diff --git a/17_platform/.vscode/c_cpp_properties.json b/17_platform/.vscode/c_cpp_properties.json
new file mode 100644
index 0000000000000000000000000000000000000000..cb10f14b6b40f342741561de7075f245b6d38527
--- /dev/null
+++ b/17_platform/.vscode/c_cpp_properties.json
@@ -0,0 +1,40 @@
+{
+    "configurations": [
+        {
+            "name": "Linux",
+            "includePath": [
+                "../../../linux-imx-rel_imx_4.1.15_2.1.0_ga/include", 
+                "../../../linux-imx-rel_imx_4.1.15_2.1.0_ga/arch/arm/include", 
+                "../../../linux-imx-rel_imx_4.1.15_2.1.0_ga/arch/arm/include/generated",
+                "../../../linux-imx-rel_imx_4.1.15_2.1.0_ga/arch/arm/include/asm",
+                "../../../linux-imx-rel_imx_4.1.15_2.1.0_ga/drivers",
+                "${workspaceFolder}/**",
+                "${default}"
+            ],
+            "defines": ["__KERNEL__","__linux__"],
+            "compilerPath": "/usr/bin/clang",
+            "cStandard": "c11",
+            "cppStandard": "c++17",
+            "intelliSenseMode": "clang-x64"
+        },
+        {
+            "name": "Win32",
+            "includePath": [
+                "../../../linux-imx-rel_imx_4.1.15_2.1.0_ga/include", 
+                "../../../linux-imx-rel_imx_4.1.15_2.1.0_ga/arch/arm/include", 
+                "../../../linux-imx-rel_imx_4.1.15_2.1.0_ga/arch/arm/include/generated",
+                "../../../linux-imx-rel_imx_4.1.15_2.1.0_ga/arch/arm/include/asm",
+                "../../../linux-imx-rel_imx_4.1.15_2.1.0_ga/drivers",
+                "${workspaceFolder}/**",
+                "${default}"
+            ],
+            "defines": ["__KERNEL__","__linux__"],
+            "compilerPath": "C:/Qt/Qt5.12.9/Tools/mingw730_64/bin/gcc.exe",
+            "cStandard": "c11",
+            "cppStandard": "c++17",
+            "intelliSenseMode": "gcc-x64"
+        }
+    ],
+    "version": 4
+}
+
diff --git a/17_platform/.vscode/settings.json b/17_platform/.vscode/settings.json
new file mode 100644
index 0000000000000000000000000000000000000000..1a2a04ac7a2d6b080404235adcd34b94bc581cb4
--- /dev/null
+++ b/17_platform/.vscode/settings.json
@@ -0,0 +1,21 @@
+{
+    "search.exclude": {
+        "**/node_modules": true,
+        "**/bower_components": true,
+        "**/*.o":true,
+        "**/*.su":true, 
+        "**/*.cmd":true,
+        "Documentation":true,      
+    },
+    "files.exclude": {
+        "**/.git": true,
+        "**/.svn": true,
+        "**/.hg": true,
+        "**/CVS": true,
+        "**/.DS_Store": true,  
+        "**/*.o":true,
+        "**/*.su":true, 
+        "**/*.cmd":true,
+        "Documentation":true, 
+    }
+}
\ No newline at end of file
diff --git a/17_platform/Makefile b/17_platform/Makefile
new file mode 100644
index 0000000000000000000000000000000000000000..e51d710cc014e12c2cd4bd8e5e495a96cc42ee51
--- /dev/null
+++ b/17_platform/Makefile
@@ -0,0 +1,13 @@
+KERNELDIR := ../../../linux-imx-rel_imx_4.1.15_2.1.0_ga
+CURRENT_PATH := $(shell pwd)
+obj-m := leddevice.o
+
+build: kernel_modules
+
+kernel_modules:
+	$(MAKE) -C $(KERNELDIR) M=$(CURRENT_PATH) modules
+
+clean:
+	$(MAKE) -C $(KERNELDIR) M=$(CURRENT_PATH) clean
+
+
diff --git a/17_platform/ledApp.c b/17_platform/ledApp.c
new file mode 100644
index 0000000000000000000000000000000000000000..05b1adcc81378cf278a2a8161ba082a9f986b5c6
--- /dev/null
