From dd43e2ac87566a14c32a38a142126afa62ffba93 Mon Sep 17 00:00:00 2001
From: Michal Moskal <michal@moskal.me>
Date: Thu, 13 Feb 2020 13:11:50 -0800
Subject: [PATCH 1/7] Allow for skipping bootloader double-reset wait

---
 src/main.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/main.c b/src/main.c
index 5a74640..2750e0e 100644
--- a/src/main.c
+++ b/src/main.c
@@ -105,6 +105,7 @@ void usb_teardown(void);
 #define DFU_MAGIC_UF2_RESET             0x57
 
 #define DFU_DBL_RESET_MAGIC             0x5A1AD5      // SALADS
+#define DFU_DBL_RESET_APP               0x4ee5677e
 #define DFU_DBL_RESET_DELAY             500
 #define DFU_DBL_RESET_MEM               0x20007F7C
 
@@ -197,9 +198,10 @@ int main(void)
   _ota_dfu = _ota_dfu  || ( button_pressed(BUTTON_DFU) && button_pressed(BUTTON_FRESET) ) ;
 
   bool const valid_app = bootloader_app_is_valid(DFU_BANK_0_REGION_START);
+  bool const just_start_app = valid_app && !dfu_start && (*dbl_reset_mem) == DFU_DBL_RESET_APP;
 
   // App mode: register 1st reset and DFU startup (nrf52832)
-  if ( ! (dfu_start || !valid_app) )
+  if ( ! (just_start_app || dfu_start || !valid_app) )
   {
     // Register our first reset for double reset detection
     (*dbl_reset_mem) = DFU_DBL_RESET_MAGIC;

From c5c2039bfd98debf51a179a3bded4c7d3c8686a8 Mon Sep 17 00:00:00 2001
From: Michal Moskal <michal@moskal.me>
Date: Thu, 13 Feb 2020 17:06:09 -0800
Subject: [PATCH 2/7] Add support for bootloader pin config data for Arcade

---
 Makefile                                      |   1 +
 .../arcade_feather_nrf52840_express/board.h   | 143 ++++++++++++++++++
 .../arcade_feather_nrf52840_express/board.mk  |   1 +
 src/linker/nrf52840_s140_v6.ld                |   9 +-
 src/pinconfig.c                               |   6 +
 5 files changed, 159 insertions(+), 1 deletion(-)
 create mode 100644 src/boards/arcade_feather_nrf52840_express/board.h
 create mode 100644 src/boards/arcade_feather_nrf52840_express/board.mk
 create mode 100644 src/pinconfig.c

diff --git a/Makefile b/Makefile
index 372828b..2a89a97 100644
--- a/Makefile
+++ b/Makefile
@@ -115,6 +115,7 @@ C_SOURCE_FILES += $(SRC_PATH)/boards.c
 C_SOURCE_FILES += $(SRC_PATH)/flash_nrf5x.c
 C_SOURCE_FILES += $(SRC_PATH)/dfu_ble_svc.c
 C_SOURCE_FILES += $(SRC_PATH)/dfu_init.c
+C_SOURCE_FILES += $(SRC_PATH)/pinconfig.c
 
 # nrfx
 C_SOURCE_FILES += $(NRFX_PATH)/drivers/src/nrfx_power.c
diff --git a/src/boards/arcade_feather_nrf52840_express/board.h b/src/boards/arcade_feather_nrf52840_express/board.h
new file mode 100644
index 0000000..9f5adba
--- /dev/null
+++ b/src/boards/arcade_feather_nrf52840_express/board.h
@@ -0,0 +1,143 @@
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2018 Ha Thach for Adafruit Industries
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#ifndef _FEATHER_NRF52840_H
+#define _FEATHER_NRF52840_H
+
+#define _PINNUM(port, pin)    ((port)*32 + (pin))
+
+/*------------------------------------------------------------------*/
+/* LED
+ *------------------------------------------------------------------*/
+#define LEDS_NUMBER           2
+#define LED_PRIMARY_PIN       _PINNUM(1, 15)
+#define LED_SECONDARY_PIN     _PINNUM(1, 10)
+#define LED_STATE_ON          1
+
+#define LED_NEOPIXEL           _PINNUM(0, 16)
+#define NEOPIXELS_NUMBER      1
+#define BOARD_RGB_BRIGHTNESS  0x040404
+
+/*------------------------------------------------------------------*/
+/* BUTTON
+ *------------------------------------------------------------------*/
+#define BUTTONS_NUMBER        2
+#define BUTTON_1              _PINNUM(1, 02)
+#define BUTTON_2              _PINNUM(0, 10)
+#define BUTTON_PULL           NRF_GPIO_PIN_PULLUP
+
+/*------------------------------------------------------------------*/
+/* UART (only used by nRF52832)
+ *------------------------------------------------------------------*/
+#define RX_PIN_NUMBER         8
+#define TX_PIN_NUMBER         6
+#define CTS_PIN_NUMBER        0
+#define RTS_PIN_NUMBER        0
+#define HWFC                  false
+
+//--------------------------------------------------------------------+
+// BLE OTA
+//--------------------------------------------------------------------+
+#define BLEDIS_MANUFACTURER   "Adafruit Industries"
+#define BLEDIS_MODEL          "Feather nRF52840 Express"
+
+//--------------------------------------------------------------------+
+// USB
+//--------------------------------------------------------------------+
+#define USB_DESC_VID           0x239A
+#define USB_DESC_UF2_PID       0x0029
+#define USB_DESC_CDC_ONLY_PID  0x002A
+
+//------------- UF2 -------------//
+#define UF2_PRODUCT_NAME      "Adafruit Feather nRF52840 Express"
+#define UF2_VOLUME_LABEL      "ARCADE-N4"
+#define UF2_BOARD_ID          "nRF52840-Feather-revD"
+#define UF2_INDEX_URL         "https://www.adafruit.com/product/4062"
+
+#ifdef DEFINE_BOOTLOADER_CONFIG
+#define BOOTLOADER_CONFIG_PRESENT 1
+__attribute__((used, section(".bootloaderConfig")))
+const uint32_t bootloaderConfig[] = {
+    /* CF2 START */
+    513675505, 539130489, // magic
+    49, 100,  // used entries, total entries
+    4, 0x18, // PIN_BTN_A = PIN_RX
+    5, 0xa, // PIN_BTN_B = PIN_D2
+    13, 0x29, // PIN_LED = PIN_D13
+    18, 0xf, // PIN_MISO = PA15
+    19, 0xd, // PIN_MOSI = PA13
+    20, 0x23, // PIN_NEOPIXEL = PB03
+    21, 0x18, // PIN_RX = PA24
+    23, 0xe, // PIN_SCK = PA14
+    24, 0xb, // PIN_SCL = PA11
+    25, 0xc, // PIN_SDA = PA12
+    28, 0x19, // PIN_TX = PA25
+    32, 0xe, // PIN_DISPLAY_SCK = PIN_SCK
+    34, 0xd, // PIN_DISPLAY_MOSI = PIN_MOSI
+    35, 0x1e, // PIN_DISPLAY_CS = PIN_A2
+    36, 0x1c, // PIN_DISPLAY_DC = PIN_A3
+    37, 0xa0, // DISPLAY_WIDTH = 160
+    38, 0x80, // DISPLAY_HEIGHT = 128
+    39, 0x80, // DISPLAY_CFG0 = 0x80
+    40, 0x603, // DISPLAY_CFG1 = 0x603
+    41, 0x20, // DISPLAY_CFG2 = 0x20
+    43, 0x2, // PIN_DISPLAY_RST = PIN_A4
+    44, 0x3, // PIN_DISPLAY_BL = PIN_A5
+    47, 0x6, // PIN_BTN_LEFT = PIN_D11
+    48, 0x1a, // PIN_BTN_RIGHT = PIN_D9
+    49, 0x1b, // PIN_BTN_UP = PIN_D10
+    50, 0x7, // PIN_BTN_DOWN = PIN_D6
+    51, 0x8, // PIN_BTN_MENU = PIN_D12
+    56, 0x2a, // PIN_LED2 = PB10
+    60, 0x19, // PIN_JACK_TX = PIN_TX
+    100, 0x4, // PIN_A0 = PA04
+    101, 0x5, // PIN_A1 = PA05
+    102, 0x1e, // PIN_A2 = PA30
+    103, 0x1c, // PIN_A3 = PA28
+    104, 0x2, // PIN_A4 = PA02
+    105, 0x3, // PIN_A5 = PA03
+    152, 0xa, // PIN_D2 = PA10
+    155, 0x28, // PIN_D5 = PB08
+    156, 0x7, // PIN_D6 = PA07
+    159, 0x1a, // PIN_D9 = PA26
+    160, 0x1b, // PIN_D10 = PA27
+    161, 0x6, // PIN_D11 = PA06
+    162, 0x8, // PIN_D12 = PA08
+    163, 0x29, // PIN_D13 = PB09
+    200, 0x1, // NUM_NEOPIXELS = 1
+    204, 0x100000, // FLASH_BYTES = 0x100000
+    205, 0x40000, // RAM_BYTES = 0x40000
+    208, 0xd7688ea1, // BOOTLOADER_BOARD_ID = 0xd7688ea1
+    209, 0xada52840, // UF2_FAMILY = 0xada52840
+    210, 0x20, // PINS_PORT_SIZE = PA_32
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0,
+    /* CF2 END */
+};
+#endif
+
+#endif // _FEATHER_NRF52840_H
+
diff --git a/src/boards/arcade_feather_nrf52840_express/board.mk b/src/boards/arcade_feather_nrf52840_express/board.mk
new file mode 100644
index 0000000..9d29ac6
--- /dev/null
+++ b/src/boards/arcade_feather_nrf52840_express/board.mk
@@ -0,0 +1 @@
+MCU_SUB_VARIANT = nrf52840
diff --git a/src/linker/nrf52840_s140_v6.ld b/src/linker/nrf52840_s140_v6.ld
index bddaa26..cbc2286 100644
--- a/src/linker/nrf52840_s140_v6.ld
+++ b/src/linker/nrf52840_s140_v6.ld
@@ -11,7 +11,9 @@ MEMORY
    *  those values do not match. The check is performed in main.c, see
    *  APP_ERROR_CHECK_BOOL(*((uint32_t *)NRF_UICR_BOOT_START_ADDRESS) == BOOTLOADER_REGION_START);
    */
-  FLASH (rx) : ORIGIN = 0xF4000, LENGTH = 0xFE000-0xF4000 /* 40 KB */
+  FLASH (rx) : ORIGIN = 0xF4000, LENGTH = 0xFE000-0xF4000-1024 /* 39 KB */
+
+  BOOTLOADER_CONFIG (r): ORIGIN = 0xFE000 - 1024, LENGTH = 1024
 
   /** Location of mbr params page in flash. */
   MBR_PARAMS_PAGE (rw) : ORIGIN = 0xFE000, LENGTH = 0x1000
@@ -50,6 +52,11 @@ SECTIONS
     PROVIDE( __stop_fs_data = .);
   } = 0
 
+  .bootloaderConfig :
+  {
+    KEEP(*(.bootloaderConfig))
+  } > BOOTLOADER_CONFIG
+
   /* Place the bootloader settings page in flash. */
   .bootloaderSettings(NOLOAD) :
   {
diff --git a/src/pinconfig.c b/src/pinconfig.c
new file mode 100644
index 0000000..a4202d9
--- /dev/null
+++ b/src/pinconfig.c
@@ -0,0 +1,6 @@
+#define DEFINE_BOOTLOADER_CONFIG 1
+#include "boards.h"
+
+#if defined(BOOTLOADER_CONFIG_PRESENT) && BOOTLOADER_CONFIG_PRESENT
+// nothing yet
+#endif

From 563f15158db9cc8a414fb16b16df7960348df3c3 Mon Sep 17 00:00:00 2001
From: Michal Moskal <michal@moskal.me>
Date: Thu, 13 Feb 2020 17:14:37 -0800
Subject: [PATCH 3/7] Add gdbflash target using BMP

---
 Makefile | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/Makefile b/Makefile
index 2a89a97..5ec07b6 100644
--- a/Makefile
+++ b/Makefile
@@ -41,6 +41,9 @@ else
 NRFJPROG = nrfjprog
 endif
 
+# auto-detect BMP on macOS, otherwise have to specify
+BMP_PORT ?= $(shell ls -1 /dev/cu.usbmodem????????1 | head -1)
+
 ifeq ($(OS),Windows_NT)
 PROGFILES = C:/Program Files (x86)
 GNU_INSTALL_ROOT = $(PROGFILES)/GNU Tools ARM Embedded/7 2018-q2-update/bin/
@@ -67,6 +70,9 @@ NM      := '$(GNU_INSTALL_ROOT)$(GNU_PREFIX)-nm'
 OBJDUMP := '$(GNU_INSTALL_ROOT)$(GNU_PREFIX)-objdump'
 OBJCOPY := '$(GNU_INSTALL_ROOT)$(GNU_PREFIX)-objcopy'
 SIZE    := '$(GNU_INSTALL_ROOT)$(GNU_PREFIX)-size'
+GDB     := '$(GNU_INSTALL_ROOT)$(GNU_PREFIX)-gdb'
+
+GDB_BMP = arm-none-eabi-gdb -ex 'target extended-remote $(BMP_PORT)' -ex 'monitor swdp_scan' -ex 'attach 1'
 
