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commit b260154655c84c3169f21880f30a6b143ba14a31
Author: Jerzy Kasenberg <[email protected]>
AuthorDate: Sun Oct 18 16:39:15 2026 +0200

    hw/bsp: Add WeAct STM32H503CB board
    
    Adds BSP for WeAct STM32H503CB core board
    (STM32H503CBU6, 128kB flash, 32kB RAM, 8MHz HSE).
    
    - system clock 250MHz from PLL1 (HSE)
    - USART1 (PA9/PA10), USART2 (PA2/PA3), USART3
    - SPI1 (PA4-PA7), I2C1 (PB8/PB9), I2C2
    - LED on PC13, button on PA0
    - MCUboot in first 32kB, single application slot (overwrite only)
    - STM32_Programmer_CLI as default downloader
    
    FLASH_LAYOUT selects flash map:
    - default: bootloader and application in internal flash
    - no_bootloader: application uses whole internal flash
    - bootloader_and_spiflash_1m/_8m: additionally external SPI flash
      (1MB/8MB) on SPI1 with CS on PA4 holding reboot log, NFFS and
      littlefs areas; SPI flash chip is detected from a list of
      supported Winbond devices.
    
    Assisted-by: Claude:claude-opus-5-5
    Signed-off-by: Jerzy Kasenberg <[email protected]>
---
 .rat-excludes                                      |   1 +
 hw/bsp/weact_h503cb/bsp.yml                        | 117 +++++
 hw/bsp/weact_h503cb/debug.sh                       |  34 ++
 hw/bsp/weact_h503cb/include/bsp/bsp.h              |  58 +++
 .../weact_h503cb/include/bsp/stm32h5xx_hal_conf.h  | 492 +++++++++++++++++++++
 hw/bsp/weact_h503cb/link/include/bsp_config.ld.h   |  22 +
 hw/bsp/weact_h503cb/pkg.yml                        |  44 ++
 hw/bsp/weact_h503cb/src/hal_bsp.c                  | 171 +++++++
 hw/bsp/weact_h503cb/syscfg.yml                     | 109 +++++
 9 files changed, 1048 insertions(+)

diff --git a/.rat-excludes b/.rat-excludes
index 4ac800564..eaa9d4635 100644
--- a/.rat-excludes
+++ b/.rat-excludes
@@ -230,6 +230,7 @@ hw/bsp/stm32f4discovery/include/bsp/stm32f4xx_hal_conf.h
 hw/bsp/stm32f7discovery/include/bsp/stm32f7xx_hal_conf.h
 hw/bsp/stm32l152discovery/include/bsp/stm32l1xx_hal_conf.h
 hw/bsp/weact_g431cb/include/bsp/stm32g4xx_hal_conf.h
+hw/bsp/weact_h503cb/include/bsp/stm32h5xx_hal_conf.h
 
 # baselibc - BSD License.
 # tinyprintf - BSD License.
diff --git a/hw/bsp/weact_h503cb/bsp.yml b/hw/bsp/weact_h503cb/bsp.yml
new file mode 100644
index 000000000..762f507a2
--- /dev/null
+++ b/hw/bsp/weact_h503cb/bsp.yml
@@ -0,0 +1,117 @@
+#
+# 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.
+#
+
+bsp.name: "WeAct H503CB"
+bsp.url: https://github.com/WeActStudio/WeActStudio.STM32H503CoreBoard
+bsp.maker: "WeAct"
+bsp.arch: cortex_m33
+bsp.compiler: compiler/arm-none-eabi-m33
+bsp.linkerscript: autogenerated
+bsp.downloadscript: "hw/scripts/download.sh"
+bsp.debugscript: "hw/bsp/weact_h503cb/debug.sh"
+
+bsp.flash_map:
+    areas:
+        # MCUboot bootloader
+        FLASH_AREA_BOOTLOADER:
+            device: 0
+            offset: 0x08000000
+            size: 32kB
+        # Single application slot
+        FLASH_AREA_IMAGE_0:
+            device: 0
+            offset: 0x08008000
+            size: 96kB
+
+bsp.flash_map.'(FLASH_LAYOUT=="no_bootloader")':
+    areas:
+        FLASH_AREA_IMAGE_0:
+            device: 0
+            offset: 0x08000000
+            size: 128kB
+
+bsp.flash_map.'(FLASH_LAYOUT=="bootloader_and_spiflash_8m")':
+    areas:
+        # Embedded flash 128kB
+        # MCUboot bootloader
+        FLASH_AREA_BOOTLOADER:
+            device: 0
+            offset: 0x08000000
+            size: 32kB
+        # Single application slot
+        FLASH_AREA_IMAGE_0:
+            device: 0
+            offset: 0x08008000
+            size: 96kB
+        # External SPI flash, 8MB
+        # 64kB reboot log
+        FLASH_AREA_REBOOT_LOG:
+            user_id: 2
+            device: 1
+            offset: 0x00000000
+            size: 64kB
+
+        FLASH_AREA_NFFS:
+            user_id: 1
+            device: 1
+            offset: 0x00010000
+            size: 64kB
+        FLASH_AREA_LITTLEFS:
+            user_id: 3
+            device: 1
+            offset: 0x00020000
+            size: 128kB
+
+bsp.flash_map.'(FLASH_LAYOUT=="bootloader_and_spiflash_1m")':
+    areas:
+        # Embedded flash 128kB
+        # MCUboot bootloader
+        FLASH_AREA_BOOTLOADER:
+            device: 0
+            offset: 0x08000000
+            size: 32kB
+        # Single application slot
+        FLASH_AREA_IMAGE_0:
+            device: 0
+            offset: 0x08008000
+            size: 96kB
+        # External SPI flash, 1MB
+        # 64kB reboot log
+        FLASH_AREA_REBOOT_LOG:
+            user_id: 2
+            device: 1
+            offset: 0x00000000
+            size: 64kB
+
+        FLASH_AREA_NFFS:
+            user_id: 1
+            device: 1
+            offset: 0x00010000
+            size: 64kB
+        FLASH_AREA_LITTLEFS:
+            user_id: 3
+            device: 1
+            offset: 0x00020000
+            size: 128kB
+
+        FLASH_AREA_TEST_LOG:
+            user_id: 4
+            device: 1
+            offset: 0x0A0000
+            size: 384kB
diff --git a/hw/bsp/weact_h503cb/debug.sh b/hw/bsp/weact_h503cb/debug.sh
new file mode 100755
index 000000000..28886adf6
--- /dev/null
+++ b/hw/bsp/weact_h503cb/debug.sh
@@ -0,0 +1,34 @@
+#!/bin/sh
+# 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.
