diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..7f58644
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+/.pio
diff --git a/README.md b/README.md
index 681145c..3bb9848 100644
--- a/README.md
+++ b/README.md
@@ -2,7 +2,7 @@
 
 This is a simple tool for sending and receiving USB-PD VDM messages using a FUSB302, based on [usb-c-arduino](https://github.com/graycatlabs/usb-c-arduino).
 
-USB-PD VDM documentation is [here](https://github.com/AsahiLinux/docs/wiki/Hardware:USB-PD)
+USB-PD VDM documentation is [here](https://asahilinux.org/docs/hw/soc/usb-pd/)
 
 # Wiring
 #### Bare FUSB
diff --git a/platformio.ini b/platformio.ini
new file mode 100644
index 0000000..9bf1a24
--- /dev/null
+++ b/platformio.ini
@@ -0,0 +1,7 @@
+[platformio]
+src_dir = vdmtool
+
+[env:nano_every]
+platform = atmelmegaavr
+board = nano_every
+framework = arduino
diff --git a/vdmtool/vdmtool.ino b/vdmtool/vdmtool.ino
index 1c7c993..a6efa35 100644
--- a/vdmtool/vdmtool.ino
+++ b/vdmtool/vdmtool.ino
@@ -320,6 +320,8 @@ void evt_packet(void) {
   handle_msg(sop, hdr, msg);
 }
 
+void vdm_fun();
+
 void evt_sent(void) {
   switch (st) {
     case STATE_DFP_VBUS_ON: