initial commit of Low Power Demo

Signed-off-by: Stefan Agner <stefan.agner@toradex.com>

13 files changed, 404 insertions, 0 deletions

diff --git a/examples/imx7_colibri_m4/low_power_demo/armgcc/CMakeLists.txt b/examples/imx7_colibri_m4/low_power_demo/armgcc/CMakeLists.txt
new file mode 100644
index 0000000..098ce0d
--- /dev/null
+++ b/examples/imx7_colibri_m4/low_power_demo/armgcc/CMakeLists.txt
@@ -0,0 +1,137 @@
+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})
+SET(BspRootDirPath ${CMAKE_CURRENT_SOURCE_DIR}/../../../..)
+
+# DEBUG LINK FILE
+set(CMAKE_EXE_LINKER_FLAGS_DEBUG "${CMAKE_EXE_LINKER_FLAGS_DEBUG} -T${BspRootDirPath}/platform/devices/MCIMX7D/linker/gcc/MCIMX7D_M4_tcm.ld  -static")
+
+# RELEASE LINK FILE
+set(CMAKE_EXE_LINKER_FLAGS_RELEASE "${CMAKE_EXE_LINKER_FLAGS_RELEASE} -T${BspRootDirPath}/platform/devices/MCIMX7D/linker/gcc/MCIMX7D_M4_tcm.ld  -static")
+
+# DEBUG ASM FLAGS
+SET(CMAKE_ASM_FLAGS_DEBUG "${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  -mapcs  -std=gnu99")
+
+# DEBUG C FLAGS
+SET(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -g  -O0  -mcpu=cortex-m4  -mfloat-abi=hard  -mfpu=fpv4-sp-d16  -mthumb  -MMD  -MP  -Wall  -fno-common  -ffunction-sections  -fdata-sections  -ffreestanding  -fno-builtin  -mapcs  -std=gnu99")
+
+# DEBUG LD FLAGS
+SET(CMAKE_EXE_LINKER_FLAGS_DEBUG "${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")
+
+# RELEASE ASM FLAGS
+SET(CMAKE_ASM_FLAGS_RELEASE "${CMAKE_ASM_FLAGS_RELEASE} -mcpu=cortex-m4  -mfloat-abi=hard  -mfpu=fpv4-sp-d16  -mthumb  -Wall  -fno-common  -ffunction-sections  -fdata-sections  -ffreestanding  -fno-builtin  -mapcs  -std=gnu99")
+
+# RELEASE C FLAGS
+SET(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} -Os  -mcpu=cortex-m4  -mfloat-abi=hard  -mfpu=fpv4-sp-d16  -mthumb  -MMD  -MP  -Wall  -fno-common  -ffunction-sections  -fdata-sections  -ffreestanding  -fno-builtin  -mapcs  -std=gnu99")
+
+# RELEASE LD FLAGS
+SET(CMAKE_EXE_LINKER_FLAGS_RELEASE "${CMAKE_EXE_LINKER_FLAGS_RELEASE} -mcpu=cortex-m4  -mfloat-abi=hard  -mfpu=fpv4-sp-d16  --specs=nano.specs  -lm  -Wall  -fno-common  -ffunction-sections  -fdata-sections  -ffreestanding  -fno-builtin  -Os  -mthumb  -mapcs  -Xlinker --gc-sections  -Xlinker -static  -Xlinker -z  -Xlinker muldefs")
+
+# ASM MACRO
+SET(CMAKE_ASM_FLAGS_DEBUG "${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_MCIMX7D_M4")
+SET(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE}  -D__NDEBUG")
+SET(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE}  -DCPU_MCIMX7D_M4")
+
+# CXX MACRO
+
+# INCLUDE_DIRECTORIES
+IF(CMAKE_BUILD_TYPE MATCHES Debug)
+    INCLUDE_DIRECTORIES(${ProjDirPath}/../..)
+    INCLUDE_DIRECTORIES(${BspRootDirPath}/platform/CMSIS/Include)
+    INCLUDE_DIRECTORIES(${BspRootDirPath}/platform/devices)
+    INCLUDE_DIRECTORIES(${BspRootDirPath}/platform/devices/MCIMX7D/include)
+    INCLUDE_DIRECTORIES(${BspRootDirPath}/platform/devices/MCIMX7D/startup)
+    INCLUDE_DIRECTORIES(${BspRootDirPath}/platform/drivers/inc)
+    INCLUDE_DIRECTORIES(${BspRootDirPath}/platform/utilities/inc)
+    INCLUDE_DIRECTORIES(${BspRootDirPath}/../..)
+ELSEIF(CMAKE_BUILD_TYPE MATCHES Release)
+    INCLUDE_DIRECTORIES(${ProjDirPath}/../..)
+    INCLUDE_DIRECTORIES(${BspRootDirPath}/platform/CMSIS/Include)
+    INCLUDE_DIRECTORIES(${BspRootDirPath}/platform/devices)
+    INCLUDE_DIRECTORIES(${BspRootDirPath}/platform/devices/MCIMX7D/include)
+    INCLUDE_DIRECTORIES(${BspRootDirPath}/platform/devices/MCIMX7D/startup)
+    INCLUDE_DIRECTORIES(${BspRootDirPath}/platform/drivers/inc)
+    INCLUDE_DIRECTORIES(${BspRootDirPath}/platform/utilities/inc)
+    INCLUDE_DIRECTORIES(${ProjDirPath}/../..)
+ENDIF()
+
+# ADD_EXECUTABLE
+ADD_EXECUTABLE(low_power_demo
+    "${BspRootDirPath}/platform/devices/MCIMX7D/startup/gcc/startup_MCIMX7D_M4.S"
+    "${BspRootDirPath}/platform/utilities/src/debug_console_imx.c"
+    "${BspRootDirPath}/platform/utilities/inc/debug_console_imx.h"
+    "${BspRootDirPath}/platform/utilities/src/print_scan.c"
+    "${BspRootDirPath}/platform/utilities/src/print_scan.h"
+    "${BspRootDirPath}/platform/drivers/inc/ccm_analog_imx7d.h"
+    "${BspRootDirPath}/platform/drivers/inc/ccm_imx7d.h"
+    "${BspRootDirPath}/platform/drivers/inc/lmem.h"
+    "${BspRootDirPath}/platform/drivers/inc/rdc.h"
+    "${BspRootDirPath}/platform/drivers/inc/rdc_defs_imx7d.h"
+    "${BspRootDirPath}/platform/drivers/inc/wdog_imx.h"
+    "${BspRootDirPath}/platform/drivers/src/ccm_analog_imx7d.c"
+    "${BspRootDirPath}/platform/drivers/src/ccm_imx7d.c"
+    "${BspRootDirPath}/platform/drivers/src/lmem.c"
+    "${BspRootDirPath}/platform/drivers/src/rdc.c"
+    "${BspRootDirPath}/platform/drivers/src/wdog_imx.c"
+    "${BspRootDirPath}/platform/devices/MCIMX7D/startup/system_MCIMX7D_M4.c"
+    "${BspRootDirPath}/platform/devices/MCIMX7D/startup/system_MCIMX7D_M4.h"
+    "${ProjDirPath}/../../pin_mux.c"
+    "${ProjDirPath}/../../pin_mux.h"
+    "${ProjDirPath}/../../board.c"
+    "${ProjDirPath}/../../board.h"
+    "${ProjDirPath}/../../clock_freq.c"
+    "${ProjDirPath}/../../clock_freq.h"
+    "${ProjDirPath}/../hardware_init.c"
+    "${ProjDirPath}/../gpio_pins.c"
+    "${ProjDirPath}/../gpio_pins.h"
+    "${ProjDirPath}/../main.c"
+    "${BspRootDirPath}/platform/drivers/src/gpio_imx.c"
+    "${BspRootDirPath}/platform/drivers/inc/gpio_imx.h"
+    "${BspRootDirPath}/platform/drivers/src/uart_imx.c"
+    "${BspRootDirPath}/platform/drivers/inc/uart_imx.h"
+)
+SET_TARGET_PROPERTIES(low_power_demo PROPERTIES OUTPUT_NAME "low_power_demo.elf")
+
+TARGET_LINK_LIBRARIES(low_power_demo -Wl,--start-group)
+# LIBRARIES
+IF(CMAKE_BUILD_TYPE MATCHES Debug)
+ELSEIF(CMAKE_BUILD_TYPE MATCHES Release)
+ENDIF()
+
+# SYSTEM LIBRARIES
+TARGET_LINK_LIBRARIES(low_power_demo m)
+TARGET_LINK_LIBRARIES(low_power_demo c)
+TARGET_LINK_LIBRARIES(low_power_demo gcc)
+TARGET_LINK_LIBRARIES(low_power_demo nosys)
+TARGET_LINK_LIBRARIES(low_power_demo -Wl,--end-group)
+
+# MAP FILE
+SET(CMAKE_EXE_LINKER_FLAGS_DEBUG "${CMAKE_EXE_LINKER_FLAGS_DEBUG}  -Xlinker -Map=debug/low_power_demo.map")
+SET(CMAKE_EXE_LINKER_FLAGS_RELEASE "${CMAKE_EXE_LINKER_FLAGS_RELEASE}  -Xlinker -Map=release/low_power_demo.map")
+
+# BIN AND HEX
+ADD_CUSTOM_COMMAND(TARGET low_power_demo POST_BUILD COMMAND ${CMAKE_OBJCOPY} -Oihex ${EXECUTABLE_OUTPUT_PATH}/low_power_demo.elf ${EXECUTABLE_OUTPUT_PATH}/low_power_demo.hex)
