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Touch screen and GLCD based Home Automation

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Abstract:-

Touch screen based Appliances Control System is used to control various electrical appliances in our home using a touch screen panel. Although this project is aimed at controlling home appliances, it can also be used in industries and colleges. We have used 2 relays in which we have connected a bulb and a fan. This project can control both AC  and DC devices. User has to use a touch screen which acts as control panel for sending commands. These control commands are then sent through a wireless RF communication module.

Image of GLCD Mounted on Home Automation System

Fig. 1: Prototype of Touch Screen and GLCD based Home Automation System

Description:-

Here the Project is divided into two sections
1.      Transmitter Section
2.      Receiver Section
 
Transmitter Section:-
 
·     Here we are using 128 x 64 graphical LCD, ATMEGA 16  microcontroller, touchscreen , RF transmitter module, HT-12E (Encoder) and power supply section. Touchscreen is mounted on graphical LCD. The circuit of the Transmitter is shown in  the figure below.
 
·    Here data pin of GLCD (Pin 7 to 15)  is connected with PORT of ATMEGA 16.(Pin 7 of GLCD is connected to Pin 1 of ATMEGA 16. Pin 8 of GLCD is connected to Pin 2 of ATMEGA 16 and so on)
 
·   We are using 1MHz internal clock of ATMEGA 16 which eliminates the need for any external crystal.
 
·    Reset Pin is connected to the ground through a Switch so when we press the switch the ATMEGA 16 will reset
 
·   The Control Pins of Graphical LCD ( RS,R/W,EN..etc) are Connected to the PORTD of ATMEGA 16. ATMEGA 16 is used to control the Graphical LCD by PORTD.
 
·    There are two chips in Graphical LCD  which will be controlled by two Pins known as CS1 (Pin 15) and CS2 (Pin 16).  These are connected to ATMEGA 16 microcontroller’s Pin 17 and Pin 18 respectively. 
 
·    The reset Pin of Graphical LCD (Pin 17) is connected to Pin 19 of ATMEGA 16.
 
·    Here the touch screen is connected to the PORTA of ATMEGA 16.The output of the touch screen will be analog so we need to convert it into Digital, with the help of internal ADC of ATMEGA 16.  The Port A has inbuilt ADC(Analog to digital converter) so we do not require external ADC chip (like ADC 0804) .
 
·    The Output will be taken from PORTC of ATMEGA 16  which is connected to HT12E(encoder) IC.
 
·    All addresses from A0 to A9 of HT12E are connected to ground at both transmitter and receiver circuit.
 
·    In order to enable transmission,  its  HT12E (encoder) Pin is connected to the ground. 
 
·    The output (DOUT) of HT12E (encoder) is connected to the data of the RF module to transmit the bits through RF signal.
 
Working of Transmitter section
 
·    When we touch a particular area in touch screen (like Touch at symbols LIGHT ON ), the resistance of the touch screen will be changed according to the X and Y co-ordinates and it will  lead to a change in the voltage across the touch screen output.
(The output of touch screen is in analog form) We will convert the Analog output to Digital.
 
·   Then the ATMEGA 16 will check if the X and Y co-ordinates range  lie in the predefined range. If es then it will set the output according to our requirement at PORTC. This signal  is transmitted using RF Module through antenna.
 
Receiver Section:
 
·    In receiver section we are using RF -Module (Rx), HT-12 Decoder chip,ULN 20003(Relay driver IC),Power supply section and relay etc
 
·    Here data Pin of RF module is connected to HT 12 decoder chip and  the entire address of HT 12D is connected to the ground
 
·    The output of HT12 D (D0,D1,D2,D3) is connected to input of ULN 2003 and output of ULN 2003 is connected to the relay.
·    Two ICs have been used namely 7805 for 5V  VCC (Supply given to IC)  and 7812 for 12V given to Relay.
 

Image of GLCD Mounted on Home Automation System

Fig. 2: Image of GLCD Mounted on Home Automation System

Prototype of Touch Screen and GLCD based Home Automation System

Fig. 3: Image of Touch Screen and GLCD based Home Automation System

Working  of  Receiver Section:

·    When signal is received at RF receiver then it will reach at HT12D chip which decodes the signal and gives the output according to the  data received from transmitter.
·     When we touch at Symbol of Light ON then the Data in forms of bits (1’s and 0’s) is transmitted through antenna and reaches  to the Receiver. HT12D will decode the data and gives output according to the transmitted bits.
·     So according to transmitted input, the output also changes and if we touch at Light ON symbol then D0 Output of HT12D becomes high and this high output is applied to ULN 2003.  This will energize relay and light will be turned-on at receiver side. (Same happens  with  fan).
·     If we touch at Symbol of LIGHT OFF then the data in forms of bits(1’s and 0’s) is transmitted through antenna and reaches  to the receiver .HT12D decodes the data and gives output according to the transmitted bits.
·    So according to transmitted input, output also changes and if we touch at Light FF symbol then D0 Output of HT12D becomes low and this low output is applied to ULN 2003 so this will de-energize relay and light will be turned off at receiver side. (Same happens with  fan).

