Communication problem with C++

Projects Programming
6

Here is the C++ code:

#include "stdafx.h"
#include <iostream>
#include "Serial.h"

int _tmain(int argc, _TCHAR* argv[])
{

	LPCWSTR portName = L"COM4";
	Serial *serialPort1;
	serialPort1 = new Serial(portName);
	int a = 0;
	int b = 0;
	int c, i, continuar;
	char *buffer;


	while(b < 10){

		if (a == 0){
			if ((0 <= b) && (b < 5)){
				buffer = "05100";
			}
			else if ((5 <= b) && (b < 9)){
				buffer = "05050";
			}
			else{//b==9
				buffer = "05000";
			}
			a = 1;
		}
		else{
			if ((0 <= b) && (b < 5)){
				buffer = "06100";
			}
			else if ((5 <= b) && (b < 9)){
				buffer = "06050";
			}
			else{//b==9
				buffer = "06000";
			}
			a = 0;
		}

		if (serialPort1->WriteData(buffer, sizeof(buffer)) == false)
			std::cout << "ERROR sending data\n";
		if (serialPort1->WriteData(buffer, sizeof(buffer)) == false)
			std::cout << "ERROR sending data\n";

		Sleep(1000);

		c = b%2;
		if (c == 1){
			buffer = "08100";
		}
		else{
			buffer = "08000";
		}
		if (serialPort1->WriteData(buffer, sizeof(buffer)) == false)
			std::cout << "ERROR sending data\n";
		if (serialPort1->WriteData(buffer, sizeof(buffer)) == false)
			std::cout << "ERROR sending data\n";

		
		Sleep(1000);
		b++;
	}
}

And here is the Arduino code:

#include <Servo.h>

int terminal1, terminal2, tension1, tension2, tension3, pos1, pos2, pos3, max_ang;
float pos_f;
char c;
Servo g_servo8;


void setup(){
  //crea el objeto serial
  Serial.begin(9600);
  max_ang = 180;
 
  //leds
  pinMode(5, OUTPUT);
  //servos
  pinMode(8, OUTPUT);
  g_servo8.attach(8);
}

void loop(){
 
  //el arduino espera a recibir algo
  while (Serial.available() > 1){

    //lee el terminal
    terminal1 = Serial.read();
    terminal1 = (terminal1 - 48)*10;
    terminal2 = Serial.read();
    terminal2 = terminal2 - 48 + terminal1;

   
    delay(5); //espera para que le lleguen todos los datos antes de leerlos
   
    if ( terminal2 == 5){
      //LEDS     
      //lee la tension
      tension1 = Serial.read();
      tension1 = (tension1 - 48)*100;
      tension2 = Serial.read();
      tension2 = (tension2 - 48)*10 + tension1;
      tension3 = Serial.read();
      tension3 = 2*(tension3 - 48 + tension2);

     
      analogWrite(terminal2, tension3);

    }
    else{
      //servos
      pos1 = Serial.read();
      pos1 = (pos1 - 48)*100;
      pos2 = Serial.read();
      pos2 = (pos2 - 48)*10 + pos1;
      pos3 = Serial.read();
      pos3 = (pos3 - 48) + pos2;
      pos_f = (float)pos3/100.0 * max_ang;

      g_servo8.write(pos_f);
   }
  }//end while
}

Thanks for your help!