Stm32l4 jump to bootloader

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stm32l4 jump to bootloader Hello SEGGER-Forum: Situation is that bootloader does not jump to application. User Manual: Pdf . 9. SWD) and the bootloader interface (UART and USB). e. \ OLPC boot script unfreeze " u:\boot\initrd" to ramdisk boot u:\boot\vmlinuz root=sda1. I'm working with an STM32L476ZG with an external flash connected through the FMC interface set up as NOR Flash memory starting at address 0x64000000. Przedstawimy sposób wymiany zawartości pamięci programu Flash w mikrokontrolerach STM32 z wykorzystaniem nośnika w postaci karty SD. Issues. I wrote a custom bootloader to write code to this external flash address and I am now working to jump to application but am running into problems. A fork compatible with mainline Kernel (from v4. 7): 相关参考文档. 在STM32L011上通过I2C接口实现IAP 19. Press and hold the BOOT button on your Swan, press RESET, then release both buttons to cause the Swan to jump into its bootloader. Here is a simple olpc. Can be effectively combined with RTOS. Along with custom BootLoader development, you will also understand. c cpp assembly stm32 bootloader uart keil stm32cubemx keil5 stm32l4 uart i ask because of an answer to a similar quastion which can be found here: Jump to Bootloader in STM32 through appliction i. To see the code, see here . Another fundamental aspect of STM32 Step-by-Step is our new Community. 1) The different memory organization of a microcontroller. The following source code snippets will help you to build you own bootloader/application project providing by the minimum code that is required to jump from one to the other. Considering a microcontroller(in my case STM32L4 series) once the new firmware image is written into the flash, how the new start address of the application can be intimated to the bootloader? 7) Jump to the specified address to execute the code. Name "Hello" is because both projects are based on empty/default SEGGER project. So HOST MCU is requesting to get data from dsPIC33CK controller. Apr 02, 2018 · STM32 Baremetal Examples. 16 It is a common practice in embedded system these days to use a bootloader-application architecture. h >. -następny 16kb na dane -reszta na aplikacje -> zaczynamy od adresu 0x8000C000 Do tej pory: -stworzyłem własny *. Pull requests. e using Boot 0 and Boot 1 Pins in Boot mode from User flash The User "JF0 STM32 Bootloader. Its additional features are: • Multi-OS support: Windows®, Linux®, macOS® • Debug and bootloader interfaces support • ST-Link V3 bridges. 跳转代码实现. The bootloader software uses interrupts and communicate over an RS485 bus. The nice thing about these chips is that they don’t require much setup, so you can start to learn about them bit by bit, starting with almost no code. 4) Vector table mapping and vector table relocation use case of arm cortex mx The bootloader setup all the clocks, gpio and a few base peripherals and the application code would assume at start-up that the bootloader had ran! There is definitely more than one way to make the jump successful. org. Press F1 or shift + cmd/ctrl + P and select Arduino: Examples from the dropdown menu. thanks for the reply let me tell you how am i checking the jump from bootloader code to my application. It is responsible for loading and transferring control to the operating system kernel software (such as the Hurd or the Linux). 1, 10/2018 . bootloader. AN2606; RM0351-STM32L4参考手册; 安富莱V7开发板用户手册; 进入BootLoader 硬件Boot引脚进入BootLoader模式. STM32L4 使用HAL库做IAP功能,bootloader跳转到APP后产生HardFault_Handler() 火柴棍mcu: 先烧写bootloader到mcu,再仿真模式运行app工程。 STM32MP157C-DK2 开机测试 i ask because of an answer to a similar quastion which can be found here: Jump to Bootloader in STM32 through appliction i. Jun 18, 2020 · Thus, in order to jump to the bootloader, address "0x1FF09800" should be used instead of "0x1FFF0000". bootloader, от bootstrap, петля сзади ботинка, + loader, загрузчик). , which the DFU bootloader requires, if you jump to it. The code causes the Swan to output 85 samples every second via serial which are then read by the Edge Impulse Data Forwarding utility. 