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Ada i2c interface for LCD2004 (4 Lines) HD44780 4x20 5x7 LCD display

License: GNU General Public License v2.0

Ada 98.04% Makefile 1.96%

ada-i2c-interface-for-lcd2004-hd44780-4x20-5x7-lcd-display's Introduction

Ada i2c interface for LCD2004 HD44780 4x20 5x7 LCD display

Ada i2c interface for PCF8574 Remote 8-bit I/O I2C expander to drive a LCD2004 HD44780 4x20 5x7 LCD display Adaption of the C device I/O system call functions: open, close, read, write, ioctl and perror. Due to the variadic nature of ioctl it have been adapted specific for the i2c interface purpose. See io.ads and io.adb for details.

Hardware:

  • PCF8574 Remote 8-bit I/O I2C expander
  • LCD2004 (4 lines) HD44780 4x20 5x7 LCD display
  • Raspberry Pi 3 Model B+

Wiring:

I2c device 1 is used.

PCFF8574 "Backpack" PIN Raspberry Pi PIN
GND GND
VCC +5V
SDA GPIO2 (SDA1)
SCL GPIO3 (SCL1)

ada-i2c-interface-for-lcd2004-hd44780-4x20-5x7-lcd-display's People

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