kabukiman85
Joined: 30 Oct 2008
Posts: 2
Location: Barcelona Spain
|
| Code forTouchscreen for Dev board easypic5 tested works fine |
 Posted: Thu Oct 30, 2008 10:07 am |
 |
|
I made this code to work with easypic5. I don't know if it is very efficient.
If anyone want to modify it to make it more efficent, please I want to know how.
thanks
| Code: |
/***************************************
MIKROELECTRONICA ADAPTED CODE FOR CCS C
****************************************/
#include <16F887.h>
#device ADC = 10
#FUSES XT,NOWDT,NOPROTECT,NOPUT
#use delay(clock=8000000)
#include <GLCD_ESP5.c> // Custom library for KS108 EasyPic5
#include <graphics.c>
int16 const ADC_THRESHOLD=900;
int16 xmin;
int16 ymin;
int16 ymax;
int16 xmax;
int16 get_X()
{
//Get X axis value DRIVEA = 1 DRIVEB =1
output_c(0b00000001);
set_adc_channel(0);
delay_ms(2);
return read_adc();
}
int16 get_Y()
{
//Get X axis value DRIVEA = 0 DRIVEB =1
output_c(0b00000010);
set_adc_channel(1);
delay_ms(2);
return read_adc();
}
char PressDetect() {
INT16 adc_rd;
char result;
// PRESS detecting DRIVEA = 0 DRIVEB = 0 read channel 1
output_c(0x00);
delay_us(3500);
set_adc_channel(1);
delay_ms(2);
adc_rd = read_adc();
result = (adc_rd > ADC_THRESHOLD);
//debouncing, repeat detecting after 2ms
delay_ms(2);
adc_rd = read_adc();
result = result & (adc_rd > ADC_THRESHOLD);
return result;
}
void calibrate_screen()
{
char msg []="TOCA ABAJO IZQUIERDA";
char msg2 []="TOCA SUPERIOR DERECHA";
glcd_text57(0,30,msg,1,ON);
glcd_pixel(0,63,ON);
while(!PressDetect());
xmin = get_X() - 10;
ymin = get_Y() - 10;
delay_ms(1000);
glcd_fillscreen(OFF);
glcd_text57(0,30,msg2,1,ON);
glcd_pixel(127,0,ON);
while(!PressDetect());
xmax = get_X() + 5 ;
ymax = get_Y() + 5 ;
delay_ms(1000);
}
void main()
{
char msg[] = "CLEAR";
int16 x_coord,y_coord;
int8 x,y;
glcd_init(ON);
SET_TRIS_C(0b00000100);
set_tris_b(0xff);
setup_adc_ports(sAN0 | sAN1);
setup_adc(ADC_CLOCK_INTERNAL);
calibrate_screen();
glcd_fillscreen(OFF);
glcd_rect(0,0,30,7,1,1); //Write Clear button
glcd_text57(0,0,msg,1,0);
while(1)
{
if(PressDetect())
{
y_coord = Get_Y() - ymin;
x_coord = Get_X() - xmin;
x = (int8) ((double) x_coord * 128 / (double)(xmax - xmin));
y = (64 -(y_coord << 6) / (ymax - ymin));
if(x >=0 && x <=30)
{
if(y>=0 && y <= 7)
{ //If clear button is pressed clear screen
glcd_fillscreen(OFF);
glcd_rect(0,0,30,7,1,1);
glcd_text57(0,0,msg,1,0);
delay_ms(100); // Delay for posible stack overflow
}else glcd_pixel(x,y,1);
}else glcd_pixel(x,y,1);
}
}
}
|
|
|
FAQ 
Search
Register
Profile 
Log in to check your private messages 
Log in
