Hi, I'm a student who is currently trying to learn how to use xschem in conjunction with ngspice. I attempted to make and simulate an inverter using the Sky130 PDK. The simulation seems to have occurred (I clicked netlist, and then simulate). However, when I click waves, gaw does not show any waveforms. Is there an action that I am forgetting? Thank you for the help. *Side note: I am using the IIC-OSIC-TOOLS all in one container.

@Jon Ho replace the last two lines of your commands with:

.control

save all

dc vin 0 1.8 0.001

write inverter.raw

.endc

@Stefan Schippers Thank you very much for the help. It works. IN the future, do I have to use .control and .endc to capsulate all of my spice directives (in order for this to work). Furthermore, do I have to always "write inverter.raw". I assume writing inverter.raw essentially dumps all of my outputs in a file that gaw can read. Please correct me if I'm wrong on this.

@Jon Ho In general you use .

control / .endc

if you use ngspice in interactive mode (

ngspice-i circuit.spice

) . You use the old school .tran / .dc / .save if you use ngspice in background mode (

ngspice -r circuit.raw -b  circuit.spice

) In batch mode by default ngspice saves all voltages and all voltage source currents if no specific .save v(...) is present in the netlist.

Thank you @Stefan Schippers. I greatly appreciate your help!