Sep 5, 2018 · stm32f103 do not have built in DFU, the DFU is provided in the stm32duino bootloader (sketch install at 0x8003000) or the maple bootloader (sketch install at 0x8005000), maple bootloader may be considered 'legacy' but then some board makers still ship the old maple boot loader. September 23, 2016. This is an example application that runs on an STM32F103C8 "bluepill" board using a USB DFU bootloader. 앞 글 STM32F103 DFU Bootloader 만들기에서 만든 bootloader를 Blue Pill 보드에 기록하고 ST-LINK Utility로 읽어보니까 bootloader는 0x0800 2F3C 번지 . The STM32F103 devices have a ROM that can flash a bootloader or application via 3. First, make sure you have followed the procedure of holding down the DFU button while plugging in the device. DfuSe (DFU with ST Microsystems extensions) is a protocol based on DFU 1. Bootloader for STM32, XMC, HCS12 and other microcontroller targets. From my own application i want. Lup Yuen Lee 李立源. Here we will focus on a bootloader which will permit to reflash a. 다운: https://github. AN3156_基于STM32微控制器引导程序的USB_DFU协议应用手册 12 2021-07 AN3156_基于STM32微控制器引导程序的USB_DFU协议应用手册 4 4544. This is an example of how to use it from C#. The web interface permit to flash any binary via DFU from your browser. Blue Pill의 USB 포트로 펌웨어 업데이트가 가능하도록 부트로더를 만들어 Blue Pill의 STM32F103C8T6에 기록해 보겠습니다. Zadig will now install WinUSB for you. Some DfuSe devices have their DfuSe bootloader running from flash memory. Change FLASH (rx) : ORIGIN = 0x08000000, LENGTH = 256K to FLASH (rx) : ORIGIN = 0x08008000, LENGTH = 256K, e. What is DFU DFU is the "Direct Firmware Update" mode for some microcontrollers, most notably the STM32Fx series. 3V serial. Select "Download". The STM32F103 devices have a ROM that can flash a bootloader or application via 3. Enabling the DFU bootloader is super easy. For STM32F2 parts, it. then programming via Arduino with dfu-util 0. A DFU Bootloader. Currently, the only targets officially supported are the STM32F103x series. io/p9873 for $15) on lines PA_9 (USART1_TX) and PA_10 (USART1_RX) (don't forget to connect ground as well). The user code area starts at 0x8000800. Use either nrfutil or a mobile app to perform the DFU: With nrfutil: Connect a Development Kit board to your computer. 文档说明：STM32 的 Bootloader 可以支持多种协议的，比如 USART，I2C，DFU 等等，USART Bootloader 是客户使用 STM32 的时候常常会用到的协议。 客户在使用. com/29 [STM32F4xx] Nucleo 보드 테스트 #20 (DFU - Bootloader 설정 : KEIL). All the STM32 microcontrollers have the capability to boot from: main flash memory, usually where your firmware is located: at the default value address 0x80000000 or a value define in option byte (if possible). What you need to do is: Delete the device and it’s driver from Windows Device Manager Install libusb-based driver using Zadig After that, dfu-util should work. I tried using the. More info into the Datasheet. Then make sure the variant is 64kFlah type, CPU speed is 72MHz and change the upload method. Can someone please give an concise example of what I would need to do next to get, say, the Sparkcore DFU bootloader flashed into my new . On STM32F103, the bootloader consumes only 2 kB of flash memory (0x800). 2M） 104 2016-01-12 文档说明：此问题由某客户提出，应用处理器AP 与MCU 进行I2C 通信，通信会经常发生异常，需要定位原因. First, make sure you have followed the procedure of holding down the DFU button while plugging in the device. Here you need to modify the following: Find your linker file, in my case it’s STM32F103RCTX_FLASH. A DFU Bootloader. I tried using the Maple bootloader modified slightly however it's driver is hopelessly out of whack, and I think the DFU code on it is dated and modified. 1 asked Oct 27, 2017 at 19:10 iMohaned 1,491 5 24 44 Add a comment 4 Answers Sorted by: 18 You only need to put the microcontroller into bootloader mode if you're going to program it over the UART, using the bootloader. Change FLASH_BASE to 0x08008000UL. Feb 25, 2020 · The STM32F103C8T6 USB Bootloader provides such solution, where you can simply plug-in the Blue Pill to your PC via the USB Port and upload the program. 또한, 비상업적인 목적이라하더라도 출처를 밝히지 않고 게시하는 것은 금지합니다. x, V13. DFU全称为Download Firmware Update，是ST官方推出的一个通过USB接. I don't know how DFU-compliant it is, but it works with certain versions of dfu_util. STM32F103 C8T6 IAP -串口在线 升级. The advantage of using HID BL instead of the DFU bootloader is that the entire firmware update process is automatic. Dec 23, 2020 · Target firmware. The default target is a generic STM32F103 dev board with an LED on PC13, commonly referred to as a "bluepill" board. I tried using the Maple bootloader modified slightly however it's driver is hopelessly out of whack, and I think the DFU code on it is dated and modified. then programming via Arduino with dfu-util 0. STM32F103_datasheet Download. 3V serial. Here you need to modify the following: Find your linker file, in my case it’s STM32F103RCTX_FLASH. On STM32F103, the bootloader consumes only 2 kB of flash memory (0x800). The end goal is to provide a DFU-compliant bootloader that is both well written and has configurable entry options to cater to the target. Go to Tools and scroll down to find the Generic STM32F103C series as shown below. It will likely be /dev/ttyUSB0 as shown below. Now visit the dfu-util releases website and. set the start address of the flash. It enables user to flash devices over USB with any arbitrary payloads. Change FLASH (rx) : ORIGIN = 0x08000000, LENGTH = 256K to FLASH (rx) : ORIGIN = 0x08008000, LENGTH = 256K, e. The easiest way to create a virtual com port is using. The STM32F103 devices have a ROM that can flash a bootloader or application via 3. The STM32F4xx MCUs have built-in DFU (Device Firmware Upgrade) but you can also use HID BL for uploading firmwares. This compiles and runs on Linux. Select "Download". The mcu does not have a dfu bootloader. The STM32F103 devices have a ROM that can flash a bootloader or application via 3. This application note describes the USB DFU protocol used in STM32 microcontroller bootloader, detailing each supported command. This is a DFU bootloader for STM32F103 that fits in 8K of flash space, with several activation modes. A USB DFU class device For a WebUSB friendly USB DFU bootloader that can be flashed onto inexpensive STM32F103 boards, check out the dapboot project. From my own application i want to switch the mcu to dfu bootloader mode. I don't know how DFU-compliant it is, but it works with certain versions. Zadig will now install WinUSB for you. Jan 26, 2014 · I designed my own little dev board for the STM32F103VE7, which has an internal serial bootloader, though I wanted to put a proper DFU on it. (F401, F411) the way it works is you need to set boot0, basically pressing that button that the vendor placed as boot0 on the. Currently, the only targets officially supported are the STM32F103x series. First, make sure you have followed the procedure of holding down the DFU button while plugging in the device. Please refer to UM0412, http://www. Dec 23, 2020 · Target firmware. ST provide a DFU module for their STM32 micro-controllers for firmware upgrade over USB. To access this ROM, one should connect the “boot 0” pin to high and “boot 1” pin. Then press the reset button or power cycle while the board is connected. The boot process of this core is: Take the initial value of the MSP from the address 0x0000_0000. x, V9. USART Protocol used in the STM32 bootloader - STMicroelectronics. On STM32F103, the bootloader consumes only 2 kB of flash memory (0x800). I use Ubuntu, so my test program. 17 Dec 2018 · 14. Bootloader DFU stm32f103 MOtto. A bootloader is an small program executed when the microcontroller boots, and contains the basic functionalities. A USB DFU class device For a WebUSB friendly USB DFU bootloader that can be flashed onto inexpensive STM32F103 boards, check out the dapboot project. DFU bootloader for STM32F103?? Posted by MatCat on 26 Jan, 2014 01:53 · I designed my own little dev board for the STM32F103VE7, which has an internal . Lup Yuen Lee 李立源. A bootloader allow reflashing over all kinds of communication bus (UART, CAN, USB, ). Right click, select Uninstall Device, check Delete driver software box, then press Uninstall. 硬汉大神，我看了下教程就是在APP中设置标志位，手动写BootLoader。 实际产品中只有一个电源开关键（长按开关机，短按控制亮灭屏），我想是否可以连续短按 . Bootloader DFU stm32f103 Hi, i like to use the DFU bootloader to update my stm32f103. I tried using the Maple bootloader modified slightly however it's driver is hopelessly out of whack, and I think the DFU code on it is dated and modified. set the start address of the flash. 15,591,566 members. Refer to the part datasheet, or see AN2606 for a comprehensive overview. This mode will boot the program that was been programmed into the microcontroller. The user code area starts at 0x8000800. Application note:USB DFU protocol used in the STM32 bootloader. This microcontroller has the advantage of having more capacity on almost everything compared with an Arduino (ATMega328p), having more SRAM, program memory, ADC and DAC resolution for a little more money. STM32 Development Board or STM32F103C8 Microcontroller can be easily programmed using the Arduino IDE, only after installing the bootloader. Here we will focus on a bootloader which will permit to reflash a. It is typically used to flash a new application (eg, Klipper) to the micro-controller without requiring specialized hardware. If you see a device with a similar name to STM32 Bootloader: \n. For STM32F2 parts, it. More info into the Datasheet. Can someone please give an concise example of what I would need to do next to get, say, the Sparkcore DFU bootloader flashed into my new . Continue execution from the address corresponding to this value. The mcu does not have a dfu bootloader. x, V13. On STM32F103, the bootloader consumes only 2 kB of flash memory (0x800). then programming via Arduino with dfu-util 0. Bootloader DFU stm32f103 Hi, i like to use the DFU bootloader to update my stm32f103. In order to run this demo, you will need: An up-to-date version of Chrome, at least version 61 or newer. Take the value of the PC from the address 0x0000_0004. Note that the best/easiest way to verify you are successfully in bootloader mode (DFU mode) is to hookup a USB-2-UART converter (get one here from Sparkfun: http://sfe. Jun 17, 2021 · 文档说明：某客户使用STM32F103的USB模块做设备时和上位机PC连接时碰到一个问题：PC端驱动已经固定好，是对下位机USB设备上的地址编号为0x0A和0x0B的两个端点通信，从0x0A端点读取数据，向0x0B端点写数据。 而STM32F103的USB模块只有8个双向端点，能否支持这样的寻址。 LAT0064 一个判断I2C总线通信异常原因的方法 （0. As an added benefit, you don't have to fiddle with BOOT pins as you can leave it in the Operating Mode. x and V9. The user code area starts at 0x8000800. The user code area starts at 0x8000800. Aug 13, 2020 · STM32F103 DFU Bootloader로 펌웨어 업데이트하기 이글의 전부 또는 일부, 사진, 소스프로그램 등은 저작자의 동의 없이는 상업적인 사용을 금지합니다. DB3161 STM32WB系列的STM32Cube嵌入式软. Jun 17, 2021 · 文档说明：某客户使用STM32F103的USB模块做设备时和上位机PC连接时碰到一个问题：PC端驱动已经固定好，是对下位机USB设备上的地址编号为0x0A和0x0B的两个端点通信，从0x0A端点读取数据，向0x0B端点写数据。 而STM32F103的USB模块只有8个双向端点，能否支持这样的寻址。 LAT0064 一个判断I2C总线通信异常原因的方法 （0. Some recent STM32 parts have on- . View, compare, and download stm32 bootloader dfu at SourceForge Join/Login; Open Source Software. How to Install the STM32 USB Bootloader, New Version! (Blue Pill F103C8T6) - YouTube 0:00 / 9:36 How to Install the STM32 USB Bootloader, New Version! (Blue Pill F103C8T6) Caleb Marting 4. Simply connect the BOOT0 ( B0) pin to 3. The advantage of using HID BL instead of the DFU bootloader is that the entire firmware update process is automatic. Change FLASH_BASE to 0x08008000UL. On STM32F103, the bootloader consumes only 2 kB of flash memory (0x800). Find out more information: http://bit. Continue execution from the address corresponding to this value. STM32F용 USB DFU 드라이버 설치. STM32F103 DFU bootloader · Features. 오늘은 1/3 : DFU-Bootloader 툴 설정 에 관해서 글을 써 보겠습니다. The STM32F103 devices have a ROM that can flash a bootloader or application via 3. Dec 23, 2020 · If you have installed STM32 driver that works with DFuSe Utility, it won’t work with dfu-util. It includes the DFU driver compatible with the latest Microsoft ® OS. STM32F4xx 중에서 제가 테스트한 MCU는 STM32F411 과 STM32F446 입니다. Continue execution from the address corresponding to this value. Only one target board is currently supported, the STM32F103C8 "bluepill" board. x, V7. I use Ubuntu, so my test program. The STM32F4xx MCUs have built-in DFU (Device Firmware Upgrade) but you can also use HID BL for uploading firmwares. The mcu does not have a dfu bootloader. Note that the best/easiest way to verify you are successfully in bootloader mode (DFU mode) is to hookup a USB-2-UART converter (get one here from Sparkfun: http://sfe. A bootloader is an small program executed when the microcontroller boots, and contains the basic functionalities. 를 보면 BOOT1, BOOT0 핀을 이용하여 Boot mode로 진입하게 된다. The easiest way to create a virtual com port is using the STM32 CubeMX USB CDC. DFU state (10) = dfuERROR, status (10) = Device's firmware is corrupt. Hence, one should check that using the dfu-util -l command. Small size, ideally under 4KB to fit on the first four pages. Once the bootloader and this application have been uploaded, it blinks. 5k ohm pullup on USB D+ and it also has a 8MHz crystal and 32. Aug 8, 2018 · Go to Tools and scroll down to find the Generic STM32F103C series as shown below. This mode will boot the program that was been programmed into the microcontroller. Jan 26, 2014 · I designed my own little dev board for the STM32F103VE7, which has an internal serial bootloader, though I wanted to put a proper DFU on it. Build instructions. 기존의 DFU프로그래머 STSW-STM32080는 더이상 지원을 하지 않아. IIRC, STM32f10x only has a built-in serial bootloader. Can someone please give an concise example of what I would need to do next to get, say, the Sparkcore DFU bootloader flashed into my new . I don't know how DFU-compliant it is, but it works with certain versions of dfu_util. The bootloader is 3rd-party software that runs on the micro-controller when it is first powered on. STM32F용 USB DFU 드라이버 설치. Dec 23, 2020 · Target firmware. Check out stm32duino. Build instructions. Нам необходимы собственно сам CubeMX, загружалка DfuSeDemo+Dfu file manager, лежат в одном пекете, STM32 ST-LINK Utility, все изыскиваем на . STM32F103 DFU Bootloader This is a DFU bootloader for STM32F103 that fits in 8K of flash space, with several activation modes. It features some minimal payload checking to ensure use apps are valid before booting them. Feb 19, 2013 · This code has been tested against a STM32F207's ROM bootloader, a STM32F103 running a FLASH DFU module (as copied from ST's example) in the bottom $3000 bytes to load an application into the FLASH from $08003000 onwards, and another STM32F103 running a slightly different version of ST's DFU example. The STM32 internal bootloader for example, have the functionality of UART programming, but not USB programming. A USB DFU class device For a WebUSB friendly USB DFU bootloader that can be flashed onto inexpensive STM32F103 boards, check out the dapboot project. Those files include the basic functions that we will need to make our examples work. set the start address of the flash. Step 6: - Now, connect your FTDI board to the computer and check to which COM port the FTDI board is connected to using device manager. It is typically used to flash a new application (eg, Klipper) to the micro-controller without requiring specialized hardware. STM32 Bootloader This post is all about installing STM32 Bootloader, i. These modifiers are separated with a colon. STM32 Development Board or STM32F103C8 Microcontroller can be easily programmed using the Arduino IDE, only after installing the bootloader. set the start address of the flash. Jun 17, 2021 · 文档说明：某客户使用STM32F103的USB模块做设备时和上位机PC连接时碰到一个问题：PC端驱动已经固定好，是对下位机USB设备上的地址编号为0x0A和0x0B的两个端点通信，从0x0A端点读取数据，向0x0B端点写数据。 而STM32F103的USB模块只有8个双向端点，能否支持这样的寻址。 LAT0064 一个判断I2C总线通信异常原因的方法 （0. Change FLASH_BASE to 0x08008000UL. Feb 19, 2013 · This code has been tested against a STM32F207's ROM bootloader, a STM32F103 running a FLASH DFU module (as copied from ST's example) in the bottom $3000 bytes to load an application into the FLASH from $08003000 onwards, and another STM32F103 running a slightly different version of ST's DFU example. Primary development MCU is. dfu-util -d 1eaf:0003 -a 2 -R -D out/klipper. More info into the Datasheet. If you are tired from unplugging your device, use this utility. The STM32F4xx MCUs have built-in DFU (Device Firmware Upgrade) but you can also use HID BL for uploading firmwares. I don't like USB DFU bootloader much (the CPU check can't be done) and I prefer USB VCP with the same protocol as through UART. The binary is on the PC. On many STM32 families, the boot address in the internal flash is 0x8000000. Here you need to modify the following: Find your linker file, in my case it’s STM32F103RCTX_FLASH. USB DFU protocol used in the STM32 bootloader Introduction This application note describes the USB DFU protocol used in STM32 microcontroller bootloader, detailing. Can you confirm what the bootloader does not work with your custom board ? What OS are you using and if it's windows did you install the DFU . craigslist rims and tires
