======fseropen====== WMPRO FW >= 1.0 WMMEGA FW >= 2.0 Open the serial port at the specified baud rate with optional parameters ====Description==== int fseropen ( int $baud [, int $blocking [, int $invert [, int $parity ]]] ) Attempt to open the serial port, and return the file handle for future operations ====Parameters==== $baud: Rate in bits per second $blocking: Optional, if set to 1 read operations will block until data is available $invert: Optional $parity: Optional, 0 (even parity) or 1 (odd parity) ====Return Values==== Integer: File handle, or 0 if the attempt to open the serial port fails The file handle may be used together with the other file functions that require a handle such as [[fgets()]], [[fwrite()]], [[fclose()]] and [[feof()]] ====Example==== ===Open the serial port at 115200 baud in non-blocking mode===

====Also See==== [[how_tos:Serial Port Programming]] - Some information on connecting and using the serial ports [[fopen()]] - Open a file for reading or writing [[f485open()]] - Open the RS-485 port at the specified baud rate and parity [[fsockopen()]] - Open an internet socket connection with optional timeout [[fread()]] - Read bytes from a file, stream or socket [[fgets()]] - Return a single line from a file, stream or socket, with optional size limit [[fwrite()]] - Write data to a file, stream or socket [[feof()]] - Test if no more data is available in a file, stream or socket [[filesize()]] - Return the size of a file, or the number of unread bytes in a stream or socket [[fseek()]] - Position the file pointer in an open file [[ftell()]] - Return the current position of a file read/write pointer [[fclose()]] - Close a file, stream or socket