Add support for Mbed-OS 6.15.0 (#4909)

The default Mbed OS device (STM32F4) had been changed to FRDM-K64F that is
supported by both Mbed OS 5 and Mbed OS 6 versions. Makefile had also been
modified to have a flash recipe.

JerryScript-DCO-1.0-Signed-off-by: Roland Takacs [email protected]

Author: rtakacs

.github/workflows/gh-actions.yml

@@ -225,7 +225,7 @@ jobs:
           $RUNNER -q --jerry-tests --build-debug
           --buildoptions=--toolchain=cmake/toolchain_linux_aarch64.cmake,--linker-flag=-static
 
-  MbedOS5_K64F_Build_Test:
+  MbedOS_K64F_Build_Test:
     runs-on: ubuntu-18.04 # needed due to ppa:team-gcc-arm-embedded/ppa
     steps:
       - uses: actions/checkout@v2
@@ -235,8 +235,8 @@ jobs:
       - run: sudo add-apt-repository ppa:team-gcc-arm-embedded/ppa
       - run: sudo apt update
       - run: sudo apt install gcc-arm-embedded python3-setuptools mercurial
-      - run: make -f ./targets/os/mbedos5/Makefile.travis install
-      - run: make -f ./targets/os/mbedos5/Makefile.travis script
+      - run: make -f ./targets/os/mbedos/Makefile.travis install
+      - run: make -f ./targets/os/mbedos/Makefile.travis script
 
   Zephyr_STM32F4_Build_Test:
     runs-on: ubuntu-latest

targets/os/mbedos5/.gitignore renamed to targets/os/mbedos/.gitignore

@@ -12,8 +12,8 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-# default board: STM32F4-Discovery
-BOARD ?= DISCO_F407VG
+# default board: FRDM-K64F
+BOARD ?= K64F
 
 # defult toolchain
 TOOLCHAIN ?= GCC_ARM
@@ -30,28 +30,44 @@ BUILD_DIR ?= $(JERRY_ROOT_DIR)/build/mbed-os
 # default jerry heap size (in KB)
 JERRY_HEAP_SIZE ?= 70
 
+define MBED_CLI_FLAGS
+	--clean
+	--build $(BUILD_DIR)
+	--source $(MBED_OS_DIR)
+	--source $(JERRY_ROOT_DIR)
+	--source $(JERRY_TARGET_DIR)
+	--toolchain $(TOOLCHAIN)
+	--target $(BOARD)
+	--artifact-name mbedos
+	--macro JERRY_GLOBAL_HEAP_SIZE=$(JERRY_HEAP_SIZE)
+endef
+
 .PHONY: all
-all: .mbedignore-copy .mbed-build .mbedignore-remove
+all: .build
 
 .PHONY: clean
-clean:
+clean: .mbedignore-remove
 	rm -rf $(JERRY_ROOT_DIR)/build/mbed-os
 
+.PHONY: flash
+flash: .mbed-set-flash-flag .build
+
+.PHONY: .mbed-set-flash-flag
+.mbed-set-flash-flag:
+	$(eval MBED_CLI_FLAGS += --flash)
+
+.PHONY: .build
+.build: .mbedignore-copy .mbed-build .mbedignore-remove
+
 .PHONY: .mbed-build
 .mbed-build:
 	mbed config -G MBED_OS_DIR $(MBED_OS_DIR)
-	mbed compile \
-		--clean \
-		--build $(BUILD_DIR) \
-		--source $(MBED_OS_DIR) \
-		--source $(JERRY_ROOT_DIR) \
-		--source $(JERRY_TARGET_DIR) \
-		--toolchain $(TOOLCHAIN) \
-		--target $(BOARD) \
-		--macro JERRY_GLOBAL_HEAP_SIZE=$(JERRY_HEAP_SIZE)
+	mbed compile $(strip $(MBED_CLI_FLAGS))
 
+.PHONY: .mbedignore-copy
 .mbedignore-copy:
-	cp .mbedignore $(JERRY_ROOT_DIR)
+	cp mbedignore.txt $(JERRY_ROOT_DIR)/.mbedignore
 
+.PHONY: .mbedignore-remove
 .mbedignore-remove:
-	rm $(JERRY_ROOT_DIR)/.mbedignore
+	rm -f $(JERRY_ROOT_DIR)/.mbedignore

targets/os/mbedos5/Makefile renamed to targets/os/mbedos/Makefile

@@ -19,10 +19,10 @@ all:
 	$(MAKE) script
 
 
-## Targets for installing build dependencies of the Mbed OS 5 JerryScript target.
+## Targets for installing build dependencies of the Mbed OS JerryScript target.
 
