使用HC05和HC06模块实现两个Arduino之间的通信

Question

我想在2Arduino与HC05(主)和HC06 (从)之间执行蓝牙通信。我成功地完成了两个模块的配对，但当我发送从电位器读取的字节时，从机会收到另一个值，即128，-1,248。下面是Arduino的代码

Arduino master HC05

#include <SoftwareSerial.h>
SoftwareSerial BTserial(2, 3); // RX | TX
// Connect the HC-05 TX to Arduino pin 2 RX. 
// Connect the HC-05 RX to Arduino pin 3 TX through a voltage divider.
int potpin = 0;  // analog pin used to connect the potentiometer

void setup() 
{
    // start the serial communication with the host computer
    Serial.begin(9600);
    Serial.println("Arduino with HC-05 is ready");

    // start communication with the HC-05 using 9600
    BTserial.begin(9600);  
    Serial.println("BTserial started at 9600");
}

void loop()
{
    BTserial.println(analogRead(potpin)); 
    delay(100); 
    Serial.println(analogRead(potpin));
}

Arduino从HC06

#include <SoftwareSerial.h>
#include <Servo.h>
Servo myservo; 
SoftwareSerial slave(2, 3); // RX | TX
// Connect the HC-05 TX to Arduino pin 2 RX. 
// Connect the HC-05 RX to Arduino pin 3 TX through a voltage divider.
int c = 0;
int val;
void setup() 
{
    // start the serial communication with the host computer
    Serial.begin(9600);
    Serial.println("Arduino with HC-06 is ready");

    // start communication with the HC-05 using 9600
    slave.begin(9600);  
    Serial.println("BTserial started at 9600");

    myservo.attach(9);
}

void loop()
{

    if (slave.available())
    {  
        val= slave.read();
        Serial.println(val);
        val = map(val, 0, 1023, 0, 180);
        myservo.write(val); 
        delay(15);    
    }
}

感谢你的每一个回答

Answer 1

在从属草图中，您应该用parseInt()替换slave.read()。

read()函数将读取单个字节。当主机发送整数值potpin=130时，函数println(potpin)会将其转换为3个字节(编码为ascii字符)，并将它们发送出去。在从机端，你必须读取所有传入的字节，存储在字符串中，并将字符串转换为整型变量。parseInt()将在单行中做到这一点。