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57 lines
2.6 KiB
Markdown
57 lines
2.6 KiB
Markdown
# BTstack port for Zephyr Controller with HCI UART Firmware Connectected To POSIX System
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The main difference to the regular posix-h4 port is that that the Zephyr Contoller uses 1000000 as baud rate.
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In addition, the port defaults to use the fixed static address stored during production.
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## Prepare Zephyr Controller
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Please follow [this](https://devzone.nordicsemi.com/blogs/1059/nrf5x-support-within-the-zephyr-project-rtos/) blog post about how to compile and flash `samples/bluetooth/hci_uart` to a connected nRF5 dev kit.
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In short: you need to install an arm-none-eabi gcc toolchain and the nRF5x Command Line Tools incl. the J-Link drivers, checkout the Zephyr project, and flash an example project onto the chipset:
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* Install [J-Link Software and documentation pack](https://www.segger.com/jlink-software.html).
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* Get nrfjprog as part of the [nRFx-Command-Line-Tools](http://www.nordicsemi.com/eng/Products/Bluetooth-low-energy/nRF52-DK). Click on Downloads tab on the top and look for your OS.
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* [Checkout Zephyr and install toolchain](https://www.zephyrproject.org/doc/getting_started/getting_started.html). We recommend using the [arm-non-eabi gcc binaries](https://launchpad.net/gcc-arm-embedded) instead of compiling it yourself. At least on OS X, this failed for us.
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* In *samples/bluetooth/hci_uart*, compile the firmware for nRF52 Dev Kit
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$ make BOARD=nrf52_pca10040
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* Upload the firmware
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$ make flash
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* For the nRF51 Dev Kit, use `make BOARD=nrf51_pca10028`.
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## Configure serial port
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To set the serial port of your Zephyr Controller, you can either update config.device_name in main.c or
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always start the examples with the correct `-u COMx` option.
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## Toolchain
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The port requires a Unix-like toolchain. We successfully used [mingw-w64](https://mingw-w64.org/doku.php) to compile and run the examples. mingw64-w64 is based on [MinGW](mingw.org), which '...provides a complete Open Source programming tool set which is suitable for the development of native MS-Windows applications, and which do not depend on any 3rd-party C-Runtime DLLs.'
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We've used the Msys2 package available from the [downloads page](https://mingw-w64.org/doku.php/download) on Windows 10, 64-bit and use the MSYS2 MinGW 64-bit start menu item to compile 64-bit binaries.
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In the MSYS2 shell, you can install everything with pacman:
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$ pacman -S git
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$ pacman -S make
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$ pacman -S mingw-w64-x86_64-toolchain
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$ pacman -S python
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$ pacman -S winpty
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## Compile Examples
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$ make
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## Run example
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Just run any of the created binaries, e.g.
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$ ./le_counter
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The packet log will be written to /tmp/hci_dump.pklg
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