boards/stm32wb: Flipper Zero initial support

boards/Kconfig

@@ -1494,6 +1494,15 @@ config ARCH_BOARD_NUCLEO_L552ZE
 	---help---
 		STMicro Nucleo STM32L552 board based on the STMicro STM32L552ZET6 MCU.
 
+config ARCH_BOARD_FLIPPERZERO
+	bool "Flipper Zero"
+	depends on ARCH_CHIP_STM32WB55RG
+	select ARCH_HAVE_LEDS
+	select ARCH_HAVE_BUTTONS
+	select ARCH_HAVE_IRQBUTTONS
+	---help---
+		Flipper Zero device based on the STMicro STM32WB55RGV6 MCU.
+
 config ARCH_BOARD_NUCLEO_WB55RG
 	bool "STM32WB55 Nucleo WB55RG"
 	depends on ARCH_CHIP_STM32WB55RG
@@ -2737,6 +2746,7 @@ config ARCH_BOARD
 	default "steval-stlcs01v1"         if ARCH_BOARD_STEVAL_STLCS01V1
 	default "nucleo-l496zg"            if ARCH_BOARD_NUCLEO_L496ZG
 	default "nucleo-l552ze"            if ARCH_BOARD_NUCLEO_L552ZE
+	default "flipperzero"              if ARCH_BOARD_FLIPPERZERO
 	default "nucleo-wb55rg"            if ARCH_BOARD_NUCLEO_WB55RG
 	default "nucleo-wl55jc"            if ARCH_BOARD_NUCLEO_WL55JC
 	default "nutiny-nuc120"            if ARCH_BOARD_NUTINY_NUC120
@@ -3308,6 +3318,9 @@ endif
 if ARCH_BOARD_STM32L562E_DK
 source "boards/arm/stm32l5/stm32l562e-dk/Kconfig"
 endif
+if ARCH_BOARD_FLIPPERZERO
+source "boards/arm/stm32wb/flipperzero/Kconfig"
+endif
 if ARCH_BOARD_NUCLEO_WB55RG
 source "boards/arm/stm32wb/nucleo-wb55rg/Kconfig"
 endif

boards/arm/stm32wb/flipperzero/Kconfig

@@ -0,0 +1,8 @@
+#
+# For a description of the syntax of this configuration file,
+# see the file kconfig-language.txt in the NuttX tools repository.
+#
+
+if ARCH_BOARD_FLIPPERZERO
+
+endif # ARCH_BOARD_FLIPPERZERO

boards/arm/stm32wb/flipperzero/README.txt

@@ -0,0 +1,60 @@
+README.txt
+==========
+
+  This README file discusses the port of NuttX to the Flipper Zero multi-tool
+  device. See https://flipperzero.one/ for device details.
+
+Contents
+========
+
+  - Device features
+  - Status
+  - Programming
+  - Serial Console
+  - Configurations
+
+Device features
+===============
+
+  - Multi-protocol wireless STM32WB55RGV6 MCU with 1MiB of Flash and 256KiB of SRAM.
+  - USB Type-C connector for communication and charging
+  - LiPo battery with charger BQ25896 and fuel gauge BQ27220
+  - 5-button joystick and a Back button
+  - ST7565 128x64 LCD
+  - RGB LED with LP5562 I2C driver
+  - Buzzer
+  - Vibration motor
+  - Micro SD slot connected over SPI
+  - CC1101 RF transceiver
+  - ST25R3916 high-performance NFC Universal Device and EMVCo reader
+  - 125 kHz RFID analog circuit
+  - IR led
+  - TSOP75538 IR receiver
+  - iButton connector
+  - GPIO connector with power out and SWD pins
+
+Status
+======
+
+  Oct 2022: initial nsh configuration.
+
+Programming
+===========
+
+  The device can be normally flashing and debugging over SWD interface or flashing via
+  USB interface when the device is in DFU mode using STMicro's STM32CubeProgrammer. The
+  DFU mode will be activated after pressing two round button for 30s. Original firmware
+  can be flashed back and stay working until the secure flash area is not changed.
+
+Serial Console
+==============
+
+  The MCU's USART1 PB6/PB7 pins are available as external GPIO pins 13/14.
+
+Configurations
+==============
+
+  nsh:
+
+    Configures the NuttShell (nsh) located at examples/nsh.  This
+    configuration is focused on low level, command-line driver testing.

