examples: gpio_bank2_imx: gpio example using just GPIO2

This example control a led and a button just using GPIOs from
the bank 2 (GPIO2).

Signed-off-by: Raul Munoz <raul.munoz@toradex.com>
Signed-off-by: Stefan Agner <stefan.agner@toradex.com>

13 files changed, 612 insertions, 0 deletions

diff --git a/examples/imx7_colibri_m4/driver_examples/gpio_bank2_imx/armgcc/CMakeLists.txt b/examples/imx7_colibri_m4/driver_examples/gpio_bank2_imx/armgcc/CMakeLists.txt
new file mode 100644
index 0000000..a308638
--- /dev/null
+++ b/examples/imx7_colibri_m4/driver_examples/gpio_bank2_imx/armgcc/CMakeLists.txt
@@ -0,0 +1,132 @@
+INCLUDE(CMakeForceCompiler)
+
+SET(ProjectName gpio_imx)
+PROJECT(${ProjectName})
+
+# 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)
+
+SET(CMAKE_SKIP_INSTALL_RULES TRUE)
+
+# CURRENT DIRECTORY
+SET(ProjDirPath ${CMAKE_CURRENT_SOURCE_DIR})
+SET(BspRootDirPath ${CMAKE_CURRENT_SOURCE_DIR}/../../../../..)
+
+# RELEASE/DEBUG LINK FILE
+set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -T MCIMX7D_M4_ocram.ld -static -L ${BspRootDirPath}/platform/devices/MCIMX7D/linker/gcc/")
+
+# DEFAULT ASM FLAGS
+SET(CMAKE_ASM_FLAGS "${CMAKE_ASM_FLAGS} -mcpu=cortex-m4  -mfloat-abi=hard  -mfpu=fpv4-sp-d16  -mthumb  -Wall  -fno-common  -ffunction-sections  -fdata-sections  -ffreestanding  -fno-builtin  -mapcs  -std=gnu99")
+
+# DEFAULT C FLAGS
+SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -mcpu=cortex-m4  -mfloat-abi=hard  -mfpu=fpv4-sp-d16  -mthumb  -MMD  -MP  -Wall  -fno-common  -ffunction-sections  -fdata-sections  -ffreestanding  -fno-builtin  -mapcs  -std=gnu99")
+
+# DEFAULT LD FLAGS
+SET(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -mcpu=cortex-m4 -mfloat-abi=hard  -mfpu=fpv4-sp-d16  --specs=nano.specs  -Wall  -fno-common -ffunction-sections  -fdata-sections  -ffreestanding  -fno-builtin  -mthumb -mapcs  -Xlinker --gc-sections  -Xlinker -static  -Xlinker -z -z max-page-size=4096 -Xlinker muldefs")
+
+# DEBUG ASM FLAGS
+SET(CMAKE_ASM_FLAGS_DEBUG "${CMAKE_ASM_FLAGS_DEBUG} -g")
+
+# DEBUG C FLAGS
+SET(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -g -O0")
+
+# DEBUG LD FLAGS
+SET(CMAKE_EXE_LINKER_FLAGS_DEBUG "${CMAKE_EXE_LINKER_FLAGS_DEBUG} -g")
+
+# RELEASE C FLAGS
+SET(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} -Os")
+
+# ASM MACRO
+SET(CMAKE_ASM_FLAGS_DEBUG "${CMAKE_ASM_FLAGS_DEBUG}  -D__DEBUG")
+
+# C MACRO
+SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -DCPU_MCIMX7D_M4")
+SET(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG}  -D__DEBUG")
+SET(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE}  -D__NDEBUG")
+
+# INCLUDE_DIRECTORIES
+INCLUDE_DIRECTORIES(${ProjDirPath}/..)
