我很难从我的Arduino nano向我的Android应用程序发送串行数据。无论使用何种延迟，串行监视器都会显示正确的输出。然而，Android设备将不会收到 - 一致性 - 任何数据，至少延迟800.任何人都可以向我解释这一点，因为我不知所措。
该应用程序是在麻省理工学院的应用程序发明人开发的，工作正常。
非常感谢提前。这是我的代码。
#include <Servo.h>
Servo myservo; // create servo object to control a servo
const int mcbpos = 3; //the pin that will sense the position of the MCB
const int tamper = 4; // the number of the tamper button pin
const int reset = 5; // the pin number of the reset button
const int emstop = 6; //the pin that will sense the emergency stop button
const int onled = 11; // the number of the on led pin
const int offled = 12; // the number of the off led pin
const int tamled = 13; // the numbr of the Tamper input
int i = 0;
int pos = 0; // variable to store the servo position
int tam = 0; // variable to store tamper switch status
int res = 0; // variable to store reset switch status
int ems = 0; // variable to store emergency stop status
int mcb = 0;
byte serialA; //sets up the serial connection to the App
void setup() {
Serial.begin(9600); //Setting up the Baud rate for the Bluetooth connection
pinMode(mcbpos,INPUT); //initialise mcb position sensor
pinMode(tamper,INPUT); //initialize the tamper switch as an input
pinMode(reset,INPUT); // initialise the reset button
pinMode(emstop, INPUT); // initialize the emergency stop pin as an intput
pinMode(tamled, OUTPUT); // initialize the tamper LED pin as an output
pinMode(onled, OUTPUT); // initialize the ON LED pin as an output:
pinMode(offled, OUTPUT); //initialise the OFFLED as an output
myservo.attach(9); // attaches the servo on pin 9 to the servo object
}
int onsub() //sets up the subroutine for moving the servo to the on position
{
for(pos = 90; pos > 50; pos -= 1) // goes from 110 degrees to 135 degrees
{ // in steps of 1 degree
myservo.write(pos); // tell servo to go to position in variable 'pos'
delay(15); // waits 15ms for the servo to reach the position
}
for(pos = 50; pos < 120; pos += 1) // goes from 110 degrees to 135 degrees
{ // in steps of 1 degree
myservo.write(pos); // tell servo to go to position in variable 'pos'
delay(15); // waits 15ms for the servo to reach the position
}
for(pos = 120; pos>=90; pos-=1) // goes from 135 degrees to 110 degrees
{
myservo.write(pos); // tell servo to go to position in variable 'pos'
delay(15); // waits 15ms for the servo to reach the position
}
}
int offsub() //sets up the subroutine for moving the servo to the off position
{
for(pos = 80; pos>=50; pos-=1) // goes from 180 degrees to 0 degrees
{
myservo.write(pos); // tell servo to go to position in variable 'pos'
delay(15); // waits 15ms for the servo to reach the position
}
for(pos = 50; pos < 80; pos += 1) // goes from 0 degrees to 180 degrees
{ // in steps of 1 degree
myservo.write(pos); // tell servo to go to position in variable 'pos'
delay(15); // waits 15ms for the servo to reach the position
}
}
void loop()
{
mcb = digitalRead(mcbpos); //assign mcb position to variable mcb
tam = digitalRead(tamper); //assign tamper signal position to variable tam
res = digitalRead(reset); //assign reset switch position to variable res
ems = digitalRead(emstop); //assign emergency stop switch position to variable ems
digitalWrite(mcbpos, HIGH); //Setting the pull up resistors for the swithches
digitalWrite(tamper, HIGH); //Setting the pull up resistors for the swithches
digitalWrite(reset, HIGH); //Setting the pull up resistors for the swithches
digitalWrite(emstop, HIGH); //Setting the pull up resistors for the swithches
if (Serial.available() > 0)
{
serialA = Serial.read();
Serial.println(serialA);
}
if (mcb == LOW) //if the mcb is in the off position
{
digitalWrite(offled, HIGH); //turn off the OFF LED
digitalWrite(onled, LOW); //turns off the ON LED
Serial.println('0'); //send MCB position off to android
delay(800);
}
else
{
digitalWrite(offled, LOW); //turn off the OFF LED
digitalWrite(onled, HIGH); //turns off the ON LED
Serial.println('1'); //sends MCB position on to android
delay(800);
}
if (tam == HIGH) //if Tamper is button is released-This is a safe to operate feature HIGH is open switch
{
int y; //sets up a variable y
y = offsub(); //Calls the subroutine offsub
while(digitalRead(reset) == HIGH) //Waits for the reset to be operated
{
digitalWrite(tamled,HIGH); //Tamper indicator is on
if (mcb == LOW) //if the mcb is safe then
{
digitalWrite(offled, HIGH); //turn on the OFF LED
digitalWrite(onled, LOW); //turns off the ON LED
Serial.println('2'); //tampering evident
delay(800);
}
else
{
digitalWrite(offled, LOW); //turn on the OFF LED
digitalWrite(onled, HIGH); //turns off the ON LED
Serial.println('3'); //sends 'Tampering evidence- Danger-unable to isolate' message
delay(800);
}
}
digitalWrite(tamled, LOW); //Tamper indicator turns off, return to loop
}
if (ems == LOW) //if Emergency stop button is pressed
{
int y; //sets up a variable
y = offsub(); //Calls the subroutine offsub
while(digitalRead(reset) == HIGH) //Waits for the reset to be operated
{
digitalWrite(tamled, HIGH); //turn on the Tamper LED
if (mcb == LOW) //if the mcb is safe then
{
digitalWrite(offled, HIGH); //turn on the OFF LED
digitalWrite(onled, LOW); //turns off the ON LED
Serial.println('4'); //sends emergency stop operated
delay(800);
}
else
{
digitalWrite(offled, LOW); //turn on the OFF LED
digitalWrite(onled, HIGH); //turns off the ON LED
Serial.println('5'); //sends 'emergency stop operated- Danger-unable to isolate' message
delay(800);
}
}
}
digitalWrite(tamled, LOW); //Tamper indicator turns off, return to loop
if (serialA==9) //if on button is pushed on App
{
digitalWrite(tamled, LOW); //turn off the tamper LED
digitalWrite(onled, HIGH); //turn on the LED
digitalWrite(offled, LOW); //turn off the off led
int x; //sets up a variable
x=onsub(); //Calls the subroutine onsub
serialA==0;
}
if (serialA==8) //check the status of the off button from App, if high then
{
digitalWrite(tamled, LOW); //turn off the tamper led
digitalWrite(offled, HIGH); //turn on the LED
digitalWrite(onled, LOW); //turn off the on LED
int y; //sets up a variable
y = offsub(); //Calls the subroutine offsub
serialA==0;
}
}