twiddling things trying to get drums working on CH

`arduino-builder` lets you override stuff from `boards.txt`.
That's nice, because the way I was doing it before was bananas.

.gitea/publish.sh

@@ -16,6 +16,11 @@ for path in "$@"; do
   fn=$(basename "$path")
   echo "=== Upload $VERSION/$fn"
 
+  curl \
+    --user "$GITHUB_ACTOR:$PACKAGE_API_TOKEN" \
+    --request DELETE \
+    $BASE/$fn
+
   curl \
     --fail \
     --user "$GITHUB_ACTOR:$PACKAGE_API_TOKEN" \

Makefile

@@ -15,6 +15,11 @@ firmwares: build/MockBand.drums.hex
 build/MockBand.drums.hex: VID=0x1bad
 build/MockBand.drums.hex: PID=0x3110
 
+firmwares: build/MockBand.drums1.hex
+build/MockBand.drums1.hex: VID=0x1bad
+build/MockBand.drums1.hex: PID=00005
+
+
 build/MockBand.%.hex: MockBand.ino
 	mkdir -p build/cache
 	rm -f build/build.options.json

MockBand.ino

@@ -142,8 +142,8 @@ void loop() {
     }
 #else // DRUMS
     buttonState.buttons |= (buttons >> 10) & 0b01011;   // Cymbals
-    bitWrite(buttonState.buttons, 10, buttons & (0b01111 <<  0));  // Drum pad modifier
+    bitWrite(buttonState.buttons, 10, (buttons >>  0) & 0b01111);  // Drum pad modifier
-    bitWrite(buttonState.buttons, 11, buttons & (0b01011 << 10));  // Cymbals modifier
+    bitWrite(buttonState.buttons, 11, (buttons >> 10) & 0b01011);  // Cymbals modifier
     buttonState.axis[3] = bitRead(buttons, 12)?255:0;   // High hat
 
     // rbdrum2midi wants these set
@@ -152,14 +152,8 @@ void loop() {
     buttonState.velocity[2] = bitRead(buttonState.buttons, 1)?127:0; // G
     buttonState.velocity[3] = bitRead(buttonState.buttons, 0)?127:0; // B
 
-    // Use the cymbals for up and down, since I don't have a D-pad
+    // Say the D-pad is centered
-    if bitRead(buttons, 13) {
+    buttonState.hatAndConstant = 8;
-      buttonState.hatAndConstant = 0; // up
-    } else if bitRead(buttons, 10) {
-      buttonState.hatAndConstant = 4; // down
-    } else {
-      buttonState.hatAndConstant = 8; // nothing
-    }
 #endif
 
 #ifdef DPAD

docs/tech-notes.md

@@ -70,13 +70,19 @@ Here's what each bit means:
 hatAndConstant
 --------------
 
-Here's what the values mean:
+The HAT switch reports its position like a clock.
 
-* 2: right
+    7   0   1
-* 6: left
+
-* 0: up
+    6   8   2
-* 4: down
+
-* 8: nothing
+    5   4   3
+
+0 is up,
+2 is right,
+4 is down,
+6 is left,
+and 8 is centered.
 
 
 velocity