+INCLUDE_DIRECTORIES(${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)
+
+
+# ADD_EXECUTABLE
+ADD_EXECUTABLE(${ProjectName}
+    "${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/src/rdc_semaphore.c"
+    "${BspRootDirPath}/platform/drivers/inc/rdc_semaphore.h"
+    "${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"
+    "${BspRootDirPath}/platform/devices/MCIMX7D/startup/system_MCIMX7D_M4.h"
+    "${BspRootDirPath}/platform/drivers/src/gpio_imx.c"
+    "${BspRootDirPath}/platform/drivers/inc/gpio_imx.h"
+    "${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"
+    "${ProjDirPath}/../gpio_ctrl.c"
+    "${ProjDirPath}/../gpio_ctrl.h"
+    "${ProjDirPath}/../main.c"
+    "${BspRootDirPath}/platform/drivers/src/uart_imx.c"
+    "${BspRootDirPath}/platform/drivers/inc/uart_imx.h"
+)
+SET_TARGET_PROPERTIES(${ProjectName} PROPERTIES OUTPUT_NAME "${ProjectName}.elf")
+
+TARGET_LINK_LIBRARIES(${ProjectName} -Wl,--start-group)
+# LIBRARIES
+IF(CMAKE_BUILD_TYPE MATCHES Debug)
+ELSEIF(CMAKE_BUILD_TYPE MATCHES Release)
+ENDIF()
+
+# SYSTEM LIBRARIES
+TARGET_LINK_LIBRARIES(${ProjectName} m)
+TARGET_LINK_LIBRARIES(${ProjectName} c)
+TARGET_LINK_LIBRARIES(${ProjectName} gcc)
+TARGET_LINK_LIBRARIES(${ProjectName} nosys)
+TARGET_LINK_LIBRARIES(${ProjectName} -Wl,--end-group)
+
+# MAP FILE
+SET(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS}  -Xlinker -Map=${ProjectName}.map")
+
+# BIN AND HEX
+ADD_CUSTOM_COMMAND(TARGET ${ProjectName} POST_BUILD COMMAND ${CMAKE_OBJCOPY} -Oihex ${EXECUTABLE_OUTPUT_PATH}/${ProjectName}.elf ${EXECUTABLE_OUTPUT_PATH}/${ProjectName}.hex)
+# bin does not support sparse memory area, which our default linker file uses...
+#ADD_CUSTOM_COMMAND(TARGET ${ProjectName} POST_BUILD COMMAND ${CMAKE_OBJCOPY} -Obinary ${EXECUTABLE_OUTPUT_PATH}/${ProjectName}.elf ${EXECUTABLE_OUTPUT_PATH}/${ProjectName}.bin)
diff --git a/examples/imx7_colibri_m4/driver_examples/gpio_bank2_imx/armgcc/build_all.bat b/examples/imx7_colibri_m4/driver_examples/gpio_bank2_imx/armgcc/build_all.bat
new file mode 100644
index 0000000..426a29f
--- /dev/null
+++ b/examples/imx7_colibri_m4/driver_examples/gpio_bank2_imx/armgcc/build_all.bat
@@ -0,0 +1,7 @@
+cd release
+call build_release.bat
+cd ..
+cd debug
+call build_debug.bat
+cd ..
+pause
diff --git a/examples/imx7_colibri_m4/driver_examples/gpio_bank2_imx/armgcc/build_all.sh b/examples/imx7_colibri_m4/driver_examples/gpio_bank2_imx/armgcc/build_all.sh
new file mode 100755
index 0000000..99e6267
--- /dev/null
+++ b/examples/imx7_colibri_m4/driver_examples/gpio_bank2_imx/armgcc/build_all.sh
@@ -0,0 +1,7 @@
+#!/bin/sh
+cd debug/
+./build_debug.sh
+cd ..
+cd release/
+./build_release.sh
+cd ..
diff --git a/examples/imx7_colibri_m4/driver_examples/gpio_bank2_imx/armgcc/clean.bat b/examples/imx7_colibri_m4/driver_examples/gpio_bank2_imx/armgcc/clean.bat
new file mode 100644
index 0000000..fc53949
--- /dev/null
+++ b/examples/imx7_colibri_m4/driver_examples/gpio_bank2_imx/armgcc/clean.bat
@@ -0,0 +1,9 @@
+cd debug
+rd /s /Q CMakeFiles/
+del /s /Q /F Makefile cmake_install.cmake CMakeCache.txt *.elf *.bin *.map *.hex
+cd ..
+cd release
+rd /s /Q CMakeFiles/
+del /s /Q /F Makefile cmake_install.cmake CMakeCache.txt *.elf *.bin *.map *.hex
+cd ..
+pause
diff --git a/examples/imx7_colibri_m4/driver_examples/gpio_bank2_imx/armgcc/clean.sh b/examples/imx7_colibri_m4/driver_examples/gpio_bank2_imx/armgcc/clean.sh
new file mode 100755
index 0000000..4b188ab
--- /dev/null
+++ b/examples/imx7_colibri_m4/driver_examples/gpio_bank2_imx/armgcc/clean.sh
@@ -0,0 +1,7 @@
+#!/bin/sh
+cd debug
+rm -rf Makefile cmake_install.cmake CMakeCache.txt CMakeFiles *.elf *.bin *.map *.hex .cproject .project
+cd ..
+cd release
+rm -rf Makefile cmake_install.cmake CMakeCache.txt CMakeFiles *.elf *.bin *.map *.hex
+cd ..
diff --git a/examples/imx7_colibri_m4/driver_examples/gpio_bank2_imx/armgcc/debug/build_debug.bat b/examples/imx7_colibri_m4/driver_examples/gpio_bank2_imx/armgcc/debug/build_debug.bat
new file mode 100644
index 0000000..434e91e
--- /dev/null
+++ b/examples/imx7_colibri_m4/driver_examples/gpio_bank2_imx/armgcc/debug/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/driver_examples/gpio_bank2_imx/armgcc/debug/build_debug.sh b/examples/imx7_colibri_m4/driver_examples/gpio_bank2_imx/armgcc/debug/build_debug.sh
new file mode 100755
index 0000000..3c169d2
--- /dev/null
+++ b/examples/imx7_colibri_m4/driver_examples/gpio_bank2_imx/armgcc/debug/build_debug.sh
@@ -0,0 +1,3 @@
+#!/bin/sh
+cmake -DCMAKE_TOOLCHAIN_FILE="../../../../../tools/cmake_toolchain_files/armgcc.cmake" -G "Eclipse CDT4 - Unix Makefiles" -DCMAKE_BUILD_TYPE=Debug  ..
+make -j4
diff --git a/examples/imx7_colibri_m4/driver_examples/gpio_bank2_imx/armgcc/release/build_release.bat b/examples/imx7_colibri_m4/driver_examples/gpio_bank2_imx/armgcc/release/build_release.bat
new file mode 100644
index 0000000..17f773a
--- /dev/null
+++ b/examples/imx7_colibri_m4/driver_examples/gpio_bank2_imx/armgcc/release/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/driver_examples/gpio_bank2_imx/armgcc/release/build_release.sh b/examples/imx7_colibri_m4/driver_examples/gpio_bank2_imx/armgcc/release/build_release.sh
new file mode 100755
index 0000000..1ad7338
--- /dev/null
+++ b/examples/imx7_colibri_m4/driver_examples/gpio_bank2_imx/armgcc/release/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/driver_examples/gpio_bank2_imx/gpio_ctrl.c b/examples/imx7_colibri_m4/driver_examples/gpio_bank2_imx/gpio_ctrl.c
new file mode 100644
index 0000000..f3d1eed
--- /dev/null
+++ b/examples/imx7_colibri_m4/driver_examples/gpio_bank2_imx/gpio_ctrl.c
@@ -0,0 +1,214 @@
+/*
+ * 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.
+ */
+/****************************************************************************
+*
+* Comments:
+*   This file contains the functions which write and read the SPI memories
+*   using the ECSPI driver in interrupt mode.
