Keyboard: ALT keymap update and LED driver brightness mismatch fix (#3890)

* ALT keymap update

Added additional End key on layer 1 to match key cap

* LED driver update addressing PR #3871

Update sync between IS31FL3733 drivers is causing varying behavior in keyboards including brightness mismatch and slight flicker at very low rgb values. Visually, disabling sync is not noticeable. Ref PR #3871 by guarnacciaa.

keyboards/massdrop/alt/keymaps/default/keymap.c

@@ -36,7 +36,7 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
     ),
     [1] = LAYOUT(
         KC_GRV,  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_TRNS, KC_MUTE, \
-        L_T_BR,  L_PSD,   L_BRI,   L_PSI,   KC_TRNS, KC_TRNS, KC_TRNS, U_T_AUTO,U_T_AGCR,KC_TRNS, KC_PSCR, KC_SLCK, KC_PAUS, KC_TRNS, KC_TRNS, \
+        L_T_BR,  L_PSD,   L_BRI,   L_PSI,   KC_TRNS, KC_TRNS, KC_TRNS, U_T_AUTO,U_T_AGCR,KC_TRNS, KC_PSCR, KC_SLCK, KC_PAUS, KC_TRNS, KC_END, \
         L_T_PTD, L_PTP,   L_BRD,   L_PTN,   KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,          KC_TRNS, KC_VOLU, \
         KC_TRNS, L_T_MD,  L_T_ONF, KC_TRNS, KC_TRNS, MD_BOOT, TG_NKRO, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,          KC_PGUP, KC_VOLD, \
         KC_TRNS, KC_TRNS, KC_TRNS,                            KC_TRNS,                            KC_TRNS, KC_TRNS, KC_HOME, KC_PGDN, KC_END  \

keyboards/massdrop/alt/keymaps/mac/keymap.c

@@ -36,7 +36,7 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
     ),
     [1] = LAYOUT(
         KC_GRV,  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_TRNS, KC_MUTE, \
-        L_T_BR,  L_PSD,   L_BRI,   L_PSI,   KC_TRNS, KC_TRNS, KC_TRNS, U_T_AUTO,U_T_AGCR,KC_TRNS, KC_PSCR, KC_SLCK, KC_PAUS, KC_TRNS, KC_TRNS, \
+        L_T_BR,  L_PSD,   L_BRI,   L_PSI,   KC_TRNS, KC_TRNS, KC_TRNS, U_T_AUTO,U_T_AGCR,KC_TRNS, KC_PSCR, KC_SLCK, KC_PAUS, KC_TRNS, KC_END, \
         L_T_PTD, L_PTP,   L_BRD,   L_PTN,   KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,          KC_TRNS, KC_VOLU, \
         KC_TRNS, L_T_MD,  L_T_ONF, KC_TRNS, KC_TRNS, MD_BOOT, TG_NKRO, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,          KC_PGUP, KC_VOLD, \
         KC_TRNS, KC_TRNS, KC_TRNS,                            KC_TRNS,                            KC_TRNS, KC_TRNS, KC_HOME, KC_PGDN, KC_END  \

tmk_core/protocol/arm_atsam/i2c_master.c

@@ -289,12 +289,12 @@ uint8_t I2C3733_Init_Drivers(void)
     //Set up master device
     i2c_led_send_CRWL(0);
     i2c_led_select_page(0, 3);
-    i2c_led_send_mode_op_gcr(0, ISSI3733_CR_SYNC_MASTER, ISSI3733_CR_SSD_NORMAL);
+    i2c_led_send_mode_op_gcr(0, 0, ISSI3733_CR_SSD_NORMAL); //No SYNC due to brightness mismatch with second driver
 
     //Set up slave device
     i2c_led_send_CRWL(1);
     i2c_led_select_page(1, 3);
-    i2c_led_send_mode_op_gcr(1, ISSI3733_CR_SYNC_SLAVE, ISSI3733_CR_SSD_NORMAL);
+    i2c_led_send_mode_op_gcr(1, 0, ISSI3733_CR_SSD_NORMAL); //No SYNC due to brightness mismatch with first driver and slight flicker at rgb values 1,2
 
     i2c_led_send_CRWL(0);
     i2c_led_select_page(0, 3);