examples: vf6xx_colibri_m4: rpmsg: Add pingpong and string echo rpmsg examples

Add pingpong and string echo rpmsg examples for Vybrid.

Signed-off-by: Sanchayan Maity <maitysanchayan@gmail.com>
Signed-off-by: Stefan Agner <stefan.agner@toradex.com>

20 files changed, 769 insertions, 0 deletions

diff --git a/examples/vf6xx_colibri_m4/demo_apps/rpmsg/pingpong/armgcc/CMakeLists.txt b/examples/vf6xx_colibri_m4/demo_apps/rpmsg/pingpong/armgcc/CMakeLists.txt
new file mode 100644
index 0000000..117a194
--- /dev/null
+++ b/examples/vf6xx_colibri_m4/demo_apps/rpmsg/pingpong/armgcc/CMakeLists.txt
@@ -0,0 +1,178 @@
+INCLUDE(CMakeForceCompiler)
+
+# CROSS COMPILER SETTING
+SET(CMAKE_SYSTEM_NAME Generic)
+CMAKE_MINIMUM_REQUIRED (VERSION 2.6)
+
+# THE VERSION NUMBER
+SET (Tutorial_VERSION_MAJOR 1)
+SET (Tutorial_VERSION_MINOR 0)
+
+# ENABLE ASM
+ENABLE_LANGUAGE(ASM)
+
+SET(CMAKE_STATIC_LIBRARY_PREFIX)
+SET(CMAKE_STATIC_LIBRARY_SUFFIX)
+
+SET(CMAKE_EXECUTABLE_LIBRARY_PREFIX)
+SET(CMAKE_EXECUTABLE_LIBRARY_SUFFIX)
+ 
+# CURRENT DIRECTORY
+SET(ProjDirPath ${CMAKE_CURRENT_SOURCE_DIR})
+
+# DEBUG LINK FILE
+#set(CMAKE_EXE_LINKER_FLAGS_DEBUG "${CMAKE_EXE_LINKER_FLAGS_DEBUG} -T${ProjDirPath}/../../../../../../platform/devices/VF6XX/linker/gcc/vf6xx_tcm.ld  -static")
+
+# RELEASE LINK FILE
+#set(CMAKE_EXE_LINKER_FLAGS_RELEASE "${CMAKE_EXE_LINKER_FLAGS_RELEASE} -T${ProjDirPath}/../../../../../../platform/devices/VF6XX/linker/gcc/vf6xx_tcm.ld  -static")
+
+# DEBUG LINK FILE
+set(CMAKE_EXE_LINKER_FLAGS_DEBUG "${CMAKE_EXE_LINKER_FLAGS_DEBUG} -T${ProjDirPath}/../../../../../../platform/devices/VF6XX/linker/gcc/vf6xx_sysram-sram.ld  -static")
+
+# RELEASE LINK FILE
+set(CMAKE_EXE_LINKER_FLAGS_RELEASE "${CMAKE_EXE_LINKER_FLAGS_RELEASE} -T${ProjDirPath}/../../../../../../platform/devices/VF6XX/linker/gcc/vf6xx_sysram-sram.ld  -static")
+
+# DEBUG ASM FLAGS
+SET(CMAKE_ASM_FLAGS_DEBUG "${CMAKE_ASM_FLAGS_DEBUG} -g  -mcpu=cortex-m4  -mfloat-abi=hard  -mfpu=fpv4-sp-d16  -mthumb  -Wall  -fno-common  -ffunction-sections  -fdata-sections  -ffreestanding  -fno-builtin  -Os  -mapcs  -std=gnu99")
+
+# DEBUG C FLAGS
+SET(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -g  -mcpu=cortex-m4  -mfloat-abi=hard  -mfpu=fpv4-sp-d16  -mthumb  -MMD  -MP  -Wall  -fno-common  -ffunction-sections  -fdata-sections  -ffreestanding  -fno-builtin  -Os  -mapcs  -std=gnu99")
+
+# DEBUG LD FLAGS
+SET(CMAKE_EXE_LINKER_FLAGS_DEBUG "${CMAKE_EXE_LINKER_FLAGS_DEBUG} -g  -mcpu=cortex-m4  -mfloat-abi=hard  -mfpu=fpv4-sp-d16  --specs=nano.specs  -lm  -Wall  -fno-common  -ffunction-sections  -fdata-sections  -ffreestanding  -fno-builtin  -Os  -mthumb  -mapcs  -Xlinker --gc-sections  -Xlinker -static  -Xlinker -z  -Xlinker muldefs  -Xlinker --defsym=__stack_size__=0x400  -Xlinker --defsym=__heap_size__=0x200")
+
+# RELEASE ASM FLAGS
+SET(CMAKE_ASM_FLAGS_RELEASE "${CMAKE_ASM_FLAGS_RELEASE} -mcpu=cortex-m4  -mfloat-abi=hard  -mfpu=fpv4-sp-d16  -mthumb  -Wall  -fno-common  -ffunction-sections  -fdata-sections  -ffreestanding  -fno-builtin  -Os  -mapcs  -std=gnu99")
+
+# RELEASE C FLAGS
+SET(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} -mcpu=cortex-m4  -mfloat-abi=hard  -mfpu=fpv4-sp-d16  -mthumb  -MMD  -MP  -Wall  -fno-common  -ffunction-sections  -fdata-sections  -ffreestanding  -fno-builtin  -Os  -mapcs  -std=gnu99")
+
+# RELEASE LD FLAGS
+SET(CMAKE_EXE_LINKER_FLAGS_RELEASE "${CMAKE_EXE_LINKER_FLAGS_RELEASE} -mcpu=cortex-m4  -mfloat-abi=hard  -mfpu=fpv4-sp-d16  --specs=nano.specs  -lm  -Wall  -fno-common  -ffunction-sections  -fdata-sections  -ffreestanding  -fno-builtin  -Os  -mthumb  -mapcs  -Xlinker --gc-sections  -Xlinker -static  -Xlinker -z  -Xlinker muldefs  -Xlinker --defsym=__stack_size__=0x400  -Xlinker --defsym=__heap_size__=0x200")
+
+# ASM MACRO
+SET(CMAKE_ASM_FLAGS_DEBUG "${CMAKE_ASM_FLAGS_DEBUG}  -D__DEBUG")
+
+# C MACRO
+SET(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG}  -D__DEBUG")
+SET(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG}  -DCPU_VF6XX_M4")
+SET(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE}  -D__NDEBUG")
+SET(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE}  -DCPU_VF6XX_M4")
+
+# CXX MACRO
+
+# INCLUDE_DIRECTORIES
+IF(CMAKE_BUILD_TYPE MATCHES Debug)
+    INCLUDE_DIRECTORIES(${ProjDirPath}/../../../..)
+    INCLUDE_DIRECTORIES(${ProjDirPath}/../../../../../../rtos/FreeRTOS/Source/portable/GCC/ARM_CM4F)
+    INCLUDE_DIRECTORIES(${ProjDirPath}/../../../../../../platform/CMSIS/Include)
+    INCLUDE_DIRECTORIES(${ProjDirPath}/../../../../../../platform/devices)
+    INCLUDE_DIRECTORIES(${ProjDirPath}/../../../../../../platform/devices/VF6XX/include)
+    INCLUDE_DIRECTORIES(${ProjDirPath}/../../../../../../platform/devices/VF6XX/startup)
+    INCLUDE_DIRECTORIES(${ProjDirPath}/../../../../../../platform/drivers/inc)
+    INCLUDE_DIRECTORIES(${ProjDirPath}/../../../../../../middleware/multicore/open-amp/porting/vf6xx_m4)
+    INCLUDE_DIRECTORIES(${ProjDirPath}/../../../../../../rtos/FreeRTOS/Source/include)
+    INCLUDE_DIRECTORIES(${ProjDirPath}/../../../../../../platform/utilities/inc)
+    INCLUDE_DIRECTORIES(${ProjDirPath}/../../../..)
+    INCLUDE_DIRECTORIES(${ProjDirPath}/../../../../../../middleware/multicore/open-amp)
+ELSEIF(CMAKE_BUILD_TYPE MATCHES Release)
+    INCLUDE_DIRECTORIES(${ProjDirPath}/../../../..)
+    INCLUDE_DIRECTORIES(${ProjDirPath}/../../../../../../rtos/FreeRTOS/Source/portable/GCC/ARM_CM4F)
+    INCLUDE_DIRECTORIES(${ProjDirPath}/../../../../../../platform/CMSIS/Include)
+    INCLUDE_DIRECTORIES(${ProjDirPath}/../../../../../../platform/devices)
+    INCLUDE_DIRECTORIES(${ProjDirPath}/../../../../../../platform/devices/VF6XX/include)
+    INCLUDE_DIRECTORIES(${ProjDirPath}/../../../../../../platform/devices/VF6XX/startup)
+    INCLUDE_DIRECTORIES(${ProjDirPath}/../../../../../../platform/drivers/inc)
+    INCLUDE_DIRECTORIES(${ProjDirPath}/../../../../../../middleware/multicore/open-amp/porting/vf6xx_m4)
+    INCLUDE_DIRECTORIES(${ProjDirPath}/../../../../../../rtos/FreeRTOS/Source/include)
+    INCLUDE_DIRECTORIES(${ProjDirPath}/../../../../../../platform/utilities/inc)
+    INCLUDE_DIRECTORIES(${ProjDirPath}/../../..)
+    INCLUDE_DIRECTORIES(${ProjDirPath}/../../../../../../middleware/multicore/open-amp)
+ENDIF()
+
+# ADD_EXECUTABLE
+ADD_EXECUTABLE(rpmsg_pingpong_example
+    "${ProjDirPath}/../../../../../../rtos/FreeRTOS/Source/portable/GCC/ARM_CM4F/port.c"
+    "${ProjDirPath}/../../../../../../rtos/FreeRTOS/Source/portable/GCC/ARM_CM4F/portmacro.h"
+    "${ProjDirPath}/../../../../../../platform/devices/VF6XX/startup/gcc/startup_VF6XX_M4.S"
+    "${ProjDirPath}/../../../../../../rtos/FreeRTOS/Source/portable/MemMang/heap_2.c"
+    "${ProjDirPath}/../../../../../../middleware/multicore/open-amp/porting/vf6xx_m4/platform.h"
+    "${ProjDirPath}/../../../../../../middleware/multicore/open-amp/porting/vf6xx_m4/plat_porting.h"
+    "${ProjDirPath}/../../../../../../middleware/multicore/open-amp/rpmsg/rpmsg.h"
+    "${ProjDirPath}/../../../../../../middleware/multicore/open-amp/common/hil/hil.h"
+    "${ProjDirPath}/../../../../../../middleware/multicore/open-amp/common/llist/llist.h"
+    "${ProjDirPath}/../../../../../../middleware/multicore/open-amp/common/shm/sh_mem.h"
+    "${ProjDirPath}/../../../../../../middleware/multicore/open-amp/porting/config/config.h"
+    "${ProjDirPath}/../../../../../../middleware/multicore/open-amp/porting/env/env.h"
+    "${ProjDirPath}/../../../../../../middleware/multicore/open-amp/rpmsg/rpmsg_core.h"
+    "${ProjDirPath}/../../../../../../middleware/multicore/open-amp/virtio/virtio.h"
+    "${ProjDirPath}/../../../../../../middleware/multicore/open-amp/virtio/virtio_ring.h"
+    "${ProjDirPath}/../../../../../../middleware/multicore/open-amp/virtio/virtqueue.h"
+    "${ProjDirPath}/../../../../../../rtos/FreeRTOS/Source/include/croutine.h"
+    "${ProjDirPath}/../../../../../../rtos/FreeRTOS/Source/include/event_groups.h"
+    "${ProjDirPath}/../../../../../../rtos/FreeRTOS/Source/include/FreeRTOS.h"
+    "${ProjDirPath}/../../../../../../rtos/FreeRTOS/Source/include/list.h"
+    "${ProjDirPath}/../../../../../../rtos/FreeRTOS/Source/include/mpu_wrappers.h"
+    "${ProjDirPath}/../../../../../../rtos/FreeRTOS/Source/include/portable.h"
+    "${ProjDirPath}/../../../../../../rtos/FreeRTOS/Source/include/projdefs.h"
+    "${ProjDirPath}/../../../../../../rtos/FreeRTOS/Source/include/queue.h"
+    "${ProjDirPath}/../../../../../../rtos/FreeRTOS/Source/include/semphr.h"
+    "${ProjDirPath}/../../../../../../rtos/FreeRTOS/Source/include/StackMacros.h"
+    "${ProjDirPath}/../../../../../../rtos/FreeRTOS/Source/include/task.h"
+    "${ProjDirPath}/../../../../../../rtos/FreeRTOS/Source/include/timers.h"
+    "${ProjDirPath}/../../../../../../platform/drivers/inc/ccm_vf6xx.h"
+    "${ProjDirPath}/../../../../../../platform/drivers/inc/lpuart_vf6xx.h"
+    "${ProjDirPath}/../../../../../../platform/drivers/inc/sema4.h"
+    "${ProjDirPath}/../../../../../../middleware/multicore/open-amp/porting/vf6xx_m4/platform.c"
+    "${ProjDirPath}/../../../../../../middleware/multicore/open-amp/porting/vf6xx_m4/platform_info.c"
+    "${ProjDirPath}/../../../../../../middleware/multicore/open-amp/common/hil/hil.c"
+    "${ProjDirPath}/../../../../../../middleware/multicore/open-amp/common/llist/llist.c"
+    "${ProjDirPath}/../../../../../../middleware/multicore/open-amp/common/shm/sh_mem.c"
+    "${ProjDirPath}/../../../../../../middleware/multicore/open-amp/porting/config/config.c"
+    "${ProjDirPath}/../../../../../../middleware/multicore/open-amp/porting/env/freertos_env.c"
+    "${ProjDirPath}/../../../../../../middleware/multicore/open-amp/rpmsg/remote_device.c"
+    "${ProjDirPath}/../../../../../../middleware/multicore/open-amp/rpmsg/rpmsg.c"
+    "${ProjDirPath}/../../../../../../middleware/multicore/open-amp/rpmsg/rpmsg_core.c"
+    "${ProjDirPath}/../../../../../../middleware/multicore/open-amp/virtio/virtio.c"
+    "${ProjDirPath}/../../../../../../middleware/multicore/open-amp/virtio/virtqueue.c"
+    "${ProjDirPath}/../../../../../../rtos/FreeRTOS/Source/croutine.c"
+    "${ProjDirPath}/../../../../../../rtos/FreeRTOS/Source/event_groups.c"
+    "${ProjDirPath}/../../../../../../rtos/FreeRTOS/Source/list.c"
+    "${ProjDirPath}/../../../../../../rtos/FreeRTOS/Source/queue.c"
+    "${ProjDirPath}/../../../../../../rtos/FreeRTOS/Source/tasks.c"
+    "${ProjDirPath}/../../../../../../rtos/FreeRTOS/Source/timers.c"
