C++ Can'；t使用Arduino和SIM900连接或发布到MQTT代理

我编写了一个简单的草图，将连接和发布数据包发送到cloudMQTT服务器。我没有从SIM900返回任何错误，但cloudMQTT仪表板上没有显示任何内容

#include <SoftwareSerial.h>
SoftwareSerial SoftSerial( 9, 10 );

// These varaibles are passed to functionality that generates the connect and publish packets. This code was taken from a sketch written by Ravi Pujar
unsigned int Counter = 0;
unsigned long datalength, CheckSum, RLength;
unsigned short topiclength;
unsigned char topic[30];
char str[250];
unsigned char encodedByte;
int X;
unsigned short MQTTProtocolNameLength;
unsigned short MQTTClientIDLength;
unsigned short MQTTUsernameLength;
unsigned short MQTTPasswordLength;
const char MQTTHost[30] = "hairdresser.cloudmqtt.com";
const char MQTTPort[10] = "18958";
const char MQTTClientID[20] = "ABCDEF";
const char MQTTTopic[30] = "valetron";
const char MQTTProtocolName[10] = "MQIsdp";
const char MQTTLVL = 0x03;
const char MQTTFlags = 0xC2;
const unsigned int MQTTKeepAlive = 60;
const char MQTTUsername[30] = "uroxeeil";
const char MQTTPassword[35] = "ifG3xIxaf5gT";
const char MQTTQOS = 0x00;
const char MQTTPacketID = 0x0001;

unsigned char buffer[ 64 ];
int counter = 0;

void setup() 
{
    // Set the babud rate of both the software serial and hardware serial
    Serial.begin( 19200 );
    SoftSerial.begin( 19200 );

    delay(2000);

    // This section of code sends AT commands to initialize the SIM900
    //-------------- AT INITIALIZATION - This is working fine--------------//
    SoftSerial.write( "\r\nAT\r\n" );

    delay(3000);

    while ( SoftSerial.available() > 0 )
    {
        buffer[ counter++ ] = SoftSerial.read();
        if( counter == 64 ) break;        
    }

    Serial.write( buffer, counter );

    for( int i = 0; i < counter; i++ )
    {
        buffer[ i ] = NULL;
    }
    counter = 0;

delay(2000);
//-----
    SoftSerial.write( "\r\nAT+CIPSHUT\r\n" );

    delay(3000);

    while ( SoftSerial.available() > 0 )
    {
        buffer[ counter++ ] = SoftSerial.read();
        if( counter == 64 ) break;        
    }

    Serial.write( buffer, counter );

    for( int i = 0; i < counter; i++ )
    {
        buffer[ i ] = NULL;
    }
    counter = 0;

delay(2000);
//-----
    SoftSerial.write( "\r\nAT+CIPMUX=0\r\n" );

    delay(3000);

    while ( SoftSerial.available() > 0 )
    {
        buffer[ counter++ ] = SoftSerial.read();
        if( counter == 64 ) break;        
    }

    Serial.write( buffer, counter );

    for( int i = 0; i < counter; i++ )
    {
        buffer[ i ] = NULL;
    }
    counter = 0;

delay(2000);
//-----
    SoftSerial.write( "\r\nAT+CGATT=1\r\n" );

    delay(3000);

    while ( SoftSerial.available() > 0 )
    {
        buffer[ counter++ ] = SoftSerial.read();
        if( counter == 64 ) break;        
    }

    Serial.write( buffer, counter );

    for( int i = 0; i < counter; i++ )
    {
        buffer[ i ] = NULL;
    }
    counter = 0;

delay(2000);
//-----
    SoftSerial.write( "\r\nAT+CSTT=\"myMTN\", \"\", \"\"\r\n" );    

    delay(3000);

    while ( SoftSerial.available() > 0 )
    {
        buffer[ counter++ ] = SoftSerial.read();
        if( counter == 64 ) break;        
    }

    Serial.write( buffer, counter );

    for( int i = 0; i < counter; i++ )
    {
        buffer[ i ] = NULL;
    }
    counter = 0;

delay(2000);
//-----
    SoftSerial.write( "\r\nAT+CIICR\r\n" );

    delay(3000);

    while ( SoftSerial.available() > 0 )
    {
        buffer[ counter++ ] = SoftSerial.read();
        if( counter == 64 ) break;        
    }

