Add release variants for Arduion MKRWAN boards

Arduino MKRWAN boards only have USART2 connected, so the debugging
logger needs to be redirected there. MKRWAN1310 boards use PB6 to
control TCXO IC power instead of the default PA12.

Closes #109
Closes #108
Closes #107

tools/release.sh

@@ -74,9 +74,12 @@ $tar --exclude .git           \
     -zcf $name.tar.gz .
 echo "done."
 
-# Build both release and debug versions of the firmware binary
-make release
-make debug
+# Build both release and debug versions of the firmware binary. This is the
+# default build variant that uses PA12 (as recommended in the datasheet) to
+# control TCXO_VDD. Debug builds have a debugging logger on USART1.
+
+make TCXO_PIN=1 release
+make TCXO_PIN=1 DEBUG_PORT=1 debug
 
 # And copy the resulting biinary files into the current directory
 cp -f out/release/firmware.bin "$name.bin"
@@ -85,9 +88,32 @@ cp -f out/debug/firmware.bin   "$name.debug.bin"
 cp -f out/debug/firmware.hex   "$name.debug.hex"
 cp -f out/debug/firmware.map   "$name.debug.map"
 
+# Now build the variants for Arduino MKRWAN boards. These build variants use PB6
+# to control TCXO power. Debug builds start the debugging logger on USART2.
+
+make clean
+make TCXO_PIN=2 release
+make TCXO_PIN=2 DEBUG_PORT=2 debug
+
+# And copy the resulting biinary files into the current directory
+cp -f out/release/firmware.bin "$name.mkrwan.bin"
+cp -f out/release/firmware.hex "$name.mkrwan.hex"
+cp -f out/debug/firmware.bin   "$name.debug.mkrwan.bin"
+cp -f out/debug/firmware.hex   "$name.debug.mkrwan.hex"
+cp -f out/debug/firmware.map   "$name.debug.mkrwan.map"
+
 # Compute SHA-256 checksums of the binary files
-checksums=$(sha256sum -b "$name.bin" "$name.hex" \
-    "$name.debug.bin" "$name.debug.hex" "$name.debug.map" \
+checksums=$(sha256sum -b \
+    "$name.bin" \
+    "$name.hex" \
+    "$name.debug.bin" \
+    "$name.debug.hex" \
+    "$name.debug.map" \
+    "$name.mkrwan.bin" \
+    "$name.mkrwan.hex" \
+    "$name.debug.mkrwan.bin" \
+    "$name.debug.mkrwan.hex" \
+    "$name.debug.mkrwan.map" \
     "$name.tar.gz")
 
 # Generate a signed version of the checksums
@@ -98,14 +124,19 @@ git push origin "$new_tag"
 
 # And create new draft release for the tag with all the generated files
 # attached.
-hub release create       \
-    -d                   \
-    -a "$name.bin"       \
-    -a "$name.hex"       \
-    -a "$name.debug.bin" \
-    -a "$name.debug.hex" \
-    -a "$name.debug.map" \
-    -a "$name.tar.gz"    \
+hub release create              \
+    -d                          \
+    -a "$name.bin"              \
+    -a "$name.hex"              \
+    -a "$name.debug.bin"        \
+    -a "$name.debug.hex"        \
+    -a "$name.debug.map"        \
+    -a "$name.mkrwan.bin"       \
+    -a "$name.mkrwan.hex"       \
+    -a "$name.debug.mkrwan.bin" \
+    -a "$name.debug.mkrwan.hex" \
+    -a "$name.debug.mkrwan.map" \
+    -a "$name.tar.gz"           \
     -F - $new_tag << EOF
 Release $version