This is RUI3 SDK inside 3.2.0-p2_22q1_final.87 release.

boards.txt

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+# Copyright (c) 2014-2015 Arduino LLC.  All right reserved.
+# Copyright (c) 2016 Sandeep Mistry All right reserved.
+# Copyright (c) 2017 Adafruit Industries.  All right reserved.
+#
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2.1 of the License, or (at your option) any later version.
+#
+# This library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+# See the GNU Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this library; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+
+menu.softdevice=Bootloader
+menu.debug=Debug
+
+# ----------------------------------
+# WisDuo RAK3172 Evaluation Board
+# ----------------------------------
+WisDuoRAK3172EvaluationBoard.name=WisDuo RAK3172 Evaluation Board
+WisDuoRAK3172EvaluationBoard.bootloader.tool=bootburn
+WisDuoRAK3172EvaluationBoard.build.variant_h=variant_{build.board}.h
+WisDuoRAK3172EvaluationBoard.build.series=rak3172
+
+# Upload
+WisDuoRAK3172EvaluationBoard.upload.tool=uploader_3372
+WisDuoRAK3172EvaluationBoard.upload.protocol=uploader_3372
+WisDuoRAK3172EvaluationBoard.upload.use_1200bps_touch=true
+WisDuoRAK3172EvaluationBoard.upload.wait_for_upload_port=true
+WisDuoRAK3172EvaluationBoard.upload.maximum_size=815104
+WisDuoRAK3172EvaluationBoard.upload.maximum_data_size=237568
+
+# Build
+WisDuoRAK3172EvaluationBoard.build.mcu=cortex-m4
+WisDuoRAK3172EvaluationBoard.build.f_cpu=64000000
+WisDuoRAK3172EvaluationBoard.build.board=WisDuo_RAK3172_Evaluation_Board
+WisDuoRAK3172EvaluationBoard.build.core=STM32WLE
+WisDuoRAK3172EvaluationBoard.build.variant=WisDuo_RAK3172_Evaluation_Board
+WisDuoRAK3172EvaluationBoard.build.usb_manufacturer="RAKwireless"
+WisDuoRAK3172EvaluationBoard.build.usb_product="WisDuo RAK3172 Evaluation Board"
+WisDuoRAK3172EvaluationBoard.build.extra_flags=-DSTM32WL55xx {build.flags.usb}
+WisDuoRAK3172EvaluationBoard.build.ldscript=flash_stm32wle5xx.ld
+WisDuoRAK3172EvaluationBoard.build.vid=0x1A86
+WisDuoRAK3172EvaluationBoard.build.pid=0x7523
+
+# Debug Menu
+WisDuoRAK3172EvaluationBoard.menu.debug.l0=Level 0 (Release)
+WisDuoRAK3172EvaluationBoard.menu.debug.l0.build.debug_flags=-DCFG_DEBUG=0
+WisDuoRAK3172EvaluationBoard.menu.debug.l1=Level 1 (Error Message)
+WisDuoRAK3172EvaluationBoard.debug.l1.build.debug_flags=-DCFG_DEBUG=1
+WisDuoRAK3172EvaluationBoard.menu.debug.l2=Level 2 (Full Debug)
+WisDuoRAK3172EvaluationBoard.menu.debug.l2.build.debug_flags=-DCFG_DEBUG=2
+WisDuoRAK3172EvaluationBoard.menu.debug.l3=Level 3 (Segger SystemView)
+WisDuoRAK3172EvaluationBoard.menu.debug.l3.build.debug_flags=-DCFG_DEBUG=3
+WisDuoRAK3172EvaluationBoard.menu.debug.l3.build.sysview_flags=-DCFG_SYSVIEW=1
+
+# ----------------------------------
+# WisDuo RAK3172-SiP Board
+# ----------------------------------
+WisDuoRAK3172SiPBoard.name=WisDuo RAK3272-SiP Board
+WisDuoRAK3172SiPBoard.bootloader.tool=bootburn
+WisDuoRAK3172SiPBoard.build.variant_h=variant_{build.board}.h
+WisDuoRAK3172SiPBoard.build.series=rak3172-sip
+
+# Upload
+WisDuoRAK3172SiPBoard.upload.tool=uploader_3372
+WisDuoRAK3172SiPBoard.upload.protocol=uploader_3372
+WisDuoRAK3172SiPBoard.upload.use_1200bps_touch=true
+WisDuoRAK3172SiPBoard.upload.wait_for_upload_port=true
+WisDuoRAK3172SiPBoard.upload.maximum_size=815104
+WisDuoRAK3172SiPBoard.upload.maximum_data_size=237568
+
+# Build
+WisDuoRAK3172SiPBoard.build.mcu=cortex-m4
+WisDuoRAK3172SiPBoard.build.f_cpu=64000000
+WisDuoRAK3172SiPBoard.build.board=WisDuo_RAK3272-SiP_Board
+WisDuoRAK3172SiPBoard.build.core=STM32WLE
+WisDuoRAK3172SiPBoard.build.variant=WisDuo_RAK3272-SiP_Board
+WisDuoRAK3172SiPBoard.build.usb_manufacturer="RAKwireless"
+WisDuoRAK3172SiPBoard.build.usb_product="WisDuo RAK3272-SiP Board"
+WisDuoRAK3172SiPBoard.build.extra_flags=-DSTM32WL55xx {build.flags.usb}
+WisDuoRAK3172SiPBoard.build.ldscript=flash_stm32wle5xx.ld
+WisDuoRAK3172SiPBoard.build.vid=0x1A86
+WisDuoRAK3172SiPBoard.build.pid=0x7523
+
+# Debug Menu
+WisDuoRAK3172SiPBoard.menu.debug.l0=Level 0 (Release)
+WisDuoRAK3172SiPBoard.menu.debug.l0.build.debug_flags=-DCFG_DEBUG=0
+WisDuoRAK3172SiPBoard.menu.debug.l1=Level 1 (Error Message)
+WisDuoRAK3172SiPBoard.debug.l1.build.debug_flags=-DCFG_DEBUG=1
+WisDuoRAK3172SiPBoard.menu.debug.l2=Level 2 (Full Debug)
+WisDuoRAK3172SiPBoard.menu.debug.l2.build.debug_flags=-DCFG_DEBUG=2
+WisDuoRAK3172SiPBoard.menu.debug.l3=Level 3 (Segger SystemView)
+WisDuoRAK3172SiPBoard.menu.debug.l3.build.debug_flags=-DCFG_DEBUG=3
+WisDuoRAK3172SiPBoard.menu.debug.l3.build.sysview_flags=-DCFG_SYSVIEW=1
+

