diff --git a/IMX6ULL/doc_pic/11_SPI/17_OLED_Framebuffer驱动_上机实验.md b/IMX6ULL/doc_pic/11_SPI/17_OLED_Framebuffer驱动_上机实验.md
new file mode 100644
index 0000000..2134516
--- /dev/null
+++ b/IMX6ULL/doc_pic/11_SPI/17_OLED_Framebuffer驱动_上机实验.md
@@ -0,0 +1,242 @@
+# OLED_Framebuffer驱动_上机实验 #
+
+* 源码:
+
+  ![image-20220509140847199](pic/79_src_for_framebuffer_ok.png)
+  
+* DMA参考文章：https://www.kernel.org/doc/html/latest/core-api/dma-api-howto.html
+
+## 1. 硬件
+
+### 1.1 原理图
+
+IMX6ULL:
+
+![image-20220316120535482](pic/47_imx6ull_oled_sch.png)
+
+STM32MP157:
+
+![image-20220316120427564](pic/48_stm32mp157_oled_sch.png)
+
+
+
+原理图：
+
+![image-20220314114847437](pic/49_oled_sch.png)
+
+
+
+### 1.2 连接
+
+无论是使用IMX6ULL开发板还是STM32MP157开发板，都有类似的扩展板。把OLED模块接到扩展板的SPI_A插座上，如下：
+
+![image-20220314115446373](pic/50_oled_on_extend_brd.png)
+
+
+
+
+
+## 2. 编写设备树
+
+### 2.1.1 IMX6ULL
+
+![](pic/44_imx6ull_pro_extend_spi_a.png)
+
+DC引脚使用GPIO4_20，也需在设备树里指定。
+
+设备树如下：arch/arm/boot/dts/100ask_imx6ull-14x14.dts
+
+```shell
+&ecspi1 {
+    pinctrl-names = "default";
+    pinctrl-0 = <&pinctrl_ecspi1>;
+
+    fsl,spi-num-chipselects = <2>;
+    cs-gpios = <&gpio4 26 GPIO_ACTIVE_LOW>, <&gpio4 24 GPIO_ACTIVE_LOW>;
+    status = "okay";
+
+    oled: oled {
+        compatible = "100ask,oled";
+        reg = <0>;
+        spi-max-frequency = <10000000>;
+        dc-gpios = <&gpio4 20 GPIO_ACTIVE_HIGH>; 
+    };
+};
+```
+
+
+
+
+
+### 2.1.2 STM32MP157
+
+![](pic/45_stm32mp157_pro_extend_spi_a.png)
+
+DC引脚使用GPIOA_13，也需要在设备树里指定。
+
+设备树如下：`arch/arm/boot/dts/stm32mp157c-100ask-512d-lcd-v1.dts`
+
+```shell
+&spi5 {
+        pinctrl-names = "default", "sleep";
+        pinctrl-0 = <&spi5_pins_a>;
+        pinctrl-1 = <&spi5_sleep_pins_a>;
+        status = "okay";
+        cs-gpios = <&gpioh 5 GPIO_ACTIVE_LOW>, <&gpioz 4 GPIO_ACTIVE_LOW>;
+        spidev: icm20608@0{
+                compatible = "invensense,icm20608";
+                interrupts = <0 IRQ_TYPE_EDGE_FALLING>;
+                interrupt-parent = <&gpioz>;
+                spi-max-frequency = <8000000>;
+                reg = <0>;
+        };
+        oled: oled@1{
+                compatible = "100ask,oled";
+                spi-max-frequency = <10000000>;
+                reg = <1>;
+                dc-gpios = <&gpioa 13 GPIO_ACTIVE_HIGH>;
+        };
+};
+```
+
+
+
+## 3. 编译替换设备树
+
+### 3.1 IMX6ULL
+
+#### 3.1.1 设置工具链
+
+```shell
+export ARCH=arm
+export CROSS_COMPILE=arm-buildroot-linux-gnueabihf-
+ export PATH=$PATH:/home/book/100ask_imx6ull-sdk/ToolChain/arm-buildroot-linux-gnueabihf_sdk-buildroot/bin
+```
+
+
+#### 3.1.2 编译、替换设备树
+
+  * 编译设备树：
+    在Ubuntu的IMX6ULL内核目录下执行如下命令,
+    得到设备树文件：`arch/arm/boot/dts/100ask_imx6ull-14x14.dtb`
+
+    ```shell
+    make dtbs
+    ```
+
+  * 复制到NFS目录：
+
+    ```shell
+    $ cp arch/arm/boot/dts/100ask_imx6ull-14x14.dtb ~/nfs_rootfs/
+    ```
+
+  * 开发板上挂载NFS文件系统
+
+    ```shell
+    [root@100ask:~]#  mount -t nfs -o nolock,vers=3 192.168.1.137:/home/book/nfs_rootfs /mnt
+    ```
+
+* 更新设备树
+
+    ```shell
+    [root@100ask:~]# cp /mnt/100ask_imx6ull-14x14.dtb /boot
+    [root@100ask:~]# sync
+    ```
+
+* 重启开发板
+
+
+
+### 3.2 STM32MP157
+
+#### 3.2.1 设置工具链
+
+```shell
+export ARCH=arm
+export CROSS_COMPILE=arm-buildroot-linux-gnueabihf-
+export PATH=$PATH:/home/book/100ask_stm32mp157_pro-sdk/ToolChain/arm-buildroot-linux-gnueabihf_sdk-buildroot/bin
+```
+
+
+#### 3.2.2 编译、替换设备树
+
+  * 编译设备树：
+    在Ubuntu的STM32MP157内核目录下执行如下命令,
+    得到设备树文件：`arch/arm/boot/dts/stm32mp157c-100ask-512d-lcd-v1.dtb`
+
+    ```shell
+    make dtbs
+    ```
+
+  * 复制到NFS目录：
+
+    ```shell
+    $ cp arch/arm/boot/dts/stm32mp157c-100ask-512d-lcd-v1.dtb ~/nfs_rootfs/
+    ```
+
+  * 开发板上挂载NFS文件系统
+
+    ```shell
+    [root@100ask:~]#  mount -t nfs -o nolock,vers=3 192.168.1.137:/home/book/nfs_rootfs /mnt
+    ```
+
+* 确定设备树分区挂载在哪里
+
+  由于版本变化，STM32MP157单板上烧录的系统可能有细微差别。
+  在开发板上执行`cat /proc/mounts`后，可以得到两种结果(见下图)：
+
+  * mmcblk2p2分区挂载在/boot目录下(下图左边)：无需特殊操作，下面把文件复制到/boot目录即可
+
+  * mmcblk2p2挂载在/mnt目录下(下图右边)
+
+    * 在视频里、后面文档里，都是更新/boot目录下的文件，所以要先执行以下命令重新挂载：
+      * `mount  /dev/mmcblk2p2  /boot`
+
+    ![](pic/46_boot_mount.png)
+
+* 更新设备树
+
+  ```shell
+  [root@100ask:~]# cp /mnt/stm32mp157c-100ask-512d-lcd-v1.dtb /boot/
+  [root@100ask:~]# sync
+  ```
+
+* 重启开发板
+
+
+
+## 4. 编译OLED驱动
+
+```shell
+cd 10_oled_framebuffer_ok
+make
+```
+
+
+
+## 5. 编译APP
+
+```shell
+cd  10_oled_framebuffer_ok/03_freetype_show_font_angle
+make
+```
+
+
+
+
+
+## 6. 上机实验
+
+```shell
+1. 安装驱动程序, 确定新出现哪个设备节点
+ls /dev/fb*
+insmod oled_drv.ko
+ls /dev/fb*
+
+2. 在IMX6ULL上运行测试程序
+./freetype_show_font_angle  /dev/fb2 ./simsun.ttc 0 20
+
+2. 在STM32MP157上运行测试程序
+./freetype_show_font_angle  /dev/fb1 ./simsun.ttc 0 20
+```
+
diff --git a/IMX6ULL/doc_pic/11_SPI/17_OLED_Framebuffer驱动_上机实验.tif b/IMX6ULL/doc_pic/11_SPI/17_OLED_Framebuffer驱动_上机实验.tif
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diff --git a/IMX6ULL/doc_pic/11_SPI/pic/79_src_for_framebuffer_ok.png b/IMX6ULL/doc_pic/11_SPI/pic/79_src_for_framebuffer_ok.png
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diff --git a/IMX6ULL/source/11_SPI/10_oled_framebuffer_ok/03_freetype_show_font_angle/Makefile b/IMX6ULL/source/11_SPI/10_oled_framebuffer_ok/03_freetype_show_font_angle/Makefile
new file mode 100644
index 0000000..9a2924b
--- /dev/null
+++ b/IMX6ULL/source/11_SPI/10_oled_framebuffer_ok/03_freetype_show_font_angle/Makefile
@@ -0,0 +1,18 @@
+
+# 1. 使用不同的开发板内核时, 一定要修改KERN_DIR
+# 2. KERN_DIR中的内核要事先配置、编译, 为了能编译内核, 要先设置下列环境变量:
+# 2.1 ARCH,          比如: export ARCH=arm64
+# 2.2 CROSS_COMPILE, 比如: export CROSS_COMPILE=aarch64-linux-gnu-
+# 2.3 PATH,          比如: export PATH=$PATH:/home/book/100ask_roc-rk3399-pc/ToolChain-6.3.1/gcc-linaro-6.3.1-2017.05-x86_64_aarch64-linux-gnu/bin 
+# 注意: 不同的开发板不同的编译器上述3个环境变量不一定相同,
+#       请参考各开发板的高级用户使用手册
+
+
+all:
+	$(CROSS_COMPILE)gcc -I /home/book/100ask_imx6ull-sdk/ToolChain/arm-buildroot-linux-gnueabihf_sdk-buildroot/arm-buildroot-linux-gnueabihf/sysroot/usr/include/freetype2 -o freetype_show_font_angle freetype_show_font_angle.c -lm -lfreetype
+
+clean:
+	rm -rf *.o freetype_show_font_angle
+
+
+
diff --git a/IMX6ULL/source/11_SPI/10_oled_framebuffer_ok/03_freetype_show_font_angle/freetype_show_font_angle.c b/IMX6ULL/source/11_SPI/10_oled_framebuffer_ok/03_freetype_show_font_angle/freetype_show_font_angle.c
new file mode 100644
index 0000000..fb2b994
--- /dev/null
+++ b/IMX6ULL/source/11_SPI/10_oled_framebuffer_ok/03_freetype_show_font_angle/freetype_show_font_angle.c
@@ -0,0 +1,210 @@
+#include <sys/mman.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include <linux/fb.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <string.h>
+#include <math.h>
+#include <wchar.h>
+#include <sys/ioctl.h>
+#include <ft2build.h>
+#include FT_FREETYPE_H
+#include FT_GLYPH_H
+
+int fd_fb;
+struct fb_var_screeninfo var;	/* Current var */
+int screen_size;
+unsigned char *fbmem;
+unsigned int line_width;
+unsigned int pixel_width;
+
+
+/**********************************************************************
+ * 函数名称： lcd_put_pixel
+ * 功能描述： 在LCD指定位置上输出指定颜色（描点）
+ * 输入参数： x坐标，y坐标，颜色
+ * 输出参数： 无
+ * 返 回 值： 会
+ * 修改日期        版本号     修改人	      修改内容
+ * -----------------------------------------------
+ * 2020/05/12	     V1.0	  zh(angenao)	      创建
+ ***********************************************************************/ 
+void lcd_put_pixel(int x, int y, unsigned int color)
+{
+	unsigned char *pen_8 = fbmem+y*line_width+x*pixel_width;
+	unsigned short *pen_16;	
+	unsigned int *pen_32;	
+
+	unsigned int red, green, blue;	
+	int bit;
+
+	pen_16 = (unsigned short *)pen_8;
+	pen_32 = (unsigned int *)pen_8;
+
+	switch (var.bits_per_pixel)
+	{
+		case 1:
+		{
+			pen_8 = fbmem+y*line_width+x/8;
+			bit = x & 7;
+			if (color)
+				*pen_8 = *pen_8 | (1<<bit);
+			else
+				*pen_8 = *pen_8 & ~(1<<bit);
+			break;
+		}
+		case 8:
+		{
+			*pen_8 = color;
+			break;
+		}
+		case 16:
+		{
+			/* 565 */
+			red   = (color >> 16) & 0xff;
+			green = (color >> 8) & 0xff;
+			blue  = (color >> 0) & 0xff;
+			color = ((red >> 3) << 11) | ((green >> 2) << 5) | (blue >> 3);
+			*pen_16 = color;
+			break;
+		}
+		case 32:
+		{
+			*pen_32 = color;
+			break;
+		}
+		default:
+		{
+			printf("can't surport %dbpp\n", var.bits_per_pixel);
+			break;
+		}
+	}
+}
+
+/**********************************************************************
+ * 函数名称： draw_bitmap
+ * 功能描述： 根据bitmap位图，在LCD指定位置显示汉字
+ * 输入参数： x坐标，y坐标，位图指针
+ * 输出参数： 无
+ * 返 回 值： 无
+ * 修改日期        版本号     修改人	      修改内容
+ * -----------------------------------------------
+ * 2020/05/12	     V1.0	  zh(angenao)	      创建
+ ***********************************************************************/ 
+void
+draw_bitmap( FT_Bitmap*  bitmap,
+             FT_Int      x,
+             FT_Int      y)
+{
+	FT_Int  i, j, p, q;
+	FT_Int  x_max = x + bitmap->width;
+	FT_Int  y_max = y + bitmap->rows;
+
+	//printf("x = %d, y = %d\n", x, y);
+
+	for ( j = y, q = 0; j < y_max; j++, q++ )
+	{
+		for ( i = x, p = 0; i < x_max; i++, p++ )
+		{
+			if ( i < 0      || j < 0       ||
+				i >= var.xres || j >= var.yres )
+			continue;
+
+			//image[j][i] |= bitmap->buffer[q * bitmap->width + p];
+			lcd_put_pixel(i, j, bitmap->buffer[q * bitmap->width + p]);
+		}
+	}
+}
+
+
+int main(int argc, char **argv)
+{
+	wchar_t *chinese_str = L"繁";
+
+	FT_Library	  library;
+	FT_Face 	  face;
+	int error;
+    FT_Vector     pen;
+	FT_GlyphSlot  slot;
+	int font_size = 24;
+	FT_Matrix	  matrix;				  /* transformation matrix */
+	double		  angle;
+
+	if (argc < 3)
+	{
+		printf("Usage : %s </dev/fbX> <font_file> <angle> [font_size]\n", argv[0]);
+		return -1;
+	}
+
+	angle  = ( 1.0* strtoul(argv[3], NULL, 0) / 360 ) * 3.14159 * 2;	   /* use 25 degrees	 */
+
+	if (argc == 5)
