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Tinyu
42 lines
1.4 KiB
Arduino
42 lines
1.4 KiB
Arduino
/*
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*******************************************************************************
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* Copyright (c) 2021 by M5Stack
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* Equipped with M5Core2 sample source code
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* 配套 M5Core2 示例源代码
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* Visit for more information: https://docs.m5stack.com/en/unit/core2
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* 获取更多资料请访问: https://docs.m5stack.com/zh_CN/unit/core2
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*
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* Product: CardKB. 键盘
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* Date: 2021/8/11
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*******************************************************************************
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Please connect to Port A,Read the characters entered by CardKB Unit and display them on the screen.
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请连接端口A,读取CardKB Unit输入的字符并显示在屏幕上。
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*/
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#include <M5Core2.h>
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#define CARDKB_ADDR \
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0x5F //Define the I2C address of CardKB. 定义CardKB的I2C地址
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void setup() {
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M5.begin(); //Init M5Core2. 初始化 M5Core2
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M5.lcd.setTextSize(2); //Set the text size to 2. 设置文字大小为2
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M5.Lcd.printf("IIC Address: 0x5F\n");
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M5.Lcd.printf(">>");
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Wire.begin();
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}
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void loop() {
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Wire.requestFrom(
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CARDKB_ADDR,
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1); //Request 1 byte from the slave device. 向从设备请求1字节
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while (Wire.available()) //If received data is detected. 如果检测到收到数据
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{
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char c = Wire.read(); // Store the received data. 将接收到的数据存储
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if (c != 0) {
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M5.Lcd.printf("%c", c);
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Serial.println(c, HEX);
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}
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}
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}
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