+*
+****************************************************************************/
+
+#include <stdbool.h>
+#include "gpio_pins.h"
+#include "board.h"
+#include "gpio_ctrl.h"
+#include "gpio_imx.h"
+#include "rdc_semaphore.h"
+#include "debug_console_imx.h"
+
+#define GPIO_DEBOUNCE_DELAY    (100000)
+
+
+void GPIO_Ctrl_InitSwitch1Pin()
+{
+#ifdef BOARD_GPIO_SWITCH1_CONFIG
+    /* Acquire RDC semaphore before access GPIO to avoid conflict, it's
+     * necessary when GPIO RDC is configured as Semaphore Required */
+    RDC_SEMAPHORE_Lock(BOARD_GPIO_SWITCH1_RDC_PDAP);
+    GPIO_Init(BOARD_GPIO_SWITCH1_CONFIG->base, &Switch1);
+    RDC_SEMAPHORE_Unlock(BOARD_GPIO_SWITCH1_RDC_PDAP);
+#endif
+}
+
+void GPIO_Ctrl_InitLed1Pin()
+{
+#ifdef BOARD_GPIO_LED1_CONFIG
+    /* Acquire RDC semaphore before access GPIO to avoid conflict, it's
+     * necessary when GPIO RDC is configured as Semaphore Required */
+    RDC_SEMAPHORE_Lock(BOARD_GPIO_LED1_RDC_PDAP);
+    GPIO_Init(BOARD_GPIO_LED1_CONFIG->base, &Led1);
+    RDC_SEMAPHORE_Unlock(BOARD_GPIO_LED1_RDC_PDAP);
+#endif
+}
+
+void GPIO_Ctrl_InitSwitch2Pin()
+{
+#ifdef BOARD_GPIO_SWITCH2_CONFIG
+    /* Acquire RDC semaphore before access GPIO to avoid conflict, it's
+     * necessary when GPIO RDC is configured as Semaphore Required */
+    RDC_SEMAPHORE_Lock(BOARD_GPIO_SWITCH2_RDC_PDAP);
+    GPIO_Init(BOARD_GPIO_SWITCH2_CONFIG->base, &Switch2);
+    RDC_SEMAPHORE_Unlock(BOARD_GPIO_SWITCH2_RDC_PDAP);
+#endif
+}
+
+void GPIO_Ctrl_InitLed2Pin()
+{
+#ifdef BOARD_GPIO_LED2_CONFIG
+    /* Acquire RDC semaphore before access GPIO to avoid conflict, it's
+     * necessary when GPIO RDC is configured as Semaphore Required */
+    RDC_SEMAPHORE_Lock(BOARD_GPIO_LED2_RDC_PDAP);
+    GPIO_Init(BOARD_GPIO_LED2_CONFIG->base, &Led2);
+    RDC_SEMAPHORE_Unlock(BOARD_GPIO_LED2_RDC_PDAP);
+#endif
+}
+
+void GPIO_Ctrl_Init()
+{
+    GPIO_Ctrl_InitSwitch1Pin();
+    GPIO_Ctrl_InitLed1Pin();
+    GPIO_Ctrl_InitSwitch2Pin();
+    GPIO_Ctrl_InitLed2Pin();
+}
+
+void GPIO_Ctrl_ToggleLed(gpio_config_t *boardGpioConfig, uint32_t boardGpioRdc)
+{
+    static bool onLed0 = 0;
+    onLed0 = GPIO_ReadPinOutput(boardGpioConfig->base, boardGpioConfig->pin);
+    if(onLed0 == 0)
+    {
+        RDC_SEMAPHORE_Lock(boardGpioRdc);
+        GPIO_WritePinOutput(boardGpioConfig->base,
+                            boardGpioConfig->pin, gpioPinSet);
+        RDC_SEMAPHORE_Unlock(boardGpioRdc);
+    }
+    else
+    {
+        RDC_SEMAPHORE_Lock(boardGpioRdc);
+        GPIO_WritePinOutput(boardGpioConfig->base,
+                            boardGpioConfig->pin, gpioPinClear);
+        RDC_SEMAPHORE_Unlock(boardGpioRdc);
+    }
+}
+
+void GPIO_Ctrl_ClearLed(gpio_config_t *boardGpioConfig, uint32_t boardGpioRdc)
+{
+    RDC_SEMAPHORE_Lock(boardGpioRdc);
+    GPIO_WritePinOutput(boardGpioConfig->base,
+                        boardGpioConfig->pin, gpioPinClear);
+    RDC_SEMAPHORE_Unlock(boardGpioRdc);
+}
+
+void GPIO_Ctrl_SetLed(gpio_config_t *boardGpioConfig, uint32_t boardGpioRdc)
+{
+
+    RDC_SEMAPHORE_Lock(boardGpioRdc);
+    GPIO_WritePinOutput(boardGpioConfig->base,
+                        boardGpioConfig->pin, gpioPinSet);
+    RDC_SEMAPHORE_Unlock(boardGpioRdc);
+}
+
+void GPIO_Ctrl_WriteLed(gpio_config_t *boardGpioConfig, uint32_t boardGpioRdc, uint32_t value)
+{
+    RDC_SEMAPHORE_Lock(boardGpioRdc);
+    GPIO_WritePinOutput(boardGpioConfig->base,
+                        boardGpioConfig->pin, value);
+    RDC_SEMAPHORE_Unlock(boardGpioRdc);
+}
+
+
+uint32_t GPIO_Ctrl_GetKey(gpio_config_t *boardGpioConfig)
+{
+    return GPIO_ReadPinInput(boardGpioConfig->base, boardGpioConfig->pin);
+}
+
+void GPIO_WaitKeyPressed(gpio_config_t *boardGpioConfig, uint32_t boardGpioRdc)
+{
+    uint32_t i, j, debounce;
+    /* Wait for Key Released. */
+     do
+     {
+         debounce = 0;
+         while (0 == GPIO_ReadPinInput(boardGpioConfig->base, boardGpioConfig->pin));
+
+         for (i = 0; i < 3; i++)
+         {
+             /* Delay to wait key value stable. The cycle number should be changed
+              * according to M4 Core clock frequncy.