今回は、デバッガでの書き込みが一般的になり、すっかりいらない子になっている気がする「DFU」での書き込みについてです。. STM32L496通过在复位时检测Boot0 Pin(PH3)和FlashOPTR寄存器中的nBoot1 bit状态进入Bootloader i ask because of an answer to a similar quastion which can be found here: Jump to Bootloader in STM32 through appliction i. STM32CubeProgrammer supports the Device Firmware Upgrade (DFU) USB class designed to download a firmware image to a USB device. Here are the important bits: The actual patch to crt0 chibios code is here ; the correct bootloader address is passed in the Makefile like this ; and finally the jump in the May 10, 2016 · This core would support the STM32L4, (if they exported the Cube files for that target) But at the moment it only has a USB CDC Serial device, and it will operate like libmaple, using the bootloader to upload via DFU before it switches to using the Serial USB CDC device built into the sketch. If it crashes at search run, you probably just pick it up and have it reset then search again. How did this APP address 0x0800 3000 come from? AN4758 Application note Proprietary code read-out protection on microcontrollers of the STM32L4 series Introduction Software providers are developing complex middleware solutions (Intellectual Propriety code), protecting these IP Codes is a high importance issue concerning the microcontrollers. • Делает jump на Jan 23, 2014 · STM32 Bootloader中 DFU使用限制 14. If Bank 2’s first address is a valid SRAM address, the bootloader swaps the banks to remap the Bank 2 at address 0 and jumps into Bank . bootloader, detailing each supported command. Jan 24, 2018 · As mentioned earlier, the STM32 microcontrollers include a DFU bootloader built into their ROM. 2. Nov 27, 2018 · Nov 27th 2018. STM32L011&STM32F091 空片检测进行 System Bootloader 编程注意事项 16. STM32L4 bootloader on internal flash jumping to application on external flash. On power-up or reset, a bootloader is a section of program memory that runs before the main code runs. , after the first 512 bytes. The approach is the trigger the MCU to enter BootLoader Mode via UART by only using Tx, Rx and Gnd pins. When the bootloader receives the Write Memory command, it transmits the ACK byte to the application. 3V, and i don’t press external RESET button during the process. The maximum data per phrase is 32 bytes, but the I than recompiled my bootloader after changing in bl_config. Finally, the bootloader prepares for the jump by resetting the peripherals, disabling the SysTick, setting the vector table and stack pointer, then the bootloader performs a jump to the application. Swan is a low-cost embeddable STM32L4-based microcontroller designed to accelerate the development and deployment of battery-powered solutions. In many cases, that simple script is all you really need. I appreciate you sharing your experience! Using the bootloader . I've been faced to a similar request, and found 2 ways to load the bootloader on-demand. c. e using Boot 0 and Boot 1 Pins in Boot mode from User flash The User "JF0 Bootloader 跳转到 RT-Thread 或 FreeRTOS (基于 STM32) 1. This document applies to the STM32 products embedding bootloader versions V3. STM32 Tutorial - Bootloader That Can Update And Jump To Multiple Applications By Kerjonews 2021 Happy Reading the Article STM32 Tutorial - Bootloader That Can Update And Jump To Multiple Applications May you find what you are looking for. First we need to understand … The purpose of this project is to bypass the physical requirements of the BootLoader access. This application note describes the USB DFU protocol used in STM32 microcontroller. e using Boot 0 and Boot 1 Pins in Boot mode from User flash The User "JF0 Nov 12, 2021 · После выполнения команды Go (jump в код пользователя) загрузчик сбрасывает значение AHB1ENR в 0x00000000, и таким образом CCM RAM, когда она имеется, не активна (должна быть разрешена повторно в коде Program the APP program; 2. e using Boot 0 and Boot 1 Pins in Boot mode from User flash The User "JF0 Jump to DFU bootloader from a stm32f042c6 application that uses usb cdc. 2) Memory aliasing and different boot modes of STM32. First supported target is the STM32 (Cortex M3 core) These run on Linux and Windows. x, V7. Dec 28, 2017 · The bootloader on the ADP1 detects certain keypresses, which can be used to make it load a 'recovery' image (second instance of the kernel and system), or put the phone into a mode where the developer can perform development tasks ('fastboot' mode), such as re-writing flash images, directly downloading and executing an alternate kernel image, etc. e using Boot 0 and Boot 1 Pins in Boot mode from User flash The User "JF0 Bootloader STM32 interrupt problem. To review, open the file in an editor that reveals hidden Unicode characters. This example