+    "${ProjDirPath}/../../../../../../platform/drivers/src/ccm_vf6xx.c"
+    "${ProjDirPath}/../../../../../../platform/drivers/src/lpuart_vf6xx.c"
+    "${ProjDirPath}/../../../../../../platform/drivers/src/sema4.c"
+    "${ProjDirPath}/../../../../../../platform/utilities/src/debug_console_vf6xx.c"
+    "${ProjDirPath}/../../../../../../platform/utilities/inc/debug_console_vf6xx.h"
+    "${ProjDirPath}/../../../../../../platform/utilities/src/debug_console.c"
+    "${ProjDirPath}/../../../../../../platform/utilities/inc/debug_console.h"
+    "${ProjDirPath}/../../../../../../platform/utilities/src/print_scan.c"
+    "${ProjDirPath}/../../../../../../platform/utilities/src/print_scan.h"
+    "${ProjDirPath}/../../../../../../platform/devices/VF6XX/startup/system_VF6XX_M4.c"
+    "${ProjDirPath}/../../../../../../platform/devices/VF6XX/startup/system_VF6XX_M4.h"
+    "${ProjDirPath}/../pingpong.c"
+)
+SET_TARGET_PROPERTIES(rpmsg_pingpong_example PROPERTIES OUTPUT_NAME "rpmsg_pingpong_example.elf")
+
+TARGET_LINK_LIBRARIES(rpmsg_pingpong_example -Wl,--start-group)
+# LIBRARIES
+IF(CMAKE_BUILD_TYPE MATCHES Debug)
+ELSEIF(CMAKE_BUILD_TYPE MATCHES Release)
+ENDIF()
+
+# SYSTEM LIBRARIES
+TARGET_LINK_LIBRARIES(rpmsg_pingpong_example m)
+TARGET_LINK_LIBRARIES(rpmsg_pingpong_example c)
+TARGET_LINK_LIBRARIES(rpmsg_pingpong_example gcc)
+TARGET_LINK_LIBRARIES(rpmsg_pingpong_example nosys)
+TARGET_LINK_LIBRARIES(rpmsg_pingpong_example -Wl,--end-group)
+
+# MAP FILE
+SET(CMAKE_EXE_LINKER_FLAGS_DEBUG "${CMAKE_EXE_LINKER_FLAGS_DEBUG}  -Xlinker -Map=debug/rpmsg_pingpong_example.map")
+SET(CMAKE_EXE_LINKER_FLAGS_RELEASE "${CMAKE_EXE_LINKER_FLAGS_RELEASE}  -Xlinker -Map=release/rpmsg_pingpong_example.map")
+
+# BIN AND HEX
+ADD_CUSTOM_COMMAND(TARGET rpmsg_pingpong_example POST_BUILD COMMAND ${CMAKE_OBJCOPY} -Oihex ${EXECUTABLE_OUTPUT_PATH}/rpmsg_pingpong_example.elf ${EXECUTABLE_OUTPUT_PATH}/rpmsg_pingpong_example.hex)
+ADD_CUSTOM_COMMAND(TARGET rpmsg_pingpong_example POST_BUILD COMMAND ${CMAKE_OBJCOPY} -Obinary ${EXECUTABLE_OUTPUT_PATH}/rpmsg_pingpong_example.elf ${EXECUTABLE_OUTPUT_PATH}/rpmsg_pingpong_example.bin)
diff --git a/examples/vf6xx_colibri_m4/demo_apps/rpmsg/pingpong/armgcc/build_all.bat b/examples/vf6xx_colibri_m4/demo_apps/rpmsg/pingpong/armgcc/build_all.bat
new file mode 100755
index 0000000..0cf721f
--- /dev/null
+++ b/examples/vf6xx_colibri_m4/demo_apps/rpmsg/pingpong/armgcc/build_all.bat
@@ -0,0 +1,5 @@
+cmake -DCMAKE_TOOLCHAIN_FILE="../../../../../../tools/cmake_toolchain_files/armgcc.cmake" -G "MinGW Makefiles" -DCMAKE_BUILD_TYPE=Debug  .
+mingw32-make -j4
+cmake -DCMAKE_TOOLCHAIN_FILE="../../../../../../tools/cmake_toolchain_files/armgcc.cmake" -G "MinGW Makefiles" -DCMAKE_BUILD_TYPE=Release  .
+mingw32-make -j4
+pause
diff --git a/examples/vf6xx_colibri_m4/demo_apps/rpmsg/pingpong/armgcc/build_all.sh b/examples/vf6xx_colibri_m4/demo_apps/rpmsg/pingpong/armgcc/build_all.sh
new file mode 100755
index 0000000..3827529
--- /dev/null
+++ b/examples/vf6xx_colibri_m4/demo_apps/rpmsg/pingpong/armgcc/build_all.sh
@@ -0,0 +1,5 @@
+#!/bin/sh
+cmake -DCMAKE_TOOLCHAIN_FILE="../../../../../../tools/cmake_toolchain_files/armgcc.cmake" -G "Unix Makefiles" -DCMAKE_BUILD_TYPE=Debug  .
+make -j4
+cmake -DCMAKE_TOOLCHAIN_FILE="../../../../../../tools/cmake_toolchain_files/armgcc.cmake" -G "Unix Makefiles" -DCMAKE_BUILD_TYPE=Release  .
+make -j4
diff --git a/examples/vf6xx_colibri_m4/demo_apps/rpmsg/pingpong/armgcc/build_debug.bat b/examples/vf6xx_colibri_m4/demo_apps/rpmsg/pingpong/armgcc/build_debug.bat
new file mode 100755
index 0000000..e9ccfdd
--- /dev/null
+++ b/examples/vf6xx_colibri_m4/demo_apps/rpmsg/pingpong/armgcc/build_debug.bat
@@ -0,0 +1,3 @@
+cmake -DCMAKE_TOOLCHAIN_FILE="../../../../../../tools/cmake_toolchain_files/armgcc.cmake" -G "MinGW Makefiles" -DCMAKE_BUILD_TYPE=Debug  .
+mingw32-make -j4
+pause
diff --git a/examples/vf6xx_colibri_m4/demo_apps/rpmsg/pingpong/armgcc/build_debug.sh b/examples/vf6xx_colibri_m4/demo_apps/rpmsg/pingpong/armgcc/build_debug.sh
new file mode 100755
index 0000000..effd076
--- /dev/null
+++ b/examples/vf6xx_colibri_m4/demo_apps/rpmsg/pingpong/armgcc/build_debug.sh
@@ -0,0 +1,3 @@
+#!/bin/sh
+cmake -DCMAKE_TOOLCHAIN_FILE="../../../../../../tools/cmake_toolchain_files/armgcc.cmake" -G "Unix Makefiles" -DCMAKE_BUILD_TYPE=Debug  .
+make -j4
diff --git a/examples/vf6xx_colibri_m4/demo_apps/rpmsg/pingpong/armgcc/build_release.bat b/examples/vf6xx_colibri_m4/demo_apps/rpmsg/pingpong/armgcc/build_release.bat
new file mode 100755
index 0000000..0759349
--- /dev/null
+++ b/examples/vf6xx_colibri_m4/demo_apps/rpmsg/pingpong/armgcc/build_release.bat
@@ -0,0 +1,3 @@
+cmake -DCMAKE_TOOLCHAIN_FILE="../../../../../../tools/cmake_toolchain_files/armgcc.cmake" -G "MinGW Makefiles" -DCMAKE_BUILD_TYPE=Release  .
+mingw32-make -j4
+pause
diff --git a/examples/vf6xx_colibri_m4/demo_apps/rpmsg/pingpong/armgcc/build_release.sh b/examples/vf6xx_colibri_m4/demo_apps/rpmsg/pingpong/armgcc/build_release.sh
new file mode 100755
index 0000000..a12067d
--- /dev/null
+++ b/examples/vf6xx_colibri_m4/demo_apps/rpmsg/pingpong/armgcc/build_release.sh
@@ -0,0 +1,3 @@
+#!/bin/sh
+cmake -DCMAKE_TOOLCHAIN_FILE="../../../../../../tools/cmake_toolchain_files/armgcc.cmake" -G "Unix Makefiles" -DCMAKE_BUILD_TYPE=Release  .