+		font_size = strtoul(argv[4], NULL, 0);
+		
+	fd_fb = open(argv[1], O_RDWR);
+	if (fd_fb < 0)
+	{
+		printf("can't open %s\n", argv[1]);
+		return -1;
+	}
+
+	if (ioctl(fd_fb, FBIOGET_VSCREENINFO, &var))
+	{
+		printf("can't get var\n");
+		return -1;
+	}
+
+	line_width  = var.xres * var.bits_per_pixel / 8;
+	pixel_width = var.bits_per_pixel / 8;
+	screen_size = var.xres * var.yres * var.bits_per_pixel / 8;
+	fbmem = (unsigned char *)mmap(NULL , screen_size, PROT_READ | PROT_WRITE, MAP_SHARED, fd_fb, 0);
+	if (fbmem == (unsigned char *)-1)
+	{
+		printf("can't mmap\n");
+		return -1;
+	}
+
+	/* 清屏: 全部设为黑色 */
+	memset(fbmem, 0, screen_size);
+
+	/* 显示矢量字体 */
+	error = FT_Init_FreeType( &library );			   /* initialize library */
+	/* error handling omitted */
+	
+	error = FT_New_Face( library, argv[2], 0, &face ); /* create face object */
+	/* error handling omitted */	
+	slot = face->glyph;
+
+	FT_Set_Pixel_Sizes(face, font_size, 0);
+
+	/* 确定座标:
+	 */
+	pen.x = 0;
+	pen.y = 0;
+
+	/* set up matrix */
+	matrix.xx = (FT_Fixed)( cos( angle ) * 0x10000L );
+	matrix.xy = (FT_Fixed)(-sin( angle ) * 0x10000L );
+	matrix.yx = (FT_Fixed)( sin( angle ) * 0x10000L );
+	matrix.yy = (FT_Fixed)( cos( angle ) * 0x10000L );
+
+    /* set transformation */
+    FT_Set_Transform( face, &matrix, &pen);
+
+    /* load glyph image into the slot (erase previous one) */
+    error = FT_Load_Char( face, chinese_str[0], FT_LOAD_RENDER );
+	if (error)
+	{
+		printf("FT_Load_Char error\n");
+		return -1;
+	}
+	
+    draw_bitmap( &slot->bitmap,
+                 var.xres/2,
+                 var.yres/2);
+
+	return 0;	
+}
+
diff --git a/IMX6ULL/source/11_SPI/10_oled_framebuffer_ok/03_freetype_show_font_angle/simsun.ttc b/IMX6ULL/source/11_SPI/10_oled_framebuffer_ok/03_freetype_show_font_angle/simsun.ttc
new file mode 100644
index 0000000..23d5c4a
Binary files /dev/null and b/IMX6ULL/source/11_SPI/10_oled_framebuffer_ok/03_freetype_show_font_angle/simsun.ttc differ
diff --git a/IMX6ULL/source/11_SPI/10_oled_framebuffer_ok/Makefile b/IMX6ULL/source/11_SPI/10_oled_framebuffer_ok/Makefile
new file mode 100644
index 0000000..2b47cb9
--- /dev/null
+++ b/IMX6ULL/source/11_SPI/10_oled_framebuffer_ok/Makefile
@@ -0,0 +1,22 @@
+
+# 1. 使用不同的开发板内核时, 一定要修改KERN_DIR
+# 2. KERN_DIR中的内核要事先配置、编译, 为了能编译内核, 要先设置下列环境变量:
+# 2.1 ARCH,          比如: export ARCH=arm64
+# 2.2 CROSS_COMPILE, 比如: export CROSS_COMPILE=aarch64-linux-gnu-
+# 2.3 PATH,          比如: export PATH=$PATH:/home/book/100ask_roc-rk3399-pc/ToolChain-6.3.1/gcc-linaro-6.3.1-2017.05-x86_64_aarch64-linux-gnu/bin 
+# 注意: 不同的开发板不同的编译器上述3个环境变量不一定相同,
+#       请参考各开发板的高级用户使用手册
+
+KERN_DIR = /home/book/100ask_imx6ull-sdk/Linux-4.9.88
+
+all:
+	make -C $(KERN_DIR) M=`pwd` modules 
+	$(CROSS_COMPILE)gcc -o spi_oled spi_oled.c
+
+clean:
+	make -C $(KERN_DIR) M=`pwd` modules clean
+	rm -rf modules.order spi_oled
+
+obj-m	+= oled_drv.o
+
+
diff --git a/IMX6ULL/source/11_SPI/10_oled_framebuffer_ok/font.h b/IMX6ULL/source/11_SPI/10_oled_framebuffer_ok/font.h
new file mode 100644
index 0000000..5698917
--- /dev/null
+++ b/IMX6ULL/source/11_SPI/10_oled_framebuffer_ok/font.h
@@ -0,0 +1,106 @@
+#ifndef  _FONT_H_
+#define _FONT_H_
+const unsigned char oled_asc2_8x16[95][16]=
+{
+    {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00},// 0
+    {0x00,0x00,0x00,0xF8,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x33,0x30,0x00,0x00,0x00},//!1
+    {0x00,0x10,0x0C,0x06,0x10,0x0C,0x06,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00},//"2
+    {0x40,0xC0,0x78,0x40,0xC0,0x78,0x40,0x00,0x04,0x3F,0x04,0x04,0x3F,0x04,0x04,0x00},//#3
+    {0x00,0x70,0x88,0xFC,0x08,0x30,0x00,0x00,0x00,0x18,0x20,0xFF,0x21,0x1E,0x00,0x00},//$4
+    {0xF0,0x08,0xF0,0x00,0xE0,0x18,0x00,0x00,0x00,0x21,0x1C,0x03,0x1E,0x21,0x1E,0x00},//%5
+    {0x00,0xF0,0x08,0x88,0x70,0x00,0x00,0x00,0x1E,0x21,0x23,0x24,0x19,0x27,0x21,0x10},//&6
+    {0x10,0x16,0x0E,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00},//'7
+    {0x00,0x00,0x00,0xE0,0x18,0x04,0x02,0x00,0x00,0x00,0x00,0x07,0x18,0x20,0x40,0x00},//(8
+    {0x00,0x02,0x04,0x18,0xE0,0x00,0x00,0x00,0x00,0x40,0x20,0x18,0x07,0x00,0x00,0x00},//)9
+    {0x40,0x40,0x80,0xF0,0x80,0x40,0x40,0x00,0x02,0x02,0x01,0x0F,0x01,0x02,0x02,0x00},//*10
+    {0x00,0x00,0x00,0xF0,0x00,0x00,0x00,0x00,0x01,0x01,0x01,0x1F,0x01,0x01,0x01,0x00},//+11
+    {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x80,0xB0,0x70,0x00,0x00,0x00,0x00,0x00},//,12
+    {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x01,0x01,0x01,0x01,0x01,0x01},//-13
+    {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x30,0x30,0x00,0x00,0x00,0x00,0x00},//.14
+    {0x00,0x00,0x00,0x00,0x80,0x60,0x18,0x04,0x00,0x60,0x18,0x06,0x01,0x00,0x00,0x00},///15
+    {0x00,0xE0,0x10,0x08,0x08,0x10,0xE0,0x00,0x00,0x0F,0x10,0x20,0x20,0x10,0x0F,0x00},//016
+    {0x00,0x10,0x10,0xF8,0x00,0x00,0x00,0x00,0x00,0x20,0x20,0x3F,0x20,0x20,0x00,0x00},//117
+    {0x00,0x70,0x08,0x08,0x08,0x88,0x70,0x00,0x00,0x30,0x28,0x24,0x22,0x21,0x30,0x00},//218
+    {0x00,0x30,0x08,0x88,0x88,0x48,0x30,0x00,0x00,0x18,0x20,0x20,0x20,0x11,0x0E,0x00},//319
+    {0x00,0x00,0xC0,0x20,0x10,0xF8,0x00,0x00,0x00,0x07,0x04,0x24,0x24,0x3F,0x24,0x00},//420
+    {0x00,0xF8,0x08,0x88,0x88,0x08,0x08,0x00,0x00,0x19,0x21,0x20,0x20,0x11,0x0E,0x00},//521
+    {0x00,0xE0,0x10,0x88,0x88,0x18,0x00,0x00,0x00,0x0F,0x11,0x20,0x20,0x11,0x0E,0x00},//622
+    {0x00,0x38,0x08,0x08,0xC8,0x38,0x08,0x00,0x00,0x00,0x00,0x3F,0x00,0x00,0x00,0x00},//723
+    {0x00,0x70,0x88,0x08,0x08,0x88,0x70,0x00,0x00,0x1C,0x22,0x21,0x21,0x22,0x1C,0x00},//824
+    {0x00,0xE0,0x10,0x08,0x08,0x10,0xE0,0x00,0x00,0x00,0x31,0x22,0x22,0x11,0x0F,0x00},//925
+    {0x00,0x00,0x00,0xC0,0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x30,0x30,0x00,0x00,0x00},//:26
+    {0x00,0x00,0x00,0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x80,0x60,0x00,0x00,0x00,0x00},//;27
+    {0x00,0x00,0x80,0x40,0x20,0x10,0x08,0x00,0x00,0x01,0x02,0x04,0x08,0x10,0x20,0x00},//<28
+    {0x40,0x40,0x40,0x40,0x40,0x40,0x40,0x00,0x04,0x04,0x04,0x04,0x04,0x04,0x04,0x00},//=29
+    {0x00,0x08,0x10,0x20,0x40,0x80,0x00,0x00,0x00,0x20,0x10,0x08,0x04,0x02,0x01,0x00},//>30
+    {0x00,0x70,0x48,0x08,0x08,0x08,0xF0,0x00,0x00,0x00,0x00,0x30,0x36,0x01,0x00,0x00},//?31
+    {0xC0,0x30,0xC8,0x28,0xE8,0x10,0xE0,0x00,0x07,0x18,0x27,0x24,0x23,0x14,0x0B,0x00},//@32
+    {0x00,0x00,0xC0,0x38,0xE0,0x00,0x00,0x00,0x20,0x3C,0x23,0x02,0x02,0x27,0x38,0x20},//A33
+    {0x08,0xF8,0x88,0x88,0x88,0x70,0x00,0x00,0x20,0x3F,0x20,0x20,0x20,0x11,0x0E,0x00},//B34
+    {0xC0,0x30,0x08,0x08,0x08,0x08,0x38,0x00,0x07,0x18,0x20,0x20,0x20,0x10,0x08,0x00},//C35
+    {0x08,0xF8,0x08,0x08,0x08,0x10,0xE0,0x00,0x20,0x3F,0x20,0x20,0x20,0x10,0x0F,0x00},//D36
+    {0x08,0xF8,0x88,0x88,0xE8,0x08,0x10,0x00,0x20,0x3F,0x20,0x20,0x23,0x20,0x18,0x00},//E37
+    {0x08,0xF8,0x88,0x88,0xE8,0x08,0x10,0x00,0x20,0x3F,0x20,0x00,0x03,0x00,0x00,0x00},//F38
+    {0xC0,0x30,0x08,0x08,0x08,0x38,0x00,0x00,0x07,0x18,0x20,0x20,0x22,0x1E,0x02,0x00},//G39
+    {0x08,0xF8,0x08,0x00,0x00,0x08,0xF8,0x08,0x20,0x3F,0x21,0x01,0x01,0x21,0x3F,0x20},//H40
+    {0x00,0x08,0x08,0xF8,0x08,0x08,0x00,0x00,0x00,0x20,0x20,0x3F,0x20,0x20,0x00,0x00},//I41
+    {0x00,0x00,0x08,0x08,0xF8,0x08,0x08,0x00,0xC0,0x80,0x80,0x80,0x7F,0x00,0x00,0x00},//J42
+    {0x08,0xF8,0x88,0xC0,0x28,0x18,0x08,0x00,0x20,0x3F,0x20,0x01,0x26,0x38,0x20,0x00},//K43
+    {0x08,0xF8,0x08,0x00,0x00,0x00,0x00,0x00,0x20,0x3F,0x20,0x20,0x20,0x20,0x30,0x00},//L44
+    {0x08,0xF8,0xF8,0x00,0xF8,0xF8,0x08,0x00,0x20,0x3F,0x00,0x3F,0x00,0x3F,0x20,0x00},//M45
+    {0x08,0xF8,0x30,0xC0,0x00,0x08,0xF8,0x08,0x20,0x3F,0x20,0x00,0x07,0x18,0x3F,0x00},//N46
+    {0xE0,0x10,0x08,0x08,0x08,0x10,0xE0,0x00,0x0F,0x10,0x20,0x20,0x20,0x10,0x0F,0x00},//O47
+    {0x08,0xF8,0x08,0x08,0x08,0x08,0xF0,0x00,0x20,0x3F,0x21,0x01,0x01,0x01,0x00,0x00},//P48
+    {0xE0,0x10,0x08,0x08,0x08,0x10,0xE0,0x00,0x0F,0x18,0x24,0x24,0x38,0x50,0x4F,0x00},//Q49
+    {0x08,0xF8,0x88,0x88,0x88,0x88,0x70,0x00,0x20,0x3F,0x20,0x00,0x03,0x0C,0x30,0x20},//R50
+    {0x00,0x70,0x88,0x08,0x08,0x08,0x38,0x00,0x00,0x38,0x20,0x21,0x21,0x22,0x1C,0x00},//S51
+    {0x18,0x08,0x08,0xF8,0x08,0x08,0x18,0x00,0x00,0x00,0x20,0x3F,0x20,0x00,0x00,0x00},//T52
+    {0x08,0xF8,0x08,0x00,0x00,0x08,0xF8,0x08,0x00,0x1F,0x20,0x20,0x20,0x20,0x1F,0x00},//U53
+    {0x08,0x78,0x88,0x00,0x00,0xC8,0x38,0x08,0x00,0x00,0x07,0x38,0x0E,0x01,0x00,0x00},//V54
+    {0xF8,0x08,0x00,0xF8,0x00,0x08,0xF8,0x00,0x03,0x3C,0x07,0x00,0x07,0x3C,0x03,0x00},//W55
+    {0x08,0x18,0x68,0x80,0x80,0x68,0x18,0x08,0x20,0x30,0x2C,0x03,0x03,0x2C,0x30,0x20},//X56
+    {0x08,0x38,0xC8,0x00,0xC8,0x38,0x08,0x00,0x00,0x00,0x20,0x3F,0x20,0x00,0x00,0x00},//Y57
+    {0x10,0x08,0x08,0x08,0xC8,0x38,0x08,0x00,0x20,0x38,0x26,0x21,0x20,0x20,0x18,0x00},//Z58
+    {0x00,0x00,0x00,0xFE,0x02,0x02,0x02,0x00,0x00,0x00,0x00,0x7F,0x40,0x40,0x40,0x00},//[59
+    {0x00,0x0C,0x30,0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x06,0x38,0xC0,0x00},//\60
+    {0x00,0x02,0x02,0x02,0xFE,0x00,0x00,0x00,0x00,0x40,0x40,0x40,0x7F,0x00,0x00,0x00},//]61
+    {0x00,0x00,0x04,0x02,0x02,0x02,0x04,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00},//^62
+    {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x80,0x80,0x80,0x80,0x80,0x80,0x80,0x80},//_63
+    {0x00,0x02,0x02,0x04,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00},//`64
+    {0x00,0x00,0x80,0x80,0x80,0x80,0x00,0x00,0x00,0x19,0x24,0x22,0x22,0x22,0x3F,0x20},//a65
+    {0x08,0xF8,0x00,0x80,0x80,0x00,0x00,0x00,0x00,0x3F,0x11,0x20,0x20,0x11,0x0E,0x00},//b66
+    {0x00,0x00,0x00,0x80,0x80,0x80,0x00,0x00,0x00,0x0E,0x11,0x20,0x20,0x20,0x11,0x00},//c67
+    {0x00,0x00,0x00,0x80,0x80,0x88,0xF8,0x00,0x00,0x0E,0x11,0x20,0x20,0x10,0x3F,0x20},//d68
+    {0x00,0x00,0x80,0x80,0x80,0x80,0x00,0x00,0x00,0x1F,0x22,0x22,0x22,0x22,0x13,0x00},//e69