 #function for removing duplicates in a list
 remduplicates = $(strip $(if $1,$(firstword $1) $(call remduplicates,$(filter-out $(firstword $1),$1))))
@@ -341,6 +347,10 @@ erase:
 	@echo Erasing chip
 	$(NRFJPROG) --eraseall -f nrf52
 
+gdbflash: $(BUILD)/$(MERGED_FNAME).hex
+	@echo Flashing: $<
+	@$(GDB_BMP) -nx --batch -ex 'load $<' -ex 'compare-sections' -ex 'kill'
+
 #******************* Compile rules *******************
 
 ## Create build directories

From fe5cbd8183e43611c500cc0746016dd93b85c3ca Mon Sep 17 00:00:00 2001
From: Michal Moskal <michal@moskal.me>
Date: Fri, 14 Feb 2020 12:14:33 -0800
Subject: [PATCH 4/7] Allow for single-tap reset when requested

---
 src/main.c | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/src/main.c b/src/main.c
index 2750e0e..402ee09 100644
--- a/src/main.c
+++ b/src/main.c
@@ -61,6 +61,7 @@
 #include "nrf_error.h"
 
 #include "boards.h"
+#include "uf2/uf2.h"
 
 #include "pstorage_platform.h"
 #include "nrf_mbr.h"
@@ -112,6 +113,8 @@ void usb_teardown(void);
 #define BOOTLOADER_VERSION_REGISTER     NRF_TIMER2->CC[0]
 #define DFU_SERIAL_STARTUP_INTERVAL     1000
 
+#define APP_ASKS_FOR_SINGLE_TAP_RESET() (*((uint32_t*)(USER_FLASH_START + 0x200)) == 0x87eeb07c)
+
 // These value must be the same with one in dfu_transport_ble.c
 #define BLEGAP_EVENT_LENGTH             6
 #define BLEGATT_ATT_MTU_MAX             247
@@ -200,6 +203,9 @@ int main(void)
   bool const valid_app = bootloader_app_is_valid(DFU_BANK_0_REGION_START);
   bool const just_start_app = valid_app && !dfu_start && (*dbl_reset_mem) == DFU_DBL_RESET_APP;
 
+  if (!just_start_app && APP_ASKS_FOR_SINGLE_TAP_RESET())
+    dfu_start = 1;
+
   // App mode: register 1st reset and DFU startup (nrf52832)
   if ( ! (just_start_app || dfu_start || !valid_app) )
   {
@@ -220,7 +226,10 @@ int main(void)
 #endif
   }
 
-  (*dbl_reset_mem) = 0;
+  if (APP_ASKS_FOR_SINGLE_TAP_RESET())
+    (*dbl_reset_mem) = DFU_DBL_RESET_APP;
+  else
+    (*dbl_reset_mem) = 0;
 
   if ( dfu_start || !valid_app )
   {
@@ -263,6 +272,9 @@ int main(void)
     // MBR must be init before start application
     if ( !sd_inited ) softdev_mbr_init();
 
+    // clear in case we kept DFU_DBL_RESET_APP there
+    (*dbl_reset_mem) = 0;
+
     // Select a bank region to use as application region.
     // @note: Only applications running from DFU_BANK_0_REGION_START is supported.
     bootloader_app_start(DFU_BANK_0_REGION_START);

From 7ddab6435f976601a3ed689ab19132e4801f7f1d Mon Sep 17 00:00:00 2001
From: hathach <thach@tinyusb.org>
Date: Fri, 28 Feb 2020 09:49:00 +0700
Subject: [PATCH 5/7] move bootloaderConfig into pinconfig.c