+make -j4
diff --git a/examples/vf6xx_colibri_m4/demo_apps/rpmsg/pingpong/armgcc/clean.bat b/examples/vf6xx_colibri_m4/demo_apps/rpmsg/pingpong/armgcc/clean.bat
new file mode 100755
index 0000000..ffea088
--- /dev/null
+++ b/examples/vf6xx_colibri_m4/demo_apps/rpmsg/pingpong/armgcc/clean.bat
@@ -0,0 +1,3 @@
+RD /s /Q Debug Release CMakeFiles
+DEL /s /Q /F Makefile cmake_install.cmake CMakeCache.txt
+pause
diff --git a/examples/vf6xx_colibri_m4/demo_apps/rpmsg/pingpong/armgcc/clean.sh b/examples/vf6xx_colibri_m4/demo_apps/rpmsg/pingpong/armgcc/clean.sh
new file mode 100755
index 0000000..795ad87
--- /dev/null
+++ b/examples/vf6xx_colibri_m4/demo_apps/rpmsg/pingpong/armgcc/clean.sh
@@ -0,0 +1,3 @@
+#!/bin/sh
+rm -rf debug release CMakeFiles
+rm -rf Makefile cmake_install.cmake CMakeCache.txt
diff --git a/examples/vf6xx_colibri_m4/demo_apps/rpmsg/pingpong/pingpong.c b/examples/vf6xx_colibri_m4/demo_apps/rpmsg/pingpong/pingpong.c
new file mode 100644
index 0000000..2668471
--- /dev/null
+++ b/examples/vf6xx_colibri_m4/demo_apps/rpmsg/pingpong/pingpong.c
@@ -0,0 +1,150 @@
+/*
+ * Copyright (c) 2016, Toradex AG
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ *
+ * o Redistributions of source code must retain the above copyright notice, this list
+ *   of conditions and the following disclaimer.
+ *
+ * o Redistributions in binary form must reproduce the above copyright notice, this
+ *   list of conditions and the following disclaimer in the documentation and/or
+ *   other materials provided with the distribution.
+ *
+ * o Neither the name of Freescale Semiconductor, Inc. nor the names of its
+ *   contributors may be used to endorse or promote products derived from this
+ *   software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
+ * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <stdio.h>
+#include <errno.h>
+
+#include "FreeRTOS.h"
+#include "task.h"
+#include "semphr.h"
+#include "rpmsg/rpmsg.h"
+#include "plat_porting.h"
+#include <ccm_vf6xx.h>
+#include "debug_console_vf6xx.h"
+
+/*
+ * APP decided interrupt priority
+ */
+#define APP_MSCM_IRQ_PRIORITY	3
+
+/* Internal functions */
+static void rpmsg_channel_created(struct rpmsg_channel *rp_chnl);
+static void rpmsg_channel_deleted(struct rpmsg_channel *rp_chnl);
+static void rpmsg_read_cb(struct rpmsg_channel *, void *, int, void *, unsigned long);
+
+/* Globals */
+static struct remote_device *rdev;
+static struct rpmsg_channel *app_chnl;
+static uint32_t msg_var;
+static SemaphoreHandle_t app_sema;
+
+/*!
+ * @brief A basic RPMSG task
+ */
+void PingPongTask(void *pvParameters)
+{
+    printf("RPMSG PingPong Demo...\r\n");
+
+    app_sema = xSemaphoreCreateCounting(2, 0);
+
+    printf("RPMSG Init as Remote\r\n");
+    /*
+    * RPMSG Init as REMOTE
+    */
+    rpmsg_init(0, &rdev, rpmsg_channel_created, rpmsg_channel_deleted, rpmsg_read_cb, RPMSG_MASTER);
+
+    /*
+    * rpmsg_channel_created will post the first semaphore
+    */
+    xSemaphoreTake(app_sema, portMAX_DELAY);
+    printf("Name service handshake is done, M4 has setup a rpmsg channel [%d ---> %d]\r\n", app_chnl->src, app_chnl->dst);
+
+
+    /*
+    * pingpong demo loop
+    */
+    for (;;) {
+	xSemaphoreTake(app_sema, portMAX_DELAY);
+	printf("Get Data From A5 : %d\r\n", msg_var);
+	msg_var++;
+	rpmsg_send(app_chnl, (void*)&msg_var, sizeof(uint32_t));
+    }
+}
+
+int main(void)
+{
+    /* Init Clock Control and UART */
+    CCM_GetClocks();
+    CCM_ControlGate(ccmCcgrGateUart2, ccmClockNeededAll);
+
+    vf6xx_DbgConsole_Init(UART2, ccmIpgBusClk, 115200);
+
+    printf("Starting RPMSG PingPong Demo...\r\n");
+
+    /*
+      * Prepare for the MSCM Interrupt
+      * MSCM must be initialized before rpmsg init is called
+      */
+    platform_interrupt_enable();
+    NVIC_SetPriority(CPU2CPU_INT0_IRQ, APP_MSCM_IRQ_PRIORITY);
+    NVIC_SetPriority(CPU2CPU_INT1_IRQ, APP_MSCM_IRQ_PRIORITY);
+
+    // Create a demo task which will print Hello world and echo user's input.
+    xTaskCreate(PingPongTask, "Ping Pong Task", configMINIMAL_STACK_SIZE,
+		NULL, tskIDLE_PRIORITY+1, NULL);
+
+    // Start FreeRTOS scheduler.
+    vTaskStartScheduler();
+
+    // Should never reach this point.
