mirror of
https://github.com/m5stack/M5Stack.git
synced 2026-05-20 10:06:46 -07:00
Tinyu
40 lines
1.4 KiB
Arduino
40 lines
1.4 KiB
Arduino
/*
|
||
*******************************************************************************
|
||
* Copyright (c) 2021 by M5Stack
|
||
* Equipped with M5Core sample source code
|
||
* 配套 M5Core 示例源代码
|
||
* Visit the website for more information：https://docs.m5stack.com/en/core/gray
|
||
* 获取更多资料请访问：https://docs.m5stack.com/zh_CN/core/gray
|
||
*
|
||
* describe：CardKB. 键盘
|
||
* date：2021/8/11
|
||
*******************************************************************************
|
||
Please connect to Port A(22、21),Read the characters entered by CardKB Unit and display them on the screen.
|
||
请连接端口A(22、21),读取CardKB Unit输入的字符并显示在屏幕上。
|
||
*/
|
||
|
||
#include <M5Stack.h>
|
||
#define CARDKB_ADDR 0x5F //Define the I2C address of CardKB. 定义CardKB的I2C地址
|
||
|
||
void setup()
|
||
{
|
||
M5.begin(); //Init M5Stack. 初始化M5Stack
|
||
M5.Power.begin(); //Init power 初始化电源模块
|
||
M5.lcd.setTextSize(2); //Set the text size to 2. 设置文字大小为2
|
||
M5.Lcd.printf("CardKB Test\n");
|
||
M5.Lcd.printf(">>");
|
||
}
|
||
void loop()
|
||
{
|
||
Wire.requestFrom(CARDKB_ADDR, 1); //Request 1 byte from the slave device. 向从设备请求1字节
|
||
while(Wire.available()) //If received data is detected. 如果检测到收到数据
|
||
{
|
||
char c = Wire.read(); // Store the received data. 将接收到的数据存储
|
||
if (c != 0)
|
||
{
|
||
M5.Lcd.printf("%c", c);
|
||
Serial.println(c, HEX);
|
||
}
|
||
}
|
||
}
|