Reduce CRKBD firmware size by reducing layer numbers (#5471)

* Reduce CRKBD firmware size by reducing layer numbers

* Update layer output code based on mtei's suggestion/code

* Fix spacing

* Revert "Update layer output code based on mtei's suggestion/code"

This reverts commit 036d347db3.

Unfortunately, because this is NOT in the keymap itself, the layer macros aren't accessible and will error on commit

* Add comment for future person

keyboards/crkbd/keymaps/default/keymap.c

@@ -22,9 +22,9 @@ extern uint8_t is_master;
 // Layer names don't all need to be of the same length, obviously, and you can also skip them
 // entirely and just use numbers.
 #define _QWERTY 0
-#define _LOWER 3
-#define _RAISE 4
-#define _ADJUST 16
+#define _LOWER 1
+#define _RAISE 2
+#define _ADJUST 3
 
 enum custom_keycodes {
   QWERTY = SAFE_RANGE,
@@ -246,4 +246,3 @@ bool process_record_user(uint16_t keycode, keyrecord_t *record) {
   }
   return true;
 }
-

keyboards/crkbd/keymaps/omgvee/keymap.c

@@ -22,9 +22,9 @@ extern uint8_t is_master;
 // Layer names don't all need to be of the same length, obviously, and you can also skip them
 // entirely and just use numbers.
 #define _QWERTY 0
-#define _LOWER 3
-#define _RAISE 4
-#define _ADJUST 16
+#define _LOWER 1
+#define _RAISE 2
+#define _ADJUST 3
 
 enum custom_keycodes {
   QWERTY = SAFE_RANGE,
@@ -240,4 +240,3 @@ bool process_record_user(uint16_t keycode, keyrecord_t *record) {
   }
   return true;
 }
-

keyboards/crkbd/keymaps/thefrey/keymap.c

@@ -22,9 +22,9 @@ extern uint8_t is_master;
 // Layer names don't all need to be of the same length, obviously, and you can also skip them
 // entirely and just use numbers.
 #define _QWERTY 0
-#define _LOWER 3
-#define _RAISE 4
-#define _ADJUST 16
+#define _LOWER 1
+#define _RAISE 2
+#define _ADJUST 3
 
 enum custom_keycodes {
   QWERTY = SAFE_RANGE,
@@ -241,4 +241,3 @@ bool process_record_user(uint16_t keycode, keyrecord_t *record) {
   }
   return true;
 }
-

keyboards/crkbd/lib/layer_state_reader.c

@@ -3,11 +3,12 @@
 #include <stdio.h>
 #include "crkbd.h"
 
+// in the future, should use (1U<<_LAYER_NAME) instead, but needs to be moved to keymap,c
 #define L_BASE 0
-#define L_LOWER 8
-#define L_RAISE 16
-#define L_ADJUST 65536
-#define L_ADJUST_TRI 65560
+#define L_LOWER 2
+#define L_RAISE 4
+#define L_ADJUST 8
+#define L_ADJUST_TRI 14
 
 char layer_state_str[24];