+#
+
+# Called with following variables set:
+#  - CORE_PATH is absolute path to @apache-mynewt-core
+#  - BSP_PATH is absolute path to hw/bsp/bsp_name
+#  - BIN_BASENAME is the path to prefix to target binary,
+#    .elf appended to name is the ELF file
+#  - FEATURES holds the target features string
+#  - EXTRA_JTAG_CMD holds extra parameters to pass to jtag software
+#  - RESET set if target should be reset when attaching
+#  - NO_GDB set if we should not start gdb to debug
+#
+. $CORE_PATH/hw/scripts/stm32_programmer.sh
+
+FILE_NAME=$BIN_BASENAME.elf
+
+stm32_debug
diff --git a/hw/bsp/weact_h503cb/include/bsp/bsp.h 
b/hw/bsp/weact_h503cb/include/bsp/bsp.h
new file mode 100644
index 000000000..0d4a1a575
--- /dev/null
+++ b/hw/bsp/weact_h503cb/include/bsp/bsp.h
@@ -0,0 +1,58 @@
+/*
+ * 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 H_BSP_H
+#define H_BSP_H
+
+#include <inttypes.h>
+#include <mcu/mcu.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Define special stackos sections */
+#define sec_data_core   __attribute__((section(".data.core")))
+#define sec_bss_core    __attribute__((section(".bss.core")))
+#define sec_noinit      __attribute__((section(".noinit")))
+
+/* More convenient section placement macros. */
+#define bssnz_t         sec_noinit
+
+extern uint8_t _ram_start[];
+
+#define RAM_SIZE       (32 * 1024)
+
+/* LED pins */
+#define LED_1           MCU_GPIO_PORTC(13)
+
+#define LED_blue        LED_1
+
+#define LED_BLINK_PIN   LED_1
+
+/* BUTTON pins */
+#define BTN_USER_1      MCU_GPIO_PORTA(0)
+
+/* Button pin */
+#define BUTTON_1        BTN_USER_1
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif  /* H_BSP_H */
diff --git a/hw/bsp/weact_h503cb/include/bsp/stm32h5xx_hal_conf.h 
b/hw/bsp/weact_h503cb/include/bsp/stm32h5xx_hal_conf.h
new file mode 100644
index 000000000..87f188b83
--- /dev/null
+++ b/hw/bsp/weact_h503cb/include/bsp/stm32h5xx_hal_conf.h
@@ -0,0 +1,492 @@
+/**
+  
**********************************************************************************************************************
+  * @file    stm32h5xx_hal_conf_template.h
+  * @author  MCD Application Team
+  * @brief   HAL configuration template file.
+  *          This file should be copied to the application folder and renamed
+  *          to stm32h5xx_hal_conf.h.
+  
**********************************************************************************************************************
+  * @attention
+  *
+  * Copyright (c) 2023 STMicroelectronics.
+  * All rights reserved.
+  *
+  * This software is licensed under terms that can be found in the LICENSE file
+  * in the root directory of this software component.
+  * If no LICENSE file comes with this software, it is provided AS-IS.
+  *
+  
**********************************************************************************************************************
+  */
+
+/* Define to prevent recursive inclusion 
-----------------------------------------------------------------------------*/
+#ifndef STM32H5xx_HAL_CONF_H
+#define STM32H5xx_HAL_CONF_H
+
+#include <syscfg/syscfg.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Exported types 
----------------------------------------------------------------------------------------------------*/
+/* Exported constants 
------------------------------------------------------------------------------------------------*/
+
+/* ########################################### Module Selection 
##################################################### */
+/**
+  * @brief This is the list of modules to be used in the HAL driver
+  */
+#define HAL_MODULE_ENABLED
+#define HAL_ADC_MODULE_ENABLED
+#define HAL_CEC_MODULE_ENABLED
+#define HAL_COMP_MODULE_ENABLED
+#define HAL_CORDIC_MODULE_ENABLED
+#define HAL_CORTEX_MODULE_ENABLED
+#define HAL_CRC_MODULE_ENABLED
+#define HAL_CRYP_MODULE_ENABLED
+#define HAL_DAC_MODULE_ENABLED
+#define HAL_DCACHE_MODULE_ENABLED
+#define HAL_DCMI_MODULE_ENABLED
+#define HAL_DMA_MODULE_ENABLED
+#define HAL_DTS_MODULE_ENABLED
+#define HAL_EXTI_MODULE_ENABLED
+#define HAL_ETH_MODULE_ENABLED
+#define HAL_FDCAN_MODULE_ENABLED
+#define HAL_FLASH_MODULE_ENABLED
+#define HAL_FMAC_MODULE_ENABLED
+#define HAL_GPIO_MODULE_ENABLED
+#define HAL_GTZC_MODULE_ENABLED
+#define HAL_HASH_MODULE_ENABLED
+#define HAL_HCD_MODULE_ENABLED
+#define HAL_I2C_MODULE_ENABLED
+#define HAL_I2S_MODULE_ENABLED
+#define HAL_I3C_MODULE_ENABLED
+#define HAL_ICACHE_MODULE_ENABLED
+#define HAL_IRDA_MODULE_ENABLED
+#define HAL_IWDG_MODULE_ENABLED
+#define HAL_LPTIM_MODULE_ENABLED
+#define HAL_MMC_MODULE_ENABLED
+#define HAL_NAND_MODULE_ENABLED
+#define HAL_NOR_MODULE_ENABLED
+#define HAL_OTFDEC_MODULE_ENABLED
+#define HAL_OPAMP_MODULE_ENABLED
+#define HAL_PCD_MODULE_ENABLED
+#define HAL_PKA_MODULE_ENABLED
+#define HAL_PSSI_MODULE_ENABLED
+#define HAL_PWR_MODULE_ENABLED
+#define HAL_RAMCFG_MODULE_ENABLED
+#define HAL_RCC_MODULE_ENABLED
+#define HAL_RNG_MODULE_ENABLED
+#define HAL_RTC_MODULE_ENABLED
+#define HAL_SAI_MODULE_ENABLED
+#define HAL_SD_MODULE_ENABLED
+#define HAL_SDRAM_MODULE_ENABLED
+#define HAL_SMARTCARD_MODULE_ENABLED
+#define HAL_SMBUS_MODULE_ENABLED
+#define HAL_SPI_MODULE_ENABLED
+#define HAL_SRAM_MODULE_ENABLED
+#define HAL_TIM_MODULE_ENABLED
+#define HAL_UART_MODULE_ENABLED
+#define HAL_USART_MODULE_ENABLED
+#define HAL_WWDG_MODULE_ENABLED
+#define HAL_XSPI_MODULE_ENABLED
+
+/* ####################################### Oscillator Values adaptation 
##############################################*/
+/**
+  * @brief Adjust the value of External High Speed oscillator (HSE) used in 
your application.
