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T-DeckLoader/.pio/libdeps/esp32s3box/GFX Library for Arduino/examples/TouchCalibration/TouchCalibration.ino
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2024-06-09 01:14:09 -04:00

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/*******************************************************************************
* Touch Calibration tool for helping other example touchscreen support
*
* For resistive touchscreen, you can follow the display hint for calibration.
* And then copy the serial output result to touch.h.
*
* For capacitive touchscreen, it should no need to calibrate.
* This tool just help you check the connection and orientation.
*
* Resistive touchscreen libraries
* XPT2046: https://github.com/PaulStoffregen/XPT2046_Touchscreen.git
*
* Capacitive touchscreen libraries
* TouchLib: https://github.com/mmMicky/TouchLib.git
******************************************************************************/
/*******************************************************************************
* Please config the touch panel in touch.h
******************************************************************************/
#include "touch.h"
/*******************************************************************************
* Start of Arduino_GFX setting
*
* Arduino_GFX try to find the settings depends on selected board in Arduino IDE
* Or you can define the display dev kit not in the board list
* Defalult pin list for non display dev kit:
* Arduino Nano, Micro and more: CS: 9, DC: 8, RST: 7, BL: 6, SCK: 13, MOSI: 11, MISO: 12
* ESP32 various dev board : CS: 5, DC: 27, RST: 33, BL: 22, SCK: 18, MOSI: 23, MISO: nil
* ESP32-C3 various dev board : CS: 7, DC: 2, RST: 1, BL: 3, SCK: 4, MOSI: 6, MISO: nil
* ESP32-S2 various dev board : CS: 34, DC: 38, RST: 33, BL: 21, SCK: 36, MOSI: 35, MISO: nil
* ESP32-S3 various dev board : CS: 40, DC: 41, RST: 42, BL: 48, SCK: 36, MOSI: 35, MISO: nil
* ESP8266 various dev board : CS: 15, DC: 4, RST: 2, BL: 5, SCK: 14, MOSI: 13, MISO: 12
* Raspberry Pi Pico dev board : CS: 17, DC: 27, RST: 26, BL: 28, SCK: 18, MOSI: 19, MISO: 16
* RTL8720 BW16 old patch core : CS: 18, DC: 17, RST: 2, BL: 23, SCK: 19, MOSI: 21, MISO: 20
* RTL8720_BW16 Official core : CS: 9, DC: 8, RST: 6, BL: 3, SCK: 10, MOSI: 12, MISO: 11
* RTL8722 dev board : CS: 18, DC: 17, RST: 22, BL: 23, SCK: 13, MOSI: 11, MISO: 12
* RTL8722_mini dev board : CS: 12, DC: 14, RST: 15, BL: 13, SCK: 11, MOSI: 9, MISO: 10
* Seeeduino XIAO dev board : CS: 3, DC: 2, RST: 1, BL: 0, SCK: 8, MOSI: 10, MISO: 9
* Teensy 4.1 dev board : CS: 39, DC: 41, RST: 40, BL: 22, SCK: 13, MOSI: 11, MISO: 12
******************************************************************************/
#include <Arduino_GFX_Library.h>
#define GFX_BL DF_GFX_BL // default backlight pin, you may replace DF_GFX_BL to actual backlight pin
/* More dev device declaration: https://github.com/moononournation/Arduino_GFX/wiki/Dev-Device-Declaration */
#if defined(DISPLAY_DEV_KIT)
Arduino_GFX *gfx = create_default_Arduino_GFX();
#else /* !defined(DISPLAY_DEV_KIT) */
/* More data bus class: https://github.com/moononournation/Arduino_GFX/wiki/Data-Bus-Class */
Arduino_DataBus *bus = create_default_Arduino_DataBus();
/* More display class: https://github.com/moononournation/Arduino_GFX/wiki/Display-Class */
Arduino_GFX *gfx = new Arduino_ILI9341(bus, DF_GFX_RST, 0 /* rotation */, false /* IPS */);
#endif /* !defined(DISPLAY_DEV_KIT) */
/*******************************************************************************
* End of Arduino_GFX setting
******************************************************************************/
int16_t w = -1, h = -1;
int16_t point_x[4] = {-1};
int16_t point_y[4] = {-1};
int16_t current_point = -1, next_point = 0;
int16_t touched_x[4] = {-1};
int16_t touched_y[4] = {-1};
void setup(void)
{
Serial.begin(115200);
// Serial.setDebugOutput(true);
// while(!Serial);
Serial.println("Arduino_GFX Touch Calibration example");
#ifdef GFX_EXTRA_PRE_INIT
GFX_EXTRA_PRE_INIT();
#endif
