Já adaptei um exemplo em um projeto que fiz.
Em CCS o codigo adcon1seria como você colocar desta forma setup_adc_ports( A0 A1);Esta em MIKROC porem é facilmente adaptavel.
// * Project Name:
// TouchPanel (Demo for working with TouchPanel Controller)
// * Target Platform:
// PIC
// * Copyright:
// (c) mikroElektronika, 2007.
// * Revision History:
// 20071225:
// - Initial release.
// * Description:
// this code in intended to work with TouchPanel and GLCD
// Target devices are PIC16 and PIC18 family MCU's, any speed.
// * Test configuration:
// MCU: PIC18F4520
// Dev.Board: EasyPic5
// Oscillator: HS, 8.000MHz
// Ext. Modules: TouchPanel, GLCD
// SW: mikroC v8.0
// * NOTES:
// - Turn off PORTA LEDs, 7Seg Display Switches, ADC jumpers and PORTA pull-up/down resistors.
// - Turn on GLCD backlight and TouchPanel Contoller switches on EasyPIC5 board.
char write_erase, pen_size;
unsigned int x_coord, y_coord;
long x_coord128, y_coord64; // scaled x-y position
int cal_x_min, cal_y_min, cal_x_max, cal_y_max; // calibration constants
char write_msg[] = "WRITE"; // GLCD menu messages
char clear_msg[] = "CLEAR";
char erase_msg[] = "ERASE";
const unsigned int ADC_THRESHOLD = 900; // Threshold value for press detecting
// returns 1 if TouchPanel is pressed, 0 otherwise
char PressDetect() {
unsigned adc_rd;
char result;
// PRESS detecting
PORTC.F0 = 0; // DRIVEA = 0 (LEFT drive off, RIGHT drive off, TOP drive on)
PORTC.F1 = 0; // DRIVEB = 0 (BOTTOM drive off)
Delay_us(3500);
adc_rd = ADC_read(1); // Read RA1 (READ-Y)
result = (adc_rd > ADC_THRESHOLD); // if logical one is detectet
//debouncing, repeat detecting after 2ms
Delay_ms(2);
adc_rd = ADC_read(1);
result = result & (adc_rd > ADC_THRESHOLD);
return result;
}
unsigned int GetX() {
unsigned int result;
//reading X
PORTC.F0 = 1; // DRIVEA = 1 (LEFT drive on, RIGHT drive on, TOP drive off)
PORTC.F1 = 0; // DRIVEB = 0 (BOTTOM drive off)
Delay_ms(5);
result = ADC_read(0); // reading X value from RA0 (BOTTOM)
return result;
}
unsigned int GetY() {
unsigned int result;
//reading Y
PORTC.F0 = 0; // DRIVEA = 0 (LEFT drive off, RIGHT drive off, TOP drive on)
PORTC.F1 = 1; // DRIVEB = 1 (BOTTOM drive on)
Delay_ms(5);
result = ADC_read(1); // reading Y value from RA1 (from LEFT)
return result;
}
void Calibrate() {
Glcd_Dot(0,63,1);
Glcd_Write_Text("TOUCH BOTTOM LEFT",10,3,1);
while (!PressDetect());
// get calibration constants (reading and compensating TouchPanel nonlinearity)
cal_x_min = GetX() - 10;
cal_y_min = GetY() - 10;
Delay_ms(1000);
Glcd_Fill(0);
Glcd_Dot(127,0,1);
Glcd_Write_Text("TOUCH UPPER RIGHT",10,4,1);
while (!PressDetect()) ;
// get calibration constants (reading and compensating TouchPanel nonlinearity)
cal_x_max = GetX() + 5;
cal_y_max = GetY() + 5;
Delay_ms(1000);
}
void main() {
ADCON1 = 0x0F;
PORTA = 0x00;
TRISA = 0x03; // RA0 i RA1 are analog inputs
PORTC = 0 ;
TRISC = 0 ; // PORTC is output
Glcd_Init(&PORTB, 0, 1, 2, 3, 5, 4, &PORTD); // Glcd_Init_EP5, see Autocomplete
Glcd_Fill(0);
Glcd_Set_Font(FontSystem5x8, 5, 8, 32);
Glcd_Write_Text("CALIBRATION", 24, 3, 1);
Delay_ms(1500);
Glcd_Fill(0);
Calibrate();
Glcd_Fill(0);
Glcd_Write_Text("WRITE ON SCREEN", 24, 4, 1) ;
Delay_ms(1000);
Glcd_Fill(0);
Glcd_Fill(0);
Glcd_V_Line(0,7,0,1);
Glcd_Write_Text(clear_msg,1,0,0);
Glcd_V_Line(0,7,97,1);
Glcd_Write_Text(erase_msg,98,0,0);
//Pen Menu:
Glcd_Rectangle(41,0,52,9,1);
Glcd_Box(45,3,48,6,1);
Glcd_Rectangle(63,0,70,7,1);
Glcd_Box(66,3,67,4,1);
Glcd_Rectangle(80,0,86,6,1);
Glcd_Dot(83,3,1);
write_erase = 1;
pen_size = 1;
while (1) {
if (PressDetect()) {
// after a PRESS is detected read X-Y and convert it to 128x64 space
x_coord = GetX() - cal_x_min;
y_coord = GetY() - cal_y_min;
x_coord128 = (x_coord * 128l) / (cal_x_max - cal_x_min);
y_coord64 = (64 -(y_coord *64) / (cal_y_max - cal_y_min));
if ((x_coord128 < 0) || (x_coord128 > 127))
continue;
if ((y_coord64 < 0) || (y_coord64 > 63))
continue;
//if clear is pressed
if ((x_coord128 < 31) && (y_coord64 < 8)) {
Glcd_Fill(0);
//Pen Menu:
Glcd_Rectangle(41,0,52,9,1);
Glcd_Box(45,3,48,6,1);
Glcd_Rectangle(63,0,70,7,1);
Glcd_Box(66,3,67,4,1);
Glcd_Rectangle(80,0,86,6,1);
Glcd_Dot(83,3,1);
Glcd_V_Line(0,7,0,1);
Glcd_Write_Text(clear_msg,1,0,0);
Glcd_V_Line(0,7,97,1);
if (write_erase)
Glcd_Write_Text(erase_msg,98,0,0);
else
Glcd_Write_Text(write_msg,98,0,0);
}
//if write/erase is pressed
if ((x_coord128 > 96) && (y_coord64 < 8)) {
if (write_erase) {
write_erase = 0;
Glcd_Write_Text(write_msg,98,0,0);
Delay_ms(500);
}
else {
write_erase = 1;
Glcd_Write_Text(erase_msg,98,0,0);
Delay_ms(500);
}
}
//if pen size is selected
if ((x_coord128 >= 41) && (x_coord128 <= 52) && (y_coord64 <= 9))
pen_size = 3;
if ((x_coord128 >= 63) && (x_coord128 <= 70) && (y_coord64 <= 7))
pen_size = 2;
if ((x_coord128 >= 80) && (x_coord128 <= 86) && (y_coord64 <= 6))
pen_size = 1;
if (y_coord64 < 11)
continue;
switch (pen_size) {
case 1 : Glcd_Dot(x_coord128, y_coord64, write_erase); break;
case 2 : Glcd_Box(x_coord128, y_coord64, x_coord128 + 1, y_coord64 + 1, write_erase); break;
case 3 : Glcd_Box(x_coord128-1, y_coord64-1, x_coord128 + 2, y_coord64 + 2, write_erase); break;
}
}
}
}
Abraços
Ivan