+    {0x00,0x80,0x80,0xF0,0x88,0x88,0x88,0x18,0x00,0x20,0x20,0x3F,0x20,0x20,0x00,0x00},//f70
+    {0x00,0x00,0x80,0x80,0x80,0x80,0x80,0x00,0x00,0x6B,0x94,0x94,0x94,0x93,0x60,0x00},//g71
+    {0x08,0xF8,0x00,0x80,0x80,0x80,0x00,0x00,0x20,0x3F,0x21,0x00,0x00,0x20,0x3F,0x20},//h72
+    {0x00,0x80,0x98,0x98,0x00,0x00,0x00,0x00,0x00,0x20,0x20,0x3F,0x20,0x20,0x00,0x00},//i73
+    {0x00,0x00,0x00,0x80,0x98,0x98,0x00,0x00,0x00,0xC0,0x80,0x80,0x80,0x7F,0x00,0x00},//j74
+    {0x08,0xF8,0x00,0x00,0x80,0x80,0x80,0x00,0x20,0x3F,0x24,0x02,0x2D,0x30,0x20,0x00},//k75
+    {0x00,0x08,0x08,0xF8,0x00,0x00,0x00,0x00,0x00,0x20,0x20,0x3F,0x20,0x20,0x00,0x00},//l76
+    {0x80,0x80,0x80,0x80,0x80,0x80,0x80,0x00,0x20,0x3F,0x20,0x00,0x3F,0x20,0x00,0x3F},//m77
+    {0x80,0x80,0x00,0x80,0x80,0x80,0x00,0x00,0x20,0x3F,0x21,0x00,0x00,0x20,0x3F,0x20},//n78
+    {0x00,0x00,0x80,0x80,0x80,0x80,0x00,0x00,0x00,0x1F,0x20,0x20,0x20,0x20,0x1F,0x00},//o79
+    {0x80,0x80,0x00,0x80,0x80,0x00,0x00,0x00,0x80,0xFF,0xA1,0x20,0x20,0x11,0x0E,0x00},//p80
+    {0x00,0x00,0x00,0x80,0x80,0x80,0x80,0x00,0x00,0x0E,0x11,0x20,0x20,0xA0,0xFF,0x80},//q81
+    {0x80,0x80,0x80,0x00,0x80,0x80,0x80,0x00,0x20,0x20,0x3F,0x21,0x20,0x00,0x01,0x00},//r82
+    {0x00,0x00,0x80,0x80,0x80,0x80,0x80,0x00,0x00,0x33,0x24,0x24,0x24,0x24,0x19,0x00},//s83
+    {0x00,0x80,0x80,0xE0,0x80,0x80,0x00,0x00,0x00,0x00,0x00,0x1F,0x20,0x20,0x00,0x00},//t84
+    {0x80,0x80,0x00,0x00,0x00,0x80,0x80,0x00,0x00,0x1F,0x20,0x20,0x20,0x10,0x3F,0x20},//u85
+    {0x80,0x80,0x80,0x00,0x00,0x80,0x80,0x80,0x00,0x01,0x0E,0x30,0x08,0x06,0x01,0x00},//v86
+    {0x80,0x80,0x00,0x80,0x00,0x80,0x80,0x80,0x0F,0x30,0x0C,0x03,0x0C,0x30,0x0F,0x00},//w87
+    {0x00,0x80,0x80,0x00,0x80,0x80,0x80,0x00,0x00,0x20,0x31,0x2E,0x0E,0x31,0x20,0x00},//x88
+    {0x80,0x80,0x80,0x00,0x00,0x80,0x80,0x80,0x80,0x81,0x8E,0x70,0x18,0x06,0x01,0x00},//y89
+    {0x00,0x80,0x80,0x80,0x80,0x80,0x80,0x00,0x00,0x21,0x30,0x2C,0x22,0x21,0x30,0x00},//z90
+    {0x00,0x00,0x00,0x00,0x80,0x7C,0x02,0x02,0x00,0x00,0x00,0x00,0x00,0x3F,0x40,0x40},//{91
+    {0x00,0x00,0x00,0x00,0xFF,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xFF,0x00,0x00,0x00},//|92
+    {0x00,0x02,0x02,0x7C,0x80,0x00,0x00,0x00,0x00,0x40,0x40,0x3F,0x00,0x00,0x00,0x00},//}93
+    {0x00,0x06,0x01,0x01,0x02,0x02,0x04,0x04,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00},//~94
+};      
+const unsigned char hz_1616[][32]={
+{0x02,0x00,0x02,0x00,0xE2,0xFF,0x22,0x42,0x22,0x42,0x32,0x42,0x2A,0x42,0x26,0x42,0x22,0x42,0x22,0x42,0x22,0x42,0x22,0x42,0xE2,0xFF,0x02,0x00,0x02,0x00,0x00,0x00},/*"百",0*/
+{0x00,0x00,0xF8,0xFF,0x01,0x00,0x02,0x00,0x00,0x00,0xE2,0x1F,0x22,0x08,0x22,0x08,0x22,0x08,0xE2,0x1F,0x02,0x00,0x02,0x40,0x02,0x80,0xFE,0x7F,0x00,0x00,0x00,0x00},/*"问",1*/
+{0x00,0x00,0xFE,0xFF,0x02,0x10,0x22,0x08,0x42,0x06,0x82,0x01,0x72,0x0E,0x02,0x10,0x22,0x08,0x42,0x06,0x82,0x01,0x72,0x4E,0x02,0x80,0xFE,0x7F,0x00,0x00,0x00,0x00},/*"网",2*/
+};
+#endif
diff --git a/IMX6ULL/source/11_SPI/10_oled_framebuffer_ok/oled_drv.c b/IMX6ULL/source/11_SPI/10_oled_framebuffer_ok/oled_drv.c
new file mode 100644
index 0000000..5206e30
--- /dev/null
+++ b/IMX6ULL/source/11_SPI/10_oled_framebuffer_ok/oled_drv.c
@@ -0,0 +1,490 @@
+/*
+ * Simple synchronous userspace interface to SPI devices
+ *
+ * Copyright (C) 2006 SWAPP
+ *	Andrea Paterniani <a.paterniani@swapp-eng.it>
+ * Copyright (C) 2007 David Brownell (simplification, cleanup)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/ioctl.h>
+#include <linux/fs.h>
+#include <linux/device.h>
+#include <linux/err.h>
+#include <linux/list.h>
+#include <linux/errno.h>
+#include <linux/mutex.h>
+#include <linux/slab.h>
+#include <linux/compat.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/acpi.h>
+
+#include <linux/spi/spi.h>
+#include <linux/spi/spidev.h>
+
+#include <linux/uaccess.h>
+#include <linux/gpio/consumer.h>
+
+#include <linux/fb.h>
+#include <linux/dma-mapping.h>
+#include <linux/kthread.h>
+
+#define OLED_IOC_INIT 			123
+#define OLED_IOC_SET_POS 		124
+
+//为0 表示命令，为1表示数据
+#define OLED_CMD 	0
+#define OLED_DATA 	1
+
+static struct fb_info *myfb_info;
+
+static unsigned int pseudo_palette[16];
+
+static struct task_struct *oled_thread;
+
+static unsigned char *oled_buf; //[1024];
+
+/* from pxafb.c */
+static inline unsigned int chan_to_field(unsigned int chan,
+					 struct fb_bitfield *bf)
+{
+	chan &= 0xffff;
+	chan >>= 16 - bf->length;
+	return chan << bf->offset;
+}
+
+static int mylcd_setcolreg(unsigned regno,
+			       unsigned red, unsigned green, unsigned blue,
+			       unsigned transp, struct fb_info *info)
+{
+	unsigned int val;
+
+	/* dprintk("setcol: regno=%d, rgb=%d,%d,%d\n",
+		   regno, red, green, blue); */
+
+	switch (info->fix.visual) {
+	case FB_VISUAL_TRUECOLOR:
+		/* true-colour, use pseudo-palette */
+
+		if (regno < 16) {
+			u32 *pal = info->pseudo_palette;
+
+			val  = chan_to_field(red,   &info->var.red);
+			val |= chan_to_field(green, &info->var.green);
+			val |= chan_to_field(blue,  &info->var.blue);
+
+			pal[regno] = val;
+		}
+		break;
+
+	default:
+		return 1;	/* unknown type */
+	}
+
+	return 0;
+}
+
+
+static struct fb_ops myfb_ops = {
+	.owner		= THIS_MODULE,
+	.fb_setcolreg	= mylcd_setcolreg,
+	.fb_fillrect	= cfb_fillrect,
+	.fb_copyarea	= cfb_copyarea,
+	.fb_imageblit	= cfb_imageblit,
+};
+
+
+
+/*-------------------------------------------------------------------------*/
+
+static struct spi_device *oled;
+static int major;
+static struct gpio_desc *dc_gpio;
+
+static void dc_pin_init(void)
+{
+	gpiod_direction_output(dc_gpio, 1);
+}
+
+static void oled_set_dc_pin(int val)
+{
+	gpiod_set_value(dc_gpio, val);
+}
+
+static void spi_write_datas(const unsigned char *buf, int len)
+{
+	spi_write(oled, buf, len);
+}
+
+
+/**********************************************************************
+	 * 函数名称： oled_write_cmd
+	 * 功能描述： oled向特定地址写入数据或者命令
+	 * 输入参数：@uc_data :要写入的数据
+	 			@uc_cmd:为1则表示写入数据，为0表示写入命令
+	 * 输出参数：无
+	 * 返 回 值： 无
+	 * 修改日期 	   版本号	 修改人		  修改内容
+	 * -----------------------------------------------
+	 * 2020/03/04		 V1.0	  芯晓		  创建
+ ***********************************************************************/
+static void oled_write_cmd_data(unsigned char uc_data,unsigned char uc_cmd)
+{
+	if(uc_cmd==0)
+	{
+		oled_set_dc_pin(0);
+	}
+	else
+	{
+		oled_set_dc_pin(1);//拉高，表示写入数据
+	}
+	spi_write_datas(&uc_data, 1);//写入
+}
+
+
+/**********************************************************************
+	 * 函数名称： oled_init
+	 * 功能描述： oled_init的初始化，包括SPI控制器得初始化
+	 * 输入参数：无
+	 * 输出参数： 初始化的结果
+	 * 返 回 值： 成功则返回0，否则返回-1
+	 * 修改日期 	   版本号	 修改人		  修改内容
+	 * -----------------------------------------------
+	 * 2020/03/15		 V1.0	  芯晓		  创建
+ ***********************************************************************/
+static int oled_init(void)
+{
+	oled_write_cmd_data(0xae,OLED_CMD);//关闭显示
+
+	oled_write_cmd_data(0x00,OLED_CMD);//设置 lower column address
+	oled_write_cmd_data(0x10,OLED_CMD);//设置 higher column address
+
+	oled_write_cmd_data(0x40,OLED_CMD);//设置 display start line
+
+	oled_write_cmd_data(0xB0,OLED_CMD);//设置page address
+
+	oled_write_cmd_data(0x81,OLED_CMD);// contract control
+	oled_write_cmd_data(0x66,OLED_CMD);//128
+
+	oled_write_cmd_data(0xa1,OLED_CMD);//设置 segment remap
+
+	oled_write_cmd_data(0xa6,OLED_CMD);//normal /reverse
+
+	oled_write_cmd_data(0xa8,OLED_CMD);//multiple ratio
+	oled_write_cmd_data(0x3f,OLED_CMD);//duty = 1/64
+
+	oled_write_cmd_data(0xc8,OLED_CMD);//com scan direction
+
+	oled_write_cmd_data(0xd3,OLED_CMD);//set displat offset
+	oled_write_cmd_data(0x00,OLED_CMD);//
+
+	oled_write_cmd_data(0xd5,OLED_CMD);//set osc division
+	oled_write_cmd_data(0x80,OLED_CMD);//
+
+	oled_write_cmd_data(0xd9,OLED_CMD);//ser pre-charge period
+	oled_write_cmd_data(0x1f,OLED_CMD);//
+
+	oled_write_cmd_data(0xda,OLED_CMD);//set com pins
+	oled_write_cmd_data(0x12,OLED_CMD);//
+
+	oled_write_cmd_data(0xdb,OLED_CMD);//set vcomh
+	oled_write_cmd_data(0x30,OLED_CMD);//
+
+	oled_write_cmd_data(0x8d,OLED_CMD);//set charge pump disable 
+	oled_write_cmd_data(0x14,OLED_CMD);//
+
+	oled_write_cmd_data(0xaf,OLED_CMD);//set dispkay on
+
+	return 0;
+}		  			 		  						  					  				 	   		  	  	 	  
+
+//坐标设置
+/**********************************************************************
+	 * 函数名称： OLED_DIsp_Set_Pos
+	 * 功能描述：设置要显示的位置
+	 * 输入参数：@ x ：要显示的column address
+	 			@y :要显示的page address
+	 * 输出参数： 无
+	 * 返 回 值： 
+	 * 修改日期 	   版本号	 修改人		  修改内容
+	 * -----------------------------------------------
+	 * 2020/03/15		 V1.0	  芯晓		  创建
+ ***********************************************************************/
+static void OLED_DIsp_Set_Pos(int x, int y)
+{ 	oled_write_cmd_data(0xb0+y,OLED_CMD);
+	oled_write_cmd_data((x&0x0f),OLED_CMD); 
+	oled_write_cmd_data(((x&0xf0)>>4)|0x10,OLED_CMD);
+}   	      	   			 
+
+
+static long
+spidev_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
+{
+	int x, y;
+	
+	/* 根据cmd操作硬件 */
+	switch (cmd)
+	{
+		case OLED_IOC_INIT: /* init */
+		{
+			dc_pin_init();
+			oled_init();
+			break;
+		}
+
+		case OLED_IOC_SET_POS: /* set pos */
+		{
+			x = arg & 0xff;
+			y = (arg >> 8) & 0xff;
+			OLED_DIsp_Set_Pos(x, y);
+			break;
+		}
+
+	}
+
+	return 0;
+}
+
+static ssize_t
+spidev_write(struct file *filp, const char __user *buf,
+		size_t count, loff_t *f_pos)
+{
+	char *ker_buf;
+	int err;
+
+	ker_buf = kmalloc(count, GFP_KERNEL);
+	err = copy_from_user(ker_buf, buf, count);
+	
+	oled_set_dc_pin(1);//拉高，表示写入数据
+	spi_write_datas(ker_buf, count);
+	kfree(ker_buf);
+	return count;
+}
+
+static const struct file_operations spidev_fops = {
+	.owner =	THIS_MODULE,
+	/* REVISIT switch to aio primitives, so that userspace
+	 * gets more complete API coverage.  It'll simplify things
+	 * too, except for the locking.
