Hello, I want to use an arduino UNO to set the velocity at my EPOS 24/5 with the rs232. Has someone some experience with this positioning controller and can send me an example sketch or just a tip. The problem is, that ich don't know how to send and read the datas with the rs232. I tried all Serial.write() an .read stuff with no result. The only thing I 've got is the crc16 ccitt calculation.
How do i translate this(example written in Windows Visual) to use it for arduino:
aus SerialCtrl.h
BOOL SerialCtrl::Read(char * inputData, const unsigned int & sizeBuffer, unsigned long & length) { if (ReadFile(m_portHandle, // handle of file to read inputData, // handle of file to read sizeBuffer, // number of bytes to read &length, // pointer to number of bytes read NULL) == 0) // pointer to structure for data { // AfxMessageBox("Reading of serial communication has problem."); return FALSE; } if (length > 0) { inputData[length] = NULL; // Assign end flag of message. return TRUE; } return TRUE; }
BOOL SerialCtrl::Write(const char * outputData, const unsigned int & sizeBuffer, unsigned long & length) { if (length > 0) { if (WriteFile(m_portHandle, // handle to file to write to outputData, // pointer to data to write to file sizeBuffer, // number of bytes to write &length,NULL) == 0) // pointer to number of bytes written { AfxMessageBox(L"Reading of serial communication has problem."); return FALSE; } return TRUE; } return FALSE; }
aus WinBase.h
WriteFile( __in HANDLE hFile, __in_bcount_opt(nNumberOfBytesToWrite) LPCVOID lpBuffer, __in DWORD nNumberOfBytesToWrite, __out_opt LPDWORD lpNumberOfBytesWritten, __inout_opt LPOVERLAPPED lpOverlapped );
WINBASEAPI BOOL WINAPI ReadFile( __in HANDLE hFile, __out_bcount_part_opt(nNumberOfBytesToRead, *lpNumberOfBytesRead) __out_data_source(FILE) LPVOID lpBuffer, __in DWORD nNumberOfBytesToRead, __out_opt LPDWORD lpNumberOfBytesRead, __inout_opt LPOVERLAPPED lpOverlapped );