---
 .../arcade_feather_nrf52840_express/board.h   | 126 +++++++++---------
 src/main.c                                    |   2 +
 src/pinconfig.c                               |  10 +-
 3 files changed, 70 insertions(+), 68 deletions(-)

diff --git a/src/boards/arcade_feather_nrf52840_express/board.h b/src/boards/arcade_feather_nrf52840_express/board.h
index 9f5adba..6d37acf 100644
--- a/src/boards/arcade_feather_nrf52840_express/board.h
+++ b/src/boards/arcade_feather_nrf52840_express/board.h
@@ -22,8 +22,8 @@
  * THE SOFTWARE.
  */
 
-#ifndef _FEATHER_NRF52840_H
-#define _FEATHER_NRF52840_H
+#ifndef _ARCARDE_FEATHER_NRF52840_H
+#define _ARCARDE_FEATHER_NRF52840_H
 
 #define _PINNUM(port, pin)    ((port)*32 + (pin))
 
@@ -75,69 +75,65 @@
 #define UF2_BOARD_ID          "nRF52840-Feather-revD"
 #define UF2_INDEX_URL         "https://www.adafruit.com/product/4062"
 
-#ifdef DEFINE_BOOTLOADER_CONFIG
-#define BOOTLOADER_CONFIG_PRESENT 1
-__attribute__((used, section(".bootloaderConfig")))
-const uint32_t bootloaderConfig[] = {
-    /* CF2 START */
-    513675505, 539130489, // magic
-    49, 100,  // used entries, total entries
-    4, 0x18, // PIN_BTN_A = PIN_RX
-    5, 0xa, // PIN_BTN_B = PIN_D2
-    13, 0x29, // PIN_LED = PIN_D13
-    18, 0xf, // PIN_MISO = PA15
-    19, 0xd, // PIN_MOSI = PA13
-    20, 0x23, // PIN_NEOPIXEL = PB03
-    21, 0x18, // PIN_RX = PA24
-    23, 0xe, // PIN_SCK = PA14
-    24, 0xb, // PIN_SCL = PA11
-    25, 0xc, // PIN_SDA = PA12
-    28, 0x19, // PIN_TX = PA25
-    32, 0xe, // PIN_DISPLAY_SCK = PIN_SCK
-    34, 0xd, // PIN_DISPLAY_MOSI = PIN_MOSI
-    35, 0x1e, // PIN_DISPLAY_CS = PIN_A2
-    36, 0x1c, // PIN_DISPLAY_DC = PIN_A3
-    37, 0xa0, // DISPLAY_WIDTH = 160
-    38, 0x80, // DISPLAY_HEIGHT = 128
-    39, 0x80, // DISPLAY_CFG0 = 0x80
-    40, 0x603, // DISPLAY_CFG1 = 0x603
-    41, 0x20, // DISPLAY_CFG2 = 0x20
-    43, 0x2, // PIN_DISPLAY_RST = PIN_A4
-    44, 0x3, // PIN_DISPLAY_BL = PIN_A5
-    47, 0x6, // PIN_BTN_LEFT = PIN_D11
-    48, 0x1a, // PIN_BTN_RIGHT = PIN_D9
-    49, 0x1b, // PIN_BTN_UP = PIN_D10
-    50, 0x7, // PIN_BTN_DOWN = PIN_D6
-    51, 0x8, // PIN_BTN_MENU = PIN_D12
-    56, 0x2a, // PIN_LED2 = PB10
-    60, 0x19, // PIN_JACK_TX = PIN_TX
-    100, 0x4, // PIN_A0 = PA04
-    101, 0x5, // PIN_A1 = PA05
-    102, 0x1e, // PIN_A2 = PA30
-    103, 0x1c, // PIN_A3 = PA28
-    104, 0x2, // PIN_A4 = PA02
-    105, 0x3, // PIN_A5 = PA03
-    152, 0xa, // PIN_D2 = PA10
-    155, 0x28, // PIN_D5 = PB08
-    156, 0x7, // PIN_D6 = PA07
-    159, 0x1a, // PIN_D9 = PA26
-    160, 0x1b, // PIN_D10 = PA27
-    161, 0x6, // PIN_D11 = PA06
-    162, 0x8, // PIN_D12 = PA08
-    163, 0x29, // PIN_D13 = PB09
-    200, 0x1, // NUM_NEOPIXELS = 1
-    204, 0x100000, // FLASH_BYTES = 0x100000
-    205, 0x40000, // RAM_BYTES = 0x40000
-    208, 0xd7688ea1, // BOOTLOADER_BOARD_ID = 0xd7688ea1
-    209, 0xada52840, // UF2_FAMILY = 0xada52840
-    210, 0x20, // PINS_PORT_SIZE = PA_32
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0,
+#define BOOTLOADER_CONFIG_CF2                               \
+    /* CF2 START */                                         \
+    513675505, 539130489, /* magic */                       \
