Arduino Quick Start
2. Devices & Examples
3. M5Unified
4. M5GFX
5. Extensions
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Accessories
Tough Touch Screen
Tough touch screen related APIs and example programs.
Example Program
Build Requirements
- M5Stack Board Manager version >= 2.1.4
- Board selection = M5Tough
- M5Unified library version >= 0.2.5
- M5GFX library version >= 0.2.7
cpp
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#include <M5Unified.h> #include <M5GFX.h> m5::touch_detail_t touchDetail; int width, height; void setup() { M5.begin(); M5.Display.setRotation(1); M5.Display.setFont(&fonts::DejaVu40); width = M5.Display.width(); height = M5.Display.height(); Serial.begin(115200); Serial.println("Start touching!"); M5.Display.print("Start touching!"); } void loop() { M5.update(); touchDetail = M5.Touch.getDetail(); if (touchDetail.isPressed()) { Serial.printf("x:%d, y:%d\r\n", touchDetail.x, touchDetail.y); for (int i = 0; i < width; i += 10) { for (int j = 0; j < height; j += 10) { uint8_t cr = map((touchDetail.x - i) % width, 0, width, 0, 256); uint8_t cg = map((touchDetail.y - j) % height, 0, height, 0, 256); uint16_t color = M5.Display.color565(cr, cg, 255 - (cr + cg) / 2); M5.Display.fillRect(i, j, 10, 10, color); } } } }The main function of this program is to output the coordinates of the touch point to the computer via serial when the screen is touched by a finger. A colorful array on the screen follows the touch point as it moves. The program only reads a single touch point, but you can develop two-point touch functionality on Tough using the API introduced below.
API
The Tough touch screen functionality uses the Touch_Class from the M5Unified library. For more related APIs, please refer to the following documentation: