public-Homekit_Split/001-homekit_hub/lib/ESP8266 Influxdb/examples/SecureBatchWrite/SecureBatchWrite.ino
Zygfryd Homonto 5f1b6cd8f0 public
2024-07-20 21:58:04 +01:00

167 lines
5.9 KiB
C++

/**
* Secure Write Example code for InfluxDBClient library for Arduino
* Enter WiFi and InfluxDB parameters below
*
* Demonstrates connection to any InfluxDB instance accesible via:
* - unsecured http://...
* - secure https://... (appropriate certificate is required)
* - InfluxDB 2 Cloud at https://cloud2.influxdata.com/ (certificate is preconfigured)
* Measures signal level of all visible WiFi networks including signal level of the actually connected one
* This example demonstrates time handling, how to write measures with different priorities, batching and retry
* Data can be immediately seen in a InfluxDB 2 Cloud UI - measurements wifi_status and wifi_networks
**/
#if defined(ESP32)
#include <WiFiMulti.h>
WiFiMulti wifiMulti;
#define DEVICE "ESP32"
#elif defined(ESP8266)
#include <ESP8266WiFiMulti.h>
ESP8266WiFiMulti wifiMulti;
#define DEVICE "ESP8266"
#define WIFI_AUTH_OPEN ENC_TYPE_NONE
#endif
#include <InfluxDbClient.h>
#include <InfluxDbCloud.h>
// WiFi AP SSID
#define WIFI_SSID "SSID"
// WiFi password
#define WIFI_PASSWORD "PASSWORD"
// InfluxDB v2 server url, e.g. https://eu-central-1-1.aws.cloud2.influxdata.com (Use: InfluxDB UI -> Load Data -> Client Libraries)
#define INFLUXDB_URL "server-url"
// InfluxDB v2 server or cloud API authentication token (Use: InfluxDB UI -> Load Data -> Tokens -> <select token>)
#define INFLUXDB_TOKEN "server token"
// InfluxDB v2 organization id (Use: InfluxDB UI -> Settings -> Profile -> <name under tile> )
#define INFLUXDB_ORG "org id"
// InfluxDB v2 bucket name (Use: InfluxDB UI -> Load Data -> Buckets)
#define INFLUXDB_BUCKET "bucket name"
// Set timezone string according to https://www.gnu.org/software/libc/manual/html_node/TZ-Variable.html
// Examples:
// Pacific Time: "PST8PDT"
// Eastern: "EST5EDT"
// Japanesse: "JST-9"
// Central Europe: "CET-1CEST,M3.5.0,M10.5.0/3"
#define TZ_INFO "CET-1CEST,M3.5.0,M10.5.0/3"
// NTP servers the for time synchronization.
// For the fastest time sync find NTP servers in your area: https://www.pool.ntp.org/zone/
#define NTP_SERVER1 "pool.ntp.org"
#define NTP_SERVER2 "time.nis.gov"
#define WRITE_PRECISION WritePrecision::S
#define MAX_BATCH_SIZE 10
#define WRITE_BUFFER_SIZE 30
// InfluxDB client instance with preconfigured InfluxCloud certificate
InfluxDBClient client(INFLUXDB_URL, INFLUXDB_ORG, INFLUXDB_BUCKET, INFLUXDB_TOKEN, InfluxDbCloud2CACert);
// InfluxDB client instance without preconfigured InfluxCloud certificate for insecure connection
//InfluxDBClient client(INFLUXDB_URL, INFLUXDB_ORG, INFLUXDB_BUCKET, INFLUXDB_TOKEN);
// Data point
Point sensorStatus("wifi_status");
// Number for loops to sync time using NTP
int iterations = 0;
void setup() {
Serial.begin(115200);
// Setup wifi
WiFi.mode(WIFI_STA);
wifiMulti.addAP(WIFI_SSID, WIFI_PASSWORD);
Serial.print("Connecting to wifi");
while (wifiMulti.run() != WL_CONNECTED) {
Serial.print(".");
delay(500);
}
Serial.println();
// Add tags
sensorStatus.addTag("device", DEVICE);
sensorStatus.addTag("SSID", WiFi.SSID());
// Alternatively, set insecure connection to skip server certificate validation
//client.setInsecure();
// Accurate time is necessary for certificate validation and writing in batches
// Syncing progress and the time will be printed to Serial.
timeSync(TZ_INFO, NTP_SERVER1, NTP_SERVER2);
// Check server connection
if (client.validateConnection()) {
Serial.print("Connected to InfluxDB: ");
Serial.println(client.getServerUrl());
} else {
Serial.print("InfluxDB connection failed: ");
Serial.println(client.getLastErrorMessage());
}
// Enable messages batching and retry buffer
client.setWriteOptions(WriteOptions().writePrecision(WRITE_PRECISION).batchSize(MAX_BATCH_SIZE).bufferSize(WRITE_BUFFER_SIZE));
}
void loop() {
// Sync time for batching once per hour
if (iterations++ >= 360) {
timeSync(TZ_INFO, NTP_SERVER1, NTP_SERVER2);
iterations = 0;
}
// Report networks (low priority data) just in case we successfully wrote the previous batch
if (client.isBufferEmpty()) {
// Report all the detected wifi networks
int networks = WiFi.scanNetworks();
// Set identical time for the whole network scan
time_t tnow = time(nullptr);
for (int i = 0; i < networks; i++) {
Point sensorNetworks("wifi_networks");
sensorNetworks.addTag("device", DEVICE);
sensorNetworks.addTag("SSID", WiFi.SSID(i));
sensorNetworks.addTag("channel", String(WiFi.channel(i)));
sensorNetworks.addTag("open", String(WiFi.encryptionType(i) == WIFI_AUTH_OPEN));
sensorNetworks.addField("rssi", WiFi.RSSI(i));
sensorNetworks.setTime(tnow); //set the time
// Print what are we exactly writing
Serial.print("Writing: ");
Serial.println(client.pointToLineProtocol(sensorNetworks));
// Write point into buffer - low priority measures
client.writePoint(sensorNetworks);
}
} else
Serial.println("Wifi networks reporting skipped due to communication issues");
// Report RSSI of currently connected network
sensorStatus.setTime(time(nullptr));
sensorStatus.addField("rssi", WiFi.RSSI());
// Print what are we exactly writing
Serial.print("Writing: ");
Serial.println(client.pointToLineProtocol(sensorStatus));
// Write point into buffer - high priority measure
client.writePoint(sensorStatus);
// Clear fields for next usage. Tags remain the same.
sensorStatus.clearFields();
// If no Wifi signal, try to reconnect it
if (wifiMulti.run() != WL_CONNECTED) {
Serial.println("Wifi connection lost");
}
// End of the iteration - force write of all the values into InfluxDB as single transaction
Serial.println("Flushing data into InfluxDB");
if (!client.flushBuffer()) {
Serial.print("InfluxDB flush failed: ");
Serial.println(client.getLastErrorMessage());
Serial.print("Full buffer: ");
Serial.println(client.isBufferFull() ? "Yes" : "No");
}
// Wait 10s
Serial.println("Wait 10s");
delay(10000);
}