/********************************************************************************************************************************* Connect.ino Library for communicating with a MySQL or MariaDB Server Based on and modified from Dr. Charles A. Bell's MySQL_Connector_Arduino Library https://github.com/ChuckBell/MySQL_Connector_Arduino to support nRF52, SAMD21/SAMD51, SAM DUE, STM32F/L/H/G/WB/MP1, ESP8266, ESP32, etc. boards using W5x00, ENC28J60, LAM8742A Ethernet, WiFiNINA, ESP-AT, built-in ESP8266/ESP32 WiFi. The library provides simple and easy Client interface to MySQL or MariaDB Server. Built by Khoi Hoang https://github.com/khoih-prog/MySQL_MariaDB_Generic Licensed under MIT license **********************************************************************************************************************************/ /* MySQL Connector/Arduino Example : connect This example demonstrates how to connect to a MySQL server from an Arduino using an Arduino-compatible Ethernet shield. Note that "compatible" means it must conform to the Ethernet class library or be a derivative with the same classes and methods. For more information and documentation, visit the wiki: https://github.com/ChuckBell/MySQL_Connector_Arduino/wiki. INSTRUCTIONS FOR USE 1) Change the address of the server to the IP address of the MySQL server 2) Change the user and password to a valid MySQL user and password 3) Connect a USB cable to your Arduino 4) Select the correct board and port 5) Compile and upload the sketch to your Arduino 6) Once uploaded, open Serial Monitor (use 115200 speed) and observe If you do not see messages indicating you have a connection, refer to the manual for troubleshooting tips. The most common issues are the server is not accessible from the network or the user name and password is incorrect. Note: The MAC address can be anything so long as it is unique on your network. Created by: Dr. Charles A. Bell */ #include "defines.h" #include // Select the static Local IP address according to your local network IPAddress ip(192, 168, 2, 222); #define USING_HOST_NAME false //true #if USING_HOST_NAME // Optional using hostname, and Ethernet built-in DNS lookup char server[] = "your_account.ddns.net"; // change to your server's hostname/URL #else IPAddress server(192, 168, 2, 112); #endif uint16_t server_port = 5698; //3306; char default_database[] = "world"; char user[] = "invited-guest"; // MySQL user login username char password[] = "the-invited-guest"; // MySQL user login password MySQL_Connection conn((Client *)&client); void initEthernet() { #if !(USE_ETHERNET_PORTENTA_H7 || USE_ETHERNET_LAN8742A || USE_ETHERNET_LAN8720) MYSQL_LOGERROR(F("=========================================")); MYSQL_LOGERROR(F("Default SPI pinout:")); MYSQL_LOGERROR1(F("MOSI:"), MOSI); MYSQL_LOGERROR1(F("MISO:"), MISO); MYSQL_LOGERROR1(F("SCK:"), SCK); MYSQL_LOGERROR1(F("SS:"), SS); MYSQL_LOGERROR(F("=========================================")); #if defined(ESP8266) // For ESP8266, change for other boards if necessary #ifndef USE_THIS_SS_PIN #define USE_THIS_SS_PIN D2 // For ESP8266 #endif MYSQL_LOGERROR1(F("ESP8266 setCsPin:"), USE_THIS_SS_PIN); #if ( USE_ETHERNET_GENERIC || USE_ETHERNET_ENC ) // For ESP8266 // Pin D0(GPIO16) D1(GPIO5) D2(GPIO4) D3(GPIO0) D4(GPIO2) D8 // Ethernet 0 X X X X 0 // Ethernet2 X X X X X 0 // Ethernet3 X X X X X 0 // EthernetLarge X X X X X 0 // Ethernet_ESP8266 0 0 0 0 0 0 // D2 is safe to used for Ethernet, Ethernet2, Ethernet3, EthernetLarge libs // Must use library patch for Ethernet, EthernetLarge libraries Ethernet.init (USE_THIS_SS_PIN); #endif //( USE_ETHERNET_GENERIC || USE_ETHERNET_ENC ) #elif defined(ESP32) // You can use Ethernet.init(pin) to configure the CS pin //Ethernet.init(10); // Most Arduino shields //Ethernet.init(5); // MKR ETH shield //Ethernet.init(0); // Teensy 2.0 //Ethernet.init(20); // Teensy++ 2.0 //Ethernet.init(15); // ESP8266 with Adafruit