详细解释一下这段代码void scanfKey() { if(digitalRead(KEY1) == HIGH) { delay(20); if(digitalRead(KEY1) == HIGH) { if(ledFlag == 0) { ledFlag = 1; //digitalWrite(LED,HIGH); openLED(); }else{ ledFlag = 0; //digitalWrite(LED,LOW); closeLED(); } while(digitalRead(KEY1) == HIGH);//等待松开按键 } } if(digitalRead(KEY2) == LOW) { delay(20); if(digitalRead(KEY2) == LOW) { //驱动步进电机 if(clFlag = 1) { clFlag = 0;//禁止再次驱动步进电机 setAngle1(60); } while(digitalRead(KEY2) == LOW);//等待松开按键 } } }
时间: 2023-06-08 11:03:36 浏览: 52
这段代码是一个函数,是用来读取按键状态并执行一些相应操作的。首先,函数会检测 KEY1 是否被按下,如果是的话,会执行 LED 开启或关闭的操作;其次,函数会检测 KEY2 是否被按下,如果是的话,会驱动步进电机转动一个特定角度。代码中包含一些延时和等待松开按键的逻辑,以保证按键操作的正确性。
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帮我更加完善下面程序适合arduino1.5.2运行。#include"LedControl.h" LedControl lc=LedControl(13,11,12,1); byte d[8]={ B00001000, B00000100, B00000010, B11111111, B11111111, B00000010, B00000100, B00001000,}; byte h[8]={ B00010000, B00100000, B01000000, B11111111, B11111111, B01000000, B00100000, B00010000,}; int k1=0; int k2=0; int keypin1=10; int keypin2=3; int redpin = 4; int yellowpin = 5; int greenpin = 6; int redpin2 = 7; int yellowpin2 = 8; int greenpin2 = 9; void setup() { lc.shutdown(0,false); lc.setIntensity(0,3); lc.clearDisplay(0); pinMode(keypin1,INPUT); pinMode(keypin2,INPUT); pinMode(redpin,OUTPUT); pinMode(yellowpin,OUTPUT); pinMode(greenpin,OUTPUT); pinMode(redpin2,OUTPUT); pinMode(yellowpin2,OUTPUT); pinMode(greenpin2,OUTPUT); } void loop() { k2=digitalRead(keypin2); if(k2==LOW) { k1=digitalRead(keypin1); if(k1==LOW) { lc.clearDisplay(0); for(int row=0;row<8;row++) lc.setRow(0,row,h[row]); digitalWrite(redpin,HIGH); digitalWrite(greenpin2,HIGH); delay(7000); digitalWrite(redpin,LOW); digitalWrite(yellowpin,HIGH); delay(500); digitalWrite(yellowpin,LOW); delay(500); digitalWrite(yellowpin,HIGH); delay(500); digitalWrite(yellowpin,LOW); delay(500); digitalWrite(yellowpin,HIGH); delay(500); digitalWrite(yellowpin,LOW); delay(500); lc.clearDisplay(0); for(int row=0;row<8;row++) lc.setRow(0,row,d[row]); digitalWrite(greenpin2,LOW); digitalWrite(greenpin,HIGH); digitalWrite(redpin,LOW); digitalWrite(redpin2,HIGH); digitalWrite(yellowpin,LOW); delay(7000); digitalWrite(redpin2,LOW); digitalWrite(yellowpin2,HIGH); delay(500); digitalWrite(yellowpin2,LOW); delay(500); digitalWrite(yellowpin2,HIGH); delay(500); digitalWrite(yellowpin2,LOW); delay(500); digitalWrite(yellowpin2,HIGH); delay(500); digitalWrite(yellowpin2,LOW); delay(500); digitalWrite(yellowpin2,LOW); digitalWrite(greenpin,LOW); } else if(k1==HIGH) { lc.clearDisplay(0); for(int