protocol.txt

The communication protocol used by ST bootloader is documented in following ST
application notes, depending on communication port.

In current version of stm32flash are supported only UART and I2C ports.

* AN3154: CAN protocol used in the STM32 bootloader
  http://www.st.com/web/en/resource/technical/document/application_note/CD00264321.pdf

* AN3155: USART protocol used in the STM32(TM) bootloader
  http://www.st.com/web/en/resource/technical/document/application_note/CD00264342.pdf

* AN4221: I2C protocol used in the STM32 bootloader
  http://www.st.com/web/en/resource/technical/document/application_note/DM00072315.pdf

* AN4286: SPI protocol used in the STM32 bootloader
  http://www.st.com/web/en/resource/technical/document/application_note/DM00081379.pdf

Boot mode selection for STM32 is documented in ST application note AN2606, available in ST website:
  http://www.st.com/web/en/resource/technical/document/application_note/CD00167594.pdf