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add bootloader information

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King Kévin 2017-04-15 13:58:39 +02:00
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README.md
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@ -1,4 +1,4 @@
this firmware template is designed for development boards based around [STM32 F1 series micro-controller](http://www.st.com/web/en/catalog/mmc/FM141/SC1169/SS1031).
This firmware template is designed for development boards based around [STM32 F1 series micro-controller](http://www.st.com/web/en/catalog/mmc/FM141/SC1169/SS1031).
project
=======
@ -26,10 +26,7 @@ The underlying template also supports following board:
- [core board](https://wiki.cuvoodoo.info/doku.php?id=stm32f1xx#core_board), based on a STM32F103C8T6
**Which board is used is defined in the Makefile**.
This is required:
- for the linker script to know the memory layout (flash and RAM)
- map the user LED and button provided on the board
This is required to map the user LED and button provided on the board
connections
===========
@ -63,10 +60,20 @@ To generate doxygen documentation run `make doc`.
flash
-----
The firmware will be flashed using SWD (Serial Wire Debug).
There are two firmware images: `bootloader` and `application`.
The `bootloader` image allows to flash the `application` over USB using the DFU protocol.
The `bootloader` is started first and immediately jumps to the `application` if it is valid and the DFU mode is not forced (i.e. by pressing the user button on the board or requesting a DFU detach in the `application`).
The main application should be implemented in `application.c`.
It is up to the application to advertise USB DFU support (i.e. as does the provided USB CDC ACM example).
The `bootlaoder` image will be flashed using SWD (Serial Wire Debug).
For that you need an SWD adapter.
The `Makefile` uses a Black Magic Probe (per default), or a ST-Link V2 along OpenOCD software.
To flash using SWD run `make flash`.
To flash the `booltoader` using SWD run `make flash_booloader`.
Once the `bootloader` flashed it is possible to flash the `application` over USB using the DFU protocol by running `make flash`.
To force the bootloader to start the DFU mode press the user button or short a pin, depending on the board.
It is also possible to flash the `application` using SWD by running `make flash_application`.
debug
-----
@ -81,4 +88,4 @@ The firmware offers serial communication over USART1 and USB (using the CDC ACM
You can also reset the board by setting the serial width to 5 bits over USB.
To reset the board run `make reset`.
This only works if the USB CDC ACM is running correctly and the micro-controller isn't stuck.
This only works if provided USB CDC ACM is running correctly and the micro-controller isn't stuck.