+    while (true);
+}
+
+/* rpmsg_rx_callback will call into this for a channel creation event*/
+static void rpmsg_channel_created(struct rpmsg_channel *rp_chnl)
+{
+    /*
+      * we should give the created rp_chnl handler to app layer
+      */
+    app_chnl = rp_chnl;
+
+    /*
+      * sync to application layer
+      */
+    xSemaphoreGiveFromISR(app_sema, NULL);
+}
+
+static void rpmsg_channel_deleted(struct rpmsg_channel *rp_chnl)
+{
+    rpmsg_destroy_ept(rp_chnl->rp_ept);
+}
+
+static void rpmsg_read_cb(struct rpmsg_channel *rp_chnl, void *data, int len,
+                void * priv, unsigned long src)
+{
+    msg_var = *(uint32_t*)data;
+    /*
+    * sync to application layer
+    */
+    xSemaphoreGiveFromISR(app_sema, NULL);
+}
+/*******************************************************************************
+ * EOF
+ ******************************************************************************/
diff --git a/examples/vf6xx_colibri_m4/demo_apps/rpmsg/str_echo/armgcc/CMakeLists.txt b/examples/vf6xx_colibri_m4/demo_apps/rpmsg/str_echo/armgcc/CMakeLists.txt
new file mode 100644
index 0000000..35ba82c
--- /dev/null
+++ b/examples/vf6xx_colibri_m4/demo_apps/rpmsg/str_echo/armgcc/CMakeLists.txt
@@ -0,0 +1,178 @@
+INCLUDE(CMakeForceCompiler)
+
+# CROSS COMPILER SETTING
+SET(CMAKE_SYSTEM_NAME Generic)
+CMAKE_MINIMUM_REQUIRED (VERSION 2.6)
+
+# THE VERSION NUMBER
+SET (Tutorial_VERSION_MAJOR 1)
+SET (Tutorial_VERSION_MINOR 0)
+
+# ENABLE ASM
+ENABLE_LANGUAGE(ASM)
+
+SET(CMAKE_STATIC_LIBRARY_PREFIX)
+SET(CMAKE_STATIC_LIBRARY_SUFFIX)
+
+SET(CMAKE_EXECUTABLE_LIBRARY_PREFIX)
+SET(CMAKE_EXECUTABLE_LIBRARY_SUFFIX)
+
+# CURRENT DIRECTORY
+SET(ProjDirPath ${CMAKE_CURRENT_SOURCE_DIR})
+
+# DEBUG LINK FILE
+#set(CMAKE_EXE_LINKER_FLAGS_DEBUG "${CMAKE_EXE_LINKER_FLAGS_DEBUG} -T${ProjDirPath}/../../../../../../platform/devices/VF6XX/linker/gcc/vf6xx_tcm.ld  -static")
+
+# RELEASE LINK FILE
+#set(CMAKE_EXE_LINKER_FLAGS_RELEASE "${CMAKE_EXE_LINKER_FLAGS_RELEASE} -T${ProjDirPath}/../../../../../../platform/devices/VF6XX/linker/gcc/vf6xx_tcm.ld  -static")
+
+# DEBUG LINK FILE
+set(CMAKE_EXE_LINKER_FLAGS_DEBUG "${CMAKE_EXE_LINKER_FLAGS_DEBUG} -T${ProjDirPath}/../../../../../../platform/devices/VF6XX/linker/gcc/vf6xx_sysram-sram.ld  -static")
+
+# RELEASE LINK FILE
+set(CMAKE_EXE_LINKER_FLAGS_RELEASE "${CMAKE_EXE_LINKER_FLAGS_RELEASE} -T${ProjDirPath}/../../../../../../platform/devices/VF6XX/linker/gcc/vf6xx_sysram-sram.ld  -static")
+
+# DEBUG ASM FLAGS
+SET(CMAKE_ASM_FLAGS_DEBUG "${CMAKE_ASM_FLAGS_DEBUG} -g  -mcpu=cortex-m4  -mfloat-abi=hard  -mfpu=fpv4-sp-d16  -mthumb  -Wall  -fno-common  -ffunction-sections  -fdata-sections  -ffreestanding  -fno-builtin  -Os  -mapcs  -std=gnu99")
+
+# DEBUG C FLAGS
+SET(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -g  -mcpu=cortex-m4  -mfloat-abi=hard  -mfpu=fpv4-sp-d16  -mthumb  -MMD  -MP  -Wall  -fno-common  -ffunction-sections  -fdata-sections  -ffreestanding  -fno-builtin  -Os  -mapcs  -std=gnu99")
+
+# DEBUG LD FLAGS
+SET(CMAKE_EXE_LINKER_FLAGS_DEBUG "${CMAKE_EXE_LINKER_FLAGS_DEBUG} -g  -mcpu=cortex-m4  -mfloat-abi=hard  -mfpu=fpv4-sp-d16  --specs=nano.specs  -lm  -Wall  -fno-common  -ffunction-sections  -fdata-sections  -ffreestanding  -fno-builtin  -Os  -mthumb  -mapcs  -Xlinker --gc-sections  -Xlinker -static  -Xlinker -z  -Xlinker muldefs  -Xlinker --defsym=__stack_size__=0x400  -Xlinker --defsym=__heap_size__=0x200")
+
+# RELEASE ASM FLAGS
+SET(CMAKE_ASM_FLAGS_RELEASE "${CMAKE_ASM_FLAGS_RELEASE} -mcpu=cortex-m4  -mfloat-abi=hard  -mfpu=fpv4-sp-d16  -mthumb  -Wall  -fno-common  -ffunction-sections  -fdata-sections  -ffreestanding  -fno-builtin  -Os  -mapcs  -std=gnu99")
+
+# RELEASE C FLAGS
+SET(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} -mcpu=cortex-m4  -mfloat-abi=hard  -mfpu=fpv4-sp-d16  -mthumb  -MMD  -MP  -Wall  -fno-common  -ffunction-sections  -fdata-sections  -ffreestanding  -fno-builtin  -Os  -mapcs  -std=gnu99")
+
+# RELEASE LD FLAGS
+SET(CMAKE_EXE_LINKER_FLAGS_RELEASE "${CMAKE_EXE_LINKER_FLAGS_RELEASE} -mcpu=cortex-m4  -mfloat-abi=hard  -mfpu=fpv4-sp-d16  --specs=nano.specs  -lm  -Wall  -fno-common  -ffunction-sections  -fdata-sections  -ffreestanding  -fno-builtin  -Os  -mthumb  -mapcs  -Xlinker --gc-sections  -Xlinker -static  -Xlinker -z  -Xlinker muldefs  -Xlinker --defsym=__stack_size__=0x400  -Xlinker --defsym=__heap_size__=0x200")
+
+# ASM MACRO
+SET(CMAKE_ASM_FLAGS_DEBUG "${CMAKE_ASM_FLAGS_DEBUG}  -D__DEBUG")
+
+# C MACRO
+SET(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG}  -D__DEBUG")
+SET(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG}  -DCPU_VF6XX_M4")
+SET(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE}  -D__NDEBUG")
+SET(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE}  -DCPU_VF6XX_M4")
+
+# CXX MACRO
+
+# INCLUDE_DIRECTORIES
+IF(CMAKE_BUILD_TYPE MATCHES Debug)
+    INCLUDE_DIRECTORIES(${ProjDirPath}/../../../..)
+    INCLUDE_DIRECTORIES(${ProjDirPath}/../../../../../../rtos/FreeRTOS/Source/portable/GCC/ARM_CM4F)
+    INCLUDE_DIRECTORIES(${ProjDirPath}/../../../../../../platform/CMSIS/Include)
+    INCLUDE_DIRECTORIES(${ProjDirPath}/../../../../../../platform/devices)
+    INCLUDE_DIRECTORIES(${ProjDirPath}/../../../../../../platform/devices/VF6XX/include)
+    INCLUDE_DIRECTORIES(${ProjDirPath}/../../../../../../platform/devices/VF6XX/startup)
+    INCLUDE_DIRECTORIES(${ProjDirPath}/../../../../../../platform/drivers/inc)
+    INCLUDE_DIRECTORIES(${ProjDirPath}/../../../../../../middleware/multicore/open-amp/porting/vf6xx_m4)
+    INCLUDE_DIRECTORIES(${ProjDirPath}/../../../../../../rtos/FreeRTOS/Source/include)
+    INCLUDE_DIRECTORIES(${ProjDirPath}/../../../../../../platform/utilities/inc)
+    INCLUDE_DIRECTORIES(${ProjDirPath}/../../../..)
+    INCLUDE_DIRECTORIES(${ProjDirPath}/../../../../../../middleware/multicore/open-amp)
+ELSEIF(CMAKE_BUILD_TYPE MATCHES Release)
+    INCLUDE_DIRECTORIES(${ProjDirPath}/../../../..)
+    INCLUDE_DIRECTORIES(${ProjDirPath}/../../../../../../rtos/FreeRTOS/Source/portable/GCC/ARM_CM4F)
+    INCLUDE_DIRECTORIES(${ProjDirPath}/../../../../../../platform/CMSIS/Include)
+    INCLUDE_DIRECTORIES(${ProjDirPath}/../../../../../../platform/devices)
+    INCLUDE_DIRECTORIES(${ProjDirPath}/../../../../../../platform/devices/VF6XX/include)
+    INCLUDE_DIRECTORIES(${ProjDirPath}/../../../../../../platform/devices/VF6XX/startup)
+    INCLUDE_DIRECTORIES(${ProjDirPath}/../../../../../../platform/drivers/inc)
+    INCLUDE_DIRECTORIES(${ProjDirPath}/../../../../../../middleware/multicore/open-amp/porting/vf6xx_m4)
+    INCLUDE_DIRECTORIES(${ProjDirPath}/../../../../../../rtos/FreeRTOS/Source/include)
+    INCLUDE_DIRECTORIES(${ProjDirPath}/../../../../../../platform/utilities/inc)
+    INCLUDE_DIRECTORIES(${ProjDirPath}/../../../..)
