113 lines
No EOL
3.8 KiB
C++
113 lines
No EOL
3.8 KiB
C++
/**
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* Secure Write Example code for InfluxDBClient library for Arduino
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* Enter WiFi and InfluxDB parameters below
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*
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* Demonstrates connection to any InfluxDB instance accesible via:
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* - unsecured http://...
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* - secure https://... (appropriate certificate is required)
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* - InfluxDB 2 Cloud at https://cloud2.influxdata.com/ (certificate is preconfigured)
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* Measures signal level of the actually connected WiFi network
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* This example demonstrates time handling, secure connection and measurement writing into InfluxDB
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* Data can be immediately seen in a InfluxDB 2 Cloud UI - measurement wifi_status
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**/
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#if defined(ESP32)
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#include <WiFiMulti.h>
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WiFiMulti wifiMulti;
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#define DEVICE "ESP32"
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#elif defined(ESP8266)
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#include <ESP8266WiFiMulti.h>
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ESP8266WiFiMulti wifiMulti;
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#define DEVICE "ESP8266"
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#endif
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#include <InfluxDbClient.h>
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#include <InfluxDbCloud.h>
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// WiFi AP SSID
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#define WIFI_SSID "SSID"
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// WiFi password
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#define WIFI_PASSWORD "PASSWORD"
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// InfluxDB v2 server url, e.g. https://eu-central-1-1.aws.cloud2.influxdata.com (Use: InfluxDB UI -> Load Data -> Client Libraries)
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#define INFLUXDB_URL "server-url"
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// InfluxDB v2 server or cloud API authentication token (Use: InfluxDB UI -> Load Data -> Tokens -> <select token>)
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#define INFLUXDB_TOKEN "server token"
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// InfluxDB v2 organization id (Use: InfluxDB UI -> Settings -> Profile -> <name under tile> )
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#define INFLUXDB_ORG "org id"
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// InfluxDB v2 bucket name (Use: InfluxDB UI -> Load Data -> Buckets)
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#define INFLUXDB_BUCKET "bucket name"
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// Set timezone string according to https://www.gnu.org/software/libc/manual/html_node/TZ-Variable.html
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// Examples:
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// Pacific Time: "PST8PDT"
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// Eastern: "EST5EDT"
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// Japanesse: "JST-9"
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// Central Europe: "CET-1CEST,M3.5.0,M10.5.0/3"
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#define TZ_INFO "CET-1CEST,M3.5.0,M10.5.0/3"
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// InfluxDB client instance with preconfigured InfluxCloud certificate
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InfluxDBClient client(INFLUXDB_URL, INFLUXDB_ORG, INFLUXDB_BUCKET, INFLUXDB_TOKEN, InfluxDbCloud2CACert);
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// InfluxDB client instance without preconfigured InfluxCloud certificate for insecure connection
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//InfluxDBClient client(INFLUXDB_URL, INFLUXDB_ORG, INFLUXDB_BUCKET, INFLUXDB_TOKEN);
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// Data point
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Point sensor("wifi_status");
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void setup() {
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Serial.begin(115200);
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// Setup wifi
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WiFi.mode(WIFI_STA);
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wifiMulti.addAP(WIFI_SSID, WIFI_PASSWORD);
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Serial.print("Connecting to wifi");
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while (wifiMulti.run() != WL_CONNECTED) {
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Serial.print(".");
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delay(500);
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}
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Serial.println();
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// Add tags
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sensor.addTag("device", DEVICE);
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sensor.addTag("SSID", WiFi.SSID());
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// Alternatively, set insecure connection to skip server certificate validation
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//client.setInsecure();
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// Accurate time is necessary for certificate validation and writing in batches
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// For the fastest time sync find NTP servers in your area: https://www.pool.ntp.org/zone/
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// Syncing progress and the time will be printed to Serial.
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timeSync(TZ_INFO, "pool.ntp.org", "time.nis.gov");
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// Check server connection
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if (client.validateConnection()) {
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Serial.print("Connected to InfluxDB: ");
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Serial.println(client.getServerUrl());
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} else {
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Serial.print("InfluxDB connection failed: ");
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Serial.println(client.getLastErrorMessage());
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}
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}
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void loop() {
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// Store measured value into point
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sensor.clearFields();
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// Report RSSI of currently connected network
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sensor.addField("rssi", WiFi.RSSI());
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// Print what are we exactly writing
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Serial.print("Writing: ");
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Serial.println(client.pointToLineProtocol(sensor));
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// If no Wifi signal, try to reconnect it
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if (wifiMulti.run() != WL_CONNECTED) {
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Serial.println("Wifi connection lost");
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}
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// Write point
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if (!client.writePoint(sensor)) {
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Serial.print("InfluxDB write failed: ");
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Serial.println(client.getLastErrorMessage());
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}
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//Wait 10s
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Serial.println("Wait 10s");
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delay(10000);
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} |