+    49 , 100       , /* used entries, total entries */      \
+    4  , 0x18      , /* PIN_BTN_A = PIN_RX */               \
+    5  , 0xa       , /* PIN_BTN_B = PIN_D2 */               \
+    13 , 0x29      , /* PIN_LED = PIN_D13 */                \
+    18 , 0xf       , /* PIN_MISO = PA15 */                  \
+    19 , 0xd       , /* PIN_MOSI = PA13 */                  \
+    20 , 0x23      , /* PIN_NEOPIXEL = PB03 */              \
+    21 , 0x18      , /* PIN_RX = PA24 */                    \
+    23 , 0xe       , /* PIN_SCK = PA14 */                   \
+    24 , 0xb       , /* PIN_SCL = PA11 */                   \
+    25 , 0xc       , /* PIN_SDA = PA12 */                   \
+    28 , 0x19      , /* PIN_TX = PA25 */                    \
+    32 , 0xe       , /* PIN_DISPLAY_SCK = PIN_SCK */        \
+    34 , 0xd       , /* PIN_DISPLAY_MOSI = PIN_MOSI */      \
+    35 , 0x1e      , /* PIN_DISPLAY_CS = PIN_A2 */          \
+    36 , 0x1c      , /* PIN_DISPLAY_DC = PIN_A3 */          \
+    37 , 0xa0      , /* DISPLAY_WIDTH = 160 */              \
+    38 , 0x80      , /* DISPLAY_HEIGHT = 128 */             \
+    39 , 0x80      , /* DISPLAY_CFG0 = 0x80 */              \
+    40 , 0x603     , /* DISPLAY_CFG1 = 0x603 */             \
+    41 , 0x20      , /* DISPLAY_CFG2 = 0x20 */              \
+    43 , 0x2       , /* PIN_DISPLAY_RST = PIN_A4 */         \
+    44 , 0x3       , /* PIN_DISPLAY_BL = PIN_A5 */          \
+    47 , 0x6       , /* PIN_BTN_LEFT = PIN_D11 */           \
+    48 , 0x1a      , /* PIN_BTN_RIGHT = PIN_D9 */           \
+    49 , 0x1b      , /* PIN_BTN_UP = PIN_D10 */             \
+    50 , 0x7       , /* PIN_BTN_DOWN = PIN_D6 */            \
+    51 , 0x8       , /* PIN_BTN_MENU = PIN_D12 */           \
+    56 , 0x2a      , /* PIN_LED2 = PB10 */                  \
+    60 , 0x19      , /* PIN_JACK_TX = PIN_TX */             \
+    100, 0x4       , /* PIN_A0 = PA04 */                    \
+    101, 0x5       , /* PIN_A1 = PA05 */                    \
+    102, 0x1e      , /* PIN_A2 = PA30 */                    \
+    103, 0x1c      , /* PIN_A3 = PA28 */                    \
+    104, 0x2       , /* PIN_A4 = PA02 */                    \
+    105, 0x3       , /* PIN_A5 = PA03 */                    \
+    152, 0xa       , /* PIN_D2 = PA10 */                    \
+    155, 0x28      , /* PIN_D5 = PB08 */                    \
+    156, 0x7       , /* PIN_D6 = PA07 */                    \
+    159, 0x1a      , /* PIN_D9 = PA26 */                    \
+    160, 0x1b      , /* PIN_D10 = PA27 */                   \
+    161, 0x6       , /* PIN_D11 = PA06 */                   \
+    162, 0x8       , /* PIN_D12 = PA08 */                   \
+    163, 0x29      , /* PIN_D13 = PB09 */                   \
+    200, 0x1       , /* NUM_NEOPIXELS = 1 */                \
+    204, 0x100000  , /* FLASH_BYTES = 0x100000 */           \
+    205, 0x40000   , /* RAM_BYTES = 0x40000 */              \
+    208, 0xd7688ea1, /* BOOTLOADER_BOARD_ID = 0xd7688ea1 */ \
+    209, 0xada52840, /* UF2_FAMILY = 0xada52840 */          \
+    210, 0x20      , /* PINS_PORT_SIZE = PA_32 */           \
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \
+    0, 0, 0, 0, 0, 0 \
     /* CF2 END */
-};
-#endif
 