cores/STM32WLE/app/app_glue.cpp

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+extern void setup();
+extern void loop();
+
+extern "C" void rui_setup() {
+    setup();
+}
+
+extern "C" void rui_loop() {
+    loop();
+}
+

cores/STM32WLE/component/core/mcu/stm32wle5xx/flash_stm32wle5xx.ld

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+/*
+** LinkerScript
+** Note: For specific memory allocation, linker and startup files must be customized.
+**       Refer to STM32CubeIDE user guide (UM2609), chapter "Modify the linker script".
+*/
+
+/* Entry Point */
+ENTRY(Reset_Handler)
+
+/* Highest address of the user mode stack */
+_estack = ORIGIN(RAM1) + LENGTH(RAM1); /* end of "SRAM1" Ram type memory */
+
+_Min_Heap_Size = 0x200;      /* required amount of heap  */
+_Min_Stack_Size = 0x2000; /* required amount of stack */
+
+/* Memories definition */
+MEMORY
+{
+  BL     (rx)    : ORIGIN = 0x08000000, LENGTH = 24K    /* Bootloader */
+  ROM    (rx)    : ORIGIN = 0x08006000, LENGTH = 232K   /* Application */
+/*Originally RAM1 and RAM2 are the same size: 32K, but it is not enough size for stack*/
+  RAM1   (xrw)   : ORIGIN = 0x20000000, LENGTH = 56K    /* Non-backup SRAM1 */
+  RAM2   (xrw)   : ORIGIN = 0x2000E000, LENGTH = 8K    /* Backup SRAM2 */
+}
+
+/* Sections */
+SECTIONS
+{
+  /* The startup code into "ROM" Rom type memory */
+  .isr_vector :
+  {
+    . = ALIGN(8);
+    KEEP(*(.isr_vector)) /* Startup code */
+    . = ALIGN(8);
+  } >ROM
+
+  /* The program code and other data into "ROM" Rom type memory */
+  .text :
+  {
+    . = ALIGN(8);
+    *(.text)           /* .text sections (code) */
+    *(.text*)          /* .text* sections (code) */
+    *(.glue_7)         /* glue arm to thumb code */
+    *(.glue_7t)        /* glue thumb to arm code */
+    *(.eh_frame)
+
+    KEEP (*(.init))
+    KEEP (*(.fini))
+
+    . = ALIGN(8);
+    _etext = .;        /* define a global symbols at end of code */
+  } >ROM
+
+  /* Constant data into "ROM" Rom type memory */
+  .rodata :
+  {
+    . = ALIGN(8);
+    *(.rodata)         /* .rodata sections (constants, strings, etc.) */
+    *(.rodata*)        /* .rodata* sections (constants, strings, etc.) */
+    . = ALIGN(8);
+  } >ROM
+
+  .ARM.extab   : { 
+    . = ALIGN(8);
+    *(.ARM.extab* .gnu.linkonce.armextab.*)
+    . = ALIGN(8);
+  } >ROM
+
+  .ARM : {
+    . = ALIGN(8);
+    __exidx_start = .;
+    *(.ARM.exidx*)
+    __exidx_end = .;
+    . = ALIGN(8);
+  } >ROM
+
+  .preinit_array     :
+  {
+    . = ALIGN(8);
+    PROVIDE_HIDDEN (__preinit_array_start = .);
+    KEEP (*(.preinit_array*))
+    PROVIDE_HIDDEN (__preinit_array_end = .);
