Merge pull request #466 from arpadbuermen/master

visual setup for acstb analysis

xschem_library/analyses/README.md

@@ -37,6 +37,7 @@ The following analyses are supported
 |dcxf.sym  |small signal dc transfer function |dcxf        |tf      |
 |ac.sym    |small signal ac                   |ac          |ac      |
 |acxf.sym  |small signal ac transfer function |acxf        |-       |
+|acstb.sym |small signal ac stability         |acstb       |-       |
 |noise.sym |small signal noise                |noise       |noise   |
 |tran.sym  |transient                         |tran        |tran    |
 |hb.sym    |harmonc balance                   |hb          |-       |

xschem_library/analyses/acstb.sym

@@ -0,0 +1,54 @@
+v {xschem version=3.4.8RC file_version=1.3
+*
+* Analyses library for visual circuit analysis setup. 
+* Copyright (C) 2025 Arpad Buermen
+*
+* This program is free software; you can redistribute it and/or modify
+* it under the terms of the GNU General Public License as published by
+* the Free Software Foundation; either version 2 of the License, or
+* (at your option) any later version.
+*
+* This program is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+* GNU General Public License for more details.
+*
+* You should have received a copy of the GNU General Public License
+* along with this program; if not, write to the Free Software
+* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+}
+G {}
+K {type=netlist_command_analysis_acstb
+template="name=acstb1
+only_toplevel=false 
+order=\\"\\"
+sweep=\\"\\"
+probe=\\"\\\\\\"vfb\\\\\\"\\"
+localgnd=\\"\\"
+from="10"
+to="100k"
+step=\\"\\"
+mode=\\"\\\\\\"dec\\\\\\"\\"
+points=\\"10\\"
+values=\\"\\"
+nodeset=\\"\\"
+store=\\"\\"
+write=\\"\\"
+writeop=\\"\\"
+"}
+V {}
+S {}
+F {}
+E {}
+L 4 0 -30 140 -30 {}
+L 4 0 -30 0 30 {}
+L 4 140 -30 140 30 {}
+L 4 0 30 140 30 {}
+L 4 10 40 150 40 {}
+L 4 150 -10 150 40 {}
+L 4 10 30 10 40 {}
+L 4 140 -10 150 -10 {}
+T {@name} 5 -50 0 0 0.3 0.3 {}
+T {AC STB} 5 -20 0 0 0.3 0.3 {}
+T {tcleval([ ::analyses::display_acstb @name ])} 5 50 0 0 0.3 0.3 {}
+T {tcleval([ ::analyses::display_order @name ])} 5 0 0 0 0.3 0.3 {}

xschem_library/analyses/demo.sch

@@ -141,7 +141,7 @@ store=""
 write=""
 writeop=""
 }
-C {acxf.sym} 960 1100 0 0 {name=acxf1
+C {acxf.sym} 960 1120 0 0 {name=acxf1
 only_toplevel=false 
 order="8"
 sweep=""
@@ -158,9 +158,9 @@ store=""
 write=""
 writeop=""
 }
-C {noise.sym} 960 1340 0 0 {name=noise1
+C {noise.sym} 1190 1120 0 0 {name=noise1
 only_toplevel=false 
-order="9"
+order="10"
 sweep=""
 outp="\\"out\\""
 outn=""
@@ -177,9 +177,9 @@ store=""
 write=""
 writeop=""
 }
-C {hb.sym} 960 1590 0 0 {name=hb1
+C {hb.sym} 1190 1370 0 0 {name=hb1
 only_toplevel=false 
-order="10"
+order="11"
 sweep=""
 freq=[100k]
 nharm=10
@@ -194,7 +194,7 @@ nodeset=""
 store=""
 write=""
 }
-C {postproc.sym} 1160 1100 0 0 {name=postproc1
+C {postproc.sym} 1190 1560 0 0 {name=postproc1
 only_toplevel=false 
 order="12"
 tool="PYTHON"
@@ -210,3 +210,20 @@ verbatim="* A comment
 C {command_block.sym} 470 1110 0 0 {name=CMD
 only_toplevel=false
 }
+C {acstb.sym} 960 1320 0 0 {name=acstb1
+only_toplevel=false 
+order="9"
+sweep=""
+probe="\\"vfb\\""
+localgnd=""
+from=10
+to=100k
+step=""
+mode="\\"dec\\""
+points="10"
+values=""
+nodeset=""
+store=""
+write=""
+writeop=""
+}

xschem_library/analyses/lib_init.tcl

@@ -157,12 +157,18 @@ proc display_ac {symname} {
     return [format_props $symname $names]
 }
 
-# Display XF analysis
+# Display ACXF analysis
 proc display_acxf {symname} {
     set names [list sweep N outp N outn N from N to N step N mode N points N values N nodeset SG store N write N writeop N]
     return [format_props $symname $names]
 }
 
+# Display ACSTB analysis
+proc display_acstb {symname} {
+    set names [list sweep N probe N localgnd N from N to N step N mode N points N values N nodeset SG store N write N writeop N]
+    return [format_props $symname $names]
+}
+
 # Display NOISE analysis
 proc display_noise {symname} {
     set names [list sweep N outp N outn N in N from N to N step N mode N points N values N ptssum N nodeset SG store N write N writeop N]
@@ -385,6 +391,13 @@ proc format_analysis_acxf_spectre {name} {
     return [list "analysis $name acxf [parenthesize $args]" ""]
 }
 
+proc format_analysis_acstb_spectre {name} {
+    set args "[format_args $name [list probe N localgnd N]] "
+    append args "[format_sweep_spectre_range $name] "
+    append args [format_args $name [list nodeset N store N write N writeop N]]
+    return [list "analysis $name acstb [parenthesize $args]" ""]
+}
+
 proc format_analysis_noise_spectre {name} {
     set args "out=[format_signal_output_spectre $name] "
     append args "[format_args $name [list in N]] "
@@ -585,6 +598,10 @@ proc format_analysis_acxf_spice {name} {
     error "acxf is not supported by Ngspice"
 }
 
+proc format_analysis_acstb_spice {name} {
+    error "acstb is not supported by Ngspice"
+}
+
 proc format_analysis_noise_spice {name} {
     set output "[format_signal_output_spice $name]"
     set swp "[format_sweep_spice_range true $name]"