+    INCLUDE_DIRECTORIES(${ProjDirPath}/../../../../../../middleware/multicore/open-amp)
+ENDIF()
+
+# ADD_EXECUTABLE
+ADD_EXECUTABLE(rpmsg_str_echo_example
+    "${ProjDirPath}/../../../../../../rtos/FreeRTOS/Source/portable/GCC/ARM_CM4F/port.c"
+    "${ProjDirPath}/../../../../../../rtos/FreeRTOS/Source/portable/GCC/ARM_CM4F/portmacro.h"
+    "${ProjDirPath}/../../../../../../platform/devices/VF6XX/startup/gcc/startup_VF6XX_M4.S"
+    "${ProjDirPath}/../../../../../../rtos/FreeRTOS/Source/portable/MemMang/heap_2.c"
+    "${ProjDirPath}/../../../../../../middleware/multicore/open-amp/porting/vf6xx_m4/platform.h"
+    "${ProjDirPath}/../../../../../../middleware/multicore/open-amp/porting/vf6xx_m4/plat_porting.h"
+    "${ProjDirPath}/../../../../../../middleware/multicore/open-amp/rpmsg/rpmsg.h"
+    "${ProjDirPath}/../../../../../../middleware/multicore/open-amp/common/hil/hil.h"
+    "${ProjDirPath}/../../../../../../middleware/multicore/open-amp/common/llist/llist.h"
+    "${ProjDirPath}/../../../../../../middleware/multicore/open-amp/common/shm/sh_mem.h"
+    "${ProjDirPath}/../../../../../../middleware/multicore/open-amp/porting/config/config.h"
+    "${ProjDirPath}/../../../../../../middleware/multicore/open-amp/porting/env/env.h"
+    "${ProjDirPath}/../../../../../../middleware/multicore/open-amp/rpmsg/rpmsg_core.h"
+    "${ProjDirPath}/../../../../../../middleware/multicore/open-amp/virtio/virtio.h"
+    "${ProjDirPath}/../../../../../../middleware/multicore/open-amp/virtio/virtio_ring.h"
+    "${ProjDirPath}/../../../../../../middleware/multicore/open-amp/virtio/virtqueue.h"
+    "${ProjDirPath}/../../../../../../rtos/FreeRTOS/Source/include/croutine.h"
+    "${ProjDirPath}/../../../../../../rtos/FreeRTOS/Source/include/event_groups.h"
+    "${ProjDirPath}/../../../../../../rtos/FreeRTOS/Source/include/FreeRTOS.h"
+    "${ProjDirPath}/../../../../../../rtos/FreeRTOS/Source/include/list.h"
+    "${ProjDirPath}/../../../../../../rtos/FreeRTOS/Source/include/mpu_wrappers.h"
+    "${ProjDirPath}/../../../../../../rtos/FreeRTOS/Source/include/portable.h"
+    "${ProjDirPath}/../../../../../../rtos/FreeRTOS/Source/include/projdefs.h"
+    "${ProjDirPath}/../../../../../../rtos/FreeRTOS/Source/include/queue.h"
+    "${ProjDirPath}/../../../../../../rtos/FreeRTOS/Source/include/semphr.h"
+    "${ProjDirPath}/../../../../../../rtos/FreeRTOS/Source/include/StackMacros.h"
+    "${ProjDirPath}/../../../../../../rtos/FreeRTOS/Source/include/task.h"
+    "${ProjDirPath}/../../../../../../rtos/FreeRTOS/Source/include/timers.h"
+    "${ProjDirPath}/../../../../../../platform/drivers/inc/ccm_vf6xx.h"
+    "${ProjDirPath}/../../../../../../platform/drivers/inc/lpuart_vf6xx.h"
+    "${ProjDirPath}/../../../../../../platform/drivers/inc/sema4.h"
+    "${ProjDirPath}/../../../../../../middleware/multicore/open-amp/porting/vf6xx_m4/platform.c"
+    "${ProjDirPath}/../../../../../../middleware/multicore/open-amp/porting/vf6xx_m4/platform_info.c"
+    "${ProjDirPath}/../../../../../../middleware/multicore/open-amp/common/hil/hil.c"
+    "${ProjDirPath}/../../../../../../middleware/multicore/open-amp/common/llist/llist.c"
+    "${ProjDirPath}/../../../../../../middleware/multicore/open-amp/common/shm/sh_mem.c"
+    "${ProjDirPath}/../../../../../../middleware/multicore/open-amp/porting/config/config.c"
+    "${ProjDirPath}/../../../../../../middleware/multicore/open-amp/porting/env/freertos_env.c"
+    "${ProjDirPath}/../../../../../../middleware/multicore/open-amp/rpmsg/remote_device.c"
+    "${ProjDirPath}/../../../../../../middleware/multicore/open-amp/rpmsg/rpmsg.c"
+    "${ProjDirPath}/../../../../../../middleware/multicore/open-amp/rpmsg/rpmsg_core.c"
+    "${ProjDirPath}/../../../../../../middleware/multicore/open-amp/virtio/virtio.c"
+    "${ProjDirPath}/../../../../../../middleware/multicore/open-amp/virtio/virtqueue.c"
+    "${ProjDirPath}/../../../../../../rtos/FreeRTOS/Source/croutine.c"
+    "${ProjDirPath}/../../../../../../rtos/FreeRTOS/Source/event_groups.c"
+    "${ProjDirPath}/../../../../../../rtos/FreeRTOS/Source/list.c"
+    "${ProjDirPath}/../../../../../../rtos/FreeRTOS/Source/queue.c"
+    "${ProjDirPath}/../../../../../../rtos/FreeRTOS/Source/tasks.c"
+    "${ProjDirPath}/../../../../../../rtos/FreeRTOS/Source/timers.c"
+    "${ProjDirPath}/../../../../../../platform/drivers/src/ccm_vf6xx.c"
+    "${ProjDirPath}/../../../../../../platform/drivers/src/lpuart_vf6xx.c"
+    "${ProjDirPath}/../../../../../../platform/drivers/src/sema4.c"
+    "${ProjDirPath}/../../../../../../platform/utilities/src/debug_console_vf6xx.c"
+    "${ProjDirPath}/../../../../../../platform/utilities/inc/debug_console_vf6xx.h"
+    "${ProjDirPath}/../../../../../../platform/utilities/src/debug_console.c"
+    "${ProjDirPath}/../../../../../../platform/utilities/inc/debug_console.h"
+    "${ProjDirPath}/../../../../../../platform/utilities/src/print_scan.c"
+    "${ProjDirPath}/../../../../../../platform/utilities/src/print_scan.h"
+    "${ProjDirPath}/../../../../../../platform/devices/VF6XX/startup/system_VF6XX_M4.c"
+    "${ProjDirPath}/../../../../../../platform/devices/VF6XX/startup/system_VF6XX_M4.h"
+    "${ProjDirPath}/../rpmsg_str_echo.c"
+)
+SET_TARGET_PROPERTIES(rpmsg_str_echo_example PROPERTIES OUTPUT_NAME "rpmsg_str_echo_example.elf")
+
+TARGET_LINK_LIBRARIES(rpmsg_str_echo_example -Wl,--start-group)
+# LIBRARIES
+IF(CMAKE_BUILD_TYPE MATCHES Debug)
+ELSEIF(CMAKE_BUILD_TYPE MATCHES Release)
+ENDIF()
+
+# SYSTEM LIBRARIES
+TARGET_LINK_LIBRARIES(rpmsg_str_echo_example m)
+TARGET_LINK_LIBRARIES(rpmsg_str_echo_example c)
+TARGET_LINK_LIBRARIES(rpmsg_str_echo_example gcc)
+TARGET_LINK_LIBRARIES(rpmsg_str_echo_example nosys)
+TARGET_LINK_LIBRARIES(rpmsg_str_echo_example -Wl,--end-group)
+
+# MAP FILE
+SET(CMAKE_EXE_LINKER_FLAGS_DEBUG "${CMAKE_EXE_LINKER_FLAGS_DEBUG}  -Xlinker -Map=debug/rpmsg_str_echo_example.map")
+SET(CMAKE_EXE_LINKER_FLAGS_RELEASE "${CMAKE_EXE_LINKER_FLAGS_RELEASE}  -Xlinker -Map=release/rpmsg_str_echo_example.map")
+
+# BIN AND HEX
+ADD_CUSTOM_COMMAND(TARGET rpmsg_str_echo_example POST_BUILD COMMAND ${CMAKE_OBJCOPY} -Oihex ${EXECUTABLE_OUTPUT_PATH}/rpmsg_str_echo_example.elf ${EXECUTABLE_OUTPUT_PATH}/rpmsg_str_echo_example.hex)
+ADD_CUSTOM_COMMAND(TARGET rpmsg_str_echo_example POST_BUILD COMMAND ${CMAKE_OBJCOPY} -Obinary ${EXECUTABLE_OUTPUT_PATH}/rpmsg_str_echo_example.elf ${EXECUTABLE_OUTPUT_PATH}/rpmsg_str_echo_example.bin)
diff --git a/examples/vf6xx_colibri_m4/demo_apps/rpmsg/str_echo/armgcc/build_all.bat b/examples/vf6xx_colibri_m4/demo_apps/rpmsg/str_echo/armgcc/build_all.bat
new file mode 100755
index 0000000..0cf721f
--- /dev/null
+++ b/examples/vf6xx_colibri_m4/demo_apps/rpmsg/str_echo/armgcc/build_all.bat
@@ -0,0 +1,5 @@
+cmake -DCMAKE_TOOLCHAIN_FILE="../../../../../../tools/cmake_toolchain_files/armgcc.cmake" -G "MinGW Makefiles" -DCMAKE_BUILD_TYPE=Debug  .
