101 lines
3.6 KiB
Markdown
101 lines
3.6 KiB
Markdown
This firmware implements the Maxim DS2432 1k-Bit Protected 1-Wire EEPROM with SHA-1 Engine using a development board based around [STM32 F1 series micro-controller](http://www.st.com/web/en/catalog/mmc/FM141/SC1169/SS1031).
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project
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=======
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summary
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-------
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Maxim DS2432 1k-Bit Protected 1-Wire EEPROM with SHA-1 Engine based on the datasheet
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technology
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----------
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This is a example application using the 1-Wire slave library
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Following DS2432 features are not implemented:
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- PF flag
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- Load First Secret function command
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- Compute Next Secret function command
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- Copy Scratchpad function command
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- prevent reading secret memory by returning 0xaa or 0x55
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board
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=====
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The current implementation uses a [core board](https://wiki.cuvoodoo.info/doku.php?id=stm32f1xx#core_board).
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The underlying template also supports following board:
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- [Maple Mini](http://leaflabs.com/docs/hardware/maple-mini.html), based on a STM32F103CBT6
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- [System Board](https://wiki.cuvoodoo.info/doku.php?id=stm32f1xx#system_board), based on a STM32F103C8T6
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- [blue pill](ihttps://wiki.cuvoodoo.info/doku.php?id=stm32f1xx#blue_pill), based on a STM32F103C8T6
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- [core board](https://wiki.cuvoodoo.info/doku.php?id=stm32f1xx#core_board), based on a STM32F103C8T6
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**Which board is used is defined in the Makefile**.
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This is required to map the user LED and button provided on the board
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connections
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===========
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Connect the peripherals the following way (STM32F10X signal; STM32F10X pin; peripheral pin; peripheral signal; comment):
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- *list board to preipheral pin connections*
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All pins are configured using `define`s in the corresponding source code.
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code
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====
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dependencies
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------------
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The source code uses the [libopencm3](http://libopencm3.org/) library.
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The projects is already a git submodules.
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It will be initialized when compiling the firmware.
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Alternatively you can run once: `git submodule init` and `git submodule update`.
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firmware
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--------
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To compile the firmware run `rake`.
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documentation
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-------------
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To generate doxygen documentation run `rake doc`.
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flash
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-----
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There are two firmware images: `bootloader` and `application`.
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The `bootloader` image allows to flash the `application` over USB using the DFU protocol.
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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`).
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The `application` image is the main application and is implemented in `application.c`.
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It is up to the application to advertise USB DFU support (i.e. as does the provided USB CDC ACM example).
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The `bootlaoder` image will be flashed using SWD (Serial Wire Debug).
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For that you need an SWD adapter.
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The `Makefile` uses a Black Magic Probe (per default), or a ST-Link V2 along OpenOCD software.
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To flash the `booltoader` using SWD run `rake flash_booloader`.
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Once the `bootloader` is flashed it is possible to flash the `application` over USB using the DFU protocol by running `rake flash`.
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To force the bootloader to start the DFU mode press the user button or short a pin, depending on the board.
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It is also possible to flash the `application` image using SWD by running `rake flash_application`.
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debug
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-----
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SWD also allows to debug the code running on the micro-controller using GDB.
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To start the debugging session run `rake debug`.
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USB
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---
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The firmware offers serial communication over USART1 and USB (using the CDC ACM device class).
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You can also reset the board by setting the serial width to 5 bits over USB.
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To reset the board run `rake reset`.
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This only works if provided USB CDC ACM is running correctly and the micro-controller isn't stuck.
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