+++ b/17_platform/ledApp.c
@@ -0,0 +1,46 @@
+#include "stdio.h"
+#include "unistd.h"
+#include "sys/types.h"
+#include "fcntl.h"
+#include "stdlib.h"
+#include "string.h"
+
+#define LEDOFF 0
+#define LEDOON 0
+
+int main(int argc,char *argv[])
+{
+    int fd, retvalue;
+    char *filename;
+    unsigned char databuf[3];
+    if (argc != 3)
+    {
+        printf("Error Usage!\r\n");
+        return -1;
+    }
+
+    filename = argv[1];
+
+    /* 打开led驱动 */
+    fd = open(filename, O_RDWR);
+    if(fd < 0){
+        printf("file %s open failed!\r\n", argv[1]);
+        return -1;
+    }
+
+    databuf[0] = atoi(argv[2]);
+    retvalue = write(fd, databuf, sizeof(databuf));
+    if(retvalue < 0 ){
+        printf("LED Control Failed!\r\n");
+        close(fd);
+        return -1;
+    }
+
+    retvalue = close(fd);
+    if(retvalue < 0){
+        printf("file %s close failed!\r\n", argv[1]);
+        return -1;
+    }
+
+    return 0;
+}
diff --git a/17_platform/leddevice.c b/17_platform/leddevice.c
new file mode 100644
index 0000000000000000000000000000000000000000..9e3091fd862e4c35959be5e8f5af911e434793e0
--- /dev/null
+++ b/17_platform/leddevice.c
@@ -0,0 +1,112 @@
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/delay.h>
+#include <linux/ide.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/errno.h>
+#include <linux/gpio.h>
+#include <linux/cdev.h>
+#include <linux/device.h>
+#include <linux/of_gpio.h>
+#include <linux/semaphore.h>
+#include <linux/timer.h>
+#include <linux/irq.h>
+#include <linux/wait.h>
+#include <linux/poll.h>
+#include <linux/fs.h>
+#include <linux/fcntl.h>
+#include <linux/platform_device.h>
+#include <asm/mach/map.h>
+#include <asm/uaccess.h>
+#include <asm/io.h>
+
+/*
+* 寄存器地址定义
+*/
+#define CCM_CCGR1_BASE         (0X020C406C)
+#define SW_MUX_GPIO1_IO03_BASE (0X020E0068)
+#define SW_PAD_GPIO1_IO03_BASE (0X020E02F4)
+#define GPIO1_DR_BASE          (0X0209C000)
+#define GPIO1_GDIR_BASE        (0X0209C004)
+#define REGISTER_LENGTH         4
+
+/* 
+	@description : 释放 flatform 设备模块的时候此函数会执行
+* @param - dev : 要释放的设备
+
+* @return 无
+*/ 
+static void led_release(struct device *dev)
+{
+	printk("led device released!\r\n");
+}
+
+static struct resource led_resources[] = {
+	[0] = {
+		.start = CCM_CCGR1_BASE,
+		.end = (CCM_CCGR1_BASE + REGISTER_LENGTH - 1),
+		.flags = IORESOURCE_MEM,
+	},
+	[1] = {
+		.start = SW_MUX_GPIO1_IO03_BASE,
+		.end = (SW_MUX_GPIO1_IO03_BASE + REGISTER_LENGTH - 1),
+		.flags = IORESOURCE_MEM,
+	},
+	[2] = {
+		.start = SW_PAD_GPIO1_IO03_BASE,
+		.end = (SW_PAD_GPIO1_IO03_BASE + REGISTER_LENGTH - 1),
+		.flags = IORESOURCE_MEM,
+	},
+	[3] = {
+		.start = GPIO1_DR_BASE,
+		.end = (GPIO1_DR_BASE + REGISTER_LENGTH - 1),
+		.flags = IORESOURCE_MEM,
+	},
+	[4] = {
+		.start = GPIO1_GDIR_BASE,
+		.end = (GPIO1_GDIR_BASE + REGISTER_LENGTH - 1),
+		.flags = IORESOURCE_MEM,
+	},
+};
+
+
+
+/*
+* platform 设备结构体
+*/
+ static struct platform_device leddevice = {
+	.name = "imx6ul-led",
+	.id = -1,
+	.dev = {
+	.release = &led_release,
+ 	},
+	.num_resources = ARRAY_SIZE(led_resources),
+	.resource = led_resources,
+};
+
+
+/*
+* @description: 设备模块加载
+* @param : 无
+* @return : 无
+*/ 
+static int __init leddevice_init(void)
+{
+	return platform_device_register(&leddevice);
+}
+
+/*
+* @description : 设备模块注销
+* @param : 无
+* @return : 无
+*/ 
+static void __exit leddevice_exit(void)
+{
+	platform_device_unregister(&leddevice);