+    . = ALIGN(8);
+  } >ROM
+
+  .init_array :
+  {
+    . = ALIGN(8);
+    PROVIDE_HIDDEN (__init_array_start = .);
+    KEEP (*(SORT(.init_array.*)))
+    KEEP (*(.init_array*))
+    PROVIDE_HIDDEN (__init_array_end = .);
+    . = ALIGN(8);
+  } >ROM
+
+  .fini_array :
+  {
+    . = ALIGN(8);
+    PROVIDE_HIDDEN (__fini_array_start = .);
+    KEEP (*(SORT(.fini_array.*)))
+    KEEP (*(.fini_array*))
+    PROVIDE_HIDDEN (__fini_array_end = .);
+    . = ALIGN(8);
+  } >ROM
+
+  /* Used by the startup to initialize data */
+  _sidata = LOADADDR(.data);
+
+    .atcmd_queue :
+  {
+    PROVIDE(__start_atcmd_queue = .);
+    KEEP(*(.atcmd_queue))
+    PROVIDE(__stop_atcmd_queue = .);
+  } > ROM
+
+  /* Initialized data sections into "SRAM1" Ram type memory */
+  .data : 
+  {
+    . = ALIGN(8);
+    _sdata = .;        /* create a global symbol at data start */
+    *(.data)           /* .data sections */
+    *(.data*)          /* .data* sections */
+
+    . = ALIGN(8);
+    _edata = .;        /* define a global symbol at data end */
+
+  } >RAM1 AT> ROM
+
+  /* Uninitialized data section into "SRAM1" Ram type memory */
+  . = ALIGN(8);
+  .bss :
+  {
+    /* This is used by the startup in order to initialize the .bss section */
+    _sbss = .;         /* define a global symbol at bss start */
+    __bss_start__ = _sbss;
+    *(.bss)
+    *(.bss*)
+    *(COMMON)
+
+    . = ALIGN(8);
+    _ebss = .;         /* define a global symbol at bss end */
+    __bss_end__ = _ebss;
+  } >RAM1
+
+  /* Data section into "SRAM1" Ram type memory: Non-backup SRAM1 dedicated to CM4 */
+  . = ALIGN(8);
+  RAM1_region :
+  {
+    _sRAM1_region = .;         /* define a global symbol at section start */
+    *(.RAM1_region)
+
+    . = ALIGN(8);
+    _eRAM1_region = .;         /* define a global symbol at section end */
+  } >RAM1
+
+  /* Data section into "SRAM2" Ram type memory: Backup SRAM2 dedicated to CM4 */
+  . = ALIGN(8);
+  RAM2_region :
+  {
+    _sRAM2_region = .;         /* define a global symbol at section start */
+    *(.RAM2_region)
+
+    . = ALIGN(8);
+    _eRAM2_region = .;         /* define a global symbol at section end */
+  } >RAM2
+
+  /* User_heap_stack section, used to check that there is enough "SRAM1" Ram  type memory left */
+  ._user_heap_stack :
+  {
+    . = ALIGN(8);
+    PROVIDE ( end = . );
+    PROVIDE ( _end = . );
+    . = . + _Min_Heap_Size;
+    . = . + _Min_Stack_Size;
+    . = ALIGN(8);
+  } >RAM1
+
+  /* Remove information from the compiler libraries */
+  /DISCARD/ :
+  {
+    libc.a ( * )
+    libm.a ( * )
+    libgcc.a ( * )
+  }
+
+  .ARM.attributes 0 : { *(.ARM.attributes) }
+}

