如何使用Arduino通過藍牙模塊HC-05發送數據？

/* 
== MASTER CODE == 
*/ 
#include <SoftwareSerial.h> 

SoftwareSerial BTSerial(10, 11); // RX | TX 
#define ledPin 9 
int state = 0; 
int Vry = 0; 
int Vrx = 0; 
void setup() { 
    Serial.begin(9600); 
pinMode(ledPin, OUTPUT); 
digitalWrite(ledPin, LOW); 
BTSerial.begin(38400); // HC-05 default speed in AT command more 
} 
void loop() { 
if(BTSerial.available() > 0){ // Checks whether data is comming from the serial port 
state = BTSerial.read(); // Reads the data from the serial port 
} 
// Controlling the LED 
/*if (state == '1') { 
digitalWrite(ledPin, HIGH); // LED ON 
state = 0; 
} 
else if (state == '0') { 
digitalWrite(ledPin, LOW); // LED ON 
state = 0; 
} 

*/ 
// Reading the potentiometer 
//Vry = analogRead(A0); 
/* 
Vrx = analogRead(A1); 
int VrxMapped = map(Vrx, 0, 1023, 0, 255); 

//int Vry_mapped = map(Vrx, 0, 1023, 0, 255); 
//int Vrx_mapped = map(Vry, 0, 1023, 0, 255); 
Serial.print("Vrx"); 
Serial.println(VrxMapped); 
//Serial.print("Vry"); 
//Serial.println(Vry); 

*/ 
Vrx = analogRead(A1); 
BTSerial.write(Vrx); 
Serial.print("Vrx: "); 
Serial.println(Vrx); 

//BTSerial.write(Vry); 
delay(2000); 
}

，並從代碼如下，如何使用Arduino通過藍牙模塊HC-05發送數據？

/* 
== SLAVE CODE == 
*/ 
#include <SoftwareSerial.h> 
#define button 8 
SoftwareSerial BTSerial(5, 3); // RX | TX 
// connect motor controller pins to Arduino digital pins 
// motor one 
int enA = 10; 
int in1 = 9; 
int in2 = 8; 
int enB = 11; 
int in3 = 7; 
int in4 = 6; 
int jx = A0; 
int jy = A1; 
int mx = 0; //right motor 
int my = 0; //left motor 

int state = 0; 
int i = 0; 
int buttonState = 0; 
int ledPin = 13; 
void setup() { 
    pinMode(enA, OUTPUT); 
pinMode(in1, OUTPUT); 
pinMode(in2, OUTPUT); 
pinMode(enB, OUTPUT); 
pinMode(in3, OUTPUT); 
pinMode(in4, OUTPUT); 
BTSerial.begin(38400); // HC-05 default speed 
Serial.begin(9600); 
pinMode(button, INPUT); 
pinMode(ledPin, OUTPUT); 
} 

void loop() { 

    //my = analogRead(BTSerial.read()); 

// mx = analogRead(BTSerial.read()); 
if(BTSerial.available() > 0){ // Checks whether data is comming from the serial port 
    int state = BTSerial.read(); // Reads the data from the serial port 

    //Serial.print('y'); 
    //Serial.println(my+100,DEC); 
    Serial.print('x'); 
    Serial.println(state); 

} 
if (i == 2){ 
    i=0; 
} 
    /*int mapx = map(mx,0,1023,0,255); 
    int mapy = map(my,0,1023,0,255); 
    if (mapx>127) 
    { 
    digitalWrite(in1, LOW); 
    digitalWrite(in2, HIGH); 
    analogWrite(enA,mapx); 
    } 
    else 
    { 
    digitalWrite(in1, HIGH); 
    digitalWrite(in2, LOW); 
    analogWrite(enA,127-mapx); 
    } 
    if (mapy>127) 
    { 
    digitalWrite(in3, HIGH); 
    digitalWrite(in4, LOW); 
    analogWrite(enB,mapy); 
    } 
    else 
    { 
    digitalWrite(in3, LOW); 
    digitalWrite(in4, HIGH); 
    analogWrite(enB,127-mapy); 
    } 
    delay(1000); 
*/ 
/*Serial.println(state); 
if(BTSerial.available() > 0){ // Checks whether data is comming from the serial port 
state = BTSerial.read(); // Reads the data from the serial port 

} 

if (state > 120){ 
    digitalWrite(ledPin, HIGH); // sets the LED on 
    delay(1000);     // waits for a second 
    digitalWrite(ledPin, LOW); // sets the LED off 
    delay(1000); 
} 
else{ 
    digitalWrite(ledPin, HIGH); // sets the LED on 
    delay(1000);     // waits for a second 

} 
// Controlling the servo motor 

// Reading the button 
buttonState = digitalRead(button); 
if (buttonState == HIGH) { 
BTSerial.write('1'); // Sends '1' to the master to turn on LED 
} 
else { 
BTSerial.write('0'); 
} 
*/ 
delay(2000); 
}

這裏的問題我在從末得到130以下，如果我是從主送1，我不知道如何串行通信工作以及如何數據可以通過藍牙設備接收！

來源

2017-04-18 Ahmad Zaid

讀取函數中的藍牙串行返回字符。

來源

2017-04-27 22:23:45

如何使用Arduino通過藍牙模塊HC-05發送數據？

回答

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