And here is an example that uses Buttons:
phonecal_XPT2046.ino
#include <Adafruit_GFX.h> // Core graphics library
#include <HX8347D_kbv.h> // Hardware-specific library
#include <XPT2046_Touchscreen.h> // define pins, calibration, getPoint() is different
//edit begin() method in XPT2046_Touchscreen.cpp source code :
// attachInterrupt( digitalPinToInterrupt(tirqPin), isrPin, FALLING ); //.kbv
#define XPT_CS 4
#define XPT_IRQ 255 //use 3 if you fix interrupts in library source code
#define TS_LEFT 3900 //The XPT2046_Touchscreen works in Landscape
#define TS_RT 300 //I would expect Touch in Portrait
#define TS_TOP 360
#define TS_BOT 3800
HX8347D_kbv tft;
XPT2046_Touchscreen ts(XPT_CS, XPT_IRQ);
Adafruit_GFX_Button buttons[15];
// Color definitions
#define TFT_BLACK 0x0000 /* 0, 0, 0 */
#define TFT_NAVY 0x000F /* 0, 0, 128 */
#define TFT_DARKGREEN 0x03E0 /* 0, 128, 0 */
#define TFT_DARKCYAN 0x03EF /* 0, 128, 128 */
#define TFT_MAROON 0x7800 /* 128, 0, 0 */
#define TFT_PURPLE 0x780F /* 128, 0, 128 */
#define TFT_OLIVE 0x7BE0 /* 128, 128, 0 */
#define TFT_LIGHTGREY 0xC618 /* 192, 192, 192 */
#define TFT_DARKGREY 0x7BEF /* 128, 128, 128 */
#define TFT_BLUE 0x001F /* 0, 0, 255 */
#define TFT_GREEN 0x07E0 /* 0, 255, 0 */
#define TFT_CYAN 0x07FF /* 0, 255, 255 */
#define TFT_RED 0xF800 /* 255, 0, 0 */
#define TFT_MAGENTA 0xF81F /* 255, 0, 255 */
#define TFT_YELLOW 0xFFE0 /* 255, 255, 0 */
#define TFT_WHITE 0xFFFF /* 255, 255, 255 */
#define TFT_ORANGE 0xFD20 /* 255, 165, 0 */
#define TFT_GREENYELLOW 0xAFE5 /* 173, 255, 47 */
#define TFT_PINK 0xF81F
/******************* UI details */
#define BUTTON_X 40
#define BUTTON_Y 100
#define BUTTON_W 60
#define BUTTON_H 30
#define BUTTON_SPACING_X 20
#define BUTTON_SPACING_Y 20
#define BUTTON_TEXTSIZE 2
// text box where numbers go
#define TEXT_X 10
#define TEXT_Y 10
#define TEXT_W 220
#define TEXT_H 50
#define TEXT_TSIZE 3
#define TEXT_TCOLOR TFT_MAGENTA
// the data (phone #) we store in the textfield
#define TEXT_LEN 12
char textfield[TEXT_LEN + 1] = "";
uint8_t textfield_i = 0;
// We have a status line for like, is FONA working
#define STATUS_X 10
#define STATUS_Y 65
/* create 15 buttons, in classic candybar phone style */
char buttonlabels[15][5] = {
"Send", "Clr", "End", "1", "2", "3", "4", "5", "6", "7", "8", "9", "*", "0", "#"
};
uint16_t buttoncolors[15] = {
TFT_DARKGREEN, TFT_DARKGREY, TFT_RED,
TFT_BLUE, TFT_BLUE, TFT_BLUE,
TFT_BLUE, TFT_BLUE, TFT_BLUE,
TFT_BLUE, TFT_BLUE, TFT_BLUE,
TFT_ORANGE, TFT_BLUE, TFT_ORANGE
};
void setup(void)
{
Serial.begin(9600);
Serial.println(F("TFT LCD test"));
uint16_t ID = tft.readID();
tft.begin(ID);
tft.fillScreen(TFT_BLACK);
ts.begin(); //.kbv XPT2046_Touchscreen needs to start
// create buttons
