NHD-14432WG-BTFH-V#T Datasheet's Initialization Code

Terence D

• May 24, 2017 03:07

Hi, I just purchased and received my NHD-14432WG-BTFH-V#T that I'm using with a Tiva LaunchPad.  I'm a very experienced C/C++ software developer, but looking at the datasheet I don't fully understand the code.  For example, it starts with this:

#include <REG52.H>
#include "AL.h"
sbit ID = P3^0;
sbit RW = P3^7;
sbit E = P3^4;

A few questions:

• Where are these header files (REG52.H and AL.h) supposed to come from?
• What does "sbit" mean?  Set bit?
• What does P3 refer to?

Any explanation on these topics would be appreciated.  Thanks!

-Terence

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  Saurabh_B

  • May 25, 2017 03:07

  The code below is for our 8051 Control Board. The REG52.h and AL.h are required libraries to configure this controller.
  
  The sbit command is the same as #define, where instead of toggling P3^7 you would just toggle RW.
  P3 is Port 3, which is one of the ports brought out to the user on this controller.

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  Terence D

  • May 26, 2017 03:07

  Ah, got it.  Thank you Saurabh.
  
  -Terence

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