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POSend 'int' instead of ASCII characters when using C++ for serial communication
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  1. POSend 'int' instead of ASCII characters when using C++ for serial communication
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    copied!<p>I tried <a href="http://www.arduino.cc/playground/Interfacing/CPPWindows" rel="nofollow">the <code>Serial.cpp</code> code from Arduino's website</a>.</p> <p>I just made a couple of changes and got the code working properly. However, the issue is, the C++ code serially sends in ASCII values and not integers. For example, if I send in "5" I receive 53 at the receiver side.</p> <p>I tried changing the buffer type to an int instead of a char, but it returned an error saying:</p> <blockquote> <p>error C2664: 'ReadFile' : cannot convert parameter 2 from 'int' to 'LPVOID'</p> </blockquote> <p>Is there a way to send integers instead of ASCII values serially?</p> <p>Below is a snippet of the code.</p> <pre><code>bool Serial::WriteData(char *buffer, unsigned int nbChar) { DWORD bytesSend; //Try to write the buffer on the Serial port if (!WriteFile(this-&gt;hSerial, (void *)buffer, nbChar, &amp;bytesSend, 0)) { //In case it don't work get comm error and return false ClearCommError(this-&gt;hSerial, &amp;this-&gt;errors, &amp;this-&gt;status); return false; } else return true; } int main() { // Convert from char* to wchar* char *name_ser="COM7"; cout &lt;&lt; name_ser &lt;&lt; "(char*)" &lt;&lt; endl; size_t origsize=strlen(name_ser)+1; const size_t newsize=100; size_t convertedChars=0; wchar_t wcstring[newsize]; mbstowcs_s(&amp;convertedChars, wcstring, origsize, name_ser, _TRUNCATE); wcscat_s(wcstring, L"(wchar_t*)"); wcout&lt;&lt;wcstring&lt;&lt;endl; Serial serial(wcstring); if (serial.IsConnected()){ while (1){ char *chr0 = "5"; serial.WriteData(chr0,1); cout&lt;&lt;chr0&lt;&lt;endl; } } system("pause"); return 0; } </code></pre>
 

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