+	 */
+	.write =	spidev_write,
+	.unlocked_ioctl = spidev_ioctl,
+};
+
+/*-------------------------------------------------------------------------*/
+
+/* The main reason to have this class is to make mdev/udev create the
+ * /dev/spidevB.C character device nodes exposing our userspace API.
+ * It also simplifies memory management.
+ */
+
+static struct class *spidev_class;
+
+static const struct of_device_id spidev_dt_ids[] = {
+	{ .compatible = "100ask,oled" },
+	{},
+};
+
+
+
+static int oled_thread_func(void *param)
+{
+	unsigned char *p[8];
+	unsigned char data[8];
+	int i;
+	int j;
+	int line;
+	int bit;
+	unsigned char byte;
+	unsigned char *fb  = myfb_info->screen_base;
+	int k;
+	
+	while (!kthread_should_stop()) 
+	{
+		/* 1. 从Framebuffer得到数据 */
+		/* 2. 转换格式 */
+		k = 0;
+		for (i = 0; i < 8; i++)
+		{
+			for (line = 0; line < 8; line++)
+				p[line] = &fb[i*128 + line * 16];
+			
+			for (j = 0; j < 16; j++)
+			{
+				for (line = 0; line < 8; line++)
+				{
+					data[line] = *p[line];
+					p[line] += 1;
+				}
+
+				for (bit = 0; bit < 8; bit++)
+				{
+					byte =  (((data[0]>>bit) & 1) << 0) |
+							(((data[1]>>bit) & 1) << 1) |
+							(((data[2]>>bit) & 1) << 2) |
+							(((data[3]>>bit) & 1) << 3) |
+							(((data[4]>>bit) & 1) << 4) |
+							(((data[5]>>bit) & 1) << 5) |
+							(((data[6]>>bit) & 1) << 6) |
+							(((data[7]>>bit) & 1) << 7);
+
+					oled_buf[k++] = byte;
+				}
+				
+			}
+		}
+		
+
+		/* 3. 通过SPI发送给OLED */
+		for (i = 0; i < 8; i++)
+		{
+			OLED_DIsp_Set_Pos(0, i);
+			oled_set_dc_pin(1);
+			spi_write_datas(&oled_buf[i*128], 128);
+		}
+		
+		
+		/* 4. 休眠一会 */
+		schedule_timeout_interruptible(HZ);
+	}
+	return 0;
+}
+
+
+/*-------------------------------------------------------------------------*/
+
+static int spidev_probe(struct spi_device *spi)
+{
+	dma_addr_t phy_addr;
+	
+	/* 1. 记录spi_device */
+	oled = spi;
+
+	/* 2. 注册字符设备 */
+	major = register_chrdev(0, "100ask_oled", &spidev_fops);
+	spidev_class = class_create(THIS_MODULE, "100ask_oled");
+	device_create(spidev_class, NULL, MKDEV(major, 0), NULL, "100ask_oled");	
+
+	/* 3. 获得GPIO引脚 */
+	dc_gpio = gpiod_get(&spi->dev, "dc", 0);
+
+	
+
+	/* A. 分配fb_info */
+	myfb_info = framebuffer_alloc(0, NULL);
+
+	/* B. 设置fb_info */
+	/* B.1 var : LCD分辨率、颜色格式 */
+	myfb_info->var.xres_virtual = myfb_info->var.xres = 128;
+	myfb_info->var.yres_virtual = myfb_info->var.yres = 64;
+	
+	myfb_info->var.bits_per_pixel = 1;  /* rgb565 */	
+
+	/* B.2 fix */
+	strcpy(myfb_info->fix.id, "100ask_oled");
+	myfb_info->fix.smem_len = myfb_info->var.xres * myfb_info->var.yres * myfb_info->var.bits_per_pixel / 8;
+
+	myfb_info->flags |= FBINFO_MODULE; /* 禁止显示LOGO */
+
+
+	/* fb的虚拟地址 */
+	myfb_info->screen_base = dma_alloc_wc(NULL, myfb_info->fix.smem_len, &phy_addr,
+					 GFP_KERNEL);
+	myfb_info->fix.smem_start = phy_addr;  /* fb的物理地址 */
+	
+	myfb_info->fix.type = FB_TYPE_PACKED_PIXELS;
+	myfb_info->fix.visual = FB_VISUAL_MONO10;
+
+	myfb_info->fix.line_length = myfb_info->var.xres * myfb_info->var.bits_per_pixel / 8;	
+
+	/* c. fbops */
+	myfb_info->fbops = &myfb_ops;
+	myfb_info->pseudo_palette = pseudo_palette;
+
+
+	/* C. 注册fb_info */
+	register_framebuffer(myfb_info);
+
+	/* D. 创建内核线程 */
+	oled_buf = kmalloc(1024, GFP_KERNEL);
+	dc_pin_init();
+	oled_init();
+	
+ 	oled_thread = kthread_run(oled_thread_func, NULL, "oled_kthead");
+
+	return 0;
+}
+
+static int spidev_remove(struct spi_device *spi)
+{
+	kthread_stop(oled_thread);
+	kfree(oled_buf);
+	
+	/* A. 反注册fb_info */
+	unregister_framebuffer(myfb_info);
+
+	/* B. 释放内存 */
+	dma_free_wc(NULL, myfb_info->fix.smem_len, myfb_info->screen_base,
+		    myfb_info->fix.smem_start);
+
+	/* C. 释放fb_info */
+	framebuffer_release(myfb_info);
+	
+	gpiod_put(dc_gpio);
+	
+	/* 反注册字符设 */
+	device_destroy(spidev_class, MKDEV(major, 0));
+	class_destroy(spidev_class);
+	unregister_chrdev(major, "100ask_oled");
+
+	return 0;
+}
+
+static struct spi_driver spidev_spi_driver = {
+	.driver = {
+		.name =		"100ask_spi_oled_drv",
+		.of_match_table = of_match_ptr(spidev_dt_ids),
+	},
+	.probe =	spidev_probe,
+	.remove =	spidev_remove,
+
+	/* NOTE:  suspend/resume methods are not necessary here.
+	 * We don't do anything except pass the requests to/from
+	 * the underlying controller.  The refrigerator handles
+	 * most issues; the controller driver handles the rest.
+	 */
+};
+
+/*-------------------------------------------------------------------------*/
+
+static int __init spidev_init(void)
+{
+	int status;
+
+	status = spi_register_driver(&spidev_spi_driver);
+	if (status < 0) {
+	}
+	return status;
+}
+module_init(spidev_init);
+
+static void __exit spidev_exit(void)
+{
+	spi_unregister_driver(&spidev_spi_driver);
+}
+module_exit(spidev_exit);
+
+MODULE_LICENSE("GPL");
+
diff --git a/IMX6ULL/source/11_SPI/10_oled_framebuffer_ok/spi_oled.c b/IMX6ULL/source/11_SPI/10_oled_framebuffer_ok/spi_oled.c
new file mode 100644
index 0000000..98810de
--- /dev/null
+++ b/IMX6ULL/source/11_SPI/10_oled_framebuffer_ok/spi_oled.c
@@ -0,0 +1,241 @@
+#include <stdio.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <fcntl.h>
+#include <string.h>
+
+#include <sys/ioctl.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#include <linux/types.h>
+#include <linux/spi/spidev.h>
+
+#include "font.h"
+
+#define OLED_IOC_INIT 			123
+#define OLED_IOC_SET_POS 		124
+
+
+//为0 表示命令，为1表示数据
+#define OLED_CMD 	0
+#define OLED_DATA 	1
+
+static int fd_spidev;
+static int dc_pin_num;
+
+
+void OLED_DIsp_Set_Pos(int x, int y);
+
+void oled_write_datas(const unsigned char *buf, int len)
+{
+	write(fd_spidev, buf, len);
+}
+
+		  			 		  						  					  				 	   		  	  	 	  		  			 		  						  					  				 	   		  	  	 	  
+
+/**********************************************************************
+	 * 函数名称： OLED_DIsp_Clear
+	 * 功能描述： 整个屏幕显示数据清0
+	 * 输入参数：无
+	 * 输出参数： 无
+	 * 返 回 值： 
+	 * 修改日期 	   版本号	 修改人		  修改内容
+	 * -----------------------------------------------
+	 * 2020/03/15		 V1.0	  芯晓		  创建
+ ***********************************************************************/
+void OLED_DIsp_Clear(void)  
+{
+    unsigned char x, y;
+	char buf[128];
+
+	memset(buf, 0, 128);
+	
+    for (y = 0; y < 8; y++)
+    {
+        OLED_DIsp_Set_Pos(0, y);
+        oled_write_datas(buf, 128);
+    }
+}
+
+/**********************************************************************
+	 * 函数名称： OLED_DIsp_All
+	 * 功能描述： 整个屏幕显示全部点亮，可以用于检查坏点
+	 * 输入参数：无
+	 * 输出参数：无 
+	 * 返 回 值：
+	 * 修改日期 	   版本号	 修改人		  修改内容
+	 * -----------------------------------------------
+	 * 2020/03/15		 V1.0	  芯晓		  创建
+ ***********************************************************************/
+void OLED_DIsp_All(void)  
+{
+    unsigned char x, y;
+	char buf[128];
+
+	memset(buf, 0xff, 128);
+	
+    for (y = 0; y < 8; y++)
+    {
+        OLED_DIsp_Set_Pos(0, y);
+        oled_write_datas(buf, 128);
+    }
+
+
+
+}
+
+//坐标设置
+/**********************************************************************
+	 * 函数名称： OLED_DIsp_Set_Pos
+	 * 功能描述：设置要显示的位置
+	 * 输入参数：@ x ：要显示的column address
+	 			@y :要显示的page address
+	 * 输出参数： 无
+	 * 返 回 值： 
+	 * 修改日期 	   版本号	 修改人		  修改内容
+	 * -----------------------------------------------
+	 * 2020/03/15		 V1.0	  芯晓		  创建
+ ***********************************************************************/
+void OLED_DIsp_Set_Pos(int x, int y)
+{ 	
+	ioctl(fd_spidev, OLED_IOC_SET_POS, x  | (y << 8));
+}   	      	   			 
+/**********************************************************************
+	  * 函数名称： OLED_DIsp_Char
+	  * 功能描述：在某个位置显示字符 1-9
+	  * 输入参数：@ x ：要显示的column address
+		 			@y :要显示的page address
+		 			@c ：要显示的字符的ascii码
+	  * 输出参数： 无
+	  * 返 回 值： 
+	  * 修改日期		版本号	  修改人 	   修改内容
+	  * -----------------------------------------------
+	  * 2020/03/15		  V1.0	   芯晓		   创建
+***********************************************************************/
+void OLED_DIsp_Char(int x, int y, unsigned char c)
+{
+	int i = 0;
+	/* 得到字模 */
+	const unsigned char *dots = oled_asc2_8x16[c - ' '];
+
+	/* 发给OLED */
+	OLED_DIsp_Set_Pos(x, y);
+	/* 发出8字节数据 */
+	//for (i = 0; i < 8; i++)
+	//	oled_write_cmd_data(dots[i], OLED_DATA);
+	oled_write_datas(&dots[0], 8);
+
+	OLED_DIsp_Set_Pos(x, y+1);
+	/* 发出8字节数据 */
+	//for (i = 0; i < 8; i++)
+		//oled_write_cmd_data(dots[i+8], OLED_DATA);
+	oled_write_datas(&dots[8], 8);
+}
+
+
+/**********************************************************************
+	 * 函数名称： OLED_DIsp_String
+	 * 功能描述： 在指定位置显示字符串
+	 * 输入参数：@ x ：要显示的column address
+		 			@y :要显示的page address
+		 			@str ：要显示的字符串
+	 * 输出参数： 无
+	 * 返 回 值： 无
+	 * 修改日期 	   版本号	 修改人		  修改内容
+	 * -----------------------------------------------
+	 * 2020/03/15		 V1.0	  芯晓		  创建
+***********************************************************************/
+void OLED_DIsp_String(int x, int y, char *str)
+{
+	unsigned char j=0;
+	while (str[j])
+	{		
+		OLED_DIsp_Char(x, y, str[j]);//显示单个字符
+		x += 8;
+		if(x > 127)
+		{
+			x = 0;
+			y += 2;
+		}//移动显示位置
+		j++;
+	}
+}
+/**********************************************************************
+	 * 函数名称： OLED_DIsp_CHinese
+	 * 功能描述：在指定位置显示汉字
+	 * 输入参数：@ x ：要显示的column address
+		 			@y :要显示的page address
+		 			@chr ：要显示的汉字，三个汉字“百问网”中选择一个
+	 * 输出参数： 无
+	 * 返 回 值： 无
+	 * 修改日期 	   版本号	 修改人		  修改内容
+	 * -----------------------------------------------
+	 * 2020/03/15		 V1.0	  芯晓		  创建
+ ***********************************************************************/
