Remove the unnecessary for loop

keyboards/clueboard/2x1800/2019/2019.c

@@ -43,12 +43,10 @@ void matrix_scan_kb(void) {
     uint8_t tilt_read = (readPin(SHAKE_PIN_A) << 4) | readPin(SHAKE_PIN_B);
 
     // Check to see if the tilt sensor has changed state since our last read
-    for (uint8_t i = 0; i < 2; i++) {
-        if (tilt_state != tilt_read) {
-            shake_timer = timer_read();
-            detected_shakes++;
-            tilt_state = tilt_read;
-        }
+    if (tilt_state != tilt_read) {
+        shake_timer = timer_read();
+        detected_shakes++;
+        tilt_state = tilt_read;
     }
 
     if ((detected_shakes > 0) && (timer_elapsed(shake_timer) > SHAKE_TIMEOUT)) {
@@ -66,6 +64,12 @@ void matrix_scan_kb(void) {
 }
 
 bool process_record_kb(uint16_t keycode, keyrecord_t *record) {
+    if (record->event.pressed) {
+        if (keycode == ENC_BTN1) {
+            
+        }
+    }
+
     return process_record_user(keycode, record);
 }
 

keyboards/clueboard/2x1800/2019/2019.h

@@ -17,6 +17,17 @@
 
 #include "quantum.h"
 
+enum TWOx1800_keycodes {
+    ENC_BTN1 = SAFE_RANGE,
+    ENC_BTN2,
+    ENC_BTN3,
+    ENC_BTN4,
+    NEW_SAFE_RANGE
+};
+
+#undef SAFE_RANGE
+#define SAFE_RANGE NEW_SAFE_RANGE
+
 // This a shortcut to help you visually see your layout.
 // The first section contains all of the arguments
 // The second converts the arguments into a two-dimensional array

keyboards/clueboard/2x1800/2019/config.h

@@ -15,8 +15,7 @@ You should have received a copy of the GNU General Public License
 along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
-#ifndef CONFIG_H
-#define CONFIG_H
+#pragma once
 
 #include "config_common.h"
 
@@ -197,7 +196,13 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 /* override number of MIDI tone keycodes (each octave adds 12 keycodes and allocates 12 bytes) */
 //#define MIDI_TONE_KEYCODE_OCTAVES 1
 
-#endif
+/*
+ * Drawing mode
+ */
+#define DRAWING_ENABLE
+//#define UNDO_KEY LGUI(KC_Z)  // What key to send for undo
+//#define UNDO_KEY LCTL(KC_Z)
+#define UNDO_KEY LGUI(KC_SLSH)
 
 /*
  * Shake to undo configuration
@@ -207,6 +212,4 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define SHAKE_PIN_B E5
 #define SHAKE_TIMEOUT 500     // How long after shaking stops before we register it
 #define SHAKE_COUNT 8         // How many shakes it takes to activate
-//#define SHAKE_KEY LGUI(KC_Z)  // What key to send after a shake
-//#define SHAKE_KEY LCTL(KC_Z)
-#define SHAKE_KEY LGUI(KC_SLSH)
+#define SHAKE_KEY UNDO_KEY    // What key to send after a shake

keyboards/clueboard/2x1800/2019/keymaps/default/keymap.c

@@ -17,7 +17,7 @@
 
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
 [0] = LAYOUT_all( \
-                                 KC_BTN1,    KC_BTN2,                                                                                                                 KC_BTN3,    KC_BTN4,                            \
+                                 ENC_BTN1,    ENC_BTN2,                                                                                                                 ENC_BTN3,    ENC_BTN4,                            \
       KC_HOME, KC_END,  KC_PGUP, KC_PGDN,       KC_ESC,    KC_F1,   KC_F2,   KC_F3,   KC_F4,     KC_F5,   KC_F6,   KC_F7,   KC_F8,     KC_F9,   KC_F10,   KC_F11,  KC_F12,        KC_PSCR, KC_SLCK, KC_PAUS, KC_INS,  \
                                                                                                                                                                                                                       \
       KC_PMNS, KC_NLCK, KC_PSLS, KC_PAST,      KC_GRV,  KC_1,    KC_2,    KC_3,    KC_4,    KC_5,    KC_6,    KC_7,    KC_8,    KC_9,    KC_0,    KC_MINS, KC_EQL,   KC_BSPC,     KC_NLCK, KC_PSLS, KC_PAST, KC_PMNS, \