Keyestudio ARDUINO maker learning kit, Руководство пользователя

Страница: 137 / 162

keyestudio
www.keyestudio.cc
135
pinMode(servopin,OUTPUT);// set servo pin as “output”
Serial.begin(9600);// connect to serial port, set baud rate at “9600”
Serial.println("servo=o_seral_simple ready" ) ;
}
void loop()// convert number 0 to 9 to corresponding 0-180 degree angle, LED blinks
corresponding number of time
{
val=Serial.read();// read serial port value
if(val>'0'&&val<='9')
{
val=val-'0';// convert characteristic quantity to numerical variable
val=val*(180/9);// convert number to angle
Serial.print("moving servo to ");
Serial.print(val,DEC);
Serial.println();
for(int i=0;i<=50;i++) // giving the servo time to rotate to commanded position
{
servopulse(servopin,val);// use the pulse function
}
}
}
//////////////////////////////////////////////////////////
Method 2:
Let's first take a look at the Arduino built-in servo function and some of its common statements.
1. attach
（
interface
）
——select pin for servo, can only use pin 9 or 10.
2. write （ angle ） ——used to control the rotate angle of the servo, can set the angle among 0 degree
to 180 degree.
3. read
（）
——used to read the angle of the servo, consider it a function to read the value in
the write() function.
4
、
attached
（）
——determine whether the parameter of the servo is sent to the servo pin.
5 、 detach （） —— disconnect the servo and the pin, and the pin(digital pin 9 or 10) can be used for
PWM port.
Note: Note: the written form of the above statements are " servo variable name. specific statement
()", e.g. myservo. Attach (9).
Still, connect the servo to pin 9.
Sample program B ：
//////////////////////////////////////////////////////////
#include <Servo.h>// define a header file. Special attention here, you can call the servo function
directly from Arduino's software menu
bar Sketch>Importlibrary>Servo, or input #include <Servo.h>. Make sure there is a space