Project Source Code

###


//Program to



#include<avr/io.h>
/*Includes io.h header file where all the Input/Output Registers and its Bits are defined for all AVR microcontrollers*/
 
#define F_CPU 1000000
/*Defines a macro for the delay.h header file. F_CPU is the microcontroller frequency value for the delay.h header file. Default value of F_CPU in delay.h header file is 1000000(1MHz)*/
 
#include<util/delay.h>
/*Includes delay.h header file which defines two functions, _delay_ms (millisecond delay) and _delay_us (microsecond delay)*/
 
 
#define GLCD_DATA_PORT PORTB
/*Defines a macro for the glcd.h header file. GLCD_DATA_PORT macro defines the PORT Register to which the data pins of the Graphical LCD are connected. Default PORT Resistor for data pins in glcd.h file is PORTA*/
 
#define  GLCD_CONT_PORT  PORTD
/*Defines a macro for the glcd.h header file. GLCD_CONT_PORT macro defines the PORT Register to which the control pins of the Graphical LCD are connected. Default PORT Resistor for control pins in glcd.h file is PORTB*/
 
#define  GLCD_RS  PD0
/*Defines a macro for the glcd.h header file. GLCD_RS macro defines the microcontroller Port pin to which the RS pin of the Graphical LCD is connected. Default Port pin for RS pin in glcd.h file is PB0*/
 
#define  GLCD_RW  PD1
/*Defines a macro for the glcd.h header file. GLCD_RW macro defines the microcontroller Port pin to which the RW pin of the Graphical LCD is connected. Default Port pin for RW pin in glcd.h file is PB1*/
 
#define  GLCD_EN  PD2
/*Defines a macro for the glcd.h header file. GLCD_EN macro defines the microcontroller Port pin to which the EN pin of the Graphical LCD is connected. Default Port pin for EN pin in glcd.h file is PB2*/
 
#define  GLCD_CS1  PD3
/*Defines a macro for the glcd.h header file. GLCD_CS1 macro defines the microcontroller Port pin to which the CS1 pin of the Graphical LCD is connected. Default Port pin for CS1 pin in glcd.h file is PB3*/
 
#define  GLCD_CS2  PD4
/*Defines a macro for the glcd.h header file. GLCD_CS1 macro defines the microcontroller Port pin to which the CS2 pin of the Graphical LCD is connected. Default Port pin for CS2 pin in glcd.h file is PB4*/
 
#define  GLCD_RST  PD5
/*Defines a macro for the glcd.h header file. GLCD_RST macro defines the microcontroller Port pin to which the RST pin of the Graphical LCD is connected. Default Port pin for RST pin in glcd.h file is PB5*/
 
#include<avr/glcd.h>
 
#include<avr/touchscreen.h>
 
 
/*Includes glcd.h header file which defines different functions for 128X64 Graphical LCD. GLCD header file version is 1.1*/
 
const unsigned char picture[1024] = {
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xE0, 0x07, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xC0, 0x03, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFE, 0x00, 0x00, 0x7F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFE, 0x00, 0x00, 0x7F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFC, 0x00, 0x80, 0x3F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFC, 0x01, 0xC0, 0x1F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xF8, 0x03, 0xE0, 0x1F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xF8, 0x07, 0xF0, 0x1F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xF8, 0x0F, 0xF0, 0x1F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xF8, 0x1F, 0xF8, 0x1F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xF8, 0x1F, 0xFC, 0x1F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xF8, 0x1F, 0xFC, 0x1F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xF8, 0x00, 0x00, 0x1F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFC, 0x00, 0x00, 0x1F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 
 
