update the tft lib

src/M5Stack.cpp

@@ -0,0 +1,75 @@
+// Copyright (c) M5Stack. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+#include "M5Stack.h"
+
+void M5Stack::begin() {
+    
+    // UART 
+    Serial.begin(115200);
+    Serial.flush();
+    Serial.println("M5Stack init...");
+
+    // TONE
+    Speaker.begin();
+
+    // Setup the button with an internal pull-up
+    pinMode(BUTTON_A_PIN, INPUT_PULLUP);
+    pinMode(BUTTON_B_PIN, INPUT_PULLUP);
+    pinMode(BUTTON_C_PIN, INPUT_PULLUP);
+
+    // TF Card
+    SD.begin(TFCARD_CS_PIN);
+
+    // M5 LCD INIT
+    Lcd.begin();
+    Lcd.fillScreen(BLACK);
+    Lcd.setCursor(0, 0);
+    Lcd.setTextColor(WHITE);
+    Lcd.setTextSize(1);
+    Lcd.setBrightness(50);
+}
+
+void M5Stack::update() {
+
+    //Button update
+    BtnA.read();
+    BtnB.read();
+    BtnC.read();
+
+    //Speaker update
+    Speaker.update();
+}
+
+void M5Stack::startupLogo() {
+    static uint8_t brightness, pre_brightness;
+    uint32_t length = strlen((char*)m5stack_startup_music);
+    Lcd.setBrightness(0);
+    Lcd.drawBitmap(0, 0, 320, 240, (uint16_t *)gImage_logoM5);
+    for(int i=0; i<length; i++) {
+        dacWrite(SPEAKER_PIN, m5stack_startup_music[i]>>2);
+        delayMicroseconds(40);
+        brightness = (i/157);
+        if(pre_brightness != brightness) {
+            pre_brightness = brightness;
+            Lcd.setBrightness(brightness);
+        }
+    }
+
+    for(int i=255; i>=0; i--) {
+        lcd.setBrightness(i);
+        if(i<=32) {
+            dacWrite(SPEAKER_PIN, i);
+        }
+        delay(2);
+    }
+
+    Lcd.fillScreen(BLACK);
+    delay(800);
+    for(int i=0; i>=100; i++) {
+        Lcd.setBrightness(i);
+        delay(2);
+    }
+}
+
+M5Stack m5stack;