Featherwing Ethernet //Ethernet.init(33); // ESP32 with Adafruit Featherwing Ethernet #ifndef USE_THIS_SS_PIN #define USE_THIS_SS_PIN 22 // For ESP32 #endif MYSQL_LOGERROR1(F("ESP32 setCsPin:"), USE_THIS_SS_PIN); // For other boards, to change if necessary #if ( USE_ETHERNET_GENERIC || USE_ETHERNET_ENC ) // Must use library patch for Ethernet, EthernetLarge libraries // ESP32 => GPIO2,4,5,13,15,21,22 OK with Ethernet, Ethernet2, EthernetLarge // ESP32 => GPIO2,4,5,15,21,22 OK with Ethernet3 //Ethernet.setCsPin (USE_THIS_SS_PIN); Ethernet.init (USE_THIS_SS_PIN); #endif //( USE_ETHERNET_GENERIC || USE_ETHERNET_ENC ) #elif ETHERNET_USE_RPIPICO pinMode(USE_THIS_SS_PIN, OUTPUT); digitalWrite(USE_THIS_SS_PIN, HIGH); // ETHERNET_USE_RPIPICO, use default SS = 5 or 17 #ifndef USE_THIS_SS_PIN #if defined(ARDUINO_ARCH_MBED) #define USE_THIS_SS_PIN 17 // For Arduino Mbed core #else #define USE_THIS_SS_PIN 17 // For E.Philhower core #endif #endif MYSQL_LOGERROR1(F("RPIPICO setCsPin:"), USE_THIS_SS_PIN); // For other boards, to change if necessary #if ( USE_ETHERNET_GENERIC || USE_ETHERNET_ENC ) // Must use library patch for Ethernet, EthernetLarge libraries // For RPI Pico using Arduino Mbed RP2040 core // SCK: GPIO2, MOSI: GPIO3, MISO: GPIO4, SS/CS: GPIO5 // For RPI Pico using E. Philhower RP2040 core // SCK: GPIO18, MOSI: GPIO19, MISO: GPIO16, SS/CS: GPIO17 // Default pin 5/17 to SS/CS //Ethernet.setCsPin (USE_THIS_SS_PIN); Ethernet.init (USE_THIS_SS_PIN); #endif //( USE_ETHERNET_GENERIC || USE_ETHERNET_LARGE ) #else //defined(ESP8266) // unknown board, do nothing, use default SS = 10 #ifndef USE_THIS_SS_PIN #define USE_THIS_SS_PIN 10 // For other boards #endif MYSQL_LOGERROR3(F("Board :"), BOARD_NAME, F(", setCsPin:"), USE_THIS_SS_PIN); // For other boards, to change if necessary #if ( USE_ETHERNET_GENERIC || USE_ETHERNET_ENC ) // Must use library patch for Ethernet, Ethernet2, EthernetLarge libraries Ethernet.init (USE_THIS_SS_PIN); #endif //( USE_ETHERNET_GENERIC || USE_ETHERNET_ENC ) #endif //defined(ESP8266) #if !(USE_ETHERNET_PORTENTA_H7 || USE_ETHERNET_LAN8742A || USE_ETHERNET_LAN8720) // Just info to know how to connect correctly #if defined(CUR_PIN_MISO) MYSQL_LOGERROR(F("Currently Used SPI pinout:")); MYSQL_LOGERROR1(F("MOSI:"), CUR_PIN_MOSI); MYSQL_LOGERROR1(F("MISO:"), CUR_PIN_MISO); MYSQL_LOGERROR1(F("SCK:"), CUR_PIN_SCK); MYSQL_LOGERROR1(F("SS:"), CUR_PIN_SS); #else MYSQL_LOGERROR(F("Currently Used SPI pinout:")); MYSQL_LOGERROR1(F("MOSI:"), MOSI); MYSQL_LOGERROR1(F("MISO:"), MISO); MYSQL_LOGERROR1(F("SCK:"), SCK); MYSQL_LOGERROR1(F("SS:"), SS); #endif MYSQL_LOGERROR(F("=========================")); #endif #endif // #if !(USE_ETHERNET_PORTENTA_H7 || USE_ETHERNET_LAN8742A || USE_ETHERNET_LAN8720) // start the ethernet connection and the server: // Use DHCP dynamic IP and random mac uint16_t index = millis() % NUMBER_OF_MAC; // Use Static IP //Ethernet.begin(mac[index], ip); Ethernet.begin(mac[index]); MYSQL_DISPLAY1("Using mac index =", index); MYSQL_DISPLAY1("Connected! IP address:", Ethernet.localIP()); } void setup() { Serial.begin(115200); while (!Serial && millis() < 5000); // wait for serial port to connect MYSQL_DISPLAY3("\nStarting Connect on", BOARD_NAME, ", with", SHIELD_TYPE); MYSQL_DISPLAY(MYSQL_MARIADB_GENERIC_VERSION); initEthernet(); MYSQL_DISPLAY3("Connecting to SQL Server @", server, ", Port =", server_port); MYSQL_DISPLAY3("User =", user, ", PW =", password); } void loop() { MYSQL_DISPLAY("Connecting..."); //if (conn.connect(server, server_port, user, password, default_database)) if (conn.connectNonBlocking(server, server_port, user, password, default_database) != RESULT_FAIL) { MYSQL_DISPLAY("Closing connection..."); conn.close(); // close the connection } else { MYSQL_DISPLAY("\nConnect failed. Trying again on next iteration."); } MYSQL_DISPLAY("\nSleeping..."); MYSQL_DISPLAY("================================================"); delay(60000); }