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFC, 0x00, 0x00, 0x3F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFE, 0x00, 0x00, 0x3F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFE, 0x00, 0x00, 0x7F, 0xFF, 0x80, 0x7F, 0xFF, 0xFF, 0xFF, 0xFF, 
0xFF, 0xFF, 0xFF, 0xF1, 0xFF, 0xFF, 0x00, 0x00, 0xFF, 0xFE, 0x00, 0x1F, 0xFF, 0xFF, 0xFF, 0xFF, 
0xFF, 0xFF, 0xFF, 0x00, 0x3F, 0xFF, 0xC0, 0x01, 0xFF, 0xFC, 0x00, 0x0F, 0xFF, 0xFF, 0xFF, 0xFF, 
0xFF, 0xFF, 0xFE, 0x00, 0x0F, 0xFF, 0xE0, 0x07, 0xFF, 0xF8, 0x00, 0x07, 0xFF, 0xFF, 0xFF, 0xFF, 
0xFF, 0xFF, 0xFC, 0x00, 0x07, 0xFF, 0xFE, 0x7F, 0xFF, 0xF0, 0x00, 0x03, 0xFF, 0xFF, 0xFF, 0xFF, 
0xFF, 0xFF, 0xF8, 0x00, 0x03, 0xFF, 0xFF, 0xFF, 0xFF, 0xE0, 0x00, 0x01, 0xFF, 0xFF, 0xFF, 0xFF, 
0xFF, 0xFF, 0xF0, 0x00, 0x01, 0xFF, 0xFE, 0x0F, 0xFF, 0xE0, 0x38, 0x01, 0xFF, 0xFF, 0xFF, 0xFF, 
0xFF, 0xFF, 0xE0, 0x07, 0x01, 0xFF, 0xF8, 0x03, 0xFF, 0xC0, 0x3C, 0x00, 0xFF, 0xFF, 0xFF, 0xFF, 
0xFF, 0xFF, 0xE0, 0x0F, 0x00, 0xFF, 0xE0, 0x00, 0xFF, 0xC0, 0x3F, 0x00, 0xFF, 0xFF, 0xFF, 0xFF, 
0xFF, 0xFF, 0xC0, 0x3F, 0x00, 0xFF, 0xE0, 0x00, 0xFF, 0xC0, 0x3F, 0x80, 0xFF, 0xFF, 0xFF, 0xFF, 
0xFF, 0xFF, 0xC0, 0x7F, 0x00, 0x7F, 0xC0, 0x40, 0x7F, 0xC0, 0x3F, 0xC0, 0xFF, 0xFF, 0xFF, 0xFF, 
0xFF, 0xFF, 0xC0, 0xFF, 0x00, 0x7F, 0xC1, 0x50, 0x3F, 0xC0, 0x3F, 0xE0, 0xFF, 0xFF, 0xFF, 0xFF, 
0xFF, 0xFF, 0xC0, 0xFF, 0x00, 0x7F, 0x83, 0x58, 0x3F, 0xC0, 0x3F, 0x80, 0xFF, 0xFF, 0xFF, 0xFF, 
0xFF, 0xFF, 0xC0, 0x7F, 0x00, 0x7F, 0x82, 0x48, 0x3F, 0xC0, 0x3F, 0x00, 0xFF, 0xFF, 0xFF, 0xFF, 
 
0xFF, 0xFF, 0xC0, 0x3F, 0x00, 0x7F, 0x82, 0x48, 0x3F, 0xC0, 0x3E, 0x00, 0xFF, 0xFF, 0xFF, 0xFF, 
0xFF, 0xFF, 0xE0, 0x0F, 0x00, 0xFF, 0x82, 0x08, 0x3F, 0xE0, 0x3C, 0x01, 0xFF, 0xFF, 0xFF, 0xFF, 
0xFF, 0xFF, 0xE0, 0x07, 0x00, 0xFF, 0x83, 0x18, 0x3F, 0xE0, 0x10, 0x01, 0xFF, 0xFF, 0xFF, 0xFF, 
0xFF, 0xFF, 0xE0, 0x03, 0x01, 0xFF, 0xC1, 0xF0, 0x7F, 0xF0, 0x00, 0x03, 0xFF, 0xFF, 0xFF, 0xFF, 
0xFF, 0xFF, 0xF0, 0x00, 0x01, 0xFF, 0xC0, 0x00, 0x7F, 0xF8, 0x00, 0x07, 0xFF, 0xFF, 0xFF, 0xFF, 
0xFF, 0xFF, 0xF8, 0x00, 0x03, 0xFF, 0xE0, 0x00, 0xFF, 0xFC, 0x00, 0x0F, 0xFF, 0xFF, 0xFF, 0xFF, 
0xFF, 0xFF, 0xFC, 0x00, 0x07, 0xFF, 0xF0, 0x01, 0xFF, 0xFF, 0x00, 0x3F, 0xFF, 0xFF, 0xFF, 0xFF, 
0xFF, 0xFF, 0xFE, 0x00, 0x0F, 0xFF, 0xFC, 0x03, 0xFF, 0xFF, 0xC0, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 
0xFF, 0xFF, 0xFF, 0x80, 0x7F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xF8, 0x03, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xF0, 0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xC0, 0x00, 0x7F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x80, 0x00, 0x3F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x80, 0x00, 0x1F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 
 
