4*4矩阵键盘驱动实例 - 四博智联产品售后

#include <Keypad.h>
const byte ROWS = 4; //四行
const byte COLS = 4; //四列
//定义对键盘的按钮中的符号
char hexaKeys[ROWS][COLS] = {
{'1','2','3','A'},
{'4','5','6','B'},
{'7','8','9','C'},
{'*','0','#','D'}
};
byte rowPins[ROWS] = {0, 2, 4, 5}; //连接到键盘的排管脚
byte colPins[COLS] = {12, 13, 14, 16}; //连接到键盘的柱插脚引线
//初始化类NewKeypad的一个实例
Keypad customKeypad = Keypad( makeKeymap(hexaKeys), rowPins, colPins, ROWS, COLS);
void setup()
{
Serial.begin(9600);
}
void loop()
{
char customKey = customKeypad.getKey();
if (customKey)
{
Serial.println(customKey);
}
}

复制代码