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All STM32 microcontrollers have a ROM'ed bootloader that supports loading a binary image into its flash memory using one or more peripherals (varies by STM32 family). Since all STM32 bootloaders support loading from the USART peripheral and most boards connect the USART to RS-232 or a USB -to- UART adapter IC, thus it's a universal method to ...
The USART's synchronous capabilities were primarily intended to support synchronous protocols like IBM's synchronous transmit-receive (STR), binary synchronous communications (BSC), synchronous data link control (SDLC), and the ISO-standard high-level data link control (HDLC) synchronous link-layer protocols, which were used with synchronous voice-frequency modems.
The Android Bootloader (Aboot or ABL), which implements the fastboot interface. Android Bootloader verifies the authenticity of the boot and recovery partitions. [4] By pressing a specific key combination, devices can also boot in recovery mode. Android Bootloader then transfers control to the Linux kernel.
Universal synchronous and asynchronous receiver-transmitter (USART). 2000 kbit/s. Async, Bisync, SDLC, HDLC, X.25. CRC. 4-byte RX buffer. 2-byte TX buffer. Provides signals needed by a third party DMA controller to perform DMA transfers. [12] Z8530/Z85C30: This USART has a 3-byte receive buffer and a 1-byte transmit buffer.
When a system on a chip (SoC) enters suspend to RAM mode, in many cases, the processor is completely off while the RAM is put in self refresh mode. At resume, the boot ROM is executed again and many boot ROMs are able to detect that the SoC was in suspend to RAM and can resume by jumping directly to the kernel which then takes care of powering on again the peripherals which were off and ...
In embedded systems, a board support package (BSP) is the layer of software containing hardware-specific boot firmware, runtime firmware and device drivers and other routines that allow a given embedded operating system, for example a real-time operating system (RTOS), to function in a given hardware environment (a motherboard), integrated with the embedded operating system.
Fastboot is a communication protocol used primarily with Android devices. [1] It is implemented in a command-line interface tool of the same name and as a mode of the bootloader of Android devices. The tool is included with the Android SDK package and used primarily to modify the flash filesystem via a USB connection from a host
Note: The column MBR (Master Boot Record) refers to whether or not the boot loader can be stored in the first sector of a mass storage device. The column VBR (Volume Boot Record) refers to the ability of the boot loader to be stored in the first sector of any partition on a mass storage device.