+
+void OLED_DIsp_CHinese(unsigned char x,unsigned char y,unsigned char no)
+{      			    
+	unsigned char t,adder=0;
+	OLED_DIsp_Set_Pos(x,y);	
+    for(t=0;t<16;t++)
+	{//显示上半截字符	
+		oled_write_datas(&hz_1616[no][t*2], 1);
+		adder+=1;
+    }	
+	OLED_DIsp_Set_Pos(x,y+1);	
+    for(t=0;t<16;t++)
+	{//显示下半截字符
+		oled_write_datas(&hz_1616[no][t*2+1], 1);
+		adder+=1;
+    }					
+}
+/**********************************************************************
+	 * 函数名称： OLED_DIsp_Test
+	 * 功能描述： 整个屏幕显示测试
+	 * 输入参数：无
+	 * 输出参数： 无
+	 * 返 回 值： 无
+	 * 修改日期 	   版本号	 修改人		  修改内容
+	 * -----------------------------------------------
+	 * 2020/03/15		 V1.0	  芯晓		  创建
+ ***********************************************************************/
+void OLED_DIsp_Test(void)
+{ 	
+	int i;
+	
+	OLED_DIsp_String(0, 0, "wiki.100ask.net");
+	OLED_DIsp_String(0, 2, "book.100ask.net");
+	OLED_DIsp_String(0, 4, "bbs.100ask.net");
+	
+	for(i = 0; i < 3; i++)
+	{   //显示汉字 百问网
+		OLED_DIsp_CHinese(32+i*16, 6, i);
+	}
+} 
+
+/* spi_oled /dev/100ask_oled */
+int main(int argc, char **argv)
+{	
+	if (argc != 2)
+	{
+		printf("Usage: %s /dev/100ask_oled\n", argv[0]);
+		return -1;
+	}
+
+	fd_spidev = open(argv[1], O_RDWR);
+	if (fd_spidev < 0) {
+		printf("open %s err\n", argv[1]);
+		return -1;
+	}
+
+
+	ioctl(fd_spidev, OLED_IOC_INIT);
+
+	OLED_DIsp_Clear();
+	
+	OLED_DIsp_Test();
+
+	return 0;
+}
+
diff --git a/IMX6ULL/source/11_SPI/10_oled_framebuffer_ok/spi_oled.h b/IMX6ULL/source/11_SPI/10_oled_framebuffer_ok/spi_oled.h
new file mode 100644
index 0000000..692b290
--- /dev/null
+++ b/IMX6ULL/source/11_SPI/10_oled_framebuffer_ok/spi_oled.h
@@ -0,0 +1,17 @@
+#ifndef _OLED_H_
+#define _OLED_H_
+
+void oled_write_cmd_data(unsigned char uc_data,unsigned char uc_cmd);
+int oled_init(void);
+int oled_fill_data(unsigned char fill_Data);
+void OLED_DIsp_Clear(void);
+void OLED_DIsp_All(void);
+void OLED_DIsp_Set_Pos(int x, int y);
+void OLED_DIsp_Char(int x, int y, unsigned char c);
+void OLED_DIsp_String(int x, int y, char *str);
+void OLED_DIsp_CHinese(unsigned char x,unsigned char y,unsigned char no);
+void OLED_DIsp_Test();
+
+		  			 		  						  					  				 	   		  	  	 	  
+#endif
+
diff --git a/README.md b/README.md
index 532868f..9cfc445 100644
--- a/README.md
+++ b/README.md
@@ -571,6 +571,12 @@ git clone https://e.coding.net/weidongshan/linux/doc_and_source_for_drivers.git
   16_使用Framebuffer改造OLED驱动
   ```
   
+* 2021.05.13 发布"SPI子系统"：
+  
+  ```shell
+  17_OLED_Framebuffer驱动_上机实验
+  ```
+  
   
   
   
diff --git a/STM32MP157/doc_pic/11_SPI/17_OLED_Framebuffer驱动_上机实验.md b/STM32MP157/doc_pic/11_SPI/17_OLED_Framebuffer驱动_上机实验.md
new file mode 100644
index 0000000..2134516
--- /dev/null
+++ b/STM32MP157/doc_pic/11_SPI/17_OLED_Framebuffer驱动_上机实验.md
@@ -0,0 +1,242 @@
+# OLED_Framebuffer驱动_上机实验 #
+
+* 源码:
+
+  ![image-20220509140847199](pic/79_src_for_framebuffer_ok.png)
+  
+* DMA参考文章：https://www.kernel.org/doc/html/latest/core-api/dma-api-howto.html
+
+## 1. 硬件
+
+### 1.1 原理图
+
+IMX6ULL:
+
+![image-20220316120535482](pic/47_imx6ull_oled_sch.png)
+
+STM32MP157:
+
+![image-20220316120427564](pic/48_stm32mp157_oled_sch.png)
+
+
+
+原理图：
+
+![image-20220314114847437](pic/49_oled_sch.png)
+
+
+
+### 1.2 连接
+
+无论是使用IMX6ULL开发板还是STM32MP157开发板，都有类似的扩展板。把OLED模块接到扩展板的SPI_A插座上，如下：
+
+![image-20220314115446373](pic/50_oled_on_extend_brd.png)
+
+
+
+
+
+## 2. 编写设备树
+
+### 2.1.1 IMX6ULL
+
+![](pic/44_imx6ull_pro_extend_spi_a.png)
+
+DC引脚使用GPIO4_20，也需在设备树里指定。
+
+设备树如下：arch/arm/boot/dts/100ask_imx6ull-14x14.dts
+
+```shell
+&ecspi1 {
+    pinctrl-names = "default";
+    pinctrl-0 = <&pinctrl_ecspi1>;
+
+    fsl,spi-num-chipselects = <2>;
+    cs-gpios = <&gpio4 26 GPIO_ACTIVE_LOW>, <&gpio4 24 GPIO_ACTIVE_LOW>;
+    status = "okay";
+
+    oled: oled {
+        compatible = "100ask,oled";
+        reg = <0>;
+        spi-max-frequency = <10000000>;
+        dc-gpios = <&gpio4 20 GPIO_ACTIVE_HIGH>; 
+    };
+};
+```
+
+
+
+
+
+### 2.1.2 STM32MP157
+
+![](pic/45_stm32mp157_pro_extend_spi_a.png)
+
+DC引脚使用GPIOA_13，也需要在设备树里指定。
+
+设备树如下：`arch/arm/boot/dts/stm32mp157c-100ask-512d-lcd-v1.dts`
+
+```shell
+&spi5 {
+        pinctrl-names = "default", "sleep";
+        pinctrl-0 = <&spi5_pins_a>;
+        pinctrl-1 = <&spi5_sleep_pins_a>;
+        status = "okay";
+        cs-gpios = <&gpioh 5 GPIO_ACTIVE_LOW>, <&gpioz 4 GPIO_ACTIVE_LOW>;
+        spidev: icm20608@0{
+                compatible = "invensense,icm20608";
+                interrupts = <0 IRQ_TYPE_EDGE_FALLING>;
+                interrupt-parent = <&gpioz>;
+                spi-max-frequency = <8000000>;
+                reg = <0>;
+        };
+        oled: oled@1{
+                compatible = "100ask,oled";
+                spi-max-frequency = <10000000>;
+                reg = <1>;
+                dc-gpios = <&gpioa 13 GPIO_ACTIVE_HIGH>;
+        };
+};
+```
+
+
+
+## 3. 编译替换设备树
+
+### 3.1 IMX6ULL
+
+#### 3.1.1 设置工具链
+
+```shell
+export ARCH=arm
+export CROSS_COMPILE=arm-buildroot-linux-gnueabihf-
+ export PATH=$PATH:/home/book/100ask_imx6ull-sdk/ToolChain/arm-buildroot-linux-gnueabihf_sdk-buildroot/bin
+```
+
+
+#### 3.1.2 编译、替换设备树
+
+  * 编译设备树：
+    在Ubuntu的IMX6ULL内核目录下执行如下命令,
+    得到设备树文件：`arch/arm/boot/dts/100ask_imx6ull-14x14.dtb`
+
+    ```shell
+    make dtbs
+    ```
+
+  * 复制到NFS目录：
+
+    ```shell
+    $ cp arch/arm/boot/dts/100ask_imx6ull-14x14.dtb ~/nfs_rootfs/
+    ```
+
+  * 开发板上挂载NFS文件系统
+
+    ```shell
+    [root@100ask:~]#  mount -t nfs -o nolock,vers=3 192.168.1.137:/home/book/nfs_rootfs /mnt
+    ```
+
+* 更新设备树
+
+    ```shell
+    [root@100ask:~]# cp /mnt/100ask_imx6ull-14x14.dtb /boot
+    [root@100ask:~]# sync
+    ```
+
+* 重启开发板
+
+
+
+### 3.2 STM32MP157
+
+#### 3.2.1 设置工具链
+
+```shell
+export ARCH=arm
+export CROSS_COMPILE=arm-buildroot-linux-gnueabihf-
+export PATH=$PATH:/home/book/100ask_stm32mp157_pro-sdk/ToolChain/arm-buildroot-linux-gnueabihf_sdk-buildroot/bin
+```
+
+
+#### 3.2.2 编译、替换设备树
+
+  * 编译设备树：
+    在Ubuntu的STM32MP157内核目录下执行如下命令,
+    得到设备树文件：`arch/arm/boot/dts/stm32mp157c-100ask-512d-lcd-v1.dtb`
+
+    ```shell
+    make dtbs
+    ```
+
+  * 复制到NFS目录：
+
+    ```shell
+    $ cp arch/arm/boot/dts/stm32mp157c-100ask-512d-lcd-v1.dtb ~/nfs_rootfs/
+    ```
+
+  * 开发板上挂载NFS文件系统
+
+    ```shell
+    [root@100ask:~]#  mount -t nfs -o nolock,vers=3 192.168.1.137:/home/book/nfs_rootfs /mnt
+    ```
+
+* 确定设备树分区挂载在哪里
+
+  由于版本变化，STM32MP157单板上烧录的系统可能有细微差别。
+  在开发板上执行`cat /proc/mounts`后，可以得到两种结果(见下图)：
+
+  * mmcblk2p2分区挂载在/boot目录下(下图左边)：无需特殊操作，下面把文件复制到/boot目录即可
+
+  * mmcblk2p2挂载在/mnt目录下(下图右边)
+
+    * 在视频里、后面文档里，都是更新/boot目录下的文件，所以要先执行以下命令重新挂载：
+      * `mount  /dev/mmcblk2p2  /boot`
+
+    ![](pic/46_boot_mount.png)
+
+* 更新设备树
+
+  ```shell
+  [root@100ask:~]# cp /mnt/stm32mp157c-100ask-512d-lcd-v1.dtb /boot/
+  [root@100ask:~]# sync
+  ```
+
+* 重启开发板
+
+
+
+## 4. 编译OLED驱动
+
+```shell
+cd 10_oled_framebuffer_ok
+make
+```
+
+
+
+## 5. 编译APP
+
+```shell
+cd  10_oled_framebuffer_ok/03_freetype_show_font_angle
+make
+```
+
+
+
+
+
+## 6. 上机实验
+
+```shell
+1. 安装驱动程序, 确定新出现哪个设备节点
+ls /dev/fb*
+insmod oled_drv.ko
+ls /dev/fb*
+
+2. 在IMX6ULL上运行测试程序
+./freetype_show_font_angle  /dev/fb2 ./simsun.ttc 0 20
+
+2. 在STM32MP157上运行测试程序
+./freetype_show_font_angle  /dev/fb1 ./simsun.ttc 0 20
+```
+
diff --git a/STM32MP157/doc_pic/11_SPI/17_OLED_Framebuffer驱动_上机实验.tif b/STM32MP157/doc_pic/11_SPI/17_OLED_Framebuffer驱动_上机实验.tif
new file mode 100644
index 0000000..0fc2d72
Binary files /dev/null and b/STM32MP157/doc_pic/11_SPI/17_OLED_Framebuffer驱动_上机实验.tif differ
diff --git a/STM32MP157/doc_pic/11_SPI/pic/79_src_for_framebuffer_ok.png b/STM32MP157/doc_pic/11_SPI/pic/79_src_for_framebuffer_ok.png
new file mode 100644
index 0000000..eeded1a
Binary files /dev/null and b/STM32MP157/doc_pic/11_SPI/pic/79_src_for_framebuffer_ok.png differ
diff --git a/STM32MP157/source/A7/11_SPI/10_oled_framebuffer_ok/03_freetype_show_font_angle/Makefile b/STM32MP157/source/A7/11_SPI/10_oled_framebuffer_ok/03_freetype_show_font_angle/Makefile
new file mode 100644
index 0000000..681a0d9
--- /dev/null
+++ b/STM32MP157/source/A7/11_SPI/10_oled_framebuffer_ok/03_freetype_show_font_angle/Makefile
@@ -0,0 +1,18 @@
+
+# 1. 使用不同的开发板内核时, 一定要修改KERN_DIR
+# 2. KERN_DIR中的内核要事先配置、编译, 为了能编译内核, 要先设置下列环境变量:
+# 2.1 ARCH,          比如: export ARCH=arm64
+# 2.2 CROSS_COMPILE, 比如: export CROSS_COMPILE=aarch64-linux-gnu-
+# 2.3 PATH,          比如: export PATH=$PATH:/home/book/100ask_roc-rk3399-pc/ToolChain-6.3.1/gcc-linaro-6.3.1-2017.05-x86_64_aarch64-linux-gnu/bin 
+# 注意: 不同的开发板不同的编译器上述3个环境变量不一定相同,
+#       请参考各开发板的高级用户使用手册
+
+
+all:
+	$(CROSS_COMPILE)gcc -I /home/book/100ask_stm32mp157_pro-sdk/ToolChain/arm-buildroot-linux-gnueabihf_sdk-buildroot/arm-buildroot-linux-gnueabihf/sysroot/usr/include/freetype2 -o freetype_show_font_angle freetype_show_font_angle.c -lm -lfreetype
+
+clean:
+	rm -rf *.o freetype_show_font_angle
+
+
+
diff --git a/STM32MP157/source/A7/11_SPI/10_oled_framebuffer_ok/03_freetype_show_font_angle/freetype_show_font_angle.c b/STM32MP157/source/A7/11_SPI/10_oled_framebuffer_ok/03_freetype_show_font_angle/freetype_show_font_angle.c
new file mode 100644
index 0000000..fb2b994
--- /dev/null
+++ b/STM32MP157/source/A7/11_SPI/10_oled_framebuffer_ok/03_freetype_show_font_angle/freetype_show_font_angle.c
@@ -0,0 +1,210 @@
