Definitions for pin mapping. More...

Detailed Description

Definitions for pin mapping.

Copyright: Copyright © 2022 by Jason Duffy.

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

Author: Jason Duffy

Date: 22nd June 2022

This file provides definitions for pin/port references used in the hd44780 driver. If you are using it in 8 bit mode, you need to wire all 8 data pins D0 - D7 to pins Px0 - Px7 of a single port, and define that port as LCD_DATA_PORT. You do not need to define LCD_D0 - LCD_D3 in this file though as they are not referred to by pin in the code, only by whole port.

If you are using the display in 4 bit mode, you can wire the 4 data pins D4 - D7 to any 4 pins on the port you defined as LCD_DATA_PORT, just make sure they are in the correct order (you cannot wire them as D7, D5, D6, D4 for instance). The LCD_CTRL_PORT can either be a separate port, or it can be on the same port as the data pins (this only applies in 4 bit mode).

If you'd like to expand this project, you need to keep just one pin_defines.h file per project. All pins and ports can be defined here, then just #include "pin_defines.h" in any file that uses these definitions. Remember to prefix your pin/port names with the name of the module or device they belong to.

Definition in file pin_defines.h.