+ADD_CUSTOM_COMMAND(TARGET low_power_demo POST_BUILD COMMAND ${CMAKE_OBJCOPY} -Obinary ${EXECUTABLE_OUTPUT_PATH}/low_power_demo.elf ${EXECUTABLE_OUTPUT_PATH}/low_power_demo.bin)
diff --git a/examples/imx7_colibri_m4/low_power_demo/armgcc/build_all.bat b/examples/imx7_colibri_m4/low_power_demo/armgcc/build_all.bat
new file mode 100644
index 0000000..6d41d86
--- /dev/null
+++ b/examples/imx7_colibri_m4/low_power_demo/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/imx7_colibri_m4/low_power_demo/armgcc/build_all.sh b/examples/imx7_colibri_m4/low_power_demo/armgcc/build_all.sh
new file mode 100755
index 0000000..98ff335
--- /dev/null
+++ b/examples/imx7_colibri_m4/low_power_demo/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/imx7_colibri_m4/low_power_demo/armgcc/build_debug.bat b/examples/imx7_colibri_m4/low_power_demo/armgcc/build_debug.bat
new file mode 100644
index 0000000..bf3b902
--- /dev/null
+++ b/examples/imx7_colibri_m4/low_power_demo/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/imx7_colibri_m4/low_power_demo/armgcc/build_debug.sh b/examples/imx7_colibri_m4/low_power_demo/armgcc/build_debug.sh
new file mode 100755
index 0000000..571868b
--- /dev/null
+++ b/examples/imx7_colibri_m4/low_power_demo/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/imx7_colibri_m4/low_power_demo/armgcc/build_release.bat b/examples/imx7_colibri_m4/low_power_demo/armgcc/build_release.bat
new file mode 100644
index 0000000..e229a83
--- /dev/null
+++ b/examples/imx7_colibri_m4/low_power_demo/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/imx7_colibri_m4/low_power_demo/armgcc/build_release.sh b/examples/imx7_colibri_m4/low_power_demo/armgcc/build_release.sh
new file mode 100755
index 0000000..035ce4e
--- /dev/null
+++ b/examples/imx7_colibri_m4/low_power_demo/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/imx7_colibri_m4/low_power_demo/armgcc/clean.bat b/examples/imx7_colibri_m4/low_power_demo/armgcc/clean.bat
new file mode 100644
index 0000000..ffea088
--- /dev/null
+++ b/examples/imx7_colibri_m4/low_power_demo/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/imx7_colibri_m4/low_power_demo/armgcc/clean.sh b/examples/imx7_colibri_m4/low_power_demo/armgcc/clean.sh
new file mode 100755
index 0000000..795ad87
--- /dev/null
+++ b/examples/imx7_colibri_m4/low_power_demo/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/imx7_colibri_m4/low_power_demo/gpio_pins.c b/examples/imx7_colibri_m4/low_power_demo/gpio_pins.c
new file mode 100644
index 0000000..cc1748d
--- /dev/null
+++ b/examples/imx7_colibri_m4/low_power_demo/gpio_pins.c
@@ -0,0 +1,44 @@
+/*
+ * Copyright (c) 2015, Freescale Semiconductor, Inc.
+ * 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 <assert.h>
+#include "gpio_pins.h"
+
+void configure_gpio_pin(gpio_config_t *config)
+{
+    assert(config);
+
+    *(config->muxReg) = config->muxConfig;
+    *(config->padReg) = config->padConfig;
+}
+
+/*******************************************************************************
+ * EOF
+ ******************************************************************************/
diff --git a/examples/imx7_colibri_m4/low_power_demo/gpio_pins.h b/examples/imx7_colibri_m4/low_power_demo/gpio_pins.h
new file mode 100644
index 0000000..aea0d55
--- /dev/null
+++ b/examples/imx7_colibri_m4/low_power_demo/gpio_pins.h
@@ -0,0 +1,58 @@
+/*
+ * Copyright (c) 2015, Freescale Semiconductor, Inc.
+ * 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.
+ */
+
+#ifndef __GPIO_PINS_H__
+#define __GPIO_PINS_H__
+
+#include "device_imx.h"
+
+/*! @brief i.MX GPIO initialize structure. */
+typedef struct _gpio_config
+{
+    const char        *name;
+    __IO  uint32_t    *muxReg;
+    uint32_t           muxConfig;
+    __IO  uint32_t    *padReg;
+    uint32_t           padConfig;
+    GPIO_Type         *base;
+    uint32_t           pin;
+} gpio_config_t;
+
+#if defined(__cplusplus)
+extern "C" {
+#endif /* __cplusplus */
+
+/*! @brief Configure specific GPIO pin */
+void configure_gpio_pin(gpio_config_t *config);
+
+#endif /* __GPIO_PINS_H__ */
+/*******************************************************************************
+ * EOF
+ ******************************************************************************/
diff --git a/examples/imx7_colibri_m4/low_power_demo/hardware_init.c b/examples/imx7_colibri_m4/low_power_demo/hardware_init.c
new file mode 100644
index 0000000..0b11809
--- /dev/null
+++ b/examples/imx7_colibri_m4/low_power_demo/hardware_init.c
@@ -0,0 +1,53 @@
+/*
+ * Copyright (c) 2015, Freescale Semiconductor, Inc.
+ * 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 "gpio_pins.h"
+#include "board.h"
+
+void hardware_init(void)
+{
+    /* Board specific RDC settings */
+    BOARD_RdcInit();
+    /* Board specific clock settings */
+    BOARD_ClockInit();
+    /* initialize debug uart */
+    dbg_uart_init();
+
+    /* In this demo, we need to share board GPIO without RDC SEMAPHORE */
+    RDC_SetPdapAccess(RDC, rdcPdapGpio1, 0xFF, false, false);
+    RDC_SetPdapAccess(RDC, rdcPdapGpio4, 0xFF, false, false);
+
+    /* Enable gpio clock gate */
+    CCM_ControlGate(CCM, BOARD_GPIO_KEY_CCM_CCGR, ccmClockNeededRunWait);
+}
+
+/*******************************************************************************
+ * EOF
+ ******************************************************************************/
diff --git a/examples/imx7_colibri_m4/low_power_demo/main.c b/examples/imx7_colibri_m4/low_power_demo/main.c
new file mode 100644
index 0000000..71d0052
--- /dev/null
+++ b/examples/imx7_colibri_m4/low_power_demo/main.c
@@ -0,0 +1,84 @@
+/*
+ * Copyright (c) 2017, Toradex
+ * 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 "board.h"
+#include "gpio_pins.h"
+#include "gpio_imx.h"
+#include "debug_console_imx.h"
+
+#define GPIO_INTERRUPT         (1)
+#define GPIO_POLLING           (0)
+#define GPIO_DEBOUNCE_DELAY    (100000)
+
+gpio_config_t gpioLcdA0 = {
+	.name = "LCD A0 [SSPRXD]",
+	.muxReg = &IOMUXC_SW_MUX_CTL_PAD_I2C1_SCL, /* GPIO4 IO08 */
+	.muxConfig = 0,
+	.padReg = &IOMUXC_SW_PAD_CTL_PAD_I2C1_SCL,
+	.padConfig = 0,
+	.base = GPIO4,
+	.pin = 8,
+};
+
+/*!
+ * @brief Initialize LCD display
+ */
+static void LCD_Init(void)
+{
+	configure_gpio_pin(&gpioLcdA0);
+
+	gpio_init_config_t lcdA0InitConfig = {
+		.pin = gpioLcdA0.pin,
+		.direction = gpioDigitalOutput,
+		.interruptMode = gpioNoIntmode
+	};
+	GPIO_Init(gpioLcdA0.base, &lcdA0InitConfig);
+
+
+}
+
+/*!
+ * @brief Main entry point
+ */
+int main(void)
+{
+	/* hardware initialiize, include RDC, IOMUX and UART debug */
+	hardware_init();
+	PRINTF("\n\r=> Low Power Demo\n\r");
+
+	/* GPIO module initialize, configure "LED" as output and button as interrupt mode. */
+	LCD_Init();
+
+	while(true);
+
+	return 0;
+}
+