SaeHie Park
86 lines
2.1 KiB
Markdown
86 lines
2.1 KiB
Markdown
### About
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This folder contains files to run JerryScript in mbed / FRDM-K64F board.
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#### Installing yotta
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You need to install yotta before proceeding.
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Please visit http://yottadocs.mbed.com/#installing-on-linux
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##### Cross-compiler for FRDM-K64F
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If you don't have any GCC compiler installed, please visit [this]
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(https://launchpad.net/gcc-arm-embedded/+download) page to download GCC 4.8.4
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which was tested for building JerryScript for K64F.
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#### How to build JerryScript
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```
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make -f targets/mbedk64f/Makefile.mbedk64f clean
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make -f targets/mbedk64f/Makefile.mbedk64f jerry
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```
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#### JerryScript output files
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Two files will be generated at `targets/mbedk64f/libjerry`
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* libjerrycore.a
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* libfdlibm.a
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#### Building mbed binary
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```
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make -f targets/mbedk64f/Makefile.mbedk64f js2c yotta
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```
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Or, cd to `targets/mbedk64f` where `Makefile.mbedk64f` exist
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```
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cd targets/mbedk64f
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yotta target frdm-k64f-gcc
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yotta build
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```
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#### Build at once
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Omit target name to build both jerry library and mbed binary.
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```
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make -f targets/mbedk64f/Makefile.mbedk64f
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```
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#### Flashing to k64f
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```
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make -f targets/mbedk64f/Makefile.mbedk64f flash
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```
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It assumes default mound folder is `/media/(user)/MBED`
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If its mounted to other path, give it with `TARGET_DIR` variable, for example,
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```
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TARGET_DIR=/mnt/media/MBED make -f targets/mbedk64f/Makefile.mbedk64f flash
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```
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Or you can just copy `targets/mbedk64f/build/frdm-k64f-gcc/source/jerry.bin`
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file to mounted folder.
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When LED near the USB port flashing stops and `MBED` folder shows up on the
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desktop(if you are using GUI), press RESET button on the board to execute
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JerryScript led flashing sample program in js folder.
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#### How blink sample program works
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All `.js` files in `js` folder are executed, with `main.js` in first order.
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`sysloop()` function in main.js is called periodically in every 100msec by
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below code in `main.cpp` `jerry_loop()`, which calls `js_loop()` in
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`jerry_mbedk64f.cpp`
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```
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minar::Scheduler::postCallback(jerry_loop)
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.period(minar::milliseconds(100))
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```
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`sysloop()` then calls `blink()` in `blink.js` which blinks the `LED` in
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every second.
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