+}
+
+module_init(leddevice_init);
+module_exit(leddevice_exit);
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("chaoliang");
\ No newline at end of file
diff --git a/17_platform/leddriver.c b/17_platform/leddriver.c
new file mode 100644
index 0000000000000000000000000000000000000000..509adf288f93513cbff612780c62615591ee68a0
--- /dev/null
+++ b/17_platform/leddriver.c
@@ -0,0 +1,220 @@
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/delay.h>
+#include <linux/ide.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/errno.h>
+#include <linux/gpio.h>
+#include <linux/cdev.h>
+#include <linux/device.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/of_gpio.h>
+#include <linux/of_irq.h>
+#include <linux/irq.h>
+#include <asm/mach/map.h>
+#include <asm/uaccess.h>
+#include <asm/io.h>
+#include <linux/atomic.h>
+#include <linux/timer.h>
+#include <linux/platform_device.h>
+
+#define LEDDEV_CNT 1 /* 设备号长度 */
+#define LEDDEV_NAME "platled" /* 设备名字 */
+#define LEDOFF     0
+#define LEDON      1
+
+
+/* 寄存器名 */
+static void __iomem *IMX6U_CCM_CCGR1;
+static void __iomem *SW_MUX_GPIO1_IO03;
+static void __iomem *SW_PAD_GPIO1_IO03;
+static void __iomem *GPIO1_DR;
+static void __iomem *GPIO1_GDIR;
+
+
+/* leddev 设备结构体*/
+struct leddev_dev{
+    dev_t devid;
+    struct cdev cdev;
+    struct class *class;
+    struct device *device;
+    int major;
+};
+
+struct leddev_dev leddev; /* led设备 */  
+
+void led0_switch(u8 sta)
+{
+    u32 val = 0;
+    if(sta == LEDON){
+        val = readl(GPIO1_DR);
+        val &= ~(1 << 3);
+        writel(val, GPIO1_DR);
+    }else if(sta == LEDOFF){
+        val = readl(GPIO1_DR);
+        val |= (1 << 3);
+        writel(val, GPIO1_DR);
+    }
+}
+
+
+static int led_open(struct inode *inode, struct file *filp)
+{
+    filp->private_data = &leddev;   /*  设置私有数据 */
+    return 0;
+}
+
+static ssize_t led_write(struct file *filp, const char __user *buf,
+                         size_t cnt, loff_t *offt)
+{
+    int retvalue;
+    unsigned char databuf[1];
+    unsigned char ledstat;
+    retvalue = copy_from_user(databuf, buf, cnt);
+    if (retvalue < 0)
+    {
+        return -EFAULT;
+    }
+
+    ledstat = databuf[0]; /* 获取状态 */
+    if(ledstat == LEDON){
+        led0_switch(LEDON);
+    }
+    else if(ledstat == LEDOFF){
+        led0_switch(LEDOFF);
+    }
+    return 0;
+}
+
+static struct file_operations led_fops = {
+    .owner = THIS_MODULE,
+    .open = led_open,
+    .write = led_write,
+};
+
+static int led_probe(struct platform_device *dev)
+{
+    int i = 0;
+    int ressize[5];
+    u32 val = 0;
+    struct resource *ledsource[5];
+
+    printk("led driver and device has matched!\r\n");
+
+    /* 1、获取资源 */
+    for (i = 0; i < 5;i++){
+        ledsource[i] = platform_get_resource(dev, IORESOURCE_MEM, i);
+        if(!ledsource[i]){
+            dev_err(&dev->dev, "No MEM resource for always on\r\n");
+            printk("No MEM resource[%d] \r\n", i);
+            return -ENXIO;
+        }
+        ressize[i] = resource_size(ledsource[i]);
+    }
+
+    /* 2、初始化LED */
+    /* 寄存器地址映射 */
+    IMX6U_CCM_CCGR1 = ioremap(ledsource[0]->start, ressize[0]);
+    SW_MUX_GPIO1_IO03 = ioremap(ledsource[1]->start, ressize[1]);
+    SW_PAD_GPIO1_IO03 = ioremap(ledsource[2]->start, ressize[2]);
+    GPIO1_DR = ioremap(ledsource[3]->start, ressize[3]);
+    GPIO1_GDIR = ioremap(ledsource[4]->start, ressize[4]);
