// ---------------------------------------------------------------------------- // LCDiSpeed - LCD Interface Speed test for hd44780 hd44780_pinIO i/o class // ---------------------------------------------------------------------------- // This sketch is a wrapper sketch for the hd44780 library example. // Note: // This is not a normal sketch and should not be used as model or exmaple // of hd44780 library sketches. // This sketch is simple wrapper that declares the needed lcd object for the // hd44780 library sketch. // It is provided as a convenient way to run a pre-configured sketch for // the i/o class. // The source code for this sketch lives in the hd44780 examples. // hd44780/examples/hd44780examples/LCDiSpeed/LCDiSpeed.ino // From IDE: // [File]->Examples-> hd44780/hd44780examples/LCDiSpeed // #include #include // declare Arduino pins used for LCD functions // and the lcd object // Note: this can be with or without backlight control: // without backlight control: // note that ESP8266 based arduinos must use the Dn defines rather than // raw pin numbers. #if defined (ARDUINO_ARCH_ESP8266) const int rs=D8, en=D9, db4=D4, db5=D5, db6=D6, db7=D7; // esp8266 Lolin/Wemos D1 R1 (uno form factor) #elif defined(ARDUINO_ARCH_ESP32) // note: GPIO12 needs a pulldown resistor const int rs=12, en=13, db4=17, db5=16, db6=27, db7=14; // esp32 espduino32 D1 R32 (uno form factor) #else const int rs=8, en=9, db4=4, db5=5, db6=6, db7=7; // for all other devices #endif hd44780_pinIO lcd(rs, en, db4, db5, db6, db7); //with backlight control: // backlight control requires two additional parameters // - an additional pin to control the backlight // - backlight active level which tells the library the level // needed to turn on the backlight. // note: If the backlight control pin supports PWM, dimming can be done // using setBacklight(dimvalue); // // WARNING: some lcd keypads have a broken backlight circuit // If you have a lcd keypad, it is recommended that you first run the // LCDKeypadCheck sketch to verify that the backlight circuitry // is ok before enabling backlight control. // However, the hd44780_PinIO class will autodetect the issue and // work around it in s/w. If the backlight circuitry is broken, // dimming will not be possible even if the backlight pin supports PWM. // #if defined (ARDUINO_ARCH_ESP8266) // esp8266 Lolin/Wemos D1 R1 (uno form factor) //const int rs=D8, en=D9, db4=D4, db5=D5, db6=D6, db7=D7, bl=D10, blLevel=HIGH; #elif defined(ARDUINO_ARCH_ESP32) // esp32 espduino32 D1 R32 (uno form factor) // note: GPIO12 needs a pulldown resistor //const int rs=12, en=13, db4=17, db5=16, db6=27, db7=14, bl=5, blLevel=HIGH; #else //const int rs=8, en=9, db4=4, db5=5, db6=6, db7=7, bl=10, blLevel=HIGH; #endif //hd44780_pinIO lcd(rs, en, db4, db5, db6, db7, bl, blLevel); // tell the hd44780 sketch the lcd object has been declared #define HD44780_LCDOBJECT // include the hd44780 library sketch source code #include