From aaa2be120071e2b1bba03147691da47d2af1ddae Mon Sep 17 00:00:00 2001
From: Kong Wai Weng <waiweng83@gmail.com>
Date: Mon, 12 Sep 2022 18:19:33 +0800
Subject: [PATCH 1/3] Set the default pin state for GPIOs to pull down.

---
 .../cytron_maker_feather_aiot_s3/board.c      | 41 +++++++++++++++++++
 .../mpconfigboard.h                           |  1 +
 2 files changed, 42 insertions(+)

diff --git a/ports/espressif/boards/cytron_maker_feather_aiot_s3/board.c b/ports/espressif/boards/cytron_maker_feather_aiot_s3/board.c
index 7ddb33fa45..67f2c8d17a 100644
--- a/ports/espressif/boards/cytron_maker_feather_aiot_s3/board.c
+++ b/ports/espressif/boards/cytron_maker_feather_aiot_s3/board.c
@@ -35,6 +35,47 @@ void board_init(void) {
     reset_board();
 }
 
+bool espressif_board_reset_pin_number(gpio_num_t pin_number) {
+    // For GPIOs used in Maker Feather AIoT S3, set the default state to pull down
+    // as most of them are connected to active high LED.
+    switch (pin_number) {
+        case 4:
+        case 5:
+        case 6:
+        case 7:
+        case 8:
+        case 9:
+        case 10:
+        case 12:
+        case 14:
+        case 15:
+        case 16:
+        case 17:
+        case 18:
+        case 21:
+        case 38:
+        case 39:
+        case 40:
+        case 41:
+        case 42:
+        case 47:
+        case 48:
+            gpio_reset_pin(pin_number);
+            gpio_pullup_dis(pin_number);
+            gpio_pulldown_en(pin_number);
+            return true;
+            
+        // Do not pull up/down as this is the battery voltage monitoring pin.
+        case 13:
+            gpio_reset_pin(pin_number);
+            gpio_pullup_dis(pin_number);
+            gpio_pulldown_dis(pin_number);
+            return true;
+    }
+    
+    return false;
+}
+
 void reset_board(void) {
     // Turn on VP by default.
     gpio_set_direction(11, GPIO_MODE_DEF_OUTPUT);
diff --git a/ports/espressif/boards/cytron_maker_feather_aiot_s3/mpconfigboard.h b/ports/espressif/boards/cytron_maker_feather_aiot_s3/mpconfigboard.h
index 14512efd9d..39c1edc5bd 100644
--- a/ports/espressif/boards/cytron_maker_feather_aiot_s3/mpconfigboard.h
+++ b/ports/espressif/boards/cytron_maker_feather_aiot_s3/mpconfigboard.h
@@ -30,6 +30,7 @@
 #define MICROPY_HW_MCU_NAME         "ESP32S3"
 
 #define MICROPY_HW_NEOPIXEL (&pin_GPIO46)
+#define CIRCUITPY_STATUS_LED_POWER (&pin_GPIO11)
 
 #define MICROPY_HW_LED_STATUS (&pin_GPIO2)
 

From 0ae015e4d9da9a938b5c960f02475b553431ca91 Mon Sep 17 00:00:00 2001
From: Kong Wai Weng <waiweng83@gmail.com>
Date: Mon, 12 Sep 2022 18:25:27 +0800
Subject: [PATCH 2/3] Removed whitespaces.

---
 ports/espressif/boards/cytron_maker_feather_aiot_s3/board.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/ports/espressif/boards/cytron_maker_feather_aiot_s3/board.c b/ports/espressif/boards/cytron_maker_feather_aiot_s3/board.c
index 67f2c8d17a..f86996eb12 100644
--- a/ports/espressif/boards/cytron_maker_feather_aiot_s3/board.c
+++ b/ports/espressif/boards/cytron_maker_feather_aiot_s3/board.c
@@ -64,7 +64,7 @@ bool espressif_board_reset_pin_number(gpio_num_t pin_number) {
             gpio_pullup_dis(pin_number);
             gpio_pulldown_en(pin_number);
             return true;
-            
+
         // Do not pull up/down as this is the battery voltage monitoring pin.
         case 13:
             gpio_reset_pin(pin_number);
@@ -72,7 +72,7 @@ bool espressif_board_reset_pin_number(gpio_num_t pin_number) {
             gpio_pulldown_dis(pin_number);
             return true;
     }
-    
+
     return false;
 }
 

From c157f1cb3973f11995b30a424f2459b1a089e7a6 Mon Sep 17 00:00:00 2001
From: Kong Wai Weng <waiweng83@gmail.com>
Date: Mon, 12 Sep 2022 18:56:15 +0800
Subject: [PATCH 3/3] Cast pin_number to int8_t so that it can be used with
 switch-case.

---
 ports/espressif/boards/cytron_maker_feather_aiot_s3/board.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/ports/espressif/boards/cytron_maker_feather_aiot_s3/board.c b/ports/espressif/boards/cytron_maker_feather_aiot_s3/board.c
index f86996eb12..1f9ef3c4e7 100644
--- a/ports/espressif/boards/cytron_maker_feather_aiot_s3/board.c
+++ b/ports/espressif/boards/cytron_maker_feather_aiot_s3/board.c
@@ -38,7 +38,7 @@ void board_init(void) {
 bool espressif_board_reset_pin_number(gpio_num_t pin_number) {
     // For GPIOs used in Maker Feather AIoT S3, set the default state to pull down
     // as most of them are connected to active high LED.
-    switch (pin_number) {
+    switch ((int8_t)pin_number) {
         case 4:
         case 5:
         case 6: