initial commit of in-progress platformio/arduino code

fw/HackSpaceCon/platformio.ini

@@ -0,0 +1,32 @@
+; PlatformIO Project Configuration File
+;
+;   Build options: build flags, source filter
+;   Upload options: custom upload port, speed and extra flags
+;   Library options: dependencies, extra library storages
+;   Advanced options: extra scripting
+;
+; Please visit documentation for the other options and examples
+; https://docs.platformio.org/page/projectconf.html
+
+[env]
+platform = atmelmegaavr
+board = ATtiny402
+framework = arduino
+
+board_build.f_cpu = 8000000L
+
+
+[env:HackSpaceCon_Wand_Upload]
+# before you can debug, you need to install pymcuprog in platformio virtual environment.
+# python -m pip install pymcuprog
+upload_speed = 115200
+upload_flags =
+    --tool
+    uart
+    --device
+    attiny402
+    --uart
+    $UPLOAD_PORT
+    --clk
+    $UPLOAD_SPEED
+upload_command = pymcuprog write --erase $UPLOAD_FLAGS --filename $SOURCE