初始化提交

arduino-cli/libraries/M5Core2-master/examples/Unit/FADER/FADER.ino

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+/*
+*******************************************************************************
+* Copyright (c) 2021 by M5Stack
+*                  Equipped with M5Core2 sample source code
+*                          配套  M5Core2 示例源代码
+* Visit the website for more information: https://docs.m5stack.com/en/unit/fader
+* 获取更多资料请访问: https://docs.m5stack.com/zh_CN/unit/fader
+*
+* describe: UNIT FADER. 滑动电位器/推子
+* date: 2021/8/20
+*******************************************************************************
+  Connect UNIT FADER to port B and push the FADER slider to adjust the input value and light brightness
+  将UNIT FADER连接到B端口, 推动FADER滑杆即可实现调整输入数值大小与灯光亮度
+*/
+
+#include "M5Core2.h"
+#include "FastLED.h"
+
+// How many leds in your strip?
+#define NUM_LEDS 14
+#define INPUT_PINS 36
+
+#define DATA_PIN 26
+
+// Define the array of leds
+CRGB leds[NUM_LEDS];
+
+uint8_t beginHue = 0;
+uint8_t deltaHue = 30;
+uint8_t brightness = 100;
+uint16_t rawADC = 0;
+
+void setup()
+{
+  M5.begin();
+  M5.Lcd.setTextDatum(MC_DATUM);
+  M5.Lcd.drawString("FADER UNIT TEST", 160, 60, 4);
+  FastLED.addLeds<NEOPIXEL, DATA_PIN>(leds, NUM_LEDS);
+  delay(1000);
+  pinMode(36, INPUT);
+  fill_rainbow(leds, NUM_LEDS, beginHue, deltaHue); 
+}
+
+
+void loop()
+{
+  rawADC = analogRead(INPUT_PINS); //Read ADC value 读取ADC数值
+  brightness = map(rawADC, 0, 4095, 0, 255); //The mapping ADC value is the brightness value range  映射ADC值为亮度值范围
+  FastLED.setBrightness(brightness); //Adjust the brightness of the FADER LED 调整FADER LED灯亮度
+  FastLED.show();
+  Serial.printf("%d\r\n", rawADC);
+  M5.Lcd.fillRect(0, 120, 320, 100, BLACK);
+  M5.Lcd.drawString("value: "+String(rawADC), 160, 160, 4);
+  delay(100);
+}