/******************************************************************************* * 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 #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); }