Lcd 4-bit with Explore M3
Revision as of 15:09, 28 April 2016 by Explorer (Talk | contribs)

In this tutorial we will see how to interface lcd in 4-bit mode using the explore Embedded bare metal libraries.
At the end will see how to use the libraries for 1x16, 2x16 and 4x20 LCD's.
The libraries can be used on different platforms like Keil, ARM GCC, GCC And Eclipse etc.


Prerequisites

Please check this tutorial for detailed explanation on LCD.
If you are doing it for the first time, then check the below links to setup the project for generating the .bin file.

  1. Keil4 Setup
  2. Keil5 Setup
  3. ARM GCC Setup
  4. Eclipse & ARM GCC Setup



Hardware Connection

RS RW EN D0 D1 D2 D3 D4 D5 D6 D7
5 6 7 P_NC P_NC P_NC P_NC 12 13 14 15

}

  • P_NC: Pin Not Connected




Code

Below is the sample code the blink the LED connected to pin 13.

#include "delay.h"
#include "gpio.h"
#include "stdutils.h"
#define LED 13 //LED is connected to pin 13 on Explore M3 board
int main()
{
SystemInit(); //Clock and PLL configuration
GPIO_PinFunction(LED,PINFUN_GPIO); // Configure Pin for Gpio
GPIO_PinDirection(LED,OUTPUT); // Configure the pin as OUTPUT
while(1)
{
GPIO_PinWrite(LED,HIGH); // Turn ON the Led
DELAY_ms(100); // Wait for some time
GPIO_PinWrite(LED,LOW); // Turn OFF the Led
DELAY_ms(100); // Wait for some time
}
}
view raw exploreM3_LedBlinking.c hosted with ❤ by GitHub


Demo
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