连接2x2矩阵键盘led数码管c语言代码
时间: 2023-10-17 12:03:11 浏览: 56
连接2x2矩阵键盘和LED数码管的C语言代码如下:
```c
#include <Keypad.h>
#include <TM1637Display.h>
// Define the 2x2 matrix keypad
const byte ROW_NUM = 2; // two rows
const byte COLUMN_NUM = 2; // two columns
// Define the matrix keypad pins
byte pin_rows[ROW_NUM] = {2, 3}; // connect to the row pinouts of the keypad
byte pin_column[COLUMN_NUM] = {4, 5}; // connect to the column pinouts of the keypad
// Define the LED Display pins
const byte CLK = 6;
const byte DIO = 7;
// Initialize the keypad and LED Display instances
Keypad keypad = Keypad(makeKeymap(keymap), pin_rows, pin_column, ROW_NUM, COLUMN_NUM);
TM1637Display display(CLK, DIO);
void setup() {
display.setBrightness(7); // Set the brightness of the LED Display
}
void loop() {
char key = keypad.getKey(); // Get the key pressed on the keypad
if (key) {
display.showNumberDec(key); // Display the number on the LED Display
delay(1000); // Display the number for 1 second
display.clear(); // Clear the LED Display
}
}
```
此代码使用了Keypad库和TM1637库,通过矩阵键盘获取按键输入,并将按键输入显示在LED数码管上。