CODE | Serial Monitor - Arduino Programming Basic
Arduino 程序基础，介绍Arduino程序的基本组成，第一部分编写数个例程，讲解关于变量及变量名称，串口监视器，if循环,for循环，while循环等。第二部分介绍了函数，全局变量，局部变量和静态变量，数据类型，Bollean运算，注释语句等。
Serial Monitor 串口监视器
串口监视器 Serial.println 1-5
void setup() {
// put your setup code here, to run once:
Serial.begin(9600);
Serial.println(1234);
}
void loop() {
// put your main code here, to run repeatedly:
}串口显示一个运算的结果 1-6
void setup() {
// put your setup code here, to run once:
Serial.begin(9600);
int a=2;
int b=4;
int c= a+b;
Serial.println(c);
}
void loop() {
// put your main code here, to run repeatedly:
}串口显示一个摄氏度转换华氏度的运算结果 1-7
void setup() {
// put your setup code here, to run once:
Serial.begin(9600);
int degC=20;
int degF;
degF=degC*9/5 + 32;
Serial.println(degF);
}
void loop() {
// put your main code here, to run repeatedly:
}if 条件语句 1-8
int ledPin=13;
int delayPeriod =100;
void setup()
{
pinMode(ledPin,OUTPUT);
}
void loop()
{
digitalWrite(ledPin,HIGH);
delay(delayPeriod);
digitalWrite(ledPin,LOW);
delay(delayPeriod);
delayPeriod =delayPeriod +100 ;
if (delayPeriod>3000);
{
delayPeriod =100;
}
}For 循环语句例子 1-9
int ledPin=13;
int delayPeriod =100;
void setup()
{
pinMode(ledPin,OUTPUT);
}
void loop()
{
for (int i=0; i<20;i++)
{
digitalWrite(ledPin,HIGH);
delay(delayPeriod);
digitalWrite(ledPin,LOW);
delay(delayPeriod);
}
delay(3000);
}这个程序的缺点是loop函数会运行较长的时间，处理器会被for循环语句占用，别的进程就无法调用处理，所以改进算法是尽可能快的让loop函数执行完，把进程空出来处理别的程序。
改进算法 1-9a
int ledPin=13;
int delayPeriod =100;
int count = 0;
void setup()
{
pinMode(ledPin,OUTPUT);
}
void loop()
{
digitalWrite(ledPin,HIGH);
delay(delayPeriod);
digitalWrite(ledPin,LOW);
delay(delayPeriod);
count++ ;
if (count == 20)
{
count = 0;
delay(3000);
}
}While 循环 1-10
int ledPin=13;
int delayPeriod =100;
void setup()
{
pinMode(ledPin,OUTPUT);
}
void loop()
{
int i=0;
while(i<20)
{
digitalWrite(ledPin,HIGH);
delay(delayPeriod);
digitalWrite(ledPin,LOW);
delay(delayPeriod);
i++ ;
}
delay(3000);
}
