串行和Arduino伺服库的问题

Question

today I tried to setup a servo motor running along with this sketch on Arduino. For some reason, when I add the setup lines for the servo, the software serial port doesn't receive data normally. I tried to change the software serial to the normal Serial port on Arduino but the same thing happens.

#include<SoftwareSerial.h>
#include<Servo.h>

Servo myServo;
SoftwareSerial BT1(3,2); // TX, RX 

int val;
int servoPin = 7;
int ledPin = 10;

void setup() {
  pinMode(ledPin,OUTPUT);
  BT1.begin(9600);

  myServo.attach(servoPin);
  myServo.writeMicroseconds(2000); //2 ms for Tower Pro SG 90 Servo
  myServo.write(90); //Initialize at servo's middle point

}

void loop() {

  if (BT1.available()) {
    int i = (int)BT1.read();
    setIntensity(i);
  }

}

void setIntensity(int value) {
  if (value >= 0 && value <= 110) {
    analogWrite(ledPin, value);
  }
}

When I comment out the setup lines for myServo, the Arduino works like a charm. How can I solve this? I'm using an Arduino Duemilanove.

Answer 1

NeoSWSerial is a suitable replacement for SoftwareSerial . NeoSWSerial won't interfere with Servo, because it doesn't use any extra resources, and it doesn't block interrupts for long periods of time.

It's also available from the IDE Library Manager, under the menu Sketch -> Include Library -> ManageLibraries .