While debugging your HDL design with the Vivado simulator, you can determine that your HDL source code needs correction.
Use the following steps to modify your design and re-run the simulation:
- Use the Vivado code editor or other text editor to update and save any necessary source code changes.
- Use the Relaunch Simulation
button on the Vivado IDE
toolbar to re-compile and re-launch the simulation, as shown in the following
figure. You might alternatively use the relaunch_simTcl command to re-compile and re-launch the simulation.Figure 1. Relaunch Simulation Button
- If the modified design fails to compile, an error box appears displaying the reason for failure. The Vivado IDE continues to display the results of the previous run of the simulation in a disabled state. Return to step 1 to correct the errors and re-launch the simulation again.
After the design successfully re-compiles, the simulation starts again.
Important: Relaunching might fail
for reasons other than compilation errors, such as in the case of a file system
error. If the Run buttons
on the Simulation toolbar
is grayed out after a re-launch, indicating that the simulation is disabled, check
the contents of the Tcl Console for possible errors that have prevented the
re-launch from succeeding.
CAUTION:
You might also re-launch
the simulation using Run
Simulation in the Flow Navigator or using
launch_simulation Tcl command. However, using these
options might fully close the simulation, discarding waveform changes and simulation
settings such as radix customization.Note: The Relaunch
Simulation button is active only after
one successful run of Vivado simulator using
is active only after
one successful run of Vivado simulator using
launch_simulation. The Relaunch Simulation button would be grayed out if
the simulation is run in a Batch/Scripted mode.