    Serial.write( buffer, counter );

    for( int i = 0; i < counter; i++ )
    {
        buffer[ i ] = NULL;
    }
    counter = 0;

delay(2000);
//-----
    SoftSerial.write( "\r\nAT+CIFSR\r\n" );

    delay(3000);

    while ( SoftSerial.available() > 0 )
    {
        buffer[ counter++ ] = SoftSerial.read();
        if( counter == 64 ) break;        
    }

    Serial.write( buffer, counter );

    for( int i = 0; i < counter; i++ )
    {
        buffer[ i ] = NULL;
    }
    counter = 0;

delay(2000);
//-----
    SoftSerial.write( "\r\nAT+CIPSTART=\"TCP\", \"hairdresser.cloudmqtt.com\", \"18958\"\r\n" );

    delay(10000);

    while ( SoftSerial.available() > 0 )
    {
        buffer[ counter++ ] = SoftSerial.read();
        if( counter == 64 ) break;        
    }

    Serial.write( buffer, counter );

    for( int i = 0; i < counter; i++ )
    {
        buffer[ i ] = NULL;
    }
    counter = 0;

delay(2000);

    //-------------- END OF AT INITIALIZATION --------------//
    //This is where the issue lies

    // Send the connect packet. This code was written by Ravi Pujar

    SoftSerial.write( "\r\nAT+CIPSEND\r\n" );

    delay(3000);
    SoftSerial.write(0x10);
    MQTTProtocolNameLength = strlen(MQTTProtocolName);
    MQTTClientIDLength = strlen(MQTTClientID);
    MQTTUsernameLength = strlen(MQTTUsername);
    MQTTPasswordLength = strlen(MQTTPassword);
    datalength = MQTTProtocolNameLength + 2 + 4 + MQTTClientIDLength + 2 + MQTTUsernameLength + 2 + MQTTPasswordLength + 2;
    X = datalength;
    do {
    encodedByte = X % 128;
    X = X / 128;
    if (X > 0) {
      encodedByte |= 128;
    }
    SoftSerial.write(encodedByte);
    }
    while (X > 0);
    SoftSerial.write(MQTTProtocolNameLength >> 8);
    SoftSerial.write(MQTTProtocolNameLength & 0xFF);
    SoftSerial.print(MQTTProtocolName);
    SoftSerial.write(MQTTLVL); // LVL
    SoftSerial.write(MQTTFlags); // Flags
    SoftSerial.write(MQTTKeepAlive >> 8);
    SoftSerial.write(MQTTKeepAlive & 0xFF);
    SoftSerial.write(MQTTClientIDLength >> 8);
    SoftSerial.write(MQTTClientIDLength & 0xFF);
    SoftSerial.print(MQTTClientID);
    SoftSerial.write(MQTTUsernameLength >> 8);
    SoftSerial.write(MQTTUsernameLength & 0xFF);
    SoftSerial.print(MQTTUsername);
    SoftSerial.write(MQTTPasswordLength >> 8);
    SoftSerial.write(MQTTPasswordLength & 0xFF);
    SoftSerial.print(MQTTPassword);
    SoftSerial.write(0x1A);  

    delay( 2000 );

    // Send the publish packet. This code was written by Ravi Pujar

    SoftSerial.print("\r\nAT+CIPSEND\r\n");
    delay(3000);
    memset(str, 0, 250);
    topiclength = sprintf((char * ) topic, MQTTTopic);
    datalength = sprintf((char * ) str, "%s%u", topic, Counter);
    delay(1000);
    Serial.write(0x30);
    X = datalength + 2;
    do {
    encodedByte = X % 128;
    X = X / 128;
    if (X > 0) {
    encodedByte |= 128;
    }
    SoftSerial.write(encodedByte);
    }
    while (X > 0);
    SoftSerial.write(topiclength >> 8);
    SoftSerial.write(topiclength & 0xFF);
    SoftSerial.print(str);
    SoftSerial.write(0x1A);    
}

void loop() 
{
    // Display any response that has been sent after the first CIPSEND 
    while ( SoftSerial.available() > 0 )
    {
        buffer[ counter++ ] = SoftSerial.read();
        if( counter == 64 ) break;        
    }

