read_sdc (::quartus::sta)

The following table displays information for the read_sdc Tcl command:

Tcl Package and Version	Belongs to ::quartus::sta 1.0
Syntax	`read_sdc [-h \| -help] [-long_help]` `[-hdl]` `[-instance` <instance_name>`]` `[`<file_name>`]`
Arguments	`-h \| -help`	Short help
	`-long_help`			Long help with examples and possible return values
`-hdl`			Read SDC commands embedded in HDL
`-instance` <instance_name>			Name of the block for which we are reading the SDC file
<file_name>			Name of the SDC file
Description	`Reads an SDC file with all current constraints and exceptions. If an SDC file is specified, read_sdc only reads that SDC file. If the -hdl option is specified, read_sdc only reads SDC commands that were embedded in HDL. If no arguments are specified, read_sdc reads the default SDC files along with any SDC commands that were embedded in HDL. If one or more SDC_FILE assignments exists in the QSF, read_sdc reads all of them in order. Otherwise, read_sdc reads the file <revision>.sdc if it exists.`
Example Usage	`project_new test create_timing_netlist # Read SDC commands from test_constraints.sdc read_sdc test_constraints.sdc # Read SDC commands embedded in HDL read_sdc -hdl update_timing_netlist report_timing delete_timing_netlist project_close`
Return Value	Code Name	Code	String Return
	TCL_OK	0	INFO: Operation successful
	TCL_ERROR	1	ERROR: Can't find file <string>
	TCL_ERROR	1	ERROR: Timing netlist does not exist. Use create_timing_netlist to create a timing netlist.