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152 lines
3.7 KiB
Markdown
152 lines
3.7 KiB
Markdown
### About
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This folder contains files to integrate JerryScript with Zephyr RTOS to
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run on a number of supported boards (like
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[Arduino 101 / Genuino 101](https://www.arduino.cc/en/Main/ArduinoBoard101),
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[Zephyr Arduino 101](https://www.zephyrproject.org/doc/board/arduino_101.html)).
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### How to build
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#### 1. Preface
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1. Directory structure
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Assume `harmony` as the path to the projects to build.
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The folder tree related would look like this.
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```
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harmony
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+ jerryscript
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| + targets
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| + zephyr
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+ zephyr-project
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```
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2. Target boards/emulations
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Following Zephyr boards were tested: qemu_x86, qemu_cortex_m3, arduino_101,
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frdm_k64f.
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#### 2. Prepare Zephyr
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Follow [this](https://www.zephyrproject.org/doc/getting_started/getting_started.html) page to get
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the Zephyr source and configure the environment.
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If you just start with Zephyr, you may want to follow "Building a Sample
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Application" section in the doc above and check that you can flash your
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target board.
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Remember to source the Zephyr environment as explained in the zephyr documenation:
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```
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cd zephyr-project
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source zephyr-env.sh
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export ZEPHYR_GCC_VARIANT=zephyr
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export ZEPHYR_SDK_INSTALL_DIR=<sdk installation directory>
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```
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#### 3. Build JerryScript for Zephyr
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The easiest way is to build and run on a QEMU emulator:
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For x86 architecture:
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```
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make -f ./targets/zephyr/Makefile.zephyr BOARD=qemu_x86 qemu
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```
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For ARM (Cortex-M) architecture:
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```
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make -f ./targets/zephyr/Makefile.zephyr BOARD=qemu_cortex_m3 qemu
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```
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#### 4. Build for Arduino 101
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```
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# assume you are in harmony folder
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cd jerryscript
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make -f ./targets/zephyr/Makefile.zephyr BOARD=arduino_101_factory
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```
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This will generate the following libraries:
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```
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./build/arduino_101_factory/librelease-cp_minimal.jerry-core.a
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./build/arduino_101_factory/librelease-cp_minimal.jerry-libm.lib.a
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./build/arduino_101_factory/librelease.external-cp_minimal-entry.a
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```
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The final Zephyr image will be located here:
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```
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./build/arduino_101_factory/zephyr/zephyr.strip
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```
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#### 5. Flashing
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Details on how to flash the image can be found here:
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[Flashing image](https://www.zephyrproject.org/doc/board/arduino_101.html)
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(or similar page for other supported boards).
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To be able to use this demo in hardware you will need the serial console
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which will be generating output to Pins 0 & 1.
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You will need a 3.3v TTL to RS232, please follow the zephyr documentation on it.
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Some examples of building the software
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```
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make -f ./targets/zephyr/Makefile.zephyr BOARD=<board> clean
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```
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- Not using a Jtag and having a factory stock Arduino 101.
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You can follow the Zephyr instructions to flash using the dfu-util command
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or use this helper:
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```
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make -f ./targets/zephyr/Makefile.zephyr BOARD=arduino_101_factory dfu-x86
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```
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Make sure you have the factory bootloader in your device to use this method or it will not flash.
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- Using JTAG
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There is a helper function to flash using the JTAG and Flywatter2
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```
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make -f ./targets/zephyr/Makefile.zephyr BOARD=arduino_101_factory flash
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```
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<warning> Careful if you flash the BOARD arduino_101, you will lose the bootloader
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and you will have to follow the zephyr documentation to get it back from
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the backup we all know you did at the setup. </warning>
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#### 6. Serial terminal
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Test command line in a serial terminal.
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You should see something similar to this:
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```
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JerryScript build: Aug 12 2016 17:12:55
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JerryScript API 1.0
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Zephyr version 1.4.0
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js>
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```
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Run the example javascript command test function
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```
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js> var test=0; for (t=100; t<1000; t++) test+=t; print ('Hi JS World! '+test);
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Hi JS World! 494550
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```
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Try a more complex function:
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```
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js> function hello(t) {t=t*10;return t}; print("result"+hello(10.5));
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```
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