+              */
+             for (j = 0 ; j < GPIO_DEBOUNCE_DELAY; j++)
+             {
+                 __NOP();
+             }
+
+             if (1 == GPIO_ReadPinInput(boardGpioConfig->base, boardGpioConfig->pin))
+             {
+                 debounce++;
+             }
+         }
+
+         if (debounce > 2)
+         {
+             break;
+         }
+     }
+     while (1);
+}
+#ifdef BOARD_GPIO_KEY_CONFIG
+void BOARD_GPIO_KEY_HANDLER()
+{
+
+
+    /* When user input captured, we disable GPIO interrupt */
+    NVIC_DisableIRQ(BOARD_GPIO_KEY_IRQ_NUM);
+
+    RDC_SEMAPHORE_Lock(BOARD_GPIO_KEY_RDC_PDAP);
+
+    /* Disable GPIO pin interrupt */
+    GPIO_SetPinIntMode(BOARD_GPIO_KEY_CONFIG->base, BOARD_GPIO_KEY_CONFIG->pin, false);
+    /* Clear the interrupt state */
+    GPIO_ClearStatusFlag(BOARD_GPIO_KEY_CONFIG->base, BOARD_GPIO_KEY_CONFIG->pin);
+
+    RDC_SEMAPHORE_Unlock(BOARD_GPIO_KEY_RDC_PDAP);
+
+#ifdef xSemaphoreGiveFromISR
+    BaseType_t xHigherPriorityTaskWoken = pdFALSE;
+    /* Unlock the task to process the event. */
+    xSemaphoreGiveFromISR(xSemaphore, &xHigherPriorityTaskWoken);
+
+    /* Perform a context switch to wake the higher priority task. */
+    portYIELD_FROM_ISR(xHigherPriorityTaskWoken);
+#endif
+}
+#endif
+
+/*******************************************************************************
+ * EOF
+ ******************************************************************************/
diff --git a/examples/imx7_colibri_m4/driver_examples/gpio_bank2_imx/gpio_ctrl.h b/examples/imx7_colibri_m4/driver_examples/gpio_bank2_imx/gpio_ctrl.h
new file mode 100644
index 0000000..4b20ce1
--- /dev/null
+++ b/examples/imx7_colibri_m4/driver_examples/gpio_bank2_imx/gpio_ctrl.h
@@ -0,0 +1,76 @@
+/*
+ * 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_CTRL_H__
+#define __GPIO_CTRL_H__
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*!
+ * @brief Initialize GPIO controller.
+ */
+void GPIO_Ctrl_Init(void);
+
+/*!
+ * @brief Toggle LED on/off status
+ */
+void GPIO_Ctrl_ToggleLed(gpio_config_t *boardGpioConfig, uint32_t boardGpioRdc);
+/*!
+ * @brief Clear LED on/off status
+ */
+void GPIO_Ctrl_ClearLed(gpio_config_t *boardGpioConfig, uint32_t boardGpioRdc);
+/*!
+ * @brief Set LED on/off status
+ */
+void GPIO_Ctrl_SetLed(gpio_config_t *boardGpioConfig, uint32_t boardGpioRdc);
+/*!
+ * @brief write LED on/off status
+ */
+void GPIO_Ctrl_WriteLed(gpio_config_t *boardGpioConfig, uint32_t boardGpioRdc, uint32_t value);
+/*!
