Roland Takacs
c51b268276
* Removed hardware specific implementations * Added simple 'hello world' demo code to be aligned to other targets * Added ability to use external resources from outside JerryScript folder JerryScript-DCO-1.0-Signed-off-by: Roland Takacs roland.takacs@h-lab.eu
90 lines
2.5 KiB
Markdown
90 lines
2.5 KiB
Markdown
### About
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This folder contains files to run JerryScript on
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[STM32F4-Discovery board](https://www.st.com/en/evaluation-tools/stm32f4discovery.html) with
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[Mbed OS 5](https://os.mbed.com/).
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The document had been validated on Ubuntu 20.04 operating system.
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#### 1. Setup the build environment
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Clone the necessary projects into a `jerry-mbedos` directory.
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The latest tested working version of Mbed is `5.15`.
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```sh
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mkdir jerry-mbedos && cd jerry-mbedos
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git clone https://github.com/jerryscript-project/jerryscript.git
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git clone https://github.com/ARMmbed/mbed-os.git -b mbed-os-5.15
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```
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The following directory structure has been created:
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```
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jerry-mbedos
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+ jerryscript
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| + targets
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| + os
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| + mbedos5
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+ mbed-os
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```
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#### 2. Install dependencies of the projects
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```sh
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# Assuming you are in jerry-mbedos folder.
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jerryscript/tools/apt-get-install-deps.sh
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sudo apt install stlink-tools
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pip install mbed-cli
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# Install Python dependencies of Mbed OS.
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pip install --user -r mbed-os/requirements.txt
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```
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#### 4. Build Mbed OS (with JerryScript)
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```
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# Assuming you are in jerry-mbedos folder.
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make -C jerryscript/targets/os/mbedos5 MBED_OS_DIR=${PWD}/mbed-os
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```
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The created binary is a `mbed-os.bin` named file located in `jerryscript/build/mbed-os` folder.
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#### 5. Flash
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Connect Mini-USB for charging and flashing the device.
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```
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# Assuming you are in jerry-riot folder.
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sudo st-flash write jerryscript/build/mbed-os/mbed-os.bin 0x8000000
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```
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#### 6. Connect to the device
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Use `USB To TTL Serial Converter` for serial communication. STM32F4-Discovery pins are mapped by Mbed OS as follows:
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```
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STM32f4-Discovery PA2 pin is configured for TX.
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STM32f4-Discovery PA3 pin is configured for RX.
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```
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* Connect `STM32f4-Discovery` **PA2** pin to **RX** pin of `USB To TTL Serial Converter`
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* Connect `STM32f4-Discovery` **PA3** pin to **TX** pin of `USB To TTL Serial Converter`
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* Connect `STM32f4-Discovery` **GND** pin to **GND** pin of `USB To TTL Serial Converter`
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The device should be visible as `/dev/ttyUSB0`. Use `minicom` communication program with `115200`.
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* In `minicom`, set `Add Carriage Ret` to `off` in by `CTRL-A -> Z -> U` key combinations.
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* In `minicom`, set `Hardware Flow Control` to `no` by `CTRL-A -> Z -> O -> Serial port setup -> F` key combinations.
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```sh
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sudo minicom --device=/dev/ttyUSB0 --baud=115200
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```
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Press `RESET` on the board to get the output of JerryScript application:
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```
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This test run the following script code: [print ('Hello, World!');]
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Hello, World!
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```
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