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连续舵机两种编程调用方式效果不同
1.采用舵机用库函数
myservo.write(val); // sets the servo position according to the scaled value
2.采用脉冲高电平
digitalWrite(9, HIGH); // sets the LED on
delayMicroseconds(val); // waits for a second
digitalWrite(9, LOW); // sets the LED off
效果不同 A.用库函数会连续转动，即代码执行完了还在转，估计有定时时钟调用，而使用第二种方式执行过后，舵机停止
B。采用第二种方式，修正微调舵机，让输入为16进制的80、81、82（即～1051ms～）舵机停止，转而采用方式1时，舵机参数要在93度时才停止 ，这个不同是个怎么回事呢，两种调用有偏差？
代码附后
1.采用舵机用库函数
#include <Servo.h>
Servo myservo; // create servo object to control a servo
int val; // variable to read the value from the analog pin
void setup()
{
myservo.attach(9); // attaches the servo on pin 8 to the servo object
Serial.begin(9600);
}
void loop()
{
if (Serial.available() > 0) {
// get incoming byte:
val = Serial.read();
Serial.println(val);
myservo.write(val); // sets the servo position according to the scaled value
delay(300); // waits for the servo to get there
}
delay(100); // waits for the servo to get there
}
2.采用脉冲高电平
int potpin = 0; // analog pin used to connect the potentiometer
int val; // variable to read the value from the analog pin
int inByte = 0; // incoming serial byte
void setup()
{
pinMode(9, OUTPUT);
; // attaches the servo on pin 9 to the servo object
Serial.begin(9600);
}
void loop()
{
if (Serial.available() > 0) {
// get incoming byte:
inByte = Serial.read();
Serial.println(inByte);
val = map(inByte, 0, 255, 1000, 2000); // scale it to use it with the servo (value between 0 and 180)
Serial.println(val);
for(int i=0;i<10;i++)
{
{
digitalWrite(9, HIGH); //
delayMicroseconds(val); // waits for a second
digitalWrite(9, LOW); //
delay(20); //
}
}
}
delay(100); // waits for the servo to get there
}
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发表于 2012-7-18 15:36:52
