WAMR in Zephyr

CMakeLists.txt

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+# Copyright (C) 2019 Intel Corporation.  All rights reserved.
+# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+
+cmake_minimum_required(VERSION 3.8.2)
+
+#set(CMAKE_C_COMPILER "/home/dafran/gcc-arm-none-eabi-9-2020-q2-update/bin/arm-none-eabi-gcc")
+#set(CMAKE_CXX_COMPILER "/home/dafran/gcc-arm-none-eabi-9-2020-q2-update/bin/arm-none-eabi-g++")
+#find_package(Zephyr REQUIRED HINTS $ENV{ZEPHYR_BASE})
+include($ENV{ZEPHYR_BASE}/cmake/app/boilerplate.cmake NO_POLICY_SCOPE)
+project(NONE)
+
+enable_language (ASM)
+
+set (WAMR_BUILD_PLATFORM "zephyr")
+
+# Build as X86_32 by default, change to "AARCH64[sub]", "ARM[sub]", "THUMB[sub]", "MIPS" or "XTENSA"
+# if we want to support arm, thumb, mips or xtensa
+if (NOT DEFINED WAMR_BUILD_TARGET)
+  set (WAMR_BUILD_TARGET "X86_32")
+endif ()
+
+if (NOT DEFINED WAMR_BUILD_INTERP)
+  # Enable Interpreter by default
+  set (WAMR_BUILD_INTERP 1)
+endif ()
+
+if (NOT DEFINED WAMR_BUILD_AOT)
+  # Enable AOT by default.
+  set (WAMR_BUILD_AOT 1)
+endif ()
+
+if (NOT DEFINED WAMR_BUILD_LIBC_BUILTIN)
+  # Enable libc builtin support by default
+  set (WAMR_BUILD_LIBC_BUILTIN 1)
+endif ()
+
+if (NOT DEFINED WAMR_BUILD_LIBC_WASI)
+  # Disable libc wasi support by default
+  set (WAMR_BUILD_LIBC_WASI 0)
+endif ()
+
+set (WAMR_ROOT_DIR ${CMAKE_CURRENT_SOURCE_DIR}/wamr)
+
+include (${WAMR_ROOT_DIR}/build-scripts/runtime_lib.cmake)
+
+#add_executable (app src/main.c src/native_impl.c ${UNCOMMON_SHARED_SOURCE})
+FILE(GLOB app_sources src/*.c)
+target_sources(app PRIVATE
+               ${WAMR_RUNTIME_LIB_SOURCE}
+               ${app_sources})
+target_include_directories(app PRIVATE ${ZEPHYR_BASE}/subsys/net/ip)
+

Kconfig

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+# Copyright (c) 2020, Nordic Semiconductor ASA
+# SPDX-License-Identifier: Apache-2.0
+
+config LOG
+	default y
+
+config LOG_PRINTK
+	default y
+
+config SENSOR_LOG_LEVEL
+	default 4
+
+# Workaround for not being able to have commas in macro arguments
+DT_COMPAT_BOSCH_BME280 := bosch,bme280
+
+# Enable SPI support by default if there are any BME280 sensors
+# on a SPI bus.
+config SPI
+	default $(dt_compat_on_bus,$(DT_COMPAT_BOSCH_BME280),spi)
+
+# Enable I2C support by default if there are any BME280 sensors
+# on an I2C bus.
+config I2C
+	default $(dt_compat_on_bus,$(DT_COMPAT_BOSCH_BME280),i2c)
+
+source "Kconfig.zephyr"

README.rst

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+.. _bme280:
+
+BME280 Humidity and Pressure Sensor
+###################################
+
+Overview
+********
+
+This sample application periodically reads temperature, pressure and humidity data from
+the first available device that implements SENSOR_CHAN_AMBIENT_TEMP, SENSOR_CHAN_PRESS,
+and SENSOR_CHAN_HUMIDITY. This sample checks the sensor in polling mode (without
+interrupt trigger).
+
+Building and Running
+********************
+
+This sample application uses an BME280 sensor connected to a board via I2C.
+Connect the sensor pins according to the connection diagram given in the `bme280 datasheet`_
+at page 38.
+
+
+.. zephyr-app-commands::
+   :zephyr-app: samples/sensor/bme280
+   :board: nrf52840dk_nrf52840
+   :goals: flash
+   :compact:
+
+Sample Output
+=============
+To check output of this sample , any serial console program can be used.
+This example uses ``picocom`` on the serial port ``/dev/ttyACM0``:
+
+.. code-block:: console
+
+        $ sudo picocom -D /dev/ttyUSB0
+
+.. code-block:: console
+
+        temp: 27.950000; press: 100.571027; humidity: 61.014648
+        temp: 27.940000; press: 100.570269; humidity: 61.012695
+        temp: 27.950000; press: 100.570695; humidity: 61.002929
+
+.. _bme280 datasheet: https://ae-bst.resource.bosch.com/media/_tech/media/datasheets/BST-BME280-DS002.pdf

