Small, fast and simple STM32F4xx UART bootloader. With very small footprint but without assembler code.
подробное описание на русском: https://habrahabr.ru/post/305800/
- Target MCU: STM32F405 / STM32F407
- clocks: 147.5 MHz (for minimal BOD error)
- uart: 921600 BOD, 8bit, noParity, recive from IRQ to fifo buffer, direct send
- Protocol: Packets with H/W CRC32 and acknowledgment, lost and corrupt data protection
- Can work from locked flash
- Firmware update ONLY
- fast write speed 400kb firmware in 9 seconds
- partital erase and full erase
- timeout for start main 5 seconds
Project finished
| text | data | bss | filename |
|---|---|---|---|
| 3390 | 304 | 123692 | Boot_F4_fast_uart.elf |
| Total Flash image is 3.7k - less than first flash page in STM32 (4k ... 16k) |