boards/arm/stm32wb/flipperzero/configs/nsh/defconfig

@@ -0,0 +1,42 @@
+#
+# This file is autogenerated: PLEASE DO NOT EDIT IT.
+#
+# You can use "make menuconfig" to make any modifications to the installed .config file.
+# You can then do "make savedefconfig" to generate a new defconfig file that includes your
+# modifications.
+#
+# CONFIG_ARCH_LEDS is not set
+CONFIG_ARCH="arm"
+CONFIG_ARCH_BOARD="flipperzero"
+CONFIG_ARCH_BOARD_FLIPPERZERO=y
+CONFIG_ARCH_CHIP="stm32wb"
+CONFIG_ARCH_CHIP_STM32WB55RG=y
+CONFIG_ARCH_CHIP_STM32WB=y
+CONFIG_ARCH_INTERRUPTSTACK=2048
+CONFIG_ARCH_STACKDUMP=y
+CONFIG_BOARD_LOOPSPERMSEC=6500
+CONFIG_BUILTIN=y
+CONFIG_DEBUG_SYMBOLS=y
+CONFIG_HAVE_CXX=y
+CONFIG_HAVE_CXXINITIALIZE=y
+CONFIG_INIT_ENTRYPOINT="nsh_main"
+CONFIG_INTELHEX_BINARY=y
+CONFIG_NSH_ARCHINIT=y
+CONFIG_NSH_BUILTIN_APPS=y
+CONFIG_NSH_FILEIOSIZE=512
+CONFIG_NSH_LINELEN=64
+CONFIG_NSH_READLINE=y
+CONFIG_PREALLOC_TIMERS=4
+CONFIG_RAM_SIZE=196608
+CONFIG_RAM_START=0x20000000
+CONFIG_RAW_BINARY=y
+CONFIG_RR_INTERVAL=200
+CONFIG_SCHED_WAITPID=y
+CONFIG_STM32WB_DISABLE_IDLE_SLEEP_DURING_DEBUG=y
+CONFIG_STM32WB_DMA1=y
+CONFIG_STM32WB_PWR=y
+CONFIG_STM32WB_USART1=y
+CONFIG_SYSTEM_NSH=y
+CONFIG_TASK_NAME_SIZE=0
+CONFIG_TESTING_OSTEST=y
+CONFIG_USART1_SERIAL_CONSOLE=y

boards/arm/stm32wb/flipperzero/include/board.h

@@ -0,0 +1,115 @@
+/****************************************************************************
+ * boards/arm/stm32wb/flipperzero/include/board.h
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.  The
+ * ASF licenses this file to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the
+ * License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ ****************************************************************************/
+
+#ifndef __BOARDS_ARM_STM32WB_FLIPPERZERO_INCLUDE_BOARD_H
+#define __BOARDS_ARM_STM32WB_FLIPPERZERO_INCLUDE_BOARD_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+#ifndef __ASSEMBLY__
+#  include <stdint.h>
+#endif
+
+/* Clocking *****************************************************************/
+
+#include "flipperzero-clocking.h"
+
+/* Do not include STM32WB header files here */
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/* USART */
+
+#define GPIO_USART1_TX GPIO_USART1_TX_2    /* PB6 */
+#define GPIO_USART1_RX GPIO_USART1_RX_2    /* PB7 */
+
+/* LEDs */
+
+/* LED index values for use with board_userled() */
+
+/* These LEDs are not used by the board port unless CONFIG_ARCH_LEDS is
+ * defined.  In that case, the usage by the board port is defined in
+ * include/board.h and src/stm32_autoleds.c.
+ */
+
+#define LED_STARTED      0
+#define LED_HEAPALLOCATE 0
+#define LED_IRQSENABLED  0
+#define LED_STACKCREATED 1
+#define LED_INIRQ        1
+#define LED_SIGNAL       2
+#define LED_ASSERTION    2
+#define LED_PANIC        1
+
+/* Buttons */
+
+#define BUTTON_SW1        0  /* PC4, needs SB47 close */
+#define BUTTON_SW2        1  /* PD0 */
+#define BUTTON_SW3        2  /* PD1 */
+#define NUM_BUTTONS       3
+
+#define BUTTON_SW1_BIT    (1 << BUTTON_SW1)
+#define BUTTON_SW2_BIT    (1 << BUTTON_SW2)
+#define BUTTON_SW3_BIT    (1 << BUTTON_SW3)
+
+/****************************************************************************
+ * Public Data
+ ****************************************************************************/
+
+#ifndef __ASSEMBLY__
+
+#undef EXTERN
+#if defined(__cplusplus)
+#define EXTERN extern "C"
+extern "C"
+{
+#else
+#define EXTERN extern
+#endif
+
+/****************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: stm32wb_board_initialize
+ *
+ * Description:
+ *   All STM32WB architectures must provide the following entry point.
+ *   This entry point is called early in the initialization -- after all
+ *   memory has been configured and mapped but before any devices have been
+ *   initialized.
+ *
+ ****************************************************************************/
+
+void stm32wb_board_initialize(void);
+
+#undef EXTERN
+#if defined(__cplusplus)
+}
+#endif
+
+#endif /* __ASSEMBLY__ */
+#endif /* __BOARDS_ARM_STM32WB_FLIPPERZERO_INCLUDE_BOARD_H */