Update firmware documentation and agent guidance

2026-07-24 09:27:07 +02:00
parent ac3b2aa90f
commit 50dbf8fbee
26 changed files with 592 additions and 196 deletions
@@ -19,7 +19,7 @@
 #define BTN_COL_COUNT  5
 #define BTN_ROW_COUNT  5

-// Column pins: driven OUTPUT LOW during scan, otherwise INPUT (high-Z or HIGH)
+// Column pins: INPUT; external 10k pull-ups hold them HIGH.
 static const uint8_t BTN_COLS[BTN_COL_COUNT] = {
    PIN_COL0,   // PB10  – encoder SW column
    PIN_COL1,   // PA11  – Cherry MX col 1 (leftmost)
@@ -28,7 +28,7 @@ static const uint8_t BTN_COLS[BTN_COL_COUNT] = {
    PIN_COL4,   // PA08  – Cherry MX col 4 (rightmost)
 };

-// Row pins: INPUT_PULLUP, read LOW when button pressed
+// Row pins: idle INPUT (high-Z), driven OUTPUT LOW one at a time during scan.
 static const uint8_t BTN_ROWS[BTN_ROW_COUNT] = {
    PIN_ROW0,   // PB11
    PIN_ROW1,   // PA12