.TH "open.c" 3 "8 Feb 2007" "can4linux" \" -*- nroff -*-.ad l.nh.SH NAMEopen.c \- .SH SYNOPSIS.br.PP.SS "Functions".in +1c.ti -1c.RI "int \fBcan_open\fP (__LDDK_OPEN_PARAM)".br.RI "\fIint open(const char *pathname, int flags); opens the CAN device for following operations \fP".in -1c.SS "Variables".in +1c.ti -1c.RI "int \fBCan_isopen\fP [MAX_CHANNELS] = { 0 }".br.in -1c.SH "Detailed Description".PP \fBAuthor:\fP.RS 4Heinz-J黵gen Oertel, port GmbH .PP\fBRevision\fP.RS 41.2 .RE.PP\fBDate\fP.RS 42006/06/02 12:13:14 .RE.PP.RE.PP.SH "Function Documentation".PP .SS "int can_open (__LDDK_OPEN_PARAM)".PPint open(const char *pathname, int flags); opens the CAN device for following operations .PP\fBParameters:\fP.RS 4\fIpathname\fP device pathname, usual /dev/can? .br\fIflags\fP is one of \fCO_RDONLY\fP, \fCO_WRONLY\fP or \fCO_RDWR\fP which request opening the file read-only, write-only or read/write, respectively..RE.PPThe open call is used to 'open' the device. Doing a first initialization according the to values in the /proc/sys/Can file system. Additional an ISR function is assigned to the IRQ..PPThe CLK OUT pin is configured for creating the same frequency like the chips input frequency fclk (XTAL)..PPIf Vendor Option \fIVendOpt\fP is set to 's' the driver performs an hardware reset befor initializing the chip..PP\fBReturns:\fP.RS 4open return the new file descriptor, or -1 if an error occurred (in which case, errno is set appropriately)..RE.PP\fBERRORS\fP.RS 4the following errors can occur .PD 0.IP "\(bu" 2\fCENXIO\fP the file is a device special file and no corresponding device exists. .IP "\(bu" 2\fCEINVAL\fP illegal \fBminor\fP device number .IP "\(bu" 2\fCEINVAL\fP wrong IO-model format in /proc/sys/Can/IOmodel .IP "\(bu" 2\fCEBUSY\fP IRQ for hardware is not available .IP "\(bu" 2\fCEBUSY\fP I/O region for hardware is not available .PP.RE.PP.SH "Author".PP Generated automatically by Doxygen for can4linux from the source code.