WebJun 30, 2015 · Sep 22, 2009 at 23:51. 1. It isn't normal to use a pointer for the "number of bytes written" parameter. A more usual way would be to declare it as type DWORD (and … WebI am reading bytes from a serial port in C++ using a file descriptor and the posix/unix read() function. In this example, I am reading 1 byte from the serial port (baud rate settings and …

windows - Serial Communication C++ ReadFile() - Stack Overflow

WebDec 18, 2024 · To make the program treat the received data as ASCII codes, compile the program with the symbol DISPLAY_STRING, e.g. cc -DDISPLAY_STRING demo.c. If the … WebJul 25, 2011 · Don't know about any forum/website, but the basics are: Call CreateFile () to open the COM port, then use ReadFile () to get data from it; finally call CloseHandle () to … breeds of fluffy cows

c - Reading from a serial port - Code Review Stack Exchange

WebSep 4, 2024 · I am writing a C++ program to read from a serial port (in my case COM6). To open the COM-Port. I always found this code in the internet: HANDLE serialHandle; … If you pass a 1024 character buffer, for example, and five characters were already read from the serial port read() will return 5, to indicate that accordingly. If no characters have been read, and you opened the serial port as a blocking device, read() will block at least until one character has been read from the serial port, and then return. could andrew luck return