+#include <sys/mman.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include <linux/fb.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <string.h>
+#include <math.h>
+#include <wchar.h>
+#include <sys/ioctl.h>
+#include <ft2build.h>
+#include FT_FREETYPE_H
+#include FT_GLYPH_H
+
+int fd_fb;
+struct fb_var_screeninfo var;	/* Current var */
+int screen_size;
+unsigned char *fbmem;
+unsigned int line_width;
+unsigned int pixel_width;
+
+
+/**********************************************************************
+ * 函数名称： lcd_put_pixel
+ * 功能描述： 在LCD指定位置上输出指定颜色（描点）
+ * 输入参数： x坐标，y坐标，颜色
+ * 输出参数： 无
+ * 返 回 值： 会
+ * 修改日期        版本号     修改人	      修改内容
+ * -----------------------------------------------
+ * 2020/05/12	     V1.0	  zh(angenao)	      创建
+ ***********************************************************************/ 
+void lcd_put_pixel(int x, int y, unsigned int color)
+{
+	unsigned char *pen_8 = fbmem+y*line_width+x*pixel_width;
+	unsigned short *pen_16;	
+	unsigned int *pen_32;	
+
+	unsigned int red, green, blue;	
+	int bit;
+
+	pen_16 = (unsigned short *)pen_8;
+	pen_32 = (unsigned int *)pen_8;
+
+	switch (var.bits_per_pixel)
+	{
+		case 1:
+		{
+			pen_8 = fbmem+y*line_width+x/8;
+			bit = x & 7;
+			if (color)
+				*pen_8 = *pen_8 | (1<<bit);
+			else
+				*pen_8 = *pen_8 & ~(1<<bit);
+			break;
+		}
+		case 8:
+		{
+			*pen_8 = color;
+			break;
+		}
+		case 16:
+		{
+			/* 565 */
+			red   = (color >> 16) & 0xff;
+			green = (color >> 8) & 0xff;
+			blue  = (color >> 0) & 0xff;
+			color = ((red >> 3) << 11) | ((green >> 2) << 5) | (blue >> 3);
+			*pen_16 = color;
+			break;
+		}
+		case 32:
+		{
+			*pen_32 = color;
+			break;
+		}
+		default:
+		{
+			printf("can't surport %dbpp\n", var.bits_per_pixel);
+			break;
+		}
+	}
+}
+
+/**********************************************************************
+ * 函数名称： draw_bitmap
+ * 功能描述： 根据bitmap位图，在LCD指定位置显示汉字
+ * 输入参数： x坐标，y坐标，位图指针
+ * 输出参数： 无
+ * 返 回 值： 无
+ * 修改日期        版本号     修改人	      修改内容
+ * -----------------------------------------------
+ * 2020/05/12	     V1.0	  zh(angenao)	      创建
+ ***********************************************************************/ 
+void
+draw_bitmap( FT_Bitmap*  bitmap,
+             FT_Int      x,
+             FT_Int      y)
+{
+	FT_Int  i, j, p, q;
+	FT_Int  x_max = x + bitmap->width;
+	FT_Int  y_max = y + bitmap->rows;
+
+	//printf("x = %d, y = %d\n", x, y);
+
+	for ( j = y, q = 0; j < y_max; j++, q++ )
+	{
+		for ( i = x, p = 0; i < x_max; i++, p++ )
+		{
+			if ( i < 0      || j < 0       ||
+				i >= var.xres || j >= var.yres )
+			continue;
+
+			//image[j][i] |= bitmap->buffer[q * bitmap->width + p];
+			lcd_put_pixel(i, j, bitmap->buffer[q * bitmap->width + p]);
+		}
+	}
+}
+
+
+int main(int argc, char **argv)
+{
+	wchar_t *chinese_str = L"繁";
+
+	FT_Library	  library;
+	FT_Face 	  face;
+	int error;
+    FT_Vector     pen;
+	FT_GlyphSlot  slot;
+	int font_size = 24;
+	FT_Matrix	  matrix;				  /* transformation matrix */
+	double		  angle;
+
+	if (argc < 3)
+	{
+		printf("Usage : %s </dev/fbX> <font_file> <angle> [font_size]\n", argv[0]);
+		return -1;
+	}
+
+	angle  = ( 1.0* strtoul(argv[3], NULL, 0) / 360 ) * 3.14159 * 2;	   /* use 25 degrees	 */
+
+	if (argc == 5)
+		font_size = strtoul(argv[4], NULL, 0);
+		
+	fd_fb = open(argv[1], O_RDWR);
+	if (fd_fb < 0)
+	{
+		printf("can't open %s\n", argv[1]);
+		return -1;
+	}
+
+	if (ioctl(fd_fb, FBIOGET_VSCREENINFO, &var))
+	{
+		printf("can't get var\n");
+		return -1;
+	}
+
+	line_width  = var.xres * var.bits_per_pixel / 8;
+	pixel_width = var.bits_per_pixel / 8;
+	screen_size = var.xres * var.yres * var.bits_per_pixel / 8;
+	fbmem = (unsigned char *)mmap(NULL , screen_size, PROT_READ | PROT_WRITE, MAP_SHARED, fd_fb, 0);
+	if (fbmem == (unsigned char *)-1)
+	{
+		printf("can't mmap\n");
+		return -1;
+	}
+
+	/* 清屏: 全部设为黑色 */
+	memset(fbmem, 0, screen_size);
+
+	/* 显示矢量字体 */
+	error = FT_Init_FreeType( &library );			   /* initialize library */
+	/* error handling omitted */
+	
+	error = FT_New_Face( library, argv[2], 0, &face ); /* create face object */
+	/* error handling omitted */	
+	slot = face->glyph;
+
+	FT_Set_Pixel_Sizes(face, font_size, 0);
+
+	/* 确定座标:
+	 */
+	pen.x = 0;
+	pen.y = 0;
+
+	/* set up matrix */
+	matrix.xx = (FT_Fixed)( cos( angle ) * 0x10000L );
+	matrix.xy = (FT_Fixed)(-sin( angle ) * 0x10000L );
+	matrix.yx = (FT_Fixed)( sin( angle ) * 0x10000L );
+	matrix.yy = (FT_Fixed)( cos( angle ) * 0x10000L );
+
+    /* set transformation */
+    FT_Set_Transform( face, &matrix, &pen);
+
+    /* load glyph image into the slot (erase previous one) */
+    error = FT_Load_Char( face, chinese_str[0], FT_LOAD_RENDER );
+	if (error)
+	{
+		printf("FT_Load_Char error\n");
+		return -1;
+	}
+	
+    draw_bitmap( &slot->bitmap,
+                 var.xres/2,
+                 var.yres/2);
+
+	return 0;	
+}
+
diff --git a/STM32MP157/source/A7/11_SPI/10_oled_framebuffer_ok/03_freetype_show_font_angle/simsun.ttc b/STM32MP157/source/A7/11_SPI/10_oled_framebuffer_ok/03_freetype_show_font_angle/simsun.ttc
new file mode 100644
index 0000000..23d5c4a
Binary files /dev/null and b/STM32MP157/source/A7/11_SPI/10_oled_framebuffer_ok/03_freetype_show_font_angle/simsun.ttc differ
diff --git a/STM32MP157/source/A7/11_SPI/10_oled_framebuffer_ok/Makefile b/STM32MP157/source/A7/11_SPI/10_oled_framebuffer_ok/Makefile
new file mode 100644
index 0000000..bffc069
--- /dev/null
+++ b/STM32MP157/source/A7/11_SPI/10_oled_framebuffer_ok/Makefile
@@ -0,0 +1,22 @@
+
+# 1. 使用不同的开发板内核时, 一定要修改KERN_DIR
+# 2. KERN_DIR中的内核要事先配置、编译, 为了能编译内核, 要先设置下列环境变量:
+# 2.1 ARCH,          比如: export ARCH=arm64
+# 2.2 CROSS_COMPILE, 比如: export CROSS_COMPILE=aarch64-linux-gnu-
+# 2.3 PATH,          比如: export PATH=$PATH:/home/book/100ask_roc-rk3399-pc/ToolChain-6.3.1/gcc-linaro-6.3.1-2017.05-x86_64_aarch64-linux-gnu/bin 
+# 注意: 不同的开发板不同的编译器上述3个环境变量不一定相同,
+#       请参考各开发板的高级用户使用手册
+
+KERN_DIR = /home/book/100ask_stm32mp157_pro-sdk/Linux-5.4
+
+all:
+	make -C $(KERN_DIR) M=`pwd` modules 
+	$(CROSS_COMPILE)gcc -o spi_oled spi_oled.c
+
+clean:
+	make -C $(KERN_DIR) M=`pwd` modules clean
+	rm -rf modules.order spi_oled
+
+obj-m	+= oled_drv.o
+
+
diff --git a/STM32MP157/source/A7/11_SPI/10_oled_framebuffer_ok/font.h b/STM32MP157/source/A7/11_SPI/10_oled_framebuffer_ok/font.h
new file mode 100644
index 0000000..5698917
--- /dev/null
+++ b/STM32MP157/source/A7/11_SPI/10_oled_framebuffer_ok/font.h
@@ -0,0 +1,106 @@
+#ifndef  _FONT_H_
+#define _FONT_H_
+const unsigned char oled_asc2_8x16[95][16]=
+{
+    {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00},// 0
+    {0x00,0x00,0x00,0xF8,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x33,0x30,0x00,0x00,0x00},//!1
+    {0x00,0x10,0x0C,0x06,0x10,0x0C,0x06,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00},//"2
+    {0x40,0xC0,0x78,0x40,0xC0,0x78,0x40,0x00,0x04,0x3F,0x04,0x04,0x3F,0x04,0x04,0x00},//#3
+    {0x00,0x70,0x88,0xFC,0x08,0x30,0x00,0x00,0x00,0x18,0x20,0xFF,0x21,0x1E,0x00,0x00},//$4
+    {0xF0,0x08,0xF0,0x00,0xE0,0x18,0x00,0x00,0x00,0x21,0x1C,0x03,0x1E,0x21,0x1E,0x00},//%5
+    {0x00,0xF0,0x08,0x88,0x70,0x00,0x00,0x00,0x1E,0x21,0x23,0x24,0x19,0x27,0x21,0x10},//&6
+    {0x10,0x16,0x0E,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00},//'7
+    {0x00,0x00,0x00,0xE0,0x18,0x04,0x02,0x00,0x00,0x00,0x00,0x07,0x18,0x20,0x40,0x00},//(8
+    {0x00,0x02,0x04,0x18,0xE0,0x00,0x00,0x00,0x00,0x40,0x20,0x18,0x07,0x00,0x00,0x00},//)9
+    {0x40,0x40,0x80,0xF0,0x80,0x40,0x40,0x00,0x02,0x02,0x01,0x0F,0x01,0x02,0x02,0x00},//*10
+    {0x00,0x00,0x00,0xF0,0x00,0x00,0x00,0x00,0x01,0x01,0x01,0x1F,0x01,0x01,0x01,0x00},//+11
+    {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x80,0xB0,0x70,0x00,0x00,0x00,0x00,0x00},//,12
+    {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x01,0x01,0x01,0x01,0x01,0x01},//-13
+    {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x30,0x30,0x00,0x00,0x00,0x00,0x00},//.14
+    {0x00,0x00,0x00,0x00,0x80,0x60,0x18,0x04,0x00,0x60,0x18,0x06,0x01,0x00,0x00,0x00},///15
+    {0x00,0xE0,0x10,0x08,0x08,0x10,0xE0,0x00,0x00,0x0F,0x10,0x20,0x20,0x10,0x0F,0x00},//016
+    {0x00,0x10,0x10,0xF8,0x00,0x00,0x00,0x00,0x00,0x20,0x20,0x3F,0x20,0x20,0x00,0x00},//117
+    {0x00,0x70,0x08,0x08,0x08,0x88,0x70,0x00,0x00,0x30,0x28,0x24,0x22,0x21,0x30,0x00},//218
+    {0x00,0x30,0x08,0x88,0x88,0x48,0x30,0x00,0x00,0x18,0x20,0x20,0x20,0x11,0x0E,0x00},//319
+    {0x00,0x00,0xC0,0x20,0x10,0xF8,0x00,0x00,0x00,0x07,0x04,0x24,0x24,0x3F,0x24,0x00},//420
+    {0x00,0xF8,0x08,0x88,0x88,0x08,0x08,0x00,0x00,0x19,0x21,0x20,0x20,0x11,0x0E,0x00},//521
+    {0x00,0xE0,0x10,0x88,0x88,0x18,0x00,0x00,0x00,0x0F,0x11,0x20,0x20,0x11,0x0E,0x00},//622
+    {0x00,0x38,0x08,0x08,0xC8,0x38,0x08,0x00,0x00,0x00,0x00,0x3F,0x00,0x00,0x00,0x00},//723
+    {0x00,0x70,0x88,0x08,0x08,0x88,0x70,0x00,0x00,0x1C,0x22,0x21,0x21,0x22,0x1C,0x00},//824
+    {0x00,0xE0,0x10,0x08,0x08,0x10,0xE0,0x00,0x00,0x00,0x31,0x22,0x22,0x11,0x0F,0x00},//925
+    {0x00,0x00,0x00,0xC0,0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x30,0x30,0x00,0x00,0x00},//:26
+    {0x00,0x00,0x00,0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x80,0x60,0x00,0x00,0x00,0x00},//;27
+    {0x00,0x00,0x80,0x40,0x20,0x10,0x08,0x00,0x00,0x01,0x02,0x04,0x08,0x10,0x20,0x00},//<28
+    {0x40,0x40,0x40,0x40,0x40,0x40,0x40,0x00,0x04,0x04,0x04,0x04,0x04,0x04,0x04,0x00},//=29
+    {0x00,0x08,0x10,0x20,0x40,0x80,0x00,0x00,0x00,0x20,0x10,0x08,0x04,0x02,0x01,0x00},//>30