As an added benefit, you don’t have to fiddle with BOOT pins as you can leave it in the Operating Mode. . Stm32f103 dfu bootloader
DFU 부트로더 동작의 . Dec 6, 2020 · This time I bring you a guide about STM32F103 (Bootloader and programming). More info into the Datasheet. x, V4. Jun 17, 2021 · 文档说明：STM32 的 Bootloader 可以支持多种协议的，比如 USART，I2C，DFU 等等，USART Bootloader 是客户使用 STM32 的时候常常会用到的协议。客户在使用 STM32F745 进行产品开发的时候，出现了使用 STM32CubeProgramer 无法通过 USART1 Bootloader 进行程序升级的问题。. On STM32F103, the bootloader consumes only 2 kB of flash memory (0x800). It is typically used to flash a new application (eg, Klipper) to the micro-controller without requiring specialized hardware. A bootloader is an small program executed when the microcontroller boots, and contains the basic functionalities. Miễn phí khi đăng ký và chào giá cho công việc. On STM32F103, the bootloader consumes only 2 kB of flash memory (0x800). On STM32F103, the bootloader consumes only 2 kB of flash memory (0x800). Dec 6, 2020 · This time I bring you a guide about STM32F103 (Bootloader and programming). A DFU Bootloader. More info into the Datasheet. A bootloader is an small program executed when the microcontroller boots, and contains the basic functionalities. 어떤 Flash Memory 주소에 Application을 올리지 확인해야한다. Change FLASH_BASE to 0x08008000UL. Currently, the only targets officially supported are the STM32F103x series. [adsense2] Components Required STM32F103C8T6 Blue Pill Board. PlatformIO on VSCode for STM32 (STM32F103 bluepill) with the Arduino Framework cannot upload via USB (DFU bootloader) - Development Platforms -. x, as specified in STM32 microcontroller system memory boot mode (AN2606). Change FLASH_BASE to 0x08008000UL. Change FLASH (rx) : ORIGIN = 0x08000000, LENGTH = 256K to FLASH (rx) : ORIGIN = 0x08008000, LENGTH = 256K, e. It includes the DFU driver compatible with the latest Microsoft ® OS. x, V7. sloadhost sloadhost: command line options driven utilities to target microcontroller serial boot load protocols. zip is the name of the firmware package that you want to upload: nrfutil dfu ble -ic NRF52 -f -pkg package. STM32F103 C8T6 IAP -串口在线 升级. 3V serial. Witam Próbowałem znaleźć na internecie bootloader dla stm32f103 ale nie ma go nawet na stronie st. Build instructions. Device ID 0483:df11 Device DFU version 011a Claiming USB DFU Interface. Dec 6, 2020 · STM32F103 Bootloader Firstly, you have to know what the bootloader is. STM32F103에 USB 기능이있는 걸 이용한 부트로더임. CAN protocol used in the STM32 bootloader Introduction This application note describes the CAN protocol used in the STM32 microcontroller bootloader. Change FLASH_BASE to 0x08008000UL. All STM32 are based on Arm Cortex-M core. Start up Zadig and select “STM32 BOOTLOADER” and click install driver. 15,591,566 members. Here you need to modify the following: Find your linker file, in my case it’s STM32F103RCTX_FLASH. More info into the Datasheet. Нам необходимы собственно сам CubeMX, загружалка DfuSeDemo+Dfu file manager, лежат в одном пекете, STM32 ST-LINK Utility, все изыскиваем на . The STM32F4xx MCUs have built-in DFU (Device Firmware Upgrade) but you can also use HID BL for uploading firmwares. The boot process of this core is: Take the initial value of the MSP from the address 0x0000_0000. STM32F103C8T6 Blue Pill Board USB to Serial Converter (like FTDI Programmer) Connecting Wires. The STM32F4xx MCUs have built-in DFU (Device Firmware Upgrade) but you can also use HID BL for uploading firmwares. Nạp file. Can you confirm what the bootloader does not work with your custom board ? What OS are you using and if it's windows did you install the DFU . This is a DFU bootloader for STM32F103 that fits in 8K of flash space, with several activation modes. In order to run this demo, you will need: An up-to-date version of Chrome, at least version 61 or newer. The user code area starts at 0x8000800. I was experimenting with. 0 2022-08 225 文档说明：本文档提供了基于. DB3161 STM32WB系列的STM32Cube嵌入式软. Please refer to UM0412, http://www. It is typically used to flash a new application (eg, Klipper) to the micro-controller without requiring specialized hardware. The boot process of this core is: Take the initial value of the MSP from the address 0x0000_0000. STM32F103 C8T6 IAP -串口在线 升级 ，实现通过串口在程序中 升级 原程序. ST embedded bootloader located in the system flash memory: a code flashed at production and which can’t be modified in any manner. STM32F103_datasheet Download. x, V10. Feb 19, 2013 · This code has been tested against a STM32F207's ROM bootloader, a STM32F103 running a FLASH DFU module (as copied from ST's example) in the bottom $3000 bytes to load an application into the FLASH from $08003000 onwards, and another STM32F103 running a slightly different version of ST's DFU example. Step 6: - Now, connect your FTDI board to the computer and check to which COM port the FTDI board is connected to using device manager. In this video, you will see how to program the STM32 with USB DFU if its available. It cannot return to run-time (non-DFU) operations Clearing status Determining device status. Aug 8, 2018 · Go to Tools and scroll down to find the Generic STM32F103C series as shown below. Regarding STM32f103 bootloader Ask Question Asked 6 years, 11 months ago Modified 6 years, 11 months ago Viewed 3k times 2 It is given in STM32 system memory boot mode. Start up Zadig and select “STM32 BOOTLOADER” and click install driver. The mcu does not have a dfu bootloader. Typically one would wire the PA10 (MCU Rx) and PA9 (MCU Tx) pins to a 3. A DFU Bootloader. 7K subscribers Subscribe Like Share 59K views 3 years ago This video is all about installing. The mcu does not have a dfu bootloader. 4K subscribers Subscribe 641 169K views 8 years ago Find out more information: http://bit. 1 Associate II Options 2021-05-18 02:05 AM Hi, i like to use the DFU bootloader to update my stm32f103. It includes the DFU driver compatible with the latest Microsoft ® OS. As an added benefit, you don’t have to fiddle with BOOT pins as you can leave it in the Operating Mode. Some recent STM32 parts have on-chip USB DfuSe bootloaders that are supported by this site. This mode will boot the program that was been programmed into the microcontroller. Enter the following command to start the DFU process over BLE, where package. Go to Tools and scroll down to find the Generic STM32F103C series as shown below. Simply connect the BOOT0 ( B0) pin to 3. DFU state (10) = dfuERROR, status (10) = Device's firmware is corrupt. If you want a USB DFU bootloader, you should look at the . This is a tiny bootloader (under 4KB) for STM32F103 (although it probably works for similar devices). The boot process of this core is: Take the initial value of the MSP from the address 0x0000_0000. If you want a USB DFU bootloader, you should look at the . cfg flash Overriding defaults. I have built the project both "x86" and "x64". STM32F103으로 ESP8266을 이용한 소켓 통신하기 - 제5편 이글의 전부 또는 일부 . All STM32 are based on Arm Cortex-M core. $lsusb Bus 250 Device 007: ID f055:0001 f055 STM32F HID Bootloader. The advantage of using HID BL instead of the DFU bootloader is that the entire firmware update process is automatic. On STM32F103, the bootloader consumes only 2 kB of flash memory (0x800). All the STM32 microcontrollers have the capability to boot from: main flash memory, usually where your firmware is located: at the default value address 0x80000000 or a value define in option byte (if possible). The Links that are mentioned in the video are:AN2606 from ST: http://www. First, make sure you have followed the procedure of holding down the DFU button while plugging in the device. 4K subscribers Subscribe 641 169K views 8 years ago Find out more information: http://bit. 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