Use an internal device in /tmp if VIRTUALDEVICE is an empty string

pfichtner · Feb 1, 2025 · da8f76a · da8f76a
1 parent a9f1070
commit da8f76a
Show file tree

Hide file tree

Showing 2 changed files with 3 additions and 1 deletion.
diff --git a/README.md b/README.md
@@ -144,7 +144,6 @@ For a complete python gherkin example see https://github.com/pfichtner/virtualav
 ![virtualavr.png](docs/images/virtualavr.png)
 
 # Todos
-- Add support for running simulator without VIRTUALDEVICE (VIRTUALDEVICE="")
 - Provide Java Bindings as maven artefacts
 - Add an example (jest?): How to test firmware, e.g. firmware reading DHT22 values and writing infos/warnings to console/SSD1306
 - We could use WS also to load firmware

diff --git a/entrypoint.sh b/entrypoint.sh
@@ -5,5 +5,8 @@ cd /sketch
 FILENAME=${FILENAME:-'sketch.ino'}
 BAUDRATE=${BAUDRATE:-9600}
 
+# Create a temporary file if VIRTUALDEVICE is explicitly set to an empty string
+[ -v VIRTUALDEVICE ] && [ -z "$VIRTUALDEVICE" ] && VIRTUALDEVICE=$(mktemp /tmp/virtualavrXXXX)
+
 socat ${VERBOSITY:-} pty,rawer,link=${VIRTUALDEVICE:-'/dev/virtualavr0'},user=${DEVICEUSER:-'root'},group=${DEVICEGROUP:-'dialout'},mode=${DEVICEMODE:-660},b$BAUDRATE EXEC:"node /app/virtualavr.js $FILENAME",pty,rawer,fdin=3,fdout=4