+mingw32-make -j4
+cmake -DCMAKE_TOOLCHAIN_FILE="../../../../../../tools/cmake_toolchain_files/armgcc.cmake" -G "MinGW Makefiles" -DCMAKE_BUILD_TYPE=Release  .
+mingw32-make -j4
+pause
diff --git a/examples/vf6xx_colibri_m4/demo_apps/rpmsg/str_echo/armgcc/build_all.sh b/examples/vf6xx_colibri_m4/demo_apps/rpmsg/str_echo/armgcc/build_all.sh
new file mode 100755
index 0000000..3827529
--- /dev/null
+++ b/examples/vf6xx_colibri_m4/demo_apps/rpmsg/str_echo/armgcc/build_all.sh
@@ -0,0 +1,5 @@
+#!/bin/sh
+cmake -DCMAKE_TOOLCHAIN_FILE="../../../../../../tools/cmake_toolchain_files/armgcc.cmake" -G "Unix Makefiles" -DCMAKE_BUILD_TYPE=Debug  .
+make -j4
+cmake -DCMAKE_TOOLCHAIN_FILE="../../../../../../tools/cmake_toolchain_files/armgcc.cmake" -G "Unix Makefiles" -DCMAKE_BUILD_TYPE=Release  .
+make -j4
diff --git a/examples/vf6xx_colibri_m4/demo_apps/rpmsg/str_echo/armgcc/build_debug.bat b/examples/vf6xx_colibri_m4/demo_apps/rpmsg/str_echo/armgcc/build_debug.bat
new file mode 100755
index 0000000..e9ccfdd
--- /dev/null
+++ b/examples/vf6xx_colibri_m4/demo_apps/rpmsg/str_echo/armgcc/build_debug.bat
@@ -0,0 +1,3 @@
+cmake -DCMAKE_TOOLCHAIN_FILE="../../../../../../tools/cmake_toolchain_files/armgcc.cmake" -G "MinGW Makefiles" -DCMAKE_BUILD_TYPE=Debug  .
+mingw32-make -j4
+pause
diff --git a/examples/vf6xx_colibri_m4/demo_apps/rpmsg/str_echo/armgcc/build_debug.sh b/examples/vf6xx_colibri_m4/demo_apps/rpmsg/str_echo/armgcc/build_debug.sh
new file mode 100755
index 0000000..effd076
--- /dev/null
+++ b/examples/vf6xx_colibri_m4/demo_apps/rpmsg/str_echo/armgcc/build_debug.sh
@@ -0,0 +1,3 @@
+#!/bin/sh
+cmake -DCMAKE_TOOLCHAIN_FILE="../../../../../../tools/cmake_toolchain_files/armgcc.cmake" -G "Unix Makefiles" -DCMAKE_BUILD_TYPE=Debug  .
+make -j4
diff --git a/examples/vf6xx_colibri_m4/demo_apps/rpmsg/str_echo/armgcc/build_release.bat b/examples/vf6xx_colibri_m4/demo_apps/rpmsg/str_echo/armgcc/build_release.bat
new file mode 100755
index 0000000..0759349
--- /dev/null
+++ b/examples/vf6xx_colibri_m4/demo_apps/rpmsg/str_echo/armgcc/build_release.bat
@@ -0,0 +1,3 @@
+cmake -DCMAKE_TOOLCHAIN_FILE="../../../../../../tools/cmake_toolchain_files/armgcc.cmake" -G "MinGW Makefiles" -DCMAKE_BUILD_TYPE=Release  .
+mingw32-make -j4
+pause
diff --git a/examples/vf6xx_colibri_m4/demo_apps/rpmsg/str_echo/armgcc/build_release.sh b/examples/vf6xx_colibri_m4/demo_apps/rpmsg/str_echo/armgcc/build_release.sh
new file mode 100755
index 0000000..a12067d
--- /dev/null
+++ b/examples/vf6xx_colibri_m4/demo_apps/rpmsg/str_echo/armgcc/build_release.sh
@@ -0,0 +1,3 @@
+#!/bin/sh
+cmake -DCMAKE_TOOLCHAIN_FILE="../../../../../../tools/cmake_toolchain_files/armgcc.cmake" -G "Unix Makefiles" -DCMAKE_BUILD_TYPE=Release  .
+make -j4
diff --git a/examples/vf6xx_colibri_m4/demo_apps/rpmsg/str_echo/armgcc/clean.bat b/examples/vf6xx_colibri_m4/demo_apps/rpmsg/str_echo/armgcc/clean.bat
new file mode 100755
index 0000000..ffea088
--- /dev/null
+++ b/examples/vf6xx_colibri_m4/demo_apps/rpmsg/str_echo/armgcc/clean.bat
@@ -0,0 +1,3 @@
+RD /s /Q Debug Release CMakeFiles
+DEL /s /Q /F Makefile cmake_install.cmake CMakeCache.txt
+pause
diff --git a/examples/vf6xx_colibri_m4/demo_apps/rpmsg/str_echo/armgcc/clean.sh b/examples/vf6xx_colibri_m4/demo_apps/rpmsg/str_echo/armgcc/clean.sh
new file mode 100755
index 0000000..795ad87
--- /dev/null
+++ b/examples/vf6xx_colibri_m4/demo_apps/rpmsg/str_echo/armgcc/clean.sh
@@ -0,0 +1,3 @@
+#!/bin/sh
+rm -rf debug release CMakeFiles
+rm -rf Makefile cmake_install.cmake CMakeCache.txt
diff --git a/examples/vf6xx_colibri_m4/demo_apps/rpmsg/str_echo/rpmsg_str_echo.c b/examples/vf6xx_colibri_m4/demo_apps/rpmsg/str_echo/rpmsg_str_echo.c
new file mode 100644
index 0000000..38c6c11
--- /dev/null
+++ b/examples/vf6xx_colibri_m4/demo_apps/rpmsg/str_echo/rpmsg_str_echo.c
@@ -0,0 +1,207 @@
+/*
+ * Copyright (c) 2016, Toradex AG
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ *
+ * o Redistributions of source code must retain the above copyright notice, this list
+ *   of conditions and the following disclaimer.