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x1F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x0F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFE, 0x00, 0x00, 0x0F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFE, 0x0F, 0xFE, 0x0F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFE, 0x0F, 0xFE, 0x0F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFE, 0x07, 0xFC, 0x0F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFE, 0x03, 0xF8, 0x0F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFE, 0x01, 0xF0, 0x0F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0xE0, 0x0F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x40, 0x1F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x80, 0x00, 0x1F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x80, 0x00, 0x3F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xC0, 0x00, 0x7F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xF0, 0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xF8, 0x03, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF 
 
};
 
 
 
int main(void)
{
DDRB=0xff; 
/*All the 8 pins of PortB are declared output (data pins of Graphical LCD are connected)*/
 
DDRD=0x03f; 
/*PD0, PD1, PD2, PD3, PD4 and PD5 pins of PortD are declared output (control pins of Graphical LCD are connected)*/
 
DDRC=0x0f;
/*PC0,PC1,PC2 and PC3 pins of PortC are declared output ( i/p1,i/p2,i/p3,i/p4 pins of DC Motor Driver are connected )*/
int x,y;
/*Variable declarations*/
 
 
adc_init();
/*ADC initialization*/
 
glcd_cs1_init();
/*Initializing Chip 1 of Graphical LCD */
 
glcd_cs2_init();
/*Initializing Chip 2 of Graphical LCD */
 
glcd_clear_screen();
/*Clear screen*/
 
glcd_cs1_command_write(0xb8);
/*Chip 1 section's 1st is page selected*/
 
glcd_cs1_command_write(0x40);
/*Chip 1 section's 1st column is selected*/
 
glcd_cs2_command_write(0xb8);
/*Chip 2 section's 1st page is selected*/
 
glcd_cs2_command_write(0x40);
/*Chip 2 section's 1st column is selected*/
 
/*For loop to display picture in Graphical LCD*/
/*Outer for loop to select 8 pages of both Chip sections of Graphical LCD*/
for(unsigned char i=0;i<8;i++)
{
glcd_cs1_command_write(0xb8+i);
/*Chip 1 section's page is elected*/
 
glcd_cs2_command_write(0xb8+i);
/*Chip 2 section's page is selected*/
 
/*Inner for loop to write Bit map values in 8 pages of both Chip section of Graphical LCD*/
for(unsigned char j=0;j<128;j++)
{
/*Checkinh whether the bit map value will be written in Chip 1 or Chip 2 section of Graphical LCD */
if(j<64)
{
glcd_cs1_data_write(picture[(128*i)+j]);
/*Bit map value is written in chip 1 section of Graphical LCD*/
}
else
{
glcd_cs2_data_write(picture[(128*i)+j]);
/*Bit map value is written in chip 2 section of Graphical LCD*/
}
}
}
while(1)
{
 
   x=read_touchscreen_x_coordinate();
/*Reading x-axis value of touch screen*/
 
_delay_ms(1);
/*1ms delay between each reading of touch screen values*/ 
 
y=read_touchscreen_y_coordinate();
/*Reading y-axis value of touch screen*/ 
 
_delay_ms(1);
/*1ms delay between each reading of touch screen values*/
 
 
 
if(((x>210) && (x<340) && (y>510) && (y<650)) || (PINC & (1<<PC5)))
{
PORTC=0x0A;
 
 
 
 
_delay_ms(200);
 
}
else if(((x>210) && (x<340) && (y>200) && (y<340)) || (PINC & (1<<PC7)))
{
PORTC=0x05;
 
 
 
_delay_ms(200);
 
}
else if(((x>90) && (x<210) && (y>350) && (y<510)) || (PINC & (1<<PC6)))
{
PORTC=0x02;
 
 
 
_delay_ms(200);
}
else if(((x>340) && (x<480) && (y>350) && (y<510)) || (PINC & (1<<PC4)))
{
PORTC=0x08;
 
 
 
_delay_ms(200);
}
else if(((x>210) && (x<340) && (y>350) && (y<510)) || (PINC == 0x05))
{
PORTC=0x03;
 
 
 
_delay_ms(200);
 
}
else
{
;
 
}
 
 
 
}
}
/*End of Program*/
###
 

Project Video

Filed Under: Electronic Projects

 

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