Serial.println("Init display");
// Init Display
if (!gfx->begin())
{
Serial.println("gfx->begin() failed!");
}
gfx->fillScreen(BLACK);
#ifdef GFX_BL
pinMode(GFX_BL, OUTPUT);
digitalWrite(GFX_BL, HIGH);
#endif
// Init touch device
w = gfx->width();
h = gfx->height();
touch_init(w, h, gfx->getRotation());
// Top left
point_x[0] = w / 8;
point_y[0] = h / 8;
// Top right
point_x[1] = point_x[0] * 7;
point_y[1] = point_y[0];
// Bottom left
point_x[2] = point_x[0];
point_y[2] = point_y[0] * 7;
// Bottom right
point_x[3] = point_x[1];
point_y[3] = point_y[2];
gfx->setCursor(0, 0);
gfx->setTextColor(RED);
gfx->setTextSize(2);
gfx->println("Touch Calibration");
}
void loop()
{
if (current_point != next_point)
{
current_point = next_point;
gfx->drawLine(
point_x[current_point] - 5,
point_y[current_point] - 5,
point_x[current_point] + 5,
point_y[current_point] + 5,
RED);
gfx->drawLine(
point_x[current_point] + 5,
point_y[current_point] - 5,
point_x[current_point] - 5,
point_y[current_point] + 5,
RED);
}
if (touch_touched())
{
int32_t total_x = touch_raw_x, total_y = touch_raw_y;
int count = 1;
while (touch_touched())
{
total_x += touch_raw_x;
total_y += touch_raw_y;
count++;
// Serial.printf("touch_raw_x: %d, touch_raw_y: %d, count: %d\n", touch_raw_x, touch_raw_y, count);
}
touched_x[current_point] = total_x / count;
touched_y[current_point] = total_y / count;
// Serial.printf("touched_x: %d, touched_y: %d\n", touched_x[current_point], touched_y[current_point]);
if (current_point == 3)
{
Serial.printf("touched_x[0]: %d, touched_y[0]: %d\n", touched_x[0], touched_y[0]);
Serial.printf("touched_x[1]: %d, touched_y[1]: %d\n", touched_x[1], touched_y[1]);
Serial.printf("touched_x[2]: %d, touched_y[2]: %d\n", touched_x[2], touched_y[2]);
Serial.printf("touched_x[3]: %d, touched_y[3]: %d\n", touched_x[3], touched_y[3]);
uint16_t delta_x = (touched_x[0] > touched_x[1]) ? (touched_x[0] - touched_x[1]) : (touched_x[1] - touched_x[0]);
uint16_t delta_y = (touched_y[0] > touched_y[1]) ? (touched_y[0] - touched_y[1]) : (touched_y[1] - touched_y[0]);
if (delta_x > delta_y)
{
touch_swap_xy = false;
touch_map_x1 = (touched_x[0] + touched_x[2]) / 2;
touch_map_x2 = (touched_x[1] + touched_x[3]) / 2;
touch_map_y1 = (touched_y[0] + touched_y[1]) / 2;
touch_map_y2 = (touched_y[2] + touched_y[3]) / 2;
}
else
{
touch_swap_xy = true;
touch_map_x1 = (touched_y[0] + touched_y[2]) / 2;
touch_map_x2 = (touched_y[1] + touched_y[3]) / 2;
touch_map_y1 = (touched_x[0] + touched_x[1]) / 2;
touch_map_y2 = (touched_x[2] + touched_x[3]) / 2;
}
if (touch_map_x1 > touch_map_x2)
{
delta_x = (touch_map_x1 - touch_map_x2) / 6;
touch_map_x1 += delta_x;
touch_map_x2 -= delta_x;
}
else
{
delta_x = (touch_map_x2 - touch_map_x1) / 6;
touch_map_x1 -= delta_x;
touch_map_x2 += delta_x;
}
if (touch_map_y1 > touch_map_y2)
{
delta_y = (touch_map_y1 - touch_map_y2) / 6;
touch_map_y1 += delta_y;
touch_map_y2 -= delta_y;
}
else
{
delta_y = (touch_map_y2 - touch_map_y1) / 6;
touch_map_y1 -= delta_y;
touch_map_y2 += delta_y;
}
Serial.printf("bool touch_swap_xy = %s;\n", touch_swap_xy ? "true" : "false");
Serial.printf("int16_t touch_map_x1 = %d;\n", touch_map_x1);
Serial.printf("int16_t touch_map_x2 = %d;\n", touch_map_x2);
Serial.printf("int16_t touch_map_y1 = %d;\n", touch_map_y1);
Serial.printf("int16_t touch_map_y2 = %d;\n", touch_map_y2);
gfx->setCursor(0, point_y[0] + 10);
gfx->setTextColor(WHITE);
gfx->setTextSize(1);
gfx->printf("bool touch_swap_xy = %s;\n", touch_swap_xy ? "true" : "false");
gfx->printf("int16_t touch_map_x1 = %d;\n", touch_map_x1);
gfx->printf("int16_t touch_map_x2 = %d;\n", touch_map_x2);
gfx->printf("int16_t touch_map_y1 = %d;\n", touch_map_y1);
gfx->printf("int16_t touch_map_y2 = %d;\n", touch_map_y2);
// wait next touch to continue
while (!touch_touched())
;
gfx->fillScreen(BLACK);
gfx->setCursor(0, 0);
gfx->setTextColor(RED);
gfx->setTextSize(2);
gfx->println("Touch Calibration");
}
next_point = (current_point == 3) ? 0 : (current_point + 1);
}
delay(100);
}
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