Arduino Quick Start
Tab5 Touch related APIs and example.
#include <M5Unified.h>#include <M5GFX.h> m5::touch_detail_t touchDetail;static int32_t w;static int32_t h; LGFX_Button button; void setup() { M5.begin(); w = M5.Lcd.width(); h = M5.Lcd.height(); M5.Lcd.fillScreen(WHITE); M5.Display.setRotation(0); M5.Display.setTextDatum(top_center); M5.Display.drawString("Button Released", w / 2, 0, &fonts::FreeMonoBold24pt7b); button.initButton(&M5.Lcd, w / 2, h / 2, 200, 200, TFT_BLUE, TFT_YELLOW, TFT_BLACK, "BTN", 4, 4); button.drawButton();} void loop() { M5.update(); touchDetail = M5.Touch.getDetail(); if (touchDetail.isPressed()) { if(button.contains(touchDetail.x, touchDetail.y)){ M5.Display.drawString("Button Pressed", w / 2, 0, &fonts::FreeMonoBold24pt7b); } } else { M5.Display.drawString("Button Released", w / 2, 0, &fonts::FreeMonoBold24pt7b); }}
The program's function is: when a finger touches the screen, if the touch point is within the button area, it displays "Button Pressed"; otherwise, it displays "Button Released".
The program only reads one touch point, and you can also develop the two-point touch function of Tab5 through the following API.
The Touch of the Tab5 uses the Touch_Class
from the M5Unified
library. For more related APIs, refer to the documentation below: