What is UART bootloader?

A bootloader enables field updates of application firmware. A Universal Asynchronous Receiver/Transmitter. (UART) bootloader enables firmware updates over the UART. The UART bootloader described in this application. note is based on the Silicon Labs Modular Bootloader Framework.

Does STM32 have bootloader?

The bootloader is stored in the internal boot ROM (system memory) of STM32 devices, and is programmed by ST during production. Its main task is to download the application program to the internal Flash memory through one of the available serial peripherals (such as USART, CAN, USB, I2C, SPI).

How do I program my sm32 through UART?


  1. Insert you USB to UART converter to computer.
  2. Download Flash Loader Demonstrator from ST’s official site.
  3. Install loader.
  4. Open loader.
  5. Before we can continue with loader program, we have to prepare hardware for UART bootloader.
  6. We need to connect our USB to UART converter with STM32F4 device.

What is serial bootloader?

The serial bootloader is a stand-alone package consisting of two parts: embedded bootloader that should be loaded to the flash memory of a supported MCU and the PC based application that sends data to the embedded bootloader over serial link.

What does a Bootloader do?

A boot loader is a critical piece of software running on any system. Whenever a computing system is initially powered on, the first piece of code to be loaded and run is the boot loader. It provides an interface for the user to load an operating system and applications.

How does MCU bootloader work?

A Bootloader is a program that allows you to load other programs via a more convenient interface like a standard USB cable. When you power-up or reset your microcontroller board, the bootloader checks to see if there is an upload request. If there is, it will upload the new program and burn it into Flash memory.

What is bootloader in embedded systems?

Bootloader is the first piece of firmware which gets executed once the Embedded System is turned-on/reset. The primary objective of the Bootloader is to initialise the Embedded System and provide control to the Application/RTOS. The other objective of the Bootloader is also to support the data loading feature.

What is AVR bootloader?

The AVR Bootloader allows the programming or re-programming of the target AVR microcontroller using the PC serial port instead of a traditional programmer. Once the AVR Bootloader is programmed into the microcontroller, it remains until the chip is erased.