row=0;row<8;row++) lc.setRow(0,row,h[row]); digitalWrite(redpin,HIGH); digitalWrite(greenpin2,HIGH); delay(15000); digitalWrite(redpin,LOW); digitalWrite(yellowpin,HIGH); delay(500); digitalWrite(yellowpin,LOW); delay(500); digitalWrite(yellowpin,HIGH); delay(500); digitalWrite(yellowpin,LOW); delay(500); digitalWrite(yellowpin,HIGH); delay(500); digitalWrite(yellowpin,LOW); delay(500); lc.clearDisplay(0); for(int row=0;row<8;row++) lc.setRow(0,row,d[row]); digitalWrite(greenpin2,LOW); digitalWrite(greenpin,HIGH); digitalWrite(redpin,LOW); digitalWrite(redpin2,HIGH); digitalWrite(yellowpin,LOW); delay(15000); digitalWrite(redpin2,LOW); digitalWrite(yellowpin2,HIGH); delay(500); digitalWrite(yellowpin2,LOW); delay(500); digitalWrite(yellowpin2,HIGH); delay(500); digitalWrite(yellowpin2,LOW); delay(500); digitalWrite(yellowpin2,HIGH); delay(500); digitalWrite(yellowpin2,LOW); delay(500); digitalWrite(yellowpin2,LOW); digitalWrite(greenpin,LOW); } } else if(k2==HIGH) digitalWrite(redpin,HIGH); digitalWrite(redpin2,HIGH); delay(5000); digitalWrite(redpin,LOW); digitalWrite(redpin2,LOW); }
这段代码看起来没有明显的语法错误,但是有些地方可以进行改进和优化。以下是我提出的一些建议:
1. 在定义变量时,尽可能使用更具描述性的名称。例如,可以将“k1”和“k2”改为“button1State”和“button2State”,更好地表达它们所代表的含义。
2. 在控制LED矩阵时,可以使用循环来简化代码。例如,可以将以下代码:
for(int row=0;row<8;row++)
lc.setRow(0,row,h[row]);
改为:
for(int i=0; i<8; i++)
lc.setRow(0, i, h[i]);
这样可以避免重复代码,也更容易理解。
3. 在使用延迟函数时,应该注意到它会阻塞程序的执行。如果在程序中存在其他任务需要同时执行,那么使用延迟函数会导致这些任务无法及时处理。可以考虑使用计时器或者状态机等技术来替代延迟函数。
4. 在使用数字和布尔值时,应该使用相应的常量来代替魔法数字或者硬编码的布尔值。例如,可以将“LOW”改为“LOW_LEVEL”或者“0”,将“HIGH”改为“HIGH_LEVEL”或者“1”。这样可以提高代码的可读性和可维护性。
5. 最后,要注意缩进和代码格式的统一性,这样有助于提高代码的可读性和美观程度。
按下KEY0后,LED0亮度由亮变暗再由暗变亮(呼吸灯效果);按下KEY1后灯熄灭的函数代码如何编写?
以下是按下KEY0后,LED0呼吸灯效果的函数代码:
```c
#include <stdio.h>
#include <wiringPi.h>
#define LED_PIN 0
#define KEY_PIN 1
void breathLED() {
int brightness = 0;
int fadeAmount = 5;
while (1) {
analogWrite(LED_PIN, brightness);
brightness += fadeAmount;
if (brightness == 0 || brightness == 255) {
fadeAmount = -fadeAmount;
}
delay(30);
if (digitalRead(KEY_PIN) == LOW) {
break;
}
}
}
void turnOffLED() {
digitalWrite(LED_PIN, LOW);
}
int main() {
wiringPiSetup();
pinMode(LED_PIN, PWM_OUTPUT);
pinMode(KEY_PIN, INPUT);
while (1) {
if (digitalRead(KEY_PIN) == HIGH) {
breathLED();
} else {
turnOffLED();
}
}
return 0;
}
```
以下是按下KEY1后灯熄灭的函数代码:
```c
#include <stdio.h>
#include <wiringPi.h>
#define LED_PIN 0
#define KEY_PIN 1
void turnOffLED() {
digitalWrite(LED_PIN, LOW);
}
int main() {
wiringPiSetup();
pinMode(LED_PIN, OUTPUT);
pinMode(KEY_PIN, INPUT);
while (1) {
if (digitalRead(KEY_PIN) == HIGH) {
turnOffLED();
}
}
return 0;
}
```
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