+    {0x00,0x70,0x48,0x08,0x08,0x08,0xF0,0x00,0x00,0x00,0x00,0x30,0x36,0x01,0x00,0x00},//?31
+    {0xC0,0x30,0xC8,0x28,0xE8,0x10,0xE0,0x00,0x07,0x18,0x27,0x24,0x23,0x14,0x0B,0x00},//@32
+    {0x00,0x00,0xC0,0x38,0xE0,0x00,0x00,0x00,0x20,0x3C,0x23,0x02,0x02,0x27,0x38,0x20},//A33
+    {0x08,0xF8,0x88,0x88,0x88,0x70,0x00,0x00,0x20,0x3F,0x20,0x20,0x20,0x11,0x0E,0x00},//B34
+    {0xC0,0x30,0x08,0x08,0x08,0x08,0x38,0x00,0x07,0x18,0x20,0x20,0x20,0x10,0x08,0x00},//C35
+    {0x08,0xF8,0x08,0x08,0x08,0x10,0xE0,0x00,0x20,0x3F,0x20,0x20,0x20,0x10,0x0F,0x00},//D36
+    {0x08,0xF8,0x88,0x88,0xE8,0x08,0x10,0x00,0x20,0x3F,0x20,0x20,0x23,0x20,0x18,0x00},//E37
+    {0x08,0xF8,0x88,0x88,0xE8,0x08,0x10,0x00,0x20,0x3F,0x20,0x00,0x03,0x00,0x00,0x00},//F38
+    {0xC0,0x30,0x08,0x08,0x08,0x38,0x00,0x00,0x07,0x18,0x20,0x20,0x22,0x1E,0x02,0x00},//G39
+    {0x08,0xF8,0x08,0x00,0x00,0x08,0xF8,0x08,0x20,0x3F,0x21,0x01,0x01,0x21,0x3F,0x20},//H40
+    {0x00,0x08,0x08,0xF8,0x08,0x08,0x00,0x00,0x00,0x20,0x20,0x3F,0x20,0x20,0x00,0x00},//I41
+    {0x00,0x00,0x08,0x08,0xF8,0x08,0x08,0x00,0xC0,0x80,0x80,0x80,0x7F,0x00,0x00,0x00},//J42
+    {0x08,0xF8,0x88,0xC0,0x28,0x18,0x08,0x00,0x20,0x3F,0x20,0x01,0x26,0x38,0x20,0x00},//K43
+    {0x08,0xF8,0x08,0x00,0x00,0x00,0x00,0x00,0x20,0x3F,0x20,0x20,0x20,0x20,0x30,0x00},//L44
+    {0x08,0xF8,0xF8,0x00,0xF8,0xF8,0x08,0x00,0x20,0x3F,0x00,0x3F,0x00,0x3F,0x20,0x00},//M45
+    {0x08,0xF8,0x30,0xC0,0x00,0x08,0xF8,0x08,0x20,0x3F,0x20,0x00,0x07,0x18,0x3F,0x00},//N46
+    {0xE0,0x10,0x08,0x08,0x08,0x10,0xE0,0x00,0x0F,0x10,0x20,0x20,0x20,0x10,0x0F,0x00},//O47
+    {0x08,0xF8,0x08,0x08,0x08,0x08,0xF0,0x00,0x20,0x3F,0x21,0x01,0x01,0x01,0x00,0x00},//P48
+    {0xE0,0x10,0x08,0x08,0x08,0x10,0xE0,0x00,0x0F,0x18,0x24,0x24,0x38,0x50,0x4F,0x00},//Q49
+    {0x08,0xF8,0x88,0x88,0x88,0x88,0x70,0x00,0x20,0x3F,0x20,0x00,0x03,0x0C,0x30,0x20},//R50
+    {0x00,0x70,0x88,0x08,0x08,0x08,0x38,0x00,0x00,0x38,0x20,0x21,0x21,0x22,0x1C,0x00},//S51
+    {0x18,0x08,0x08,0xF8,0x08,0x08,0x18,0x00,0x00,0x00,0x20,0x3F,0x20,0x00,0x00,0x00},//T52
+    {0x08,0xF8,0x08,0x00,0x00,0x08,0xF8,0x08,0x00,0x1F,0x20,0x20,0x20,0x20,0x1F,0x00},//U53
+    {0x08,0x78,0x88,0x00,0x00,0xC8,0x38,0x08,0x00,0x00,0x07,0x38,0x0E,0x01,0x00,0x00},//V54
+    {0xF8,0x08,0x00,0xF8,0x00,0x08,0xF8,0x00,0x03,0x3C,0x07,0x00,0x07,0x3C,0x03,0x00},//W55
+    {0x08,0x18,0x68,0x80,0x80,0x68,0x18,0x08,0x20,0x30,0x2C,0x03,0x03,0x2C,0x30,0x20},//X56
+    {0x08,0x38,0xC8,0x00,0xC8,0x38,0x08,0x00,0x00,0x00,0x20,0x3F,0x20,0x00,0x00,0x00},//Y57
+    {0x10,0x08,0x08,0x08,0xC8,0x38,0x08,0x00,0x20,0x38,0x26,0x21,0x20,0x20,0x18,0x00},//Z58
+    {0x00,0x00,0x00,0xFE,0x02,0x02,0x02,0x00,0x00,0x00,0x00,0x7F,0x40,0x40,0x40,0x00},//[59
+    {0x00,0x0C,0x30,0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x06,0x38,0xC0,0x00},//\60
+    {0x00,0x02,0x02,0x02,0xFE,0x00,0x00,0x00,0x00,0x40,0x40,0x40,0x7F,0x00,0x00,0x00},//]61
+    {0x00,0x00,0x04,0x02,0x02,0x02,0x04,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00},//^62
+    {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x80,0x80,0x80,0x80,0x80,0x80,0x80,0x80},//_63
+    {0x00,0x02,0x02,0x04,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00},//`64
+    {0x00,0x00,0x80,0x80,0x80,0x80,0x00,0x00,0x00,0x19,0x24,0x22,0x22,0x22,0x3F,0x20},//a65
+    {0x08,0xF8,0x00,0x80,0x80,0x00,0x00,0x00,0x00,0x3F,0x11,0x20,0x20,0x11,0x0E,0x00},//b66
+    {0x00,0x00,0x00,0x80,0x80,0x80,0x00,0x00,0x00,0x0E,0x11,0x20,0x20,0x20,0x11,0x00},//c67
+    {0x00,0x00,0x00,0x80,0x80,0x88,0xF8,0x00,0x00,0x0E,0x11,0x20,0x20,0x10,0x3F,0x20},//d68
+    {0x00,0x00,0x80,0x80,0x80,0x80,0x00,0x00,0x00,0x1F,0x22,0x22,0x22,0x22,0x13,0x00},//e69
+    {0x00,0x80,0x80,0xF0,0x88,0x88,0x88,0x18,0x00,0x20,0x20,0x3F,0x20,0x20,0x00,0x00},//f70
+    {0x00,0x00,0x80,0x80,0x80,0x80,0x80,0x00,0x00,0x6B,0x94,0x94,0x94,0x93,0x60,0x00},//g71
+    {0x08,0xF8,0x00,0x80,0x80,0x80,0x00,0x00,0x20,0x3F,0x21,0x00,0x00,0x20,0x3F,0x20},//h72
+    {0x00,0x80,0x98,0x98,0x00,0x00,0x00,0x00,0x00,0x20,0x20,0x3F,0x20,0x20,0x00,0x00},//i73
+    {0x00,0x00,0x00,0x80,0x98,0x98,0x00,0x00,0x00,0xC0,0x80,0x80,0x80,0x7F,0x00,0x00},//j74
+    {0x08,0xF8,0x00,0x00,0x80,0x80,0x80,0x00,0x20,0x3F,0x24,0x02,0x2D,0x30,0x20,0x00},//k75
+    {0x00,0x08,0x08,0xF8,0x00,0x00,0x00,0x00,0x00,0x20,0x20,0x3F,0x20,0x20,0x00,0x00},//l76
+    {0x80,0x80,0x80,0x80,0x80,0x80,0x80,0x00,0x20,0x3F,0x20,0x00,0x3F,0x20,0x00,0x3F},//m77
+    {0x80,0x80,0x00,0x80,0x80,0x80,0x00,0x00,0x20,0x3F,0x21,0x00,0x00,0x20,0x3F,0x20},//n78
+    {0x00,0x00,0x80,0x80,0x80,0x80,0x00,0x00,0x00,0x1F,0x20,0x20,0x20,0x20,0x1F,0x00},//o79
+    {0x80,0x80,0x00,0x80,0x80,0x00,0x00,0x00,0x80,0xFF,0xA1,0x20,0x20,0x11,0x0E,0x00},//p80
+    {0x00,0x00,0x00,0x80,0x80,0x80,0x80,0x00,0x00,0x0E,0x11,0x20,0x20,0xA0,0xFF,0x80},//q81
+    {0x80,0x80,0x80,0x00,0x80,0x80,0x80,0x00,0x20,0x20,0x3F,0x21,0x20,0x00,0x01,0x00},//r82
+    {0x00,0x00,0x80,0x80,0x80,0x80,0x80,0x00,0x00,0x33,0x24,0x24,0x24,0x24,0x19,0x00},//s83
+    {0x00,0x80,0x80,0xE0,0x80,0x80,0x00,0x00,0x00,0x00,0x00,0x1F,0x20,0x20,0x00,0x00},//t84
+    {0x80,0x80,0x00,0x00,0x00,0x80,0x80,0x00,0x00,0x1F,0x20,0x20,0x20,0x10,0x3F,0x20},//u85
+    {0x80,0x80,0x80,0x00,0x00,0x80,0x80,0x80,0x00,0x01,0x0E,0x30,0x08,0x06,0x01,0x00},//v86
+    {0x80,0x80,0x00,0x80,0x00,0x80,0x80,0x80,0x0F,0x30,0x0C,0x03,0x0C,0x30,0x0F,0x00},//w87
+    {0x00,0x80,0x80,0x00,0x80,0x80,0x80,0x00,0x00,0x20,0x31,0x2E,0x0E,0x31,0x20,0x00},//x88
+    {0x80,0x80,0x80,0x00,0x00,0x80,0x80,0x80,0x80,0x81,0x8E,0x70,0x18,0x06,0x01,0x00},//y89
+    {0x00,0x80,0x80,0x80,0x80,0x80,0x80,0x00,0x00,0x21,0x30,0x2C,0x22,0x21,0x30,0x00},//z90
+    {0x00,0x00,0x00,0x00,0x80,0x7C,0x02,0x02,0x00,0x00,0x00,0x00,0x00,0x3F,0x40,0x40},//{91
+    {0x00,0x00,0x00,0x00,0xFF,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xFF,0x00,0x00,0x00},//|92
+    {0x00,0x02,0x02,0x7C,0x80,0x00,0x00,0x00,0x00,0x40,0x40,0x3F,0x00,0x00,0x00,0x00},//}93
+    {0x00,0x06,0x01,0x01,0x02,0x02,0x04,0x04,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00},//~94
+};      
+const unsigned char hz_1616[][32]={
+{0x02,0x00,0x02,0x00,0xE2,0xFF,0x22,0x42,0x22,0x42,0x32,0x42,0x2A,0x42,0x26,0x42,0x22,0x42,0x22,0x42,0x22,0x42,0x22,0x42,0xE2,0xFF,0x02,0x00,0x02,0x00,0x00,0x00},/*"百",0*/
+{0x00,0x00,0xF8,0xFF,0x01,0x00,0x02,0x00,0x00,0x00,0xE2,0x1F,0x22,0x08,0x22,0x08,0x22,0x08,0xE2,0x1F,0x02,0x00,0x02,0x40,0x02,0x80,0xFE,0x7F,0x00,0x00,0x00,0x00},/*"问",1*/
+{0x00,0x00,0xFE,0xFF,0x02,0x10,0x22,0x08,0x42,0x06,0x82,0x01,0x72,0x0E,0x02,0x10,0x22,0x08,0x42,0x06,0x82,0x01,0x72,0x4E,0x02,0x80,0xFE,0x7F,0x00,0x00,0x00,0x00},/*"网",2*/
+};
+#endif
diff --git a/STM32MP157/source/A7/11_SPI/10_oled_framebuffer_ok/oled_drv.c b/STM32MP157/source/A7/11_SPI/10_oled_framebuffer_ok/oled_drv.c
new file mode 100644
index 0000000..8fd8e6b
--- /dev/null
+++ b/STM32MP157/source/A7/11_SPI/10_oled_framebuffer_ok/oled_drv.c
@@ -0,0 +1,491 @@
+/*
+ * Simple synchronous userspace interface to SPI devices
+ *
+ * Copyright (C) 2006 SWAPP
+ *	Andrea Paterniani <a.paterniani@swapp-eng.it>
+ * Copyright (C) 2007 David Brownell (simplification, cleanup)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/ioctl.h>
+#include <linux/fs.h>
+#include <linux/device.h>
+#include <linux/err.h>
+#include <linux/list.h>
+#include <linux/errno.h>
+#include <linux/mutex.h>
+#include <linux/slab.h>
+#include <linux/compat.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/acpi.h>
+
+#include <linux/spi/spi.h>
+#include <linux/spi/spidev.h>
+
+#include <linux/uaccess.h>
+#include <linux/gpio/consumer.h>
+
+#include <linux/fb.h>
+#include <linux/dma-mapping.h>
+#include <linux/kthread.h>
+
+#define OLED_IOC_INIT 			123
+#define OLED_IOC_SET_POS 		124
+
+//为0 表示命令，为1表示数据
+#define OLED_CMD 	0
+#define OLED_DATA 	1
+
+static struct fb_info *myfb_info;
+
+static unsigned int pseudo_palette[16];
+
+static struct task_struct *oled_thread;
+
+static unsigned char *oled_buf; //[1024];
+
+/* from pxafb.c */
+static inline unsigned int chan_to_field(unsigned int chan,
+					 struct fb_bitfield *bf)
+{
+	chan &= 0xffff;
+	chan >>= 16 - bf->length;
+	return chan << bf->offset;
+}
+
+static int mylcd_setcolreg(unsigned regno,
+			       unsigned red, unsigned green, unsigned blue,
+			       unsigned transp, struct fb_info *info)
+{
+	unsigned int val;
+
+	/* dprintk("setcol: regno=%d, rgb=%d,%d,%d\n",
+		   regno, red, green, blue); */
+
+	switch (info->fix.visual) {
+	case FB_VISUAL_TRUECOLOR:
+		/* true-colour, use pseudo-palette */
+
+		if (regno < 16) {
+			u32 *pal = info->pseudo_palette;
+
+			val  = chan_to_field(red,   &info->var.red);
+			val |= chan_to_field(green, &info->var.green);
+			val |= chan_to_field(blue,  &info->var.blue);
+
+			pal[regno] = val;
+		}
+		break;
+
+	default:
+		return 1;	/* unknown type */
+	}
+
+	return 0;
+}
+
+
+static struct fb_ops myfb_ops = {
+	.owner		= THIS_MODULE,
+	.fb_setcolreg	= mylcd_setcolreg,
+	.fb_fillrect	= cfb_fillrect,
+	.fb_copyarea	= cfb_copyarea,
+	.fb_imageblit	= cfb_imageblit,
+};
+
+
+
+/*-------------------------------------------------------------------------*/
+
+static struct spi_device *oled;
+static int major;
+static struct gpio_desc *dc_gpio;
+
+static void dc_pin_init(void)
+{
+	gpiod_direction_output(dc_gpio, 1);
+}
+
+static void oled_set_dc_pin(int val)
+{
+	gpiod_set_value(dc_gpio, val);
+}
+
+static void spi_write_datas(const unsigned char *buf, int len)