    Serial.write( buffer, counter );

    for( int i = 0; i < counter; i++ )
    {
        buffer[ i ] = NULL;
    }
    counter = 0;
}

#包括
软件系列软件系列（9,10）；
//这些变量被传递给生成连接和发布数据包的功能。此代码取自Ravi Pujar编写的草图
无符号整数计数器=0；
无符号长数据长度、校验和、RLength；
无符号短topiclength；
未签名字符主题[30]；
char-str[250]；
无符号字符编码字节；
int X；
无符号短MQTTProtocolNameLength；
无符号短MQTTCLIENTDLENGHT；
无符号短MQTTUsernameLength；
无符号短MQTTPasswordLength；
const char MQTTHost[30]=“hairdresser.cloudmqtt.com”；
常量字符MQTTPort[10]=“18958”；
常量字符MQTTClientID[20]=“ABCDEF”；
常量字符MQTTTopic[30]=“valetron”；
常量字符MQTTProtocolName[10]=“MQIsdp”；
常量字符MQTTLVL=0x03；
常量字符MQTTFlags=0xC2；
常量无符号整数MQTTKeepAlive=60；
常量字符MQTTUsername[30]=“uroxeeil”；
常量字符MQTTPassword[35]=“ifG3xIxaf5gT”；
常量字符MQTTQOS=0x00；
常量字符MQTTPacketID=0x0001；
无符号字符缓冲区[64]；
int计数器=0；
无效设置（）
{
//设置软件串行和硬件串行的babud速率
连载《开始》（19200）；
SoftSerial.begin（19200年）；
延迟（2000年）；
//这段代码发送AT命令来初始化SIM900
//--------------在初始化时-这工作正常--------------//
SoftSerial.write（“\r\nAT\r\n”）；
延迟（3000）；
while（SoftSerial.available（）>0）
{
缓冲区[counter++]=SoftSerial.read（）；
如果（计数器==64）中断；
}
串行写入（缓冲器、计数器）；
对于（int i=0；i0）
{
缓冲区[counter++]=SoftSerial.read（）；
如果（计数器==64）中断；
}
串行写入（缓冲器、计数器）；
对于（int i=0；i0）
{
缓冲区[counter++]=SoftSerial.read（）；
如果（计数器==64）中断；
}
串行写入（缓冲器、计数器）；
对于（int i=0；i0）
{
缓冲区[counter++]=SoftSerial.read（）；
如果（计数器==64）中断；
}
串行写入（缓冲器、计数器）；
对于（int i=0；i0）
{
缓冲区[counter++]=SoftSerial.read（）；
如果（计数器==64）中断；
}
串行写入（缓冲器、计数器）；
对于（int i=0；i0）
{
缓冲区[counter++]=SoftSerial.read（）；
如果（计数器==64）中断；
}
串行写入（缓冲器、计数器）；
对于（int i=0；i0）
{
缓冲区[counter++]=SoftSerial.read（）；
如果（计数器==64）中断；
}
串行写入（缓冲器、计数器）；
对于（int i=0；i0）
{
缓冲区[counter++]=SoftSerial.read（）；
如果（计数器==64）中断；
}
串行写入（缓冲器、计数器）；
对于（int i=0；i0）{
编码字节|=128；
}
软串行写入（编码字节）；
}
而（X>0）；
SoftSerial.write（MQTTProtocolNameLength>>8）；
SoftSerial.write（MQTTProtocolNameLength&0xFF）；
SoftSerial.print（MQTTProtocolName）；
SoftSerial.write（MQTTLVL）；//LVL
SoftSerial.write（MQTTFlags）；//标志
SoftSerial.write（MQTTKeepAlive>>8）；
SoftSerial.write（MQTTKeepAlive&0xFF）；
SoftSerial.write（mqttclientdleength>>8）；
SoftSerial.write（MQTTClientIDLength&0xFF）；
SoftSerial.print（MQTTClientID）；
SoftSerial.write（MQTTUsernameLength>>8）；
SoftSerial.write（MQTTUsernameLength&0xFF）；
SoftSerial.print（MQTTUsername）；
SoftSerial.write（MQTTPasswordLength>>8）；
SoftSerial.write（MQTTPasswordLength&0xFF）；
SoftSerial.print（MQTTPass
#include <SoftwareSerial.h>
SoftwareSerial SoftSerial( 9, 10 );

