58 lines
2.1 KiB
C++
58 lines
2.1 KiB
C++
// ----------------------------------------------------------------------------
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// LCDiSpeed - LCD Interface Speed test for LiquidCrystal_PCF8574 library
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// ----------------------------------------------------------------------------
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// This sketch is a wrapper sketch for the hd44780 library example LCDiSpeed.
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// Note:
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// This is not a normal sketch and should not be used as model or example
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// of hd44780 library sketches.
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// This sketch is simple wrapper that declares the needed lcd object for the
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// hd44780 library sketch.
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// It is provided as a convenient way to run a pre-configured sketch for
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// the i/o class.
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// The source code for this sketch lives in hd44780 examples:
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// hd44780/examples/hd44780examples/LCDiSpeed/LCDiSpeed.ino
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// From IDE:
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// [File]->Examples-> hd44780/hd44780examples/LCDiSpeed
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//
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#include <Wire.h>
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#include <LiquidCrystal_PCF8574.h>
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// ugliness to allow this sketch to locate the hd44780 example sketch
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// note: hd44780.h is not needed, it is only included to get its directory on the include path
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#include <hd44780.h>
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#undef hd44780_h // undefine this so the example sketch does not think hd44780 is being used.
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#if ARDUINO < 157
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#error "This sketch Requires Arduino 1.5.7 or higher"
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#endif
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// NOTE: uses API that only works on IDE 1.5.7 and up
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#define WIRECLOCK 400000L // tell hd44780 example to use this i2c clock rate
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// cols and rows don't have to be exact to still get accurate transfer numbers
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#define LCD_COLS 16
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#define LCD_ROWS 2
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// declare the lcd object
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// Note: The i2c address must match the backpack address
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// and the library only works with certain backpacks
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const uint8_t i2cAddr = 0x27;
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LiquidCrystal_PCF8574 lcd(i2cAddr);
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// tell the hd44780 sketch the lcd object has been declared
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#define HD44780_LCDOBJECT
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// tell lcd hd44780 sketch to call custom customLCDinit() for initialization
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#define LCDISPEED_CALL_CUSTOM_LCDINIT
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// have to use custom initialzation for this library
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void custom_LCDinit(void)
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{
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lcd.begin(LCD_COLS, LCD_ROWS);
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lcd.setBacklight(0xff);
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}
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// include the hd44780 library LCDiSpeed sketch source code
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#include <examples/hd44780examples/LCDiSpeed/LCDiSpeed.ino>
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