From 5847c841cf89666790c39a639f25e4c50979475c Mon Sep 17 00:00:00 2001
From: tbeu <tc@tbeu.de>
Date: Fri, 31 May 2024 22:53:27 +0200
Subject: [PATCH] Add basic example demonstrating fixed and start attribute of
 state variable

---
 .../BasicEquations/SimpleExample/FirstOrderStart.mo        | 7 +++++++
 .../BasicEquations/SimpleExample/package.order             | 1 +
 2 files changed, 8 insertions(+)
 create mode 100644 ModelicaByExample/BasicEquations/SimpleExample/FirstOrderStart.mo

diff --git a/ModelicaByExample/BasicEquations/SimpleExample/FirstOrderStart.mo b/ModelicaByExample/BasicEquations/SimpleExample/FirstOrderStart.mo
new file mode 100644
index 00000000..017d3183
--- /dev/null
+++ b/ModelicaByExample/BasicEquations/SimpleExample/FirstOrderStart.mo
@@ -0,0 +1,7 @@
+within ModelicaByExample.BasicEquations.SimpleExample;
+model FirstOrderStart "First order equation with fixed start value"
+  Real x(start=x_start, fixed=true) "State variable";
+  parameter Real x_start=2 "Start value";
+equation
+  der(x) = 1-x "Drives value of x toward 1.0";
+end FirstOrderStart;
diff --git a/ModelicaByExample/BasicEquations/SimpleExample/package.order b/ModelicaByExample/BasicEquations/SimpleExample/package.order
index 895d9bbf..f99ff23e 100644
--- a/ModelicaByExample/BasicEquations/SimpleExample/package.order
+++ b/ModelicaByExample/BasicEquations/SimpleExample/package.order
@@ -1,5 +1,6 @@
 FirstOrder
 FirstOrderDocumented
 FirstOrderInitial
+FirstOrderStart
 FirstOrderExperiment
 FirstOrderSteady