![]() ![]() When using PlatformIO, to support float you must add following line in platformio. The most difference to the original LiquidCrystal library from Arduino is a new API and this library supports printf () functionality. hd44780 currently includes i/o subclasses for Arduino direct pin control, i2c expander backpacks, and LCDs with native i2c interface. This library is for the HD47780 LCDs with 4-bit interface for use with Arduino. The hd44780 API also provides some addtional extensions, including return status for API functions, ability to read from the LCD, and ability to configure the LCD command execution timing. ![]() Finally, the article will give an example C code to interface an AVR ATMEGA32 microcontroller with a 16×2 LCD. Then, it’ll discuss some important instructions for the common LCD modules that are compatible with the HD44780 LCD controller/driver chip. The API functionality provided by the hd44780 library class, when combined with an hd44780 library i/o subclass, is compatible with the API functionality of the Arduino LiquidCrystal library as well as most of the LCD API 1.0 Specification. This article will take a look at the pinout of a basic 16×2 LCD module. ![]() Hd44780 is an extensible LCD library for hd44780 based LCD displays. pinout is as follows: PCF8574 - HD44780 P0 - LCD11 - D4 P1 - LCD12 - D5 P2 - LCD13 - D6 P3 - LCD14 - D7 P4 - LCD4 - RS P5 - LCD5 - R/W P6 - LCD6 - E P7 - LCD15 - LED BACKLIGHT I dont understand why P0 would be permanently connected to VSS Texy Hmm.
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