-#endif // _FEATHER_NRF52840_H
+
+#endif // _ARCARDE_FEATHER_NRF52840_H
 
diff --git a/src/main.c b/src/main.c
index 402ee09..5c974c1 100644
--- a/src/main.c
+++ b/src/main.c
@@ -113,6 +113,8 @@ void usb_teardown(void);
 #define BOOTLOADER_VERSION_REGISTER     NRF_TIMER2->CC[0]
 #define DFU_SERIAL_STARTUP_INTERVAL     1000
 
+// Allow for using reset button essentially to swap between application and bootloader.
+// This is controlled by a flag in the app and is the behavior of CPX and all Arcade boards when using MakeCode.
 #define APP_ASKS_FOR_SINGLE_TAP_RESET() (*((uint32_t*)(USER_FLASH_START + 0x200)) == 0x87eeb07c)
 
 // These value must be the same with one in dfu_transport_ble.c
diff --git a/src/pinconfig.c b/src/pinconfig.c
index a4202d9..ee08b95 100644
--- a/src/pinconfig.c
+++ b/src/pinconfig.c
@@ -1,6 +1,10 @@
-#define DEFINE_BOOTLOADER_CONFIG 1
 #include "boards.h"
 
-#if defined(BOOTLOADER_CONFIG_PRESENT) && BOOTLOADER_CONFIG_PRESENT
-// nothing yet
+#ifdef BOOTLOADER_CONFIG_CF2
+
+__attribute__((used, section(".bootloaderConfig")))
+const uint32_t bootloaderConfig[] = {
+  BOOTLOADER_CONFIG_CF2
+};
+
 #endif

From c7cb5f971e2f82bcd3f574302ab26321aeeccbb0 Mon Sep 17 00:00:00 2001
From: Michal Moskal <michal@moskal.me>
Date: Fri, 28 Feb 2020 13:26:49 -0500
Subject: [PATCH 6/7] Add 'make gdb' target

---
 Makefile | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Makefile b/Makefile
index 5ec07b6..bdffcfe 100644
--- a/Makefile
+++ b/Makefile
@@ -351,6 +351,9 @@ gdbflash: $(BUILD)/$(MERGED_FNAME).hex
 	@echo Flashing: $<
 	@$(GDB_BMP) -nx --batch -ex 'load $<' -ex 'compare-sections' -ex 'kill'
 
+gdb: $(BUILD)/$(OUTPUT_FILENAME)-nosd.out
+	$(GDB_BMP) $<
+
 #******************* Compile rules *******************
 
 ## Create build directories

From 2446d02e59137ca23f2a1e54db3d6070207da176 Mon Sep 17 00:00:00 2001
From: Michal Moskal <michal@moskal.me>
Date: Fri, 28 Feb 2020 13:34:41 -0500
Subject: [PATCH 7/7] Increase settings area to 2k (as per PR comments)

---
 src/linker/nrf52840_s140_v6.ld | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/linker/nrf52840_s140_v6.ld b/src/linker/nrf52840_s140_v6.ld
index cbc2286..3358c98 100644
--- a/src/linker/nrf52840_s140_v6.ld
+++ b/src/linker/nrf52840_s140_v6.ld
@@ -11,9 +11,9 @@ MEMORY
    *  those values do not match. The check is performed in main.c, see
    *  APP_ERROR_CHECK_BOOL(*((uint32_t *)NRF_UICR_BOOT_START_ADDRESS) == BOOTLOADER_REGION_START);
    */
-  FLASH (rx) : ORIGIN = 0xF4000, LENGTH = 0xFE000-0xF4000-1024 /* 39 KB */
+  FLASH (rx) : ORIGIN = 0xF4000, LENGTH = 0xFE000-0xF4000-2048 /* 38 KB */
 
-  BOOTLOADER_CONFIG (r): ORIGIN = 0xFE000 - 1024, LENGTH = 1024
+  BOOTLOADER_CONFIG (r): ORIGIN = 0xFE000 - 2048, LENGTH = 2048
 
   /** Location of mbr params page in flash. */
   MBR_PARAMS_PAGE (rw) : ORIGIN = 0xFE000, LENGTH = 0x1000