+ *
+ * o Redistributions in binary form must reproduce the above copyright notice, this
+ *   list of conditions and the following disclaimer in the documentation and/or
+ *   other materials provided with the distribution.
+ *
+ * o Neither the name of Freescale Semiconductor, Inc. nor the names of its
+ *   contributors may be used to endorse or promote products derived from this
+ *   software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
+ * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <stdio.h>
+#include <errno.h>
+
+#include "FreeRTOS.h"
+#include "task.h"
+#include "semphr.h"
+#include "string.h"
+#include "assert.h"
+#include "rpmsg/rpmsg.h"
+#include "plat_porting.h"
+#include <ccm_vf6xx.h>
+#include "debug_console_vf6xx.h"
+
+#define MAX_STRING_SIZE 496         /* Maximum size to hold the data A7 gives */
+
+/*
+ * For the most worst case, master will send 3 consecutive messages which remote
+ * do not process.
+ * The synchronization between remote and master is that each time endpoint callback
+ * is called, the MU Receive interrupt is temperorily disabled. Until the next time
+ * remote consumes the message, the interrupt will not be enabled again.
+ * When the interrupt is not enabled, Master can not send the notify, it will blocks
+ * there and can not send further message.
+ * In the worst case, master send the first message, it triggles the ISR in remote
+ * side, remote ISR clear the MU status bit so master can send the second message
+ * and notify again, master can continue to send the 3rd message but will blocks
+ * when trying to notify. Meanwhile, remote side is still in the first ISR which
+ * has a loop to receive all the 3 messages.
+ * Master is blocked and can not send the 4th message, remote side ISR copies all
+ * this 3 message to app buffer and informs the app layer to consume them. After
+ * a message is consumed, the ISR is enabled again and the second notify is received.
+ * This unblocks the master to complete the 3rd notify and send the next message.
+ * The 4th notify will not complete until remote consumes the second message.
+ * The situation goes on and we can see application layer need a maximum size 3
+ * buffer to hold the unconsumed messages. STRING_BUFFER_CNT is therefore set to 3
+ */
+#define STRING_BUFFER_CNT	3
+
+/*
+ * APP decided interrupt priority
+ */
+#define APP_MSCM_IRQ_PRIORITY	3
+
+/* Internal functions */
+static void rpmsg_channel_created(struct rpmsg_channel *rp_chnl);
+static void rpmsg_channel_deleted(struct rpmsg_channel *rp_chnl);
+static void rpmsg_read_cb(struct rpmsg_channel *, void *, int, void *, unsigned long);
+
+/* Globals */
+static struct remote_device *rdev;
+static struct rpmsg_channel *app_chnl;
+static char strVar[STRING_BUFFER_CNT][MAX_STRING_SIZE + 1];
+static uint8_t app_idx = 0;
+static uint8_t handler_idx = 0;
+static SemaphoreHandle_t app_sema;
+
+/*!
+ * @brief A basic RPMSG task
+ */
+void StrEchoTask(void *pvParameters)
+{
+    printf("RPMSG String Echo Demo...\r\n");
+
+    app_sema = xSemaphoreCreateCounting(STRING_BUFFER_CNT + 1, 0);
+
+    printf("RPMSG Init as Remote\r\n");
+    /*
+    * RPMSG Init as REMOTE
+    */
+    rpmsg_init(0, &rdev, rpmsg_channel_created, rpmsg_channel_deleted, rpmsg_read_cb, RPMSG_MASTER);
+
+    /*
+    * rpmsg_channel_created will post the first semaphore
+    */
+    xSemaphoreTake(app_sema, portMAX_DELAY);
+    printf("Name service handshake is done, M4 has setup a rpmsg channel [%d ---> %d]\r\n", app_chnl->src, app_chnl->dst);
+
+
+    /*
+    * pingpong demo loop
+    */
+    for (;;) {
+	xSemaphoreTake(app_sema, portMAX_DELAY);
+	/*
+	* Take from next app string buffer
+	*/
+	if ((strlen(strVar[app_idx]) == 2) && (strVar[app_idx][0] == 0xd) && (strVar[app_idx][1] == 0xa))
+	    printf("Get New Line From A7 From Slot %d\r\n", app_idx);
+	else
+	    printf("Get Message From A7 : \"%s\" [len : %d] from slot %d\r\n", strVar[app_idx], strlen(strVar[app_idx]), app_idx);
+
+	/*
+	* echo back
+	*/
+	rpmsg_send(app_chnl, (void*)strVar[app_idx], strlen(strVar[app_idx]));
+	app_idx = (app_idx + 1) % STRING_BUFFER_CNT;
+	/*
+	* once a message is consumed, the MSCM receive interrupt can be enabled
+	* again
+	*/
+	platform_interrupt_enable();
+    }
+}
+
+int main(void)
+{
+    /* Init Clock Control and UART */
+    CCM_GetClocks();
+    CCM_ControlGate(ccmCcgrGateUart2, ccmClockNeededAll);
+
+    vf6xx_DbgConsole_Init(UART2, ccmIpgBusClk, 115200);
+
+    printf("Starting RPMSG PingPong Demo...\r\n");
+
+    /*
+    * Prepare for the MSCM Interrupt
+    * MSCM must be initialized before rpmsg init is called
+    */
+    platform_interrupt_enable();
+    NVIC_SetPriority(CPU2CPU_INT0_IRQ, APP_MSCM_IRQ_PRIORITY);
+    NVIC_SetPriority(CPU2CPU_INT1_IRQ, APP_MSCM_IRQ_PRIORITY);
+
+
+    // Create a demo task which will print Hello world and echo user's input.
+    xTaskCreate(StrEchoTask, "String Echo Task", configMINIMAL_STACK_SIZE,
+		NULL, tskIDLE_PRIORITY+1, NULL);
+
+    // Start FreeRTOS scheduler.
+    vTaskStartScheduler();
+
+    // Should never reach this point.
+    while (true);
+}
+
+/* rpmsg_rx_callback will call into this for a channel creation event*/
+static void rpmsg_channel_created(struct rpmsg_channel *rp_chnl)
+{
+    /*
+      * we should give the created rp_chnl handler to app layer
+      */
+    app_chnl = rp_chnl;
+
+    /*
+      * sync to application layer
+      */
+    xSemaphoreGiveFromISR(app_sema, NULL);
+}
+
+static void rpmsg_channel_deleted(struct rpmsg_channel *rp_chnl)
+{
+    rpmsg_destroy_ept(rp_chnl->rp_ept);
+}
+
+static void rpmsg_read_cb(struct rpmsg_channel *rp_chnl, void *data, int len,
+                void * priv, unsigned long src)
+{
+    /*
+    * Temperorily Disable MSCM Receive Interrupt to avoid master
+    * sending too many messages and remote will fail to keep pace
+    * to consume
+    */
+    platform_interrupt_disable();
+    /*
+    * Copy to next app string buffer
+    */
+    assert(len <= MAX_STRING_SIZE);
+    memcpy((void*)strVar[handler_idx], data, len);
+    /*
+    * Add trailing '\0'
+    */
+    strVar[handler_idx][len] = 0;
+    handler_idx = (handler_idx + 1) % STRING_BUFFER_CNT;
+    xSemaphoreGiveFromISR(app_sema, NULL);
+}
+/*******************************************************************************
+ * EOF
+ ******************************************************************************/