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libraries/MySQL_Connector_Arduino/examples/complex_insert/complex_insert.ino

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+/*
+  MySQL Connector/Arduino Example : complex insert
+
+  This example demonstrates how to issue an INSERT query to store data in a
+  table using data from variables in our sketch. In this case, we supply the
+  values dynamically.
+
+  This sketch simulates storing data from a sensor in a table.
+
+  For this, we will create a special database and table for testing.
+  The following are the SQL commands you will need to run in order to setup
+  your database for running this sketch.
+
+  CREATE DATABASE test_arduino;
+  CREATE TABLE test_arduino.hello_sensor (
+    num integer primary key auto_increment,
+    message char(40),
+    sensor_num integer,
+    value float,
+    recorded timestamp
+  );
+
+  Here we have a table that contains an auto_increment primary key, a text
+  field, a field to identify the sensor, the value read, and timestamp of
+  the recorded data.
+
+  Note: Since this sketch uses test data, we place the INSERT in the setup()
+        method so that it runs only once. Typically, you would have the
+        INSERT in the loop() method after your code to read from the sensor.
+
+  For more information and documentation, visit the wiki:
+  https://github.com/ChuckBell/MySQL_Connector_Arduino/wiki.
+
+  INSTRUCTIONS FOR USE
+
+  1) Create the database and table as shown above.
+  2) Change the address of the server to the IP address of the MySQL server
+  3) Change the user and password to a valid MySQL user and password
+  4) Connect a USB cable to your Arduino
+  5) Select the correct board and port
+  6) Compile and upload the sketch to your Arduino
+  7) Once uploaded, open Serial Monitor (use 115200 speed) and observe
+  8) After the sketch has run for some time, open a mysql client and issue
+     the command: "SELECT * FROM test_arduino.hello_sensor" to see the data
+     recorded. Note the field values and how the database handles both the
+     auto_increment and timestamp fields for us. You can clear the data with
+     "DELETE FROM test_arduino.hello_sensor".
+
+  Note: The MAC address can be anything so long as it is unique on your network.
+
+  Created by: Dr. Charles A. Bell
+*/
+#include <Ethernet.h>
+#include <MySQL_Connection.h>
+#include <MySQL_Cursor.h>
+
+byte mac_addr[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };
+
+IPAddress server_addr(10,0,1,35);  // IP of the MySQL *server* here
+char user[] = "root";              // MySQL user login username
+char password[] = "secret";        // MySQL user login password
+
+// Sample query
+char INSERT_DATA[] = "INSERT INTO test_arduino.hello_sensor (message, sensor_num, value) VALUES ('%s',%d,%s)";
+char query[128];
+char temperature[10];
+
+EthernetClient client;
+MySQL_Connection conn((Client *)&client);
+
+void setup() {
+  Serial.begin(115200);
+  while (!Serial); // wait for serial port to connect
+  Ethernet.begin(mac_addr);
+  Serial.println("Connecting...");
+  if (conn.connect(server_addr, 3306, user, password)) {
+    delay(1000);
+    // Initiate the query class instance
+    MySQL_Cursor *cur_mem = new MySQL_Cursor(&conn);
+    // Save
+    dtostrf(50.125, 1, 1, temperature);
+    sprintf(query, INSERT_DATA, "test sensor", 24, temperature);
+    // Execute the query
+    cur_mem->execute(query);
+    // Note: since there are no results, we do not need to read any data
+    // Deleting the cursor also frees up memory used
+    delete cur_mem;
+    Serial.println("Data recorded.");
+  }
+  else
+    Serial.println("Connection failed.");
+  conn.close();
+}
+
+
+void loop() {
+}