demonstrates how to perform in-application-programming of a firmware located on an external SD card with FAT32 file system. fth script that doesn't do anything fancy; it just boots Linux from a USB disk with a ramdisk. , search. Z noty AN2606 (STM32 micrcontroller system memory boot mode) dowiadujemy się, że można to zrobić sprzętowo przy pomocy pinów BOOT0 i BOOT1. May 10, 2012 · Bootloader dla STM32 z obsługą karty SD – Mikrokontrolery STM32. Mar 19, 2014 · 今回から、STM32シリーズへのFlash書き込みについて書いていきます。. The solution offers a complete toolset to encrypt OEM binaries with the Trusted Package Creator software, the STM32CUBEProgrammer to flash securely the STM32, and the STM32HSM to transfer OEM Use internal flash in STM32F4 to save explored maze. I'm intending to implement a startup sequence in which if a pin is held low for a couple of seconds, then Teensy enters the bootloader instead of the normal user code. in. Raw. The peripheral driver library should make it relatively easy to use. e using Boot 0 and Boot 1 Pins in Boot mode from User flash The User "JF0 STM32L4x5 And STM32L4x6 Advanced ARM® Based 32 Bit MCUs Stm32l4 Reference Manual stm32l4_reference_manual. Bootloader obsługujący transfer Sep 28, 2021 · STM32L4 STM32L5 STM32WB Байт 3: Bootloader version (0 < version < 255), например 0x10 означает version 1. Throughout the years, many members expressed the desire to learn how to start programming on our platforms and this new initiative gives them the expertise. iot demo microcontroller firmware example scheduler stm32 freertos rtc rtos stm32l4 ultra-low-power stm32l496. The second firmware is just a blinking LED application. From eLinux. Jan 26, 2018 · STM32L4, USB, 固件, ic, TI /* Jump to user application */ 在默认情况下,芯片出厂内部的Bootloader会从0x8000000地址加载用户程序 Nov 01, 2016 · It is always best practice in Bootloader to reset the SYS TICK Timer , disable all the peripheral Interrupts before jumping to the Application. #include < avr/boot. なお、ここに書いた内容について、一切の責任を負いませ i ask because of an answer to a similar quastion which can be found here: Jump to Bootloader in STM32 through appliction i. Top. h the APP_START_ADDRESS from 0x0002_0000 to 0x0018_0000 to match your application. Considering the popularity of the Blue/Black Pill it would have a readability high chance of quantity world wide sales. After the kernel setup part receives control from the bootloader, the first jmp instruction is located at the 0x200 offset from the start of the kernel real mode, i. e using Boot 0 and Boot 1 Pins in Boot mode from User flash The User "JF0 Oct 08, 2018 · The STM32L4 Discovery kit IoT node used in the STM32 Step-by-Step program. I am attaching two projects, one is called Hello_BOOT, the other is called Hello_110818. Briefly, a bootloader is the first software program that runs when a computer starts. My bootloader works fine without RTOS, but it does’t work … In the case of the STM32 we are using, the ROM bootloader starts at address 0x1FFF0000, so we can jump to it to enter the bootloader - here’s an example. 写代码实现升级策略。. 如何使用STM32NUCLEO 板来测试串口Bootloader 18. 无法使用内置 Bootloader 的 DFU 方式进行固件升级 17. C. Nov 29, 2016 · OpenBLT. Nov 22, 2019 · STM32L4 使用HAL库做IAP功能,bootloader跳转到APP后产生HardFault_Handler() yooh辉: 感谢博主. Basics > Blink from the menu, and a new editor will open. Oct 05, 2021 · Load the first into the Arduino IDE and upload it to the board by plugging in the Swan via USB, then holding the `BOOT` button, and finally pressing the `RESET` button to jump to the bootloader mode. This is because the pushbutton (and the boot pin) is inside an enclosure but we need to be able to do occasional (er, frequent at the STM32Cube¶ Configuration. If it is not valid, the bootloader swaps the banks to remap . Do tego celu jest niezbędny m. 3. yaml przez oskalpowanie z Led'ów i przycisków i zmianę chipu yamla z STM32F4DISCOVERY: . Customizable Bootloader for STM32 microcontrollers. So I want to jump in bootloader directly from software for that I have search the start addresse of system memory of the MCU -> 0x1FFF0000. The aim of this version (compared to the original one in micropython-lib) is to be more compatible with CPython's asyncio module, so that one can more easily write code that runs under both MicroPython and CPython (and reuse CPython asyncio libraries, follow CPython asyncio tutorials, etc). The state of these pins has no effect of the bootloader afterwards. If the button is pressed and released within 4 seconds: the bootloader tries to update the application firmware by performing the following sequence: i ask because of an answer to a similar quastion which can be found here: Jump to Bootloader in STM32 through appliction i. After all, there is no need to remember the names of all… Read More » May 17, 2021 · Debug mode working but Make and Program device mode not working. Dec 17, 2018 · In the case of the 48-pin and 64-pin STM32L4 chips UART2 is the Micromite Console so without any wiring changes it is possible to program the chip with new firmware simply by running STM32CubeProgrammer instead of your usual terminal emulator. Moreover, the trigger UART port can also be used to program the MCU. May 26, 2009 · Here is a bit of a look at how to use the ADC on the STM32 for simple applications. Guide the program to jump to the application program. NOTE: Some IDE’s place the name of the project in the first SREC phrase (S0), this can cause issues with the bootloader whenever the project name exceeds 27 characters. GNU). This can be seen in both the Linux kernel boot Might be not the most elegant solution, because it could be done all in software, but works very reliable (tested on a STM32F4 Discovery board, and on the custom hardware of a client) and you can't forget to reset some timers etc. 系统内存是否不再支持iap跳转来执行其代码(通过usb或 v1. 4 Parser size reduced, new Python stack, stm32 improvements, new esp32 port This release brings some significant size reductions to the parser, as well as removal of unused code and additional tests to improve coverage of the core. STM32L011x和STM32L021x启动模式注意事项 15. #include < avr/io. STM32Cube embedded software libraries, including: The HAL hardware abstraction layer, enabling portability between different STM32 devices via standardized API calls; The Low-Layer (LL) APIs, a light-weight, optimized, expert oriented set of APIs designed for both performance and runtime efficiency Jan 08, 2010 · Detailed Description. Apr 03, 2017 · Example code for jumping to bootloader. It is especially useful for applications requiring large memory or a high degree of I/O expandability at an affordable cost, such as edge inferencing and remote monitoring. No matter how stable your mouse runs in maze, it always comes with the risk to crash during either search run or speed run. i ask because of an answer to a similar quastion which can be found here: Jump to Bootloader in STM32 through appliction i. Hello_BOOT (bare-metal code at address 0x0) is supposed to transfer control / jump I am working on an application on the STM32L4 microcontroller. Table 13: STM32L4 features The STM32L4 series is one of the best-in-class MCU series in the Ultra Low-Power segment. To access that bootloader, a developer needs to pull one of the BOOT pins to ground while the MCU is starting up. С его помощью устройство способно само себя прошить, зачастую без Swan is a low-cost embeddable STM32L4-based microcontroller designed to accelerate the development and deployment of battery-powered solutions. NXP Semiconductors 9 . /** * Function to perform jump to system memory boot from user application * * Call function when you want to jump to system memory */ void JumpToBootloader (void) { void (*SysMemBootJump) (void); /** * Step: Set system memory address. If you're implementing this functionality, the best time to jump into the bootloader is right after boot, when all peripherals are in their reset state. In theory, it would set Atmega32u4 MCUSR’s PORF to 1 when the voltage between 1. I am working on an application on the STM32L4 microcontroller. However, if the mouse successfully search the maze then crashes in the Mar 08, 2021 · STM32 USB编程,跳转到DFU的bootloader STM32 USB programming, jump to bootloader for DFU. These macros are designed to work with all sizes of flash memory. Jun 15, 2016 · Usually, this memory location will contain a jump instruction to another place in memory, which is the start of the user program. 2-rc1) is available here. May 06, 2019 · Bare metal 3. Jan 23, 2018 · Zamysł jest taki: -pierwsze 3x16kb sektory na bootloader. The combination of an ARM Cortex-M4 core with FPU and ultra-low-power features, makes the STM32L4 the best fit for applications demanding high performance while operating on battery or powered by energy harvesting. 有没有人通过软件成功地将 STM32L4 设置为引导加载 i ask because of an answer to a similar quastion which can be found here: Jump to Bootloader in STM32 through appliction i. 0. 