for (uint8_t row = 0; row < 5; row++) {
for (uint8_t col = 0; col < 3; col++) {
uint8_t n = col + row * 3;
// &gfx, x, y, w, h, outline, fill, text, textsize
buttons[n].initButton(&tft, BUTTON_X + col * (BUTTON_W + BUTTON_SPACING_X),
BUTTON_Y + row * (BUTTON_H + BUTTON_SPACING_Y),
BUTTON_W, BUTTON_H, TFT_WHITE, buttoncolors[n], TFT_WHITE,
buttonlabels[n], BUTTON_TEXTSIZE);
buttons[n].drawButton();
}
}
// create 'text field'
tft.drawRect(TEXT_X, TEXT_Y, TEXT_W, TEXT_H, TFT_WHITE);
}
// Print something in the mini status bar with either flashstring
void status(const __FlashStringHelper *msg)
{
tft.fillRect(STATUS_X, STATUS_Y, 240, 8, TFT_BLACK);
tft.setCursor(STATUS_X, STATUS_Y);
tft.setTextColor(TFT_WHITE);
tft.setTextSize(1);
tft.print(msg);
}
// or charstring
void status(char *msg)
{
tft.fillRect(STATUS_X, STATUS_Y, 240, 8, TFT_BLACK);
tft.setCursor(STATUS_X, STATUS_Y);
tft.setTextColor(TFT_WHITE);
tft.setTextSize(1);
tft.print(msg);
}
void loop(void)
{
int x = -1, y = -1; //regular pixel coordinates
if (ts.touched()) { //XPT2046_Touchscreen can use hardware
TS_Point p = ts.getPoint(); //XPT_2046_touchscreen returns in Landscape
x = map(p.y, TS_BOT, TS_TOP, 0, tft.width());
y = map(p.x, TS_LEFT, TS_RT, 0, tft.height());
}
// go thru all the buttons, checking if they were pressed
for (uint8_t b = 0; b < 15; b++) {
bool down = buttons[b].contains(x, y);
buttons[b].press(down);
}
// now we can ask the buttons if their state has changed
for (uint8_t b = 0; b < 15; b++) {
if (buttons[b].justReleased()) {
// Serial.print("Released: "); Serial.println(b);
buttons[b].drawButton(); // draw normal
}
if (buttons[b].justPressed()) {
buttons[b].drawButton(true); // draw invert!
// if a numberpad button, append the relevant # to the textfield
if (b >= 3) {
if (textfield_i < TEXT_LEN) {
textfield[textfield_i] = buttonlabels[b][0];
textfield_i++;
textfield[textfield_i] = 0; // zero terminate
// fona.playDTMF(buttonlabels[b][0]);
}
}
// clr button! delete char
if (b == 1) {
textfield[textfield_i] = 0;
if (textfield > 0) {
textfield_i--;
textfield[textfield_i] = ' ';
}
}
// update the current text field
Serial.println(textfield);
tft.setCursor(TEXT_X + 2, TEXT_Y + 10);
tft.setTextColor(TEXT_TCOLOR, TFT_BLACK);
tft.setTextSize(TEXT_TSIZE);
tft.print(textfield);
// its always OK to just hang up
if (b == 2) {
status(F("Hanging up"));
Serial.println("Hanging up");
delay(1000);
tft.fillRect(TEXT_X + 1, TEXT_Y + 1, TEXT_W - 2, TEXT_H - 2, TFT_BLACK);
textfield_i = 0;
}
// we dont really check that the text field makes sense
// just try to call
if (b == 0) {
status(F("Calling"));
Serial.print("Calling "); Serial.println(textfield);
//fona.callPhone(textfield);
}
delay(100); // UI debouncing
}
}
}
David.