+  *        This value is used by the RCC HAL module to compute the system 
frequency
+  *        (when HSE is used as system clock source, directly or through the 
PLL).
+  */
+#if defined (MYNEWT_VAL_STM32_CLOCK_HSE_VALUE)
+#define HSE_VALUE    MYNEWT_VAL(STM32_CLOCK_HSE_VALUE)
+#elif !defined  (HSE_VALUE)
+#define HSE_VALUE    8000000U /*!< Value of the External oscillator in Hz */
+#endif /* HSE_VALUE */
+
+#if !defined  (HSE_STARTUP_TIMEOUT)
+#define HSE_STARTUP_TIMEOUT    100UL   /*!< Time out for HSE start up, in ms */
+#endif /* HSE_STARTUP_TIMEOUT */
+
+/**
+  * @brief Internal Core Speed oscillator (CSI) value.
+  *        This value is used by the RCC HAL module to compute the system 
frequency
+  *        (when CSI is used as system clock source, directly or through the 
PLL).
+  */
+#if !defined  (CSI_VALUE)
+#define CSI_VALUE              4000000UL /*!< Value of the Internal oscillator 
in Hz*/
+#endif /* CSI_VALUE */
+
+/**
+  * @brief Internal High Speed oscillator (HSI) value.
+  *        This value is used by the RCC HAL module to compute the system 
frequency
+  *        (when HSI is used as system clock source, directly or through the 
PLL).
+  */
+#if !defined  (HSI_VALUE)
+#define HSI_VALUE              64000000UL /*!< Value of the Internal 
oscillator in Hz*/
+#endif /* HSI_VALUE */
+
+/**
+  * @brief Internal High Speed oscillator (HSI48) value for USB FS, SDMMC and 
RNG.
+  *        This internal oscillator is mainly dedicated to provide a high 
precision clock to
+  *        the USB peripheral by means of a special Clock Recovery System 
(CRS) circuitry.
+  *        When the CRS is not used, the HSI48 RC oscillator runs on it 
default frequency
+  *        which is subject to manufacturing process variations.
+  */
+#if !defined  (HSI48_VALUE)
+#define HSI48_VALUE             48000000UL /*!< Value of the Internal High 
Speed oscillator for USB FS/SDMMC/RNG in Hz.
+                                               The real value my vary 
depending on manufacturing process variations.*/
+#endif /* HSI48_VALUE */
+
+/**
+  * @brief Internal Low Speed oscillator (LSI) value.
+  */
+#if !defined  (LSI_VALUE)
+#define LSI_VALUE               32000UL    /*!< LSI Typical Value in Hz*/
+#endif /* LSI_VALUE */                       /*!< Value of the Internal Low 
Speed oscillator in Hz
+The real value may vary depending on the variations
+in voltage and temperature.*/
+
+#if !defined  (LSI_STARTUP_TIME)
+#define LSI_STARTUP_TIME          130UL      /*!< Time out for LSI start up, 
in ms */
+#endif /* LSI_STARTUP_TIME */
+
+/**
+  * @brief External Low Speed oscillator (LSE) value.
+  *        This value is used by the UART, RTC HAL module to compute the 
system frequency
+  */
+#if !defined  (LSE_VALUE)
+#define LSE_VALUE              32768UL    /*!< Value of the External 
oscillator in Hz*/
+#endif /* LSE_VALUE */
+
+#if !defined  (LSE_STARTUP_TIMEOUT)
+#define LSE_STARTUP_TIMEOUT    5000UL     /*!< Time out for LSE start up, in 
ms */
+#endif /* LSE_STARTUP_TIMEOUT */
+
+
+/**
+  * @brief External clock source for SPI/SAI peripheral
+  *        This value is used by the SPI/SAI HAL module to compute the SPI/SAI 
clock source
+  *        frequency, this source is inserted directly through I2S_CKIN pad.
+  */
+#if !defined  (EXTERNAL_CLOCK_VALUE)
+#define EXTERNAL_CLOCK_VALUE    12288000UL /*!< Value of the External clock in 
Hz*/
+#endif /* EXTERNAL_CLOCK_VALUE */
+
+/* Tip: To avoid modifying this file each time you need to use different HSE,
+   ===  you can define the HSE value in your toolchain compiler preprocessor. 
*/
+
+/* ############################################ System Configuration 
################################################ */
+/**
+  * @brief This is the HAL system configuration section
+  */
+#define  VDD_VALUE                  3300UL /*!< Value of VDD in mv */
+#define  TICK_INT_PRIORITY          ((1UL<<__NVIC_PRIO_BITS) - 1UL)  /*!< tick 
interrupt priority (lowest by default) */
+#define  USE_RTOS                   0U
+#define  PREFETCH_ENABLE            MYNEWT_VAL(STM32_FLASH_PREFETCH_ENABLE)    
           /*!< Enable prefetch */
+
+/* ############################################ Assert Selection 
#################################################### */
+/**
+  * @brief Uncomment the line below to expanse the "assert_param" macro in the
+  *        HAL drivers code
+  */
+/* #define USE_FULL_ASSERT    1U */
+
+/* ############################################ Register callback feature 
configuration ############################# */
+/**
+  * @brief Set below the peripheral configuration  to "1U" to add the support
+  *        of HAL callback registration/unregistration feature for the HAL
+  *        driver(s). This allows user application to provide specific callback
+  *        functions thanks to HAL_PPP_RegisterCallback() rather than 
overwriting
+  *        the default weak callback functions (see each stm32h5xx_hal_ppp.h 
file
+  *        for possible callback identifiers defined in 
HAL_PPP_CallbackIDTypeDef
+  *        for each PPP peripheral).
+  */
+#define  USE_HAL_ADC_REGISTER_CALLBACKS       0U    /* ADC register callback 
disabled       */
+#define  USE_HAL_CEC_REGISTER_CALLBACKS       0U    /* CEC register callback 
disabled       */
+#define  USE_HAL_COMP_REGISTER_CALLBACKS      0U    /* COMP register callback 
disabled      */
+#define  USE_HAL_CORDIC_REGISTER_CALLBACKS    0U    /* CORDIC register 
callback disabled    */
+#define  USE_HAL_CRYP_REGISTER_CALLBACKS      0U    /* CRYP register callback 
disabled      */
+#define  USE_HAL_DAC_REGISTER_CALLBACKS       0U    /* DAC register callback 
disabled       */
+#define  USE_HAL_DCMI_REGISTER_CALLBACKS      0U    /* DCMI register callback 
disabled      */
+#define  USE_HAL_DTS_REGISTER_CALLBACKS       0U    /* DTS register callback 
disabled       */
+#define  USE_HAL_ETH_REGISTER_CALLBACKS       0U    /* ETH register callback 
disabled       */
+#define  USE_HAL_FDCAN_REGISTER_CALLBACKS     0U    /* FDCAN register callback 
disabled     */
+#define  USE_HAL_FMAC_REGISTER_CALLBACKS      0U    /* FMAC register callback 
disabled      */
+#define  USE_HAL_NOR_REGISTER_CALLBACKS       0U    /* NOR register callback 
disabled       */
+#define  USE_HAL_HASH_REGISTER_CALLBACKS      0U    /* HASH register callback 
disabled      */
+#define  USE_HAL_HCD_REGISTER_CALLBACKS       0U    /* HCD register callback 
disabled       */
+#define  USE_HAL_I2C_REGISTER_CALLBACKS       0U    /* I2C register callback 
disabled       */
+#define  USE_HAL_I2S_REGISTER_CALLBACKS       0U    /* I2S register callback 
disabled       */
+#define  USE_HAL_I3C_REGISTER_CALLBACKS       0U    /* I3C register callback 
disabled       */
+#define  USE_HAL_IRDA_REGISTER_CALLBACKS      0U    /* IRDA register callback 
disabled      */
+#define  USE_HAL_IWDG_REGISTER_CALLBACKS      0U    /* IWDG register callback 
disabled      */
+#define  USE_HAL_LPTIM_REGISTER_CALLBACKS     0U    /* LPTIM register callback 
disabled     */
+#define  USE_HAL_MMC_REGISTER_CALLBACKS       0U    /* MMC register callback 
disabled       */
+#define  USE_HAL_NAND_REGISTER_CALLBACKS      0U    /* NAND register callback 
disabled      */
+#define  USE_HAL_OPAMP_REGISTER_CALLBACKS     0U    /* OTFDEC register 
callback disabled    */
+#define  USE_HAL_OTFDEC_REGISTER_CALLBACKS    0U    /* OPAMP register callback 
disabled     */
+#define  USE_HAL_PCD_REGISTER_CALLBACKS       0U    /* PCD register callback 
disabled       */
+#define  USE_HAL_PKA_REGISTER_CALLBACKS       0U    /* PKA register callback 
disabled       */
+#define  USE_HAL_RAMCFG_REGISTER_CALLBACKS    0U    /* RAMCFG register 
callback disabled    */
+#define  USE_HAL_RNG_REGISTER_CALLBACKS       0U    /* RNG register callback 
disabled       */
+#define  USE_HAL_RTC_REGISTER_CALLBACKS       0U    /* RTC register callback 
disabled       */
+#define  USE_HAL_SAI_REGISTER_CALLBACKS       0U    /* SAI register callback 
disabled       */
+#define  USE_HAL_SD_REGISTER_CALLBACKS        0U    /* SD register callback 
disabled        */
+#define  USE_HAL_SDRAM_REGISTER_CALLBACKS     0U    /* SDRAM register callback 
disabled     */
+#define  USE_HAL_SMARTCARD_REGISTER_CALLBACKS 0U    /* SMARTCARD register 
callback disabled */
+#define  USE_HAL_SMBUS_REGISTER_CALLBACKS     0U    /* SMBUS register callback 
disabled     */
+#define  USE_HAL_SPI_REGISTER_CALLBACKS       0U    /* SPI register callback 
disabled       */
+#define  USE_HAL_SRAM_REGISTER_CALLBACKS      0U    /* SRAM register callback 
disabled      */
+#define  USE_HAL_TIM_REGISTER_CALLBACKS       0U    /* TIM register callback 
disabled       */
+#define  USE_HAL_UART_REGISTER_CALLBACKS      0U    /* UART register callback 
disabled      */
+#define  USE_HAL_USART_REGISTER_CALLBACKS     0U    /* USART register callback 
disabled     */
+#define  USE_HAL_WWDG_REGISTER_CALLBACKS      0U    /* WWDG register callback 
disabled      */
+#define  USE_HAL_XSPI_REGISTER_CALLBACKS      0U    /* XSPI register callback 
disabled      */
+
+/* ############################################ SPI peripheral configuration 
######################################## */
+
+/* CRC FEATURE: Use to activate CRC feature inside HAL SPI Driver
+ * Activated: CRC code is present inside driver
+ * Deactivated: CRC code cleaned from driver
+  */
+#define USE_SPI_CRC                   1U
+
+
+/* Includes 
----------------------------------------------------------------------------------------------------------*/
+/**
+  * @brief Include module's header file
+  */
+
+#ifdef HAL_RCC_MODULE_ENABLED
+#include "stm32h5xx_hal_rcc.h"
+#endif /* HAL_RCC_MODULE_ENABLED */
+
+#ifdef HAL_GPIO_MODULE_ENABLED
+#include "stm32h5xx_hal_gpio.h"
+#endif /* HAL_GPIO_MODULE_ENABLED */
+
+#ifdef HAL_ICACHE_MODULE_ENABLED
+#include "stm32h5xx_hal_icache.h"
+#endif /* HAL_ICACHE_MODULE_ENABLED */
+
+#ifdef HAL_DCACHE_MODULE_ENABLED
+#include "stm32h5xx_hal_dcache.h"
+#endif /* HAL_DCACHE_MODULE_ENABLED */
+
+#ifdef HAL_GTZC_MODULE_ENABLED
+#include "stm32h5xx_hal_gtzc.h"
+#endif /* HAL_GTZC_MODULE_ENABLED */
+
+#ifdef HAL_DMA_MODULE_ENABLED
+#include "stm32h5xx_hal_dma.h"
+#endif /* HAL_DMA_MODULE_ENABLED */
+
+#ifdef HAL_DTS_MODULE_ENABLED
+#include "stm32h5xx_hal_dts.h"
+#endif /* HAL_DTS_MODULE_ENABLED */
+
+#ifdef HAL_CORTEX_MODULE_ENABLED
+#include "stm32h5xx_hal_cortex.h"
+#endif /* HAL_CORTEX_MODULE_ENABLED */
+
+#ifdef HAL_PKA_MODULE_ENABLED
+#include "stm32h5xx_hal_pka.h"
+#endif /* HAL_PKA_MODULE_ENABLED */
+
+#ifdef HAL_ADC_MODULE_ENABLED
+#include "stm32h5xx_hal_adc.h"
+#endif /* HAL_ADC_MODULE_ENABLED */
+
+#ifdef HAL_CRC_MODULE_ENABLED
+#include "stm32h5xx_hal_crc.h"
+#endif /* HAL_CRC_MODULE_ENABLED */
+
+#ifdef HAL_CRYP_MODULE_ENABLED
+#include "stm32h5xx_hal_cryp.h"
+#endif /* HAL_CRYP_MODULE_ENABLED */
+
+#ifdef HAL_DAC_MODULE_ENABLED
+#include "stm32h5xx_hal_dac.h"
+#endif /* HAL_DAC_MODULE_ENABLED */
+
+#ifdef HAL_FLASH_MODULE_ENABLED
+#include "stm32h5xx_hal_flash.h"
+#endif /* HAL_FLASH_MODULE_ENABLED */
+
+#ifdef HAL_HASH_MODULE_ENABLED
+#include "stm32h5xx_hal_hash.h"
+#endif /* HAL_HASH_MODULE_ENABLED */
+
+#ifdef HAL_SRAM_MODULE_ENABLED
+#include "stm32h5xx_hal_sram.h"
+#endif /* HAL_SRAM_MODULE_ENABLED */
+
+#ifdef HAL_SDRAM_MODULE_ENABLED
+#include "stm32h5xx_hal_sdram.h"
+#endif /* HAL_SDRAM_MODULE_ENABLED */
+
+#ifdef HAL_MMC_MODULE_ENABLED
+#include "stm32h5xx_hal_mmc.h"
+#endif /* HAL_MMC_MODULE_ENABLED */
+
+#ifdef HAL_NOR_MODULE_ENABLED
+#include "stm32h5xx_hal_nor.h"
+#endif /* HAL_NOR_MODULE_ENABLED */
+
+#ifdef HAL_NAND_MODULE_ENABLED
+#include "stm32h5xx_hal_nand.h"
+#endif /* HAL_NAND_MODULE_ENABLED */
+
+#ifdef HAL_I2C_MODULE_ENABLED
+#include "stm32h5xx_hal_i2c.h"
+#endif /* HAL_I2C_MODULE_ENABLED */
+
+#ifdef HAL_I2S_MODULE_ENABLED
+#include "stm32h5xx_hal_i2s.h"
+#endif /* HAL_I2S_MODULE_ENABLED */
+
+#ifdef HAL_I3C_MODULE_ENABLED
+#include "stm32h5xx_hal_i3c.h"
+#endif /* HAL_I3C_MODULE_ENABLED */
+
+#ifdef HAL_IWDG_MODULE_ENABLED
+#include "stm32h5xx_hal_iwdg.h"
+#endif /* HAL_IWDG_MODULE_ENABLED */
+
+#ifdef HAL_LPTIM_MODULE_ENABLED
+#include "stm32h5xx_hal_lptim.h"
+#endif /* HAL_LPTIM_MODULE_ENABLED */
+
+#ifdef HAL_PWR_MODULE_ENABLED
+#include "stm32h5xx_hal_pwr.h"
+#endif /* HAL_PWR_MODULE_ENABLED */
+
+#ifdef HAL_XSPI_MODULE_ENABLED
+#include "stm32h5xx_hal_xspi.h"
+#endif /* HAL_XSPI_MODULE_ENABLED */
+
+#ifdef HAL_RNG_MODULE_ENABLED
+#include "stm32h5xx_hal_rng.h"
+#endif /* HAL_RNG_MODULE_ENABLED */
+
+#ifdef HAL_RTC_MODULE_ENABLED
+#include "stm32h5xx_hal_rtc.h"
+#endif /* HAL_RTC_MODULE_ENABLED */
+
+#ifdef HAL_SAI_MODULE_ENABLED
+#include "stm32h5xx_hal_sai.h"
+#endif /* HAL_SAI_MODULE_ENABLED */
+
+#ifdef HAL_SD_MODULE_ENABLED
+#include "stm32h5xx_hal_sd.h"
+#endif /* HAL_SD_MODULE_ENABLED */
+
+#ifdef HAL_SMBUS_MODULE_ENABLED
+#include "stm32h5xx_hal_smbus.h"
+#endif /* HAL_SMBUS_MODULE_ENABLED */
+
+#ifdef HAL_SPI_MODULE_ENABLED
+#include "stm32h5xx_hal_spi.h"
+#endif /* HAL_SPI_MODULE_ENABLED */
+
+#ifdef HAL_TIM_MODULE_ENABLED
+#include "stm32h5xx_hal_tim.h"
+#endif /* HAL_TIM_MODULE_ENABLED */
+
+#ifdef HAL_UART_MODULE_ENABLED
+#include "stm32h5xx_hal_uart.h"
+#endif /* HAL_UART_MODULE_ENABLED */
+
+#ifdef HAL_USART_MODULE_ENABLED
+#include "stm32h5xx_hal_usart.h"
+#endif /* HAL_USART_MODULE_ENABLED */
+
+#ifdef HAL_IRDA_MODULE_ENABLED
+#include "stm32h5xx_hal_irda.h"
+#endif /* HAL_IRDA_MODULE_ENABLED */
+
+#ifdef HAL_SMARTCARD_MODULE_ENABLED
+#include "stm32h5xx_hal_smartcard.h"
+#endif /* HAL_SMARTCARD_MODULE_ENABLED */
+
+#ifdef HAL_WWDG_MODULE_ENABLED
+#include "stm32h5xx_hal_wwdg.h"
+#endif /* HAL_WWDG_MODULE_ENABLED */
+
+#ifdef HAL_PCD_MODULE_ENABLED
+#include "stm32h5xx_hal_pcd.h"
+#endif /* HAL_PCD_MODULE_ENABLED */
+
+#ifdef HAL_HCD_MODULE_ENABLED
+#include "stm32h5xx_hal_hcd.h"
+#endif /* HAL_HCD_MODULE_ENABLED */
+
+#ifdef HAL_COMP_MODULE_ENABLED
+#include "stm32h5xx_hal_comp.h"
+#endif /* HAL_COMP_MODULE_ENABLED */
+
+#ifdef HAL_CORDIC_MODULE_ENABLED
+#include "stm32h5xx_hal_cordic.h"
+#endif /* HAL_CORDIC_MODULE_ENABLED */
+
+#ifdef HAL_DCMI_MODULE_ENABLED
+#include "stm32h5xx_hal_dcmi.h"
+#endif /* HAL_DCMI_MODULE_ENABLED */
+
+#ifdef HAL_EXTI_MODULE_ENABLED
+#include "stm32h5xx_hal_exti.h"
+#endif /* HAL_EXTI_MODULE_ENABLED */
+
+#ifdef HAL_ETH_MODULE_ENABLED
+#include "stm32h5xx_hal_eth.h"
+#endif /* HAL_ETH_MODULE_ENABLED */
+
+#ifdef HAL_FDCAN_MODULE_ENABLED
+#include "stm32h5xx_hal_fdcan.h"
+#endif /* HAL_FDCAN_MODULE_ENABLED */
+
+#ifdef HAL_CEC_MODULE_ENABLED
+#include "stm32h5xx_hal_cec.h"
+#endif /* HAL_CEC_MODULE_ENABLED */
+
+#ifdef HAL_FMAC_MODULE_ENABLED
+#include "stm32h5xx_hal_fmac.h"
+#endif /* HAL_FMAC_MODULE_ENABLED */
+
+#ifdef HAL_OPAMP_MODULE_ENABLED
+#include "stm32h5xx_hal_opamp.h"
+#endif /* HAL_OPAMP_MODULE_ENABLED */
+
+#ifdef HAL_OTFDEC_MODULE_ENABLED
+#include "stm32h5xx_hal_otfdec.h"
+#endif /* HAL_OTFDEC_MODULE_ENABLED */
+
+#ifdef HAL_PSSI_MODULE_ENABLED
+#include "stm32h5xx_hal_pssi.h"
+#endif /* HAL_PSSI_MODULE_ENABLED */
+
+#ifdef HAL_RAMCFG_MODULE_ENABLED
+#include "stm32h5xx_hal_ramcfg.h"
+#endif /* HAL_RAMCFG_MODULE_ENABLED */
+
+/* Exported macro 
----------------------------------------------------------------------------------------------------*/
+#ifdef  USE_FULL_ASSERT
+/**
+  * @brief  The assert_param macro is used for function's parameters check.
+  * @param  expr: If expr is false, it calls assert_failed function
+  *         which reports the name of the source file and the source
+  *         line number of the call that failed.
+  *         If expr is true, it returns no value.
+  * @retval None
+  */
+#define assert_param(expr) ((expr) ? (void)0U : assert_failed((uint8_t 
*)__FILE__, __LINE__))
+/* Exported functions 
-----------------------------------------------------------------------------------------------
 */
+void assert_failed(uint8_t *file, uint32_t line);
+#else
+#define assert_param(expr) ((void)0U)
+#endif /* USE_FULL_ASSERT */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* STM32H5xx_HAL_CONF_H */
diff --git a/hw/bsp/weact_h503cb/link/include/bsp_config.ld.h 
b/hw/bsp/weact_h503cb/link/include/bsp_config.ld.h
new file mode 100644
index 000000000..76e485ea4
--- /dev/null
+++ b/hw/bsp/weact_h503cb/link/include/bsp_config.ld.h
@@ -0,0 +1,22 @@
+/*
+ * 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 IMAGE
+#define IMAGE BOOT
+#endif
diff --git a/hw/bsp/weact_h503cb/pkg.yml b/hw/bsp/weact_h503cb/pkg.yml
new file mode 100644
index 000000000..350c57b3b
--- /dev/null
+++ b/hw/bsp/weact_h503cb/pkg.yml
@@ -0,0 +1,44 @@
+#
+# 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.
+#
+
+pkg.name: hw/bsp/weact_h503cb
+pkg.type: bsp
+bsp.url: https://github.com/WeActStudio/WeActStudio.STM32H503CoreBoard
+pkg.description: BSP definition for the WeAct STM32H503CBU6 board.
+pkg.author: "Apache Mynewt <[email protected]>"
+pkg.homepage: "http://mynewt.apache.org/";
+pkg.keywords:
+    - stm32
+    - stm32h5
+
+pkg.cflags:
+    - -DSTM32H503xx
+    - -DUSE_FULL_LL_DRIVER
+
+pkg.cflags.HARDFLOAT:
+    - -mfloat-abi=hard -mfpu=fpv4-sp-d16
+
+pkg.deps:
+    - "@apache-mynewt-core/hw/mcu/stm/stm32h5xx"
+    - "@apache-mynewt-core/libc"
+    - "@apache-mynewt-core/hw/drivers/flash/spiflash"
+    - "@apache-mynewt-core/hw/bus/drivers/spi_hal"
+    - "@apache-mynewt-core/hw/scripts"
+    - "@apache-mynewt-core/hw/bus/drivers/i2c_hal"
+    - "@apache-mynewt-core/boot/startup"
diff --git a/hw/bsp/weact_h503cb/src/hal_bsp.c 
b/hw/bsp/weact_h503cb/src/hal_bsp.c
new file mode 100644
index 000000000..4033ff15d
--- /dev/null
+++ b/hw/bsp/weact_h503cb/src/hal_bsp.c
@@ -0,0 +1,171 @@
+/*
+ * 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.
