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weatherstation/influxdb-lib/examples/influxdb_write/influxdb_write.ino

63 lines
2.2 KiB

#include <Arduino.h>
#include <ESP8266WiFi.h>
#include <ESP8266WiFiMulti.h>
#include <ESP8266Influxdb.h>
const char *INFLUXDB_HOST = "host_or_ip";
const uint16_t INFLUXDB_PORT = 8086;
const char *DATABASE = "dbname";
const char *DB_USER = "dbuser";
const char *DB_PASSWORD = "dbpassword";
ESP8266WiFiMulti WiFiMulti;
Influxdb influxdb(INFLUXDB_HOST, INFLUXDB_PORT);
void setup() {
Serial.begin(115200);
WiFiMulti.addAP("SSID", "PASSWORD");
while (WiFiMulti.run() != WL_CONNECTED) {
delay(100);
}
Serial.println("Ready");
influxdb.opendb(DATABASE, DB_USER, DB_PASSWORD);
}
void loop() {
// Writing data with influxdb HTTP API
// https://influxdb.com/docs/v0.9/guides/writing_data.html
Serial.println("Writing data to host " + String(INFLUXDB_HOST) + ":" +
INFLUXDB_PORT + "'s database=" + DATABASE);
String data = "analog_read,method=HTTP_API,pin=A0 value=" + String(analogRead(A0));
influxdb.write(data);
Serial.println(influxdb.response() == DB_SUCCESS ? "HTTP write success"
: "Writing failed");
// Writing data using FIELD object
// Create field object with measurment name=analog_read
FIELD dataObj("analog_read");
dataObj.addTag("method", "Field_object"); // Add method tag
dataObj.addTag("pin", "A0"); // Add pin tag
dataObj.addField("value", analogRead(A0)); // Add value field
Serial.println(influxdb.write(dataObj) == DB_SUCCESS ? "Object write success"
: "Writing failed");
// Empty field object.
dataObj.empty();
// Querying Data
// https://influxdb.com/docs/v0.9/query_language/query_syntax.html
Serial.println("Querying data ........");
String sql = "select * from analog_read order by time desc limit 2";
if (influxdb.query(sql) == DB_SUCCESS) {
while (influxdb.available()) {
String line = influxdb.readStringUntil('\n');
Serial.println(line);
}
}
else
Serial.println("Query Failed");
delay(30000);
}