    sensor.addField("pressure", pressure_event.pressure);
    sensor.addField("humidity", humidity_event.relative_humidity);
    client.writePoint(sensor);
    delay(20 * 1000);
  } else {
    leds[0] = CRGB::Red;
    FastLED.show();
    WiFi.begin(WIFI_SSID, WIFI_PASS);
    int wifiReconnectCount = 0;
    while (WiFi.status() != WL_CONNECTED) {
      if (wifiReconnectCount >= 200) { ESP.restart(); }
      wifiReconnectCount++;
      delay(100);
    }
    leds[0] = CRGB::Green;
    FastLED.show();
  }
}

platformio.ini

; PlatformIO Project Configuration File
;
;   Build options: build flags, source filter
;   Upload options: custom upload port, speed and extra flags
;   Library options: dependencies, extra library storages
;   Advanced options: extra scripting
;
; Please visit documentation for the other options and examples
; https://docs.platformio.org/page/projectconf.html

[env:m5stick-c]
platform = espressif32
board = m5stick-c
framework = arduino
monitor_speed = 115200
board_build.f_cpu = 80000000L
lib_deps =
	adafruit/Adafruit BME280 Library@^2.1.2
	tobiasschuerg/ESP8266 Influxdb@^3.7.0
	fastled/FastLED@^3.4.0
build_flags =
	-D WIFI_SSID='"${sysenv.WIFI_SSID}"'
	-D WIFI_PASS='"${sysenv.WIFI_PASS}"'
	-D INFLUXDB_URL='"${sysenv.INFLUXDB_URL}"'
	-D INFLUXDB_DB_NAME='"${sysenv.INFLUXDB_DB_NAME}"'

setenv.ps1

$env:WIFI_SSID = "**********"
$env:WIFI_PASS = "**********"
$env:INFLUXDB_URL = "http://192.168.0.81:8086"
$env:INFLUXDB_DB_NAME = "homestats"