+
+    val = readl(IMX6U_CCM_CCGR1);
+    val &= ~(3 << 26); /* 清除以前的设置 */
+    val |= (3 << 26); /* 设置新值 */
+    writel(val, IMX6U_CCM_CCGR1);
+
+    /* 设置 GPIO1_IO03 复用功能，将起复用为GPIO_IO03 */
+    writel(5, SW_MUX_GPIO1_IO03);
+    writel(0x10B0, SW_PAD_GPIO1_IO03);
+
+    /* 设置 GPIO1_IO03 为输出功能 */
+    val = readl(GPIO1_GDIR); 
+    val &= ~(1 << 3); /* 清除以前的设置 */
+    val |= (1 << 3);
+    writel(val, GPIO1_GDIR); /* 设置为输出 */
+
+
+   /* 默认关闭 LED1 */
+    val = readl(GPIO1_DR);
+    val |= (1 << 3) ;
+    writel(val, GPIO1_DR);
+
+    /* 注册字符设备驱动 */
+    /*1、创建设备号 */
+
+   if (leddev.major) {
+    /* 定义了设备号*/
+    leddev.devid = MKDEV(leddev.major, 0);
+    register_chrdev_region(leddev.devid, LEDDEV_CNT,LEDDEV_NAME);
+    } else {
+        /* 没有定义设备号*/
+        alloc_chrdev_region(&leddev.devid, 0, LEDDEV_CNT,LEDDEV_NAME);
+        leddev.major = MAJOR(leddev.devid); 
+    }
+
+    /* 2、初始化 cdev */
+    leddev.cdev.owner = THIS_MODULE;
+    cdev_init(&leddev.cdev, &led_fops);
+
+    /* 3、添加一个 cdev */
+    cdev_add(&leddev.cdev, leddev.devid, LEDDEV_CNT);
+
+    /* 4、创建类 */
+    leddev.class = class_create(THIS_MODULE, LEDDEV_NAME);
+    if (IS_ERR(leddev.class)) {
+        return PTR_ERR(leddev.class);
+    }
+    /* 5、创建设备 */
+    leddev.device = device_create(leddev.class, NULL, leddev.devid,NULL, LEDDEV_NAME);
+    if (IS_ERR(leddev.device)) {
+        return PTR_ERR(leddev.device);
+    }
+
+    return 0;
+}
+
+static int led_remove(struct platform_device *dev)
+{
+    iounmap(IMX6U_CCM_CCGR1);
+    iounmap(SW_MUX_GPIO1_IO03);
+    iounmap(SW_PAD_GPIO1_IO03);
+    iounmap(GPIO1_DR);
+    iounmap(GPIO1_GDIR);
+
+    cdev_del(&leddev.cdev);
+    unregister_chrdev_region(leddev.devid, LEDDEV_CNT);
+    device_destroy(leddev.class, leddev.devid);
+    class_destroy(leddev.class);
+    printk("led driver rmmove!\r\n");
+    return 0;
+}
+
+static struct platform_driver led_driver = 
+{
+    .driver = {
+        .name  = "imx6ul-led",
+    },
+    .probe = led_probe,
+    .remove = led_remove,
+};
+
+
+
+static int __init leddriver_init(void)
+{
+    return platform_driver_register(&led_driver);
+}
+
+static __exit leddriver_exit(void)
+{
+    platform_driver_unregister(&led_driver);
+}
+
+module_init(leddriver_init);
+module_exit(leddriver_exit);
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("chaoliang");
\ No newline at end of file
diff --git a/17_platform/platform.code-workspace b/17_platform/platform.code-workspace
new file mode 100644
index 0000000000000000000000000000000000000000..a563c858bedf0385cd9bbd6d0395651af865f705
--- /dev/null
+++ b/17_platform/platform.code-workspace
@@ -0,0 +1,41 @@
+{
+	"folders": [
+		{
+			"path": "."
+		}
+	],
+	"settings": {
+		"files.associations": {
+			"gpio.h": "c",
+			"*.tcc": "c",
+			"ioctl.h": "c",
+			"fstream": "c",
+			"types.h": "c",
+			"kernel.h": "c",
+			"ide.h": "c",
+			"uaccess.h": "c",
+			"atomic.h": "c",
+			"interrupt.h": "c",
+			"hardirq.h": "c",
+			"irq.h": "c",
+			"delay.h": "c",
+			"init.h": "c",
+			"module.h": "c",
+			"cdev.h": "c",
+			"of_address.h": "c",
+			"of_gpio.h": "c",
+			"errno.h": "c",
+			"device.h": "c",
+			"of.h": "c",
+			"of_irq.h": "c",
+			"timer.h": "c",
+			"stdlib.h": "c",
+			"stdio.h": "c",
+			"driver.h": "c",
+			"select.h": "c",
+			"fcntl.h": "c",
+			"signal.h": "c"
+		}
+		
+	}
+}
\ No newline at end of file