// Go Look up the structure of MQTT packets and from there you will learn how to compile these
byte connectPacket[ 19 ] = 
{ 
   0x10, 0x11, 0x00, 0x04, 0x4D, 0x51, 0x54, 0x54, 0x04, 0x02, 0x00, 0x3C, 0x00, 0x05, 0x54, 0x32, 0x54, 0x49, 0x44
};

byte publishPacket[ 26 ] = 
{
  0x30, 0x18, 0x00, 0x0E, 0x54, 0x32, 0x54, 0x5F, 0x54, 0x6F, 0x70, 0x69, 0x63, 0x5F, 0x44, 0x65, 0x6D, 0x6F, 0x54, 0x65, 0x6D, 0x70, 0x3A, 0x20, 0x33, 0x30 
};

unsigned char buffer[ 64 ];
int counter = 0;

// Simple function to send an AT command and see its response
void sendAtCommandWithResponse( char message[] )
{
   SoftSerial.write( message );

   delay(3000);

   while ( SoftSerial.available() > 0 )
   {
       buffer[ counter++ ] = SoftSerial.read();
       if( counter == 64 ) break;        
   }

   Serial.write( buffer, counter );

   for( int i = 0; i < counter; i++ )
   {
       buffer[ i ] = NULL;
   }
   counter = 0;
}

void setup() 
{
   Serial.begin( 19200 );
   SoftSerial.begin( 19200 );

   delay(10000);

   // -- Configure the SIM900 and establish the TCP connection to the server

   sendAtCommandWithResponse( "\r\nAT\r\n" );

   delay(2000);
   //-----

   sendAtCommandWithResponse( "\r\nAT+CIPSHUT\r\n" );

   delay(2000);
   //-----

   sendAtCommandWithResponse( "\r\nAT+CIPMUX=0\r\n" );

   delay(2000);
   //-----

   sendAtCommandWithResponse( "\r\nAT+CGATT=1\r\n" );    

   delay(2000);
   //-----

   sendAtCommandWithResponse( "\r\nAT+CSTT=\"myMTN\", \"\", \"\"\r\n" );    

   delay(2000);
   //-----

   sendAtCommandWithResponse( "\r\nAT+CIICR\r\n" );

   delay(2000);
   //-----

   sendAtCommandWithResponse( "\r\nAT+CIFSR\r\n" );

   delay(2000);
   //-----

   SoftSerial.write( "\r\nAT+CIPSTART=\"TCP\", \"test.mosquitto.org\", \"1883\"\r\n" );    

   delay(10000);
   //-----

   while ( SoftSerial.available() > 0 )
   {
       buffer[ counter++ ] = SoftSerial.read();
       if( counter == 64 ) break;        
   }

   Serial.write( buffer, counter );

   for( int i = 0; i < counter; i++ )
   {
       buffer[ i ] = NULL;
   }
   counter = 0;

   delay(2000);
   //-----

   // -- Send the connect packet 
   sendAtCommandWithResponse( "\r\nAT+CIPSEND\r\n" );

   delay(3000);

   SoftSerial.write( connectPacket, sizeof( connectPacket ) );
   // This tells the SIM900 to send the packet
   SoftSerial.write(0x1A); 

   delay(3000);

   // -- Send the publish packet
   sendAtCommandWithResponse( "\r\nAT+CIPSEND\r\n" );

   delay(3000);

   SoftSerial.write( publishPacket, sizeof( publishPacket ) );     
   // This tells the SIM900 to send the packet
   SoftSerial.write(0x1A);  
}

void loop() 
{
   while ( SoftSerial.available() > 0 )
   {
       buffer[ counter++ ] = SoftSerial.read();
       if( counter == 64 ) break;        
   }

   Serial.write( buffer, counter );

   for( int i = 0; i < counter; i++ )
   {
       buffer[ i ] = NULL;
   }
   counter = 0;
}