+ */
+#include <assert.h>
+
+#include <bsp/bsp.h>
+#include <os/mynewt.h>
+#include <mynewt_cm.h>
+
+#include <hal/hal_bsp.h>
+#include <hal/hal_flash_int.h>
+#include <hal/hal_system.h>
+
+#include <stm32h5xx.h>
+#include <stm32_common/stm32_hal.h>
+#include <bus/drivers/spi_common.h>
+#include <spiflash/spiflash.h>
+
+#if MYNEWT_VAL(PWM_0)
+#include <pwm_stm32/pwm_stm32.h>
+#endif
+
+#if MYNEWT_VAL(PWM_0)
+struct stm32_pwm_conf os_bsp_pwm0_cfg = {
+    .tim = TIM3,
+    .irq = TIM3_IRQn,
+};
+#endif
+
+#if MYNEWT_VAL(UART_1)
+const struct stm32_uart_cfg os_bsp_uart1_cfg = {
+    .suc_uart = USART1,
+    .suc_rcc_reg = &RCC->APB2ENR,
+    .suc_rcc_dev = RCC_APB2ENR_USART1EN,
+    .suc_pin_tx = MYNEWT_VAL(UART_1_PIN_TX),
+    .suc_pin_rx = MYNEWT_VAL(UART_1_PIN_RX),
+    .suc_pin_rts = MYNEWT_VAL(UART_1_PIN_RTS),
+    .suc_pin_cts = MYNEWT_VAL(UART_1_PIN_CTS),
+    .suc_pin_af = GPIO_AF7_USART1,
+    .suc_irqn = USART1_IRQn,
+};
+#endif
+
+#if MYNEWT_VAL(UART_2)
+const struct stm32_uart_cfg os_bsp_uart2_cfg = {
+    .suc_uart = USART2,
+    .suc_rcc_reg = &RCC->APB1LENR,
+    .suc_rcc_dev = RCC_APB1LENR_USART2EN,
+    .suc_pin_tx = MYNEWT_VAL(UART_2_PIN_TX),
+    .suc_pin_rx = MYNEWT_VAL(UART_2_PIN_RX),
+    .suc_pin_rts = MYNEWT_VAL(UART_2_PIN_RTS),
+    .suc_pin_cts = MYNEWT_VAL(UART_2_PIN_CTS),
+    .suc_pin_af = GPIO_AF7_USART2,
+    .suc_irqn = USART2_IRQn,
+};
+#endif
+
+#if MYNEWT_VAL(UART_3)
+const struct stm32_uart_cfg os_bsp_uart3_cfg = {
+    .suc_uart = USART3,
+    .suc_rcc_reg = &RCC->APB1LENR,
+    .suc_rcc_dev = RCC_APB1LENR_USART3EN,
+    .suc_pin_tx = MYNEWT_VAL(UART_3_PIN_TX),
+    .suc_pin_rx = MYNEWT_VAL(UART_3_PIN_RX),
+    .suc_pin_rts = MYNEWT_VAL(UART_3_PIN_RTS),
+    .suc_pin_cts = MYNEWT_VAL(UART_3_PIN_CTS),
+    .suc_pin_af = GPIO_AF7_USART3,
+    .suc_irqn = USART3_IRQn,
+};
+#endif
+
+#if MYNEWT_VAL(I2C_0)
+const struct stm32_hal_i2c_cfg os_bsp_i2c0_cfg = {
+    .hic_i2c = I2C1,
+    .hic_rcc_reg = &RCC->APB1LENR,
+    .hic_rcc_dev = RCC_APB1LENR_I2C1EN,
+    .hic_pin_sda = MYNEWT_VAL(I2C_0_PIN_SDA),
+    .hic_pin_scl = MYNEWT_VAL(I2C_0_PIN_SCL),
+    .hic_pin_af = GPIO_AF4_I2C1,
+    .hic_10bit = 0,
+};
+#endif
+
+#if MYNEWT_VAL(I2C_1)
+const struct stm32_hal_i2c_cfg os_bsp_i2c1_cfg = {
+    .hic_i2c = I2C2,
+    .hic_rcc_reg = &RCC->APB1LENR,
+    .hic_rcc_dev = RCC_APB1LENR_I2C2EN,
+    .hic_pin_sda = MYNEWT_VAL(I2C_1_PIN_SDA),
+    .hic_pin_scl = MYNEWT_VAL(I2C_1_PIN_SCL),
+    .hic_pin_af = GPIO_AF4_I2C2,
+    .hic_10bit = 0,
+};
+#endif
+
+static const struct hal_bsp_mem_dump dump_cfg[] = {
+    [0] = {
+        .hbmd_start = &_ram_start,
+        .hbmd_size = RAM_SIZE,
+    },
+};
+
+extern const struct hal_flash stm32_flash_dev;
+
+static const struct hal_flash *flash_devs[] = {
+    [0] = &stm32_flash_dev,
+#if MYNEWT_VAL(SPIFLASH)
+    [1] = &spiflash_dev.hal,
+#endif
+};
+
+const struct hal_flash *
+hal_bsp_flash_dev(uint8_t id)
+{
+    if (id >= ARRAY_SIZE(flash_devs)) {
+        return NULL;
+    }
+
+    return flash_devs[id];
+}
+
+const struct hal_bsp_mem_dump *
+hal_bsp_core_dump(int *area_cnt)
+{
+    *area_cnt = ARRAY_SIZE(dump_cfg);
+
+    return dump_cfg;
+}
+
+void
+hal_bsp_init(void)
+{
+    stm32_periph_create();
+}
+
+void
+hal_bsp_deinit(void)
+{
+    Cortex_DisableAll();
+}
+
+/**
+ * Returns the configured priority for the given interrupt. If no priority
+ * configured, return the priority passed in
+ *
+ * @param irq_num
+ * @param pri
+ *
+ * @return uint32_t
+ */
+uint32_t
+hal_bsp_get_nvic_priority(int irq_num, uint32_t pri)
+{
+    /* Add any interrupt priorities configured by the bsp here */
+    return pri;
+}
diff --git a/hw/bsp/weact_h503cb/syscfg.yml b/hw/bsp/weact_h503cb/syscfg.yml
new file mode 100644
index 000000000..28ae0f295
--- /dev/null
+++ b/hw/bsp/weact_h503cb/syscfg.yml
@@ -0,0 +1,109 @@
+#
+# 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.
