GLCD Interface with PIC16F877A Revision as of 21:20, 23 May 2016 by Explorer (Talk | contribs) (diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)

In this tutorial we'll see, how to interface 128*64 GLCD with PIC16F877A Starter board. We will using KS0108 controller based JHD12864E display. There are many displays out there based on KS0108 or compatible display controller. They all work the same way, but make sure to check the datasheet for the pin diagram before doing the connection.

Prerequisites

Please check this tutorial for detailed explanation on GLCD.

Hookup

Below table shows the GLCD pins connection.

RS	RW	EN	CS1	CS2	D0	D1	D2	D3	D4	D5	D6	D7
PD_0	PD_1	PD_2	PD_3	PD_4	PB_0	PB_1	PB_2	PB_3	PB_4	PB_5	PB_6	PB_7

Code

	#include "rtc.h"
	#include "lcd.h"
	int main()
	{
	rtc_t rtc;
	/*Connect RS->PB0, RW->PB1, EN->PB2 and data bus to PORTB.4 to PORTB.7*/
	LCD_SetUp(PB_0,PB_1,PB_2,P_NC,P_NC,P_NC,P_NC,PB_4,PB_5,PB_6,PB_7);
	LCD_Init(2,16);
	/*Connect SCL->PC3, SDA->PC4*/
	RTC_Init();
	rtc.hour = 0x10; // 10:40:20 am
	rtc.min = 0x40;
	rtc.sec = 0x00;
	rtc.date = 0x01; //1st Jan 2016
	rtc.month = 0x01;
	rtc.year = 0x16;
	rtc.weekDay = 5; // Friday: 5th day of week considering monday as first day.
	/*##### Set the time and Date only once. Once the Time and Date is set, comment these lines
	and reflash the code. Else the time will be set every time the controller is reset*/
	RTC_SetDateTime(&rtc); // 10:40:20 am, 1st Jan 2016
	/* Display the Time and Date continuously */
	while(1)
	{
	RTC_GetDateTime(&rtc);
	LCD_GoToLine(0);
	LCD_Printf("time:%2x:%2x:%2x \nDate:%2x/%2x/%2x",(uint16_t)rtc.hour,(uint16_t)rtc.min,(uint16_t)rtc.sec,(uint16_t)rtc.date,(uint16_t)rtc.month,(uint16_t)rtc.year);
	}
	return (0);
	}

view raw pic16f877a_ds1307rtc.c hosted with ❤ by GitHub

Demo

Downloads

Download the complete project folder from the below link:

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