+ * @brief Get Key on/off status
+ */
+uint32_t GPIO_Ctrl_GetKey(gpio_config_t *boardGpioConfig);
+
+/*!
+ * @brief Get Key on/off status
+ */
+void GPIO_WaitKeyPressed(gpio_config_t *boardGpioConfig, uint32_t boardGpioRdc);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __GPIO_CTRL_H__ */
+/*******************************************************************************
+ * EOF
+ ******************************************************************************/
diff --git a/examples/imx7_colibri_m4/driver_examples/gpio_bank2_imx/hardware_init.c b/examples/imx7_colibri_m4/driver_examples/gpio_bank2_imx/hardware_init.c
new file mode 100644
index 0000000..c0be651
--- /dev/null
+++ b/examples/imx7_colibri_m4/driver_examples/gpio_bank2_imx/hardware_init.c
@@ -0,0 +1,54 @@
+/*
+ * 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, we can set sreq argument to true
+     * when the peer core could also access GPIO with RDC_SEMAPHORE, or the peer
+     * core doesn't access the GPIO at all */
+    RDC_SetPdapAccess(RDC, rdcPdapGpio2, 0xFF, false/*true*/, false);
+
+    /* Enable gpio clock gate */
+ //   CCM_ControlGate(CCM, BOARD_GPIO_KEY_CCM_CCGR, ccmClockNeededRunWait);
+}
+
+/*******************************************************************************
+ * EOF
+ ******************************************************************************/
diff --git a/examples/imx7_colibri_m4/driver_examples/gpio_bank2_imx/main.c b/examples/imx7_colibri_m4/driver_examples/gpio_bank2_imx/main.c
new file mode 100644
index 0000000..c130c31
--- /dev/null
+++ b/examples/imx7_colibri_m4/driver_examples/gpio_bank2_imx/main.c
@@ -0,0 +1,94 @@
+/*
+ * 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 <stdio.h>
+#include "board.h"
+#include "gpio_pins.h"
+#include "gpio_imx.h"
+#include "gpio_ctrl.h"
+#include "debug_console_imx.h"
+
+
+/* button relevent variables */
+static uint8_t keyPressCount;
+static uint8_t keyPressCountOld;
+
+
+/******************************************************************************
+*
+* Function Name: main
+* Comments: Hello World Example with GPIO.
+*   This example include:
+*   Configure BUTTON1 as GPIO functionality
+*     and check the button's state(pressed or released). According to the Button
+*     status, copy it to the LED
+*
+******************************************************************************/
+int main(void)
+{
+    /* hardware initialiize, include RDC, IOMUX, Uart debug initialize */
+    hardware_init();
+    PRINTF("\n\r\n\r\n\r");
+    PRINTF("=======================================================\n\r");
+    PRINTF("================= GPIO Bank 2 Example =================\n\r");
+    PRINTF("===== Change the Led Status according to the Key ======\n\r");
+    PRINTF("=======================================================\n\r");
+
+    /* GPIO module initialize, configure "LED" as output and button as interrupt mode. */
+    GPIO_Ctrl_Init();
+
+    keyPressCount = 0;
+    keyPressCountOld = 0;
+
+    /* Initialize enviroments and led status */
+    keyPressCount = GPIO_Ctrl_GetKey(BOARD_GPIO_SWITCH1_CONFIG);
+    keyPressCountOld = keyPressCount;
+    GPIO_Ctrl_WriteLed(BOARD_GPIO_LED1_CONFIG, BOARD_GPIO_LED1_RDC_PDAP, keyPressCount);
+
+    PRINTF("================== Hello World GPIO ===================\n\r");
+
+    while(true)
+    {
+        /* wait for user change button leve */
+        keyPressCount = GPIO_Ctrl_GetKey(BOARD_GPIO_SWITCH1_CONFIG);
+        /* If button change, than print and update LED */
+        if(keyPressCount != keyPressCountOld)
+        {
+            keyPressCountOld = keyPressCount;
+            GPIO_Ctrl_WriteLed(BOARD_GPIO_LED1_CONFIG, BOARD_GPIO_LED1_RDC_PDAP, keyPressCount);
+            PRINTF("================== keyPressCount = %d ==================\n\r", keyPressCount);
+        }
+    }
+}
+
+
+/*******************************************************************************
+ * EOF
+ ******************************************************************************/