4V and 2. bin to the address 0x08009000 and later running my bootloader loader code in debug mode. Select Built-in Examples > 01. Bootloader for STM32, XMC, HCS12 and other microcontroller targets. Indeed, the STM32F429 only has 2MB internal flash for Bootloader, Kernel, Rootfs and DTB. Open the PDF directly: View PDF . The STM32 line of ARM Cortex-M microcontrollers are a fun way to get started with embedded programming. e using Boot 0 and Boot 1 Pins in Boot mode from User flash The User "JF0 Jun 29, 2020 · The main advantage of this bootloader is its size (less than 2KB). e using Boot 0 and Boot 1 Pins in Boot mode from User flash The User "JF0 Apr 18, 2018 · 3、 通过boot引脚设置可以将中断向量表定位于内置Bootloader区,本文不对这种情况做论述; 而Cortex-M3内核规定,起始地址必须存放堆顶指针,而第二个地址则必须存放复位中断入口向量地址,这样在Cortex-M3内核复位后,会自动从起始地址的下一个32位空间取出复位 Stm32 Bootloader is an open source software project. After the transmission of the ACK byte, the bootloader waits for an address (4 bytes, byte 1 is the address MSB and byte 4 is the LSB) and a checksum byte, it then checks the received address. 3) If you need specific (product) support please refer Oct 30, 2015 · Now when I want to jump to bootloader from the application, I just write the predefined word to the end of the memory and request reset. 2 and LC : jump to bootloader. This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. Dec 13, 2011 · Jump to bootloader from RTOS taskPosted by gridsense on December 13, 2011I need update my RTOS firmware via a bootloader during RTOS is running, there is a task to monitor the UART commands, if it is update firmware call, then it will jump to bootloader. See the next section for an explanation of "unfreeze". Nov 13, 2014 · MicroPythonには、DFUモードに入るのに使用されるpyb. ST支持系统Bootloader的单片机型号如下(摘自AN2606,V44,2020. specjalny bootloader, opracowany i udostępniony przez autora tekstu. A new optional, internal Python stack is introduced for scoped allocation and can be used instead of alloca The bootloader checks the bank’s first address, as it must read there the stack pointer at that location. When I run the bootloader and try to download your application code (Option 1) the bootloader seems to get stuck somewhere. Code. e using Boot 0 and Boot 1 Pins in Boot mode from User flash The User "JF0 May 22, 2013 · I would like to try whether jump straight to StartSketch (), for example: poweron-reset occur; For testing, i provide a continue 0 ~ 5V voltage to the Arduino Leonardo by using a power supply. . Sep 22, 2020 · 我使用stm32l073rz(nucleo 64板). The idea is when I press the user button, the bootloader jumps from the main application (0x08000000) to the second one (0x08080000). 3) How MCU boots after power up. I've been following bootloader guide here and trying to write a bootloader that simply turns an LED on when entering a pushbutton-induced performFirmwareUpdate(). Keil 设置. However, if you install a Teensy inside an enclosure where the pushbutton is not easily accessible, you may want a way for your code to jump directly to the bootloader, as if there button were Aug 17, 2020 · When you create a bootloader, you must consider a few things concerning project structure and the actual jump from the bootloader into the application. sloadhost. This is the first code that actually runs (aside from the previous jump instructions, of course). The ADC peripheral on the STM32 processor is a flexible but complex beast. Each example uses the same bootloader library located in the lib/stm32-bootloader folder. Poszukując informacji dotyczących naszego mikrokontrolera odnajdujemy informację, że piny należy podłączyć według wzorca 1 z tabeli 2. This would make for little retooling or redesign just a change of MCU. Posted on March 16, 2017 at 16:09. sloadhost: command line options driven utilities to target microcontroller serial boot load protocols. Nov 16, 2016 · Table 12: STM32L4 features The STM32L4 series is the new best-in-class MCU series in the Ultra Low-Power segment. e using Boot 0 and Boot 1 Pins in Boot mode from User flash The User "JF0 Musimy uruchomić domyślny bootloader. bootloader()関数があります。 それを実装するCコードは、ソースリポジトリにあります。 私はSTM32F4バージョン( #elseブロック)とF7バリアントを数回使用しました(しばらくの間ですが)。 