 install-mbedos:
-	git clone https://github.com/ARMmbed/mbed-os.git ../mbed-os -b mbed-os-5.15
+	git clone https://github.com/ARMmbed/mbed-os.git ../mbed-os -b mbed-os-6.15.0
 
 # Deploy Mbed and install Mbed Python dependencies.
 install-mbedos-deps:
@@ -31,8 +31,8 @@ install-mbedos-deps:
 
 install: install-mbedos install-mbedos-deps
 
-## Targets for building Mbed OS 5 with JerryScript.
+## Targets for building Mbed OS with JerryScript.
 
-# Build the firmware (Mbed OS 5 with JerryScript).
+# Build the firmware (Mbed OS with JerryScript).
 script:
-	$(MAKE) -C targets/os/mbedos5 BOARD=K64F MBED_OS_DIR=$(realpath ../mbed-os)
+	$(MAKE) -C targets/os/mbedos MBED_OS_DIR=$(realpath ../mbed-os)

targets/os/mbedos5/Makefile.travis renamed to targets/os/mbedos/Makefile.travis

@@ -0,0 +1,77 @@
+### About
+
+This folder contains files to run JerryScript on
+[FRDM-K64F board](https://os.mbed.com/platforms/frdm-k64f/) with
+[Mbed OS](https://os.mbed.com/).
+The document had been validated on Ubuntu 20.04 operating system.
+
+#### 1. Setup the build environment
+
+Clone the necessary projects into a `jerry-mbedos` directory.
+The latest tested working version of Mbed is `mbed-os-6.15.0`.
+
+```sh
+mkdir jerry-mbedos && cd jerry-mbedos
+
+git clone https://github.com/jerryscript-project/jerryscript.git
+git clone https://github.com/ARMmbed/mbed-os.git -b mbed-os-6.15.0
+```
+
+The following directory structure has been created:
+
+```
+jerry-mbedos
+  + jerryscript
+  |  + targets
+  |      + os
+  |        + mbedos
+  + mbed-os
+```
+
+#### 2. Install dependencies of the projects
+
+```sh
+# Assuming you are in jerry-mbedos folder.
+jerryscript/tools/apt-get-install-deps.sh
+
+sudo apt install stlink-tools
+pip install --user mbed-cli
+# Install Python dependencies of Mbed OS.
+pip install --user -r mbed-os/requirements.txt
+```
+
+#### 3. Build Mbed OS (with JerryScript)
+
+```
+# Assuming you are in jerry-mbedos folder.
+make -C jerryscript/targets/os/mbedos MBED_OS_DIR=${PWD}/mbed-os
+```
+
+The created binary is a `mbedos.bin` named file located in `jerryscript/build/mbed-os` folder.
+
+#### 4. Flash
+
+Connect Micro-USB for charging and flashing the device.
+
+```
+# Assuming you are in jerry-mbedos folder.
+make -C jerryscript/targets/os/mbedos MBED_OS_DIR=${PWD}/mbed-os flash
+```
+
+#### 5. Connect to the device
+
+The device should be visible as `/dev/ttyACM0` on the host.
+You can use `minicom` communication program with `115200` baud rate.
+
+```sh
+sudo minicom --device=/dev/ttyACM0 --baud=115200
+```
+
+Set `Add Carriage Ret` option in `minicom` by `CTRL-A -> Z -> U` key combinations.
+Press `RESET` on the board to get the output of JerryScript application:
+
+```
+This test run the following script code: [print ('Hello, World!');]
+
+Hello, World!
+```

targets/os/mbedos/README.md

@@ -26,12 +26,16 @@
 #define JERRY_STANDALONE_EXIT_CODE_OK   (0)
 #define JERRY_STANDALONE_EXIT_CODE_FAIL (1)
 
-int
-main ()
-{
-  Serial device (USBTX, USBRX); // tx, rx
-  device.baud (115200);
+#if MBED_MAJOR_VERSION == 5
+static Serial serial(USBTX, USBRX, 115200);
+#elif MBED_MAJOR_VERSION == 6
+static BufferedSerial serial(USBTX, USBRX, 115200);
+#else
+#error Unsupported Mbed OS version.
+#endif
 
+int main()
+{
   /* Initialize engine */
   jerry_init (JERRY_INIT_EMPTY);