+#
+
+syscfg.defs:
+    FLASH_LAYOUT:
+        choices:
+            - default
+            - no_bootloader
+            - bootloader_and_spiflash_1m
+            - bootloader_and_spiflash_8m
+        value: default
+syscfg.defs.'(FLASH_LAYOUT=="no_bootloader")':
+    BOOT_LOADER:
+        description: 'Build everything as bootloader'
+        value: 0
+
+syscfg.vals:
+    STM32_FLASH_SIZE_KB: 128
+    STM32_FLASH_NUM_AREAS: 16
+    MCU_RAM_START: 0x20000000
+    MCU_RAM_SIZE: 32K
+    MCU_TARGET: STM32H503
+    STM32_CLOCK_VOLTAGESCALING_CONFIG: 'PWR_REGULATOR_VOLTAGE_SCALE0'
+    STM32_CLOCK_HSI: 1
+    STM32_CLOCK_HSE: 1
+    STM32_CLOCK_HSE_BYPASS: 0
+    STM32_CLOCK_PLL1: 1
+    STM32_CLOCK_PLL1_SOURCE: LL_RCC_PLL1SOURCE_HSE
+    STM32_CLOCK_PLL1_PLLM: 4
+    STM32_CLOCK_PLL1_PLLN: 250
+    STM32_CLOCK_PLL1_PLLP: 2
+    STM32_CLOCK_PLL1_PLLQ: 10
+    STM32_CLOCK_PLL1_PLLR: 2
+    STM32_CLOCK_PLL1_RGE: 'RCC_PLL1_VCIRANGE_1'
+    STM32_CLOCK_AHB_DIVIDER: 'RCC_SYSCLK_DIV1'
+    STM32_CLOCK_APB1_DIVIDER: 'RCC_HCLK_DIV1'
+    STM32_CLOCK_APB2_DIVIDER: 'RCC_HCLK_DIV1'
+    STM32_CLOCK_APB3_DIVIDER: 'RCC_HCLK_DIV1'
+    STM32_FLASH_LATENCY: 'FLASH_LATENCY_6'
+    STM32_CLOCK_SYSCLK_SOURCE: LL_RCC_SYS_CLKSOURCE_PLL1
+    STM32_ENABLE_ICACHE: 1
+    WATCHDOG_INTERVAL: 28000
+    UART_0: 0
+    UART_1_PIN_TX: 'MCU_GPIO_PORTA(9)'
+    UART_1_PIN_RX: 'MCU_GPIO_PORTA(10)'
+    UART_2_PIN_TX: 'MCU_GPIO_PORTA(2)'
+    UART_2_PIN_RX: 'MCU_GPIO_PORTA(3)'
+    SPI_0_PIN_SS: 'MCU_GPIO_PORTA(4)'
+    SPI_0_PIN_SCK: 'MCU_GPIO_PORTA(5)'
+    SPI_0_PIN_MISO: 'MCU_GPIO_PORTA(6)'
+    SPI_0_PIN_MOSI: 'MCU_GPIO_PORTA(7)'
+    I2C_0_PIN_SCL: 'MCU_GPIO_PORTB(8)'
+    I2C_0_PIN_SDA: 'MCU_GPIO_PORTB(9)'
+    TIMER_0_TIM: 'TIM2'
+    TIMER_1_TIM: 'TIM3'
+    TIMER_2_TIM: 'TIM6'
+
+    BOOTUTIL_SINGLE_APPLICATION_SLOT: 1
+    BOOTUTIL_OVERWRITE_ONLY: 1
+    # Flasher parameters
+    MYNEWT_DOWNLOADER: stm32_programmer_cli
+    MYNEWT_DOWNLOADER_MFG_IMAGE_FLASH_OFFSET: 0x08000000
+    JLINK_TARGET: STM32H503CB
+
+# External SPI flash connected to SPI1 (PA4-PA7)
+syscfg.vals.'(FLASH_LAYOUT=="bootloader_and_spiflash_1m" || 
FLASH_LAYOUT=="bootloader_and_spiflash_8m")':
+    SPI_0_MASTER: 1
+    SPIFLASH: 1
+    SPIFLASH_SPI_NUM: 0
+    SPIFLASH_SPI_CS_PIN: 'MCU_GPIO_PORTA(4)'
+    SPIFLASH_SPI_MODE: 0
+    SPIFLASH_BAUDRATE: 8000
+    SPIFLASH_SECTOR_SIZE: 4096
+    SPIFLASH_PAGE_SIZE: 256
+    # Chip is detected at runtime from the list below
+    SPIFLASH_W25Q64JV: 1
+    SPIFLASH_W25Q128JV: 1
+    SPIFLASH_W25Q128JW: 1
+    SPIFLASH_W25Q128JW_IQ: 1
+
+syscfg.vals.'(FLASH_LAYOUT=="bootloader_and_spiflash_1m")':
+    SPIFLASH_SECTOR_COUNT: 256
+    SPIFLASH_W25Q80DV: 1
+    SPIFLASH_W25Q32JV: 1
+
+syscfg.vals.'(FLASH_LAYOUT=="bootloader_and_spiflash_8m")':
+    SPIFLASH_SECTOR_COUNT: 2048
+
+syscfg.vals.'(FLASH_LAYOUT=="bootloader_and_spiflash_1m" || 
FLASH_LAYOUT=="bootloader_and_spiflash_8m") && REBOOT_LOG_FCB':
+    REBOOT_LOG_FLASH_AREA: FLASH_AREA_REBOOT_LOG
+
+syscfg.vals.'(FLASH_LAYOUT=="bootloader_and_spiflash_1m" || 
FLASH_LAYOUT=="bootloader_and_spiflash_8m") && NFFS':
+    NFFS_FLASH_AREA: FLASH_AREA_NFFS

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