Introduction. Normally when you want to load new code onto your Teensy, you can just press the pushbutton to reboot and run the bootloader. g. AN2606 2/426 AN2606 Rev 51 Table 1. e using Boot 0 and Boot 1 Pins in Boot mode from User flash The User "JF0 Stm32 Bootloader is an open source software project. The bootloader, however, exists in a slightly separate memory space from the user program. S32K1xx Bootloader, Rev. I'm using the ARM GNU toolchain in Ubuntu to compile the code, using srec_cat to merge the . Star 3. 我阅读了勘误表,没有给出任何详细信息,只是根据bfb2位,将双引导机制限制在系统内存中. 我的代码适用于stm32l073微控制器的修订版b,但不适用于最新的修订版z. ページ容量を増やさないために、不具合報告やコメントは、説明記事に記載いただけると助かります。 対象期間: 2020/01/13 ~ 2021/01/12, 総タグ数1: 45,560 総記事数2: 166,944, 総いいね数3: This PR adds a completely new implementation of the uasyncio module. Offline Bjorn van Sabben over 11 years ago. x and V13. The BOOT pins control the mode that the MCU boots up in, such as booting from flash, RAM, or in our preferred case, the DFU USB mode. And they are much more capable than the 8-bit processors used Jumping To The Bootloader. Global interrupts are not automatically disabled for these macros. x as specified in AN2606 “STM32 microcontroller system. x, V10. Our application is to establish serial communication between 2 micro-controllers, one is STM32L4 (HOST MCU – operated at 3V) and other is dsPIC33CK (Slave MCU – operated at 3V). x, V9. Therefore, this APP program is also called BootLoader。 In order to prevent the IAP program from being damaged by the first part of the code, it is generally recommended to "write protect" the IAP program. 在Bootloader中最好的做法是重置SYS TICK Timer,在跳转到应用程序之前禁用所有外设中断。 Another thing you might want to consider is the size of your bootloader. framework = stm32cube. Below, you find a sample code permitting the jump to the bootloader in STM32H7 devices: 1) You can contact the editor of this article by clicking on name provided as “Created By” info. I am dumping my application . I made a bootloader that makes it possible to program the device in application. 准备好升级程序项目,可以使用 STM32CubeMX 来自动生成代码,然后自己编. I also re-linked your application code to your default 0x0018_0000. When I jump to the base address of my firmware, it seems that the interrupts aren't working. Jump to: navigation. Sep 01, 2019 · In addition, Secure Firmware Installation solutions for STM32L4 and STM32H7 MCUs provide protection while devices are being programmed for the first time. The kernel, in turn, initializes the rest of the operating system (e. hex files of my bootloader and application, and flashing them on the board using stlink and When I put BOOT0 to VCC, the Bootloader start and we can change the firmware but my system is on battery and I have no access to BOOT0 pin and RESET. x, V4. The macros in this module provide a C language interface to the bootloader support functionality of certain AVR processors. The example also works with FreeRTOS. The following commands cover the later version. e using Boot 0 and Boot 1 Pins in Boot mode from User flash The User "JF0 Customizable Bootloader for STM32 microcontrollers. Для упрощения процесса перепрошивки используется загрузчик (англ. 编译后下载,因为前面未选择 ResetandRun,下载完成后程序不会运行。. Applicable products Type Part number or product series Microcontrollers STM32F0 Series: STM32F03xxx, STM32F04xxx, STM32F05xxx, STM32F07xxx, STM32F09xxx STM32L4 使用HAL库做IAP功能,bootloader跳转到APP后产生HardFault_Handler(),代码先锋网,一个为软件开发程序员提供代码片段和技术文章聚合的网站。 Sep 28, 2019 · It is a common practice in embedded system these days to use a bootloader-application architecture. For example, you could jump to the bootloader when a button is pressed. Bank 1 at address 0 and jumps into i ask because of an answer to a similar quastion which can be found here: Jump to Bootloader in STM32 through appliction i. This project includes demonstrations for various hardware how to perform in-application-programming of a firmware located on external SD card with FAT32 file system. Maybe it can be called the black pill Plus with maybe a top of the line STM32L4 chip instead. RTC-based scheduler implementation suitable for ultra-low power applications, where recurring tasks are needed to be executed with long periods. This Technical Note aims to serve as a general guideline for creating a bootloader using IAR Embedded Workbench for ARM. First, you can "JUMP" from user-code to the bootloader. 我想跳入应用程序编程(iap)的系统内存中. For the Option byte area, the start address must i ask because of an answer to a similar quastion which can be found here: Jump to Bootloader in STM32 through appliction i. stm32l4 jump to bootloader

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