Plug in the USB Type C cable to the CN7 daughter board that is connected to the STM32G0 mother board. The ST Open Bootloader starts in the detection stage checking the various communication peripheral interfaces for activity looking for a host connection. Reset the board and the ST Open Bootloader will start executing. Build the project, enter debug mode and run the codeĮnter Debug session: this programs the code into the flash and then starts the debug sessionĮxit the Debug Session by terminating it.īoot mode is already set to execute from Flash by default.The project will then appear in the Project Explorer like this: STM32Cube_FW_G0_V1.5.0\Projects\STM32G0C1E-EV\Applications\OpenBootloader\STM32CubeIDE Within Windows File Explorer, double click on the STM32CubeIDE project filename, ".project" for ST Open Bootloader located in the STM32CubeG0 Library that was downloaded and unzipped at this location: STM32CubeG0 - STM32Cube MCU Package for STM32G0 series (HAL, Low-Layer APIs and CMSIS, USB PD, File system, RTOS - and examples running on ST boards) - STMicroelectronics Download and unzip latest STM32G0CubeG0 Firmware Library:.The ST Open Bootloader supports a variety of peripheral interfaces (UART, I2C, SPI, CAN, USB DFU) as does the STM32G0 System Memory Bootloader. Project examples are provided for the STM32CubeIDE, IAR EWARM and Keil uVision toolchains, while STM32CubeIDE is used in this article. STM32Cube_FW_G0_Vx.x.x\Projects\STM32G0C1E-EV\Applications\OpenBootloader This example uses the STM32G0C1 eval board and the Open Bootloader can be found here: Getting Started The ST Open Bootloader is part of the STM32Cube Library package. Type-C USB cable: to connect to the USB peripheral of the STM32G0 on-boardģ.Micro USB cable: to power and program the board.This article shows where to find the ST Open Bootloader within the STM32Cube library package and steps through an example of programming it into an STM32 and using it with the STM32CubeProgrammer. using the write protection feature). Open Bootloader is executed in a non-secure domain from user Flash or SRAM at the initial base address using the following resources: Open Bootloader communicates via an interface link with the Host (STM32CubeProgrammer or another host) to download firmware to the device for writing into the targeted user memory. Open Bootloader relies on STM32Cube HAL/LL drivers for hardware system initialization and configuration of the clocks and the communication interfaces. Open Bootloader code can be loaded into user Flash or SRAM taking the necessary precautions to avoid erasing or corruption (i.e. It allows for downloading the application program to the internal user memory (Flash, SRAM, OTP) without the need for a debugger using one of the available communication interfaces (USART, I2C, SPI, USB-DFU or FDCAN). It is fully compatible with the STM32 System Bootloader and supports the same communication interfaces and commands and can also be used with the STM32CubeProgrammer. Open Bootloader is provided as example code that can be used to build a customized bootloader. ST Open Bootloader is example application code for STM32 microcontrollers providing In-Application programming (IAP) and is offered in the STM32Cube MCU Packages and GitHub. How to use the ST Open Bootloader for STM32 Microcontrollers 1.
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