boards/nrf52840dk_nrf52840.overlay

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+/*
+ * Copyright (c) 2020, Nordic Semiconductor ASA
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+&i2c0 {
+	bme280@76 {
+		compatible = "bosch,bme280";
+		reg = <0x76>;
+		label = "BME280";
+	};
+};

build_and_run.sh

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+#!/bin/bash
+
+# Copyright (C) 2019 Intel Corporation.  All rights reserved.
+# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+
+X86_TARGET="x86"
+STM32_TARGET="stm32"
+QEMU_CORTEX_A53="qemu_cortex_a53"
+XTENSA_QEMU_TARGET="xtensa-qemu"
+ESP32_TARGET="esp32"
+NRF52840_DK="nrf52840dk_nrf52840"
+
+usage ()
+{
+        echo "USAGE:"
+        echo "$0 $X86_TARGET|$STM32_TARGET|$QEMU_CORTEX_A53|$XTENSA_QEMU_TARGET|$ESP32_TARGET|$NRF52840_DK"
+        echo "Example:"
+        echo "        $0 $X86_TARGET"
+        echo "        $0 $STM32_TARGET"
+        echo "        $0 $QEMU_CORTEX_A53"
+        echo "        $0 $XTENSA_QEMU_TARGET"
+        echo "        $0 $ESP32_TARGET"
+	echo "        $0 $NRF52840_DK"
+        exit 1
+}
+
+if [ $# != 1 ] ; then
+        usage
+fi
+
+TARGET=$1
+
+case $TARGET in
+        $X86_TARGET)
+                west build -b qemu_x86_nommu \
+                           . -p always -- \
+                           -DCONF_FILE=prj_qemu_x86_nommu.conf \
+                           -DWAMR_BUILD_TARGET=X86_32
+                west build -t run
+                ;;
+        $STM32_TARGET)
+                west build -b nucleo_f767zi \
+                           . -p always -- \
+                           -DCONF_FILE=prj_nucleo767zi.conf \
+                           -DWAMR_BUILD_TARGET=THUMBV7
+                west flash
+                ;;
+        $XTENSA_QEMU_TARGET)
+                west build -b qemu_xtensa \
+                           . -p always -- \
+                           -DCONF_FILE=prj_qemu_xtensa.conf \
+                           -DWAMR_BUILD_TARGET=XTENSA
+                west build -t run
+                ;;
+        $ESP32_TARGET)
+                # suppose you have set environment variable ESP_IDF_PATH
+                west build -b esp32 \
+                           . -p always -- \
+                           -DESP_IDF_PATH=$ESP_IDF_PATH \
+                           -DCONF_FILE=prj_esp32.conf \
+                           -DWAMR_BUILD_TARGET=XTENSA
+                # suppose the serial port is /dev/ttyUSB1 and you should change to
+                # the real name accordingly
+                west flash --esp-device /dev/ttyUSB1
+                ;;
+        $QEMU_CORTEX_A53)
+                west build -b qemu_cortex_a53 \
+                           . -p always -- \
+                           -DCONF_FILE=prj_qemu_cortex_a53.conf \
+                           -DWAMR_BUILD_TARGET=AARCH64
+                west build -t run
+                ;;
+	$NRF52840_DK)
+                west build -b nrf52840dk_nrf52840 \
+                           . -p always -- \
+                           -DCONF_FILE=prf_nrf52840_dk.conf \
+                           -DWAMR_BUILD_TARGET=ARM 
+                west build -t run
+                ;;
+        *)
+                echo "unsupported target: $TARGET"
+                usage
+                exit 1
+                ;;
+esac
+