cores/STM32WLE/component/core/mcu/stm32wle5xx/mcu_basic.h

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+#ifndef __MCU_BASIC_H__
+#define __MCU_BASIC_H__
+
+#define MCU_SYS_CONFIG_NVM_ADDR           0x0803F000
+#define MCU_USER_DATA_NVM_ADDR            0x08037800
+#define MCU_FACTORY_DEFAULT_NVM_ADDR      0x08037000
+
+#endif

cores/STM32WLE/component/core/mcu/stm32wle5xx/uhal/uhal_adc.h

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+#ifndef _UHAL_ADC_H_
+#define _UHAL_ADC_H_
+
+#include <stdint.h>
+#include <stddef.h>
+#include "udrv_adc.h"
+#include "udrv_errno.h"
+#include "stm32wlxx_hal.h"
+
+#define VDDA_APPLI                       ((uint16_t)1024)
+
+#define DIGITAL_SCALE_6BITS              ((uint16_t) 0x003F)
+#define DIGITAL_SCALE_8BITS              ((uint16_t) 0x00FF)
+#define DIGITAL_SCALE_10BITS             ((uint16_t) 0x03FF)
+#define DIGITAL_SCALE_12BITS             ((uint16_t) 0x0FFF)
+
+#define VAR_CONVERTED_DATA_INIT_VALUE    (DIGITAL_SCALE_12BITS + 1)
+
+int32_t uhal_adc_read (uint32_t pin, uint16_t *value);
+void uhal_adc_suspend (void);
+void uhal_adc_resume (void);
+void uhal_adc_set_resolution (UDRV_ADC_RESOLUTION resolution);
+UDRV_ADC_RESOLUTION uhal_adc_get_resolution (void);
+void uhal_adc_set_mode (UDRV_ADC_MODE mode);
+UDRV_ADC_MODE uhal_adc_get_mode (void);
+
+#endif  // #ifndef _UHAL_ADC_H_

cores/STM32WLE/component/core/mcu/stm32wle5xx/uhal/uhal_delay.h

@@ -0,0 +1,12 @@
+#ifndef _UHAL_DELAY_H_
+#define _UHAL_DELAY_H_
+
+#include <stdint.h>
+#include <stddef.h>
+#include "stm32wlxx_hal.h"
+
+void uhal_delay_ms (uint32_t ms_time);
+
+void uhal_delay_us (uint32_t us_time);
+
+#endif  // #ifndef _UHAL_DELAY_H_

cores/STM32WLE/component/core/mcu/stm32wle5xx/uhal/uhal_dfu.h

@@ -0,0 +1,10 @@
+#ifndef _UHAL_DFU_H_
+#define _UHAL_DFU_H_
+
+#include <stdint.h>
+#include <stddef.h>
+#include "stm32wle5xx.h"
+
+void uhal_enter_dfu (void);
+
+#endif  // #ifndef _UHAL_DFU_H_

cores/STM32WLE/component/core/mcu/stm32wle5xx/uhal/uhal_flash.h

@@ -0,0 +1,28 @@
+#ifndef _UHAL_FLASH_H_
+#define _UHAL_FLASH_H_
+
+#include <stdint.h>
+#include <stddef.h>
+#include "udrv_flash.h"
+#include "udrv_errno.h"
+#include "stm32wlxx_hal.h"
+
+void uhal_flash_init (void);
+
+void uhal_flash_deinit (void);
+
+int32_t uhal_flash_write (uint32_t addr, uint8_t *buff, uint32_t len);
+
+int32_t uhal_flash_read (uint32_t addr, uint8_t *buff, uint32_t len);
+
+int32_t uhal_flash_erase (uint32_t addr, uint32_t len);
+
+uint32_t uhal_flash_get_page_size(void);
+
+bool uhal_flash_check_addr_valid(uint32_t addr, uint32_t len);
+
+void uhal_flash_suspend(void);
+
+void uhal_flash_resume(void);
+
+#endif  // #ifndef _UHAL_FLASH_H_