+{
+	spi_write(oled, buf, len);
+}
+
+
+/**********************************************************************
+	 * 函数名称： oled_write_cmd
+	 * 功能描述： oled向特定地址写入数据或者命令
+	 * 输入参数：@uc_data :要写入的数据
+	 			@uc_cmd:为1则表示写入数据，为0表示写入命令
+	 * 输出参数：无
+	 * 返 回 值： 无
+	 * 修改日期 	   版本号	 修改人		  修改内容
+	 * -----------------------------------------------
+	 * 2020/03/04		 V1.0	  芯晓		  创建
+ ***********************************************************************/
+static void oled_write_cmd_data(unsigned char uc_data,unsigned char uc_cmd)
+{
+	if(uc_cmd==0)
+	{
+		oled_set_dc_pin(0);
+	}
+	else
+	{
+		oled_set_dc_pin(1);//拉高，表示写入数据
+	}
+	spi_write_datas(&uc_data, 1);//写入
+}
+
+
+/**********************************************************************
+	 * 函数名称： oled_init
+	 * 功能描述： oled_init的初始化，包括SPI控制器得初始化
+	 * 输入参数：无
+	 * 输出参数： 初始化的结果
+	 * 返 回 值： 成功则返回0，否则返回-1
+	 * 修改日期 	   版本号	 修改人		  修改内容
+	 * -----------------------------------------------
+	 * 2020/03/15		 V1.0	  芯晓		  创建
+ ***********************************************************************/
+static int oled_init(void)
+{
+	oled_write_cmd_data(0xae,OLED_CMD);//关闭显示
+
+	oled_write_cmd_data(0x00,OLED_CMD);//设置 lower column address
+	oled_write_cmd_data(0x10,OLED_CMD);//设置 higher column address
+
+	oled_write_cmd_data(0x40,OLED_CMD);//设置 display start line
+
+	oled_write_cmd_data(0xB0,OLED_CMD);//设置page address
+
+	oled_write_cmd_data(0x81,OLED_CMD);// contract control
+	oled_write_cmd_data(0x66,OLED_CMD);//128
+
+	oled_write_cmd_data(0xa1,OLED_CMD);//设置 segment remap
+
+	oled_write_cmd_data(0xa6,OLED_CMD);//normal /reverse
+
+	oled_write_cmd_data(0xa8,OLED_CMD);//multiple ratio
+	oled_write_cmd_data(0x3f,OLED_CMD);//duty = 1/64
+
+	oled_write_cmd_data(0xc8,OLED_CMD);//com scan direction
+
+	oled_write_cmd_data(0xd3,OLED_CMD);//set displat offset
+	oled_write_cmd_data(0x00,OLED_CMD);//
+
+	oled_write_cmd_data(0xd5,OLED_CMD);//set osc division
+	oled_write_cmd_data(0x80,OLED_CMD);//
+
+	oled_write_cmd_data(0xd9,OLED_CMD);//ser pre-charge period
+	oled_write_cmd_data(0x1f,OLED_CMD);//
+
+	oled_write_cmd_data(0xda,OLED_CMD);//set com pins
+	oled_write_cmd_data(0x12,OLED_CMD);//
+
+	oled_write_cmd_data(0xdb,OLED_CMD);//set vcomh
+	oled_write_cmd_data(0x30,OLED_CMD);//
+
+	oled_write_cmd_data(0x8d,OLED_CMD);//set charge pump disable 
+	oled_write_cmd_data(0x14,OLED_CMD);//
+
+	oled_write_cmd_data(0xaf,OLED_CMD);//set dispkay on
+
+	return 0;
+}		  			 		  						  					  				 	   		  	  	 	  
+
+//坐标设置
+/**********************************************************************
+	 * 函数名称： OLED_DIsp_Set_Pos
+	 * 功能描述：设置要显示的位置
+	 * 输入参数：@ x ：要显示的column address
+	 			@y :要显示的page address
+	 * 输出参数： 无
+	 * 返 回 值： 
+	 * 修改日期 	   版本号	 修改人		  修改内容
+	 * -----------------------------------------------
+	 * 2020/03/15		 V1.0	  芯晓		  创建
+ ***********************************************************************/
+static void OLED_DIsp_Set_Pos(int x, int y)
+{ 	oled_write_cmd_data(0xb0+y,OLED_CMD);
+	oled_write_cmd_data((x&0x0f),OLED_CMD); 
+	oled_write_cmd_data(((x&0xf0)>>4)|0x10,OLED_CMD);
+}   	      	   			 
+
+
+static long
+spidev_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
+{
+	int x, y;
+	
+	/* 根据cmd操作硬件 */
+	switch (cmd)
+	{
+		case OLED_IOC_INIT: /* init */
+		{
+			dc_pin_init();
+			oled_init();
+			break;
+		}
+
+		case OLED_IOC_SET_POS: /* set pos */
+		{
+			x = arg & 0xff;
+			y = (arg >> 8) & 0xff;
+			OLED_DIsp_Set_Pos(x, y);
+			break;
+		}
+
+	}
+
+	return 0;
+}
+
+static ssize_t
+spidev_write(struct file *filp, const char __user *buf,
+		size_t count, loff_t *f_pos)
+{
+	char *ker_buf;
+	int err;
+
+	ker_buf = kmalloc(count, GFP_KERNEL);
+	err = copy_from_user(ker_buf, buf, count);
+	
+	oled_set_dc_pin(1);//拉高，表示写入数据
+	spi_write_datas(ker_buf, count);
+	kfree(ker_buf);
+	return count;
+}
+
+static const struct file_operations spidev_fops = {
+	.owner =	THIS_MODULE,
+	/* REVISIT switch to aio primitives, so that userspace
+	 * gets more complete API coverage.  It'll simplify things
+	 * too, except for the locking.
+	 */
+	.write =	spidev_write,
+	.unlocked_ioctl = spidev_ioctl,
+};
+
+/*-------------------------------------------------------------------------*/
+
+/* The main reason to have this class is to make mdev/udev create the
+ * /dev/spidevB.C character device nodes exposing our userspace API.
+ * It also simplifies memory management.
+ */
+
+static struct class *spidev_class;
+
+static const struct of_device_id spidev_dt_ids[] = {
+	{ .compatible = "100ask,oled" },
+	{},
+};
+
+
+
+static int oled_thread_func(void *param)
+{
+	unsigned char *p[8];
+	unsigned char data[8];
+	int i;
+	int j;
+	int line;
+	int bit;
+	unsigned char byte;
+	unsigned char *fb  = myfb_info->screen_base;
+	int k;
+	
+	while (!kthread_should_stop()) 
+	{
+		/* 1. 从Framebuffer得到数据 */
+		/* 2. 转换格式 */
+		k = 0;
+		for (i = 0; i < 8; i++)
+		{
+			for (line = 0; line < 8; line++)
+				p[line] = &fb[i*128 + line * 16];
+			
+			for (j = 0; j < 16; j++)
+			{
+				for (line = 0; line < 8; line++)
+				{
+					data[line] = *p[line];
+					p[line] += 1;
+				}
+
+				for (bit = 0; bit < 8; bit++)
+				{
+					byte =  (((data[0]>>bit) & 1) << 0) |
+							(((data[1]>>bit) & 1) << 1) |
+							(((data[2]>>bit) & 1) << 2) |
+							(((data[3]>>bit) & 1) << 3) |
+							(((data[4]>>bit) & 1) << 4) |
+							(((data[5]>>bit) & 1) << 5) |
+							(((data[6]>>bit) & 1) << 6) |
+							(((data[7]>>bit) & 1) << 7);
+
+					oled_buf[k++] = byte;
+				}
+				
+			}
+		}
+		
+
+		/* 3. 通过SPI发送给OLED */
+		for (i = 0; i < 8; i++)
+		{
+			OLED_DIsp_Set_Pos(0, i);
+			oled_set_dc_pin(1);
+			spi_write_datas(&oled_buf[i*128], 128);
+		}
+		
+		
+		/* 4. 休眠一会 */
+		schedule_timeout_interruptible(HZ);
+	}
+	return 0;
+}
+
+
+/*-------------------------------------------------------------------------*/
+
+static int spidev_probe(struct spi_device *spi)
+{
+	dma_addr_t phy_addr;
+	
+	/* 1. 记录spi_device */
+	oled = spi;
+
+	/* 2. 注册字符设备 */
+	major = register_chrdev(0, "100ask_oled", &spidev_fops);
+	spidev_class = class_create(THIS_MODULE, "100ask_oled");
+	device_create(spidev_class, NULL, MKDEV(major, 0), NULL, "100ask_oled");	
+
+	/* 3. 获得GPIO引脚 */
+	dc_gpio = gpiod_get(&spi->dev, "dc", 0);
+
+	
+
+	/* A. 分配fb_info */
+	myfb_info = framebuffer_alloc(0, NULL);
+
+	/* B. 设置fb_info */
+	/* B.1 var : LCD分辨率、颜色格式 */
+	myfb_info->var.xres_virtual = myfb_info->var.xres = 128;
+	myfb_info->var.yres_virtual = myfb_info->var.yres = 64;
+	
+	myfb_info->var.bits_per_pixel = 1;  /* rgb565 */	
+
+	/* B.2 fix */
+	strcpy(myfb_info->fix.id, "100ask_oled");
+	myfb_info->fix.smem_len = myfb_info->var.xres * myfb_info->var.yres * myfb_info->var.bits_per_pixel / 8;
+
+	//myfb_info->flags |= FBINFO_MODULE; /* 禁止显示LOGO */
+
+
+	/* fb的虚拟地址 */
+	dma_set_coherent_mask(&spi->dev, DMA_BIT_MASK(32));
+	myfb_info->screen_base = dma_alloc_wc(&spi->dev, myfb_info->fix.smem_len, &phy_addr,
+					 GFP_KERNEL);
+	myfb_info->fix.smem_start = phy_addr;  /* fb的物理地址 */
+	
+	myfb_info->fix.type = FB_TYPE_PACKED_PIXELS;
+	myfb_info->fix.visual = FB_VISUAL_MONO10;
+
+	myfb_info->fix.line_length = myfb_info->var.xres * myfb_info->var.bits_per_pixel / 8;	
+
+	/* c. fbops */
+	myfb_info->fbops = &myfb_ops;
+	myfb_info->pseudo_palette = pseudo_palette;
+
+
+	/* C. 注册fb_info */
+	register_framebuffer(myfb_info);
+
+	/* D. 创建内核线程 */
+	oled_buf = kmalloc(1024, GFP_KERNEL);
+	dc_pin_init();
+	oled_init();
+	
+ 	oled_thread = kthread_run(oled_thread_func, NULL, "oled_kthead");
+
+	return 0;
+}
+
+static int spidev_remove(struct spi_device *spi)
+{
+	kthread_stop(oled_thread);
+	kfree(oled_buf);
+	
+	/* A. 反注册fb_info */
+	unregister_framebuffer(myfb_info);
+
+	/* B. 释放内存 */
+	dma_free_wc(&spi->dev, myfb_info->fix.smem_len, myfb_info->screen_base,
+		    myfb_info->fix.smem_start);
+
+	/* C. 释放fb_info */
+	framebuffer_release(myfb_info);
+	
+	gpiod_put(dc_gpio);
+	
+	/* 反注册字符设 */
+	device_destroy(spidev_class, MKDEV(major, 0));
+	class_destroy(spidev_class);
+	unregister_chrdev(major, "100ask_oled");
+
+	return 0;
+}
+
+static struct spi_driver spidev_spi_driver = {
+	.driver = {
+		.name =		"100ask_spi_oled_drv",
+		.of_match_table = of_match_ptr(spidev_dt_ids),
+	},
+	.probe =	spidev_probe,
+	.remove =	spidev_remove,
+
+	/* NOTE:  suspend/resume methods are not necessary here.
+	 * We don't do anything except pass the requests to/from
+	 * the underlying controller.  The refrigerator handles
+	 * most issues; the controller driver handles the rest.
+	 */
+};
+
+/*-------------------------------------------------------------------------*/
+
+static int __init spidev_init(void)
+{
+	int status;
+
+	status = spi_register_driver(&spidev_spi_driver);
+	if (status < 0) {
+	}
+	return status;
+}
+module_init(spidev_init);
+
+static void __exit spidev_exit(void)
+{
+	spi_unregister_driver(&spidev_spi_driver);
+}
+module_exit(spidev_exit);
+
+MODULE_LICENSE("GPL");
+
diff --git a/STM32MP157/source/A7/11_SPI/10_oled_framebuffer_ok/spi_oled.c b/STM32MP157/source/A7/11_SPI/10_oled_framebuffer_ok/spi_oled.c
new file mode 100644
index 0000000..98810de
--- /dev/null
+++ b/STM32MP157/source/A7/11_SPI/10_oled_framebuffer_ok/spi_oled.c
@@ -0,0 +1,241 @@
+#include <stdio.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <fcntl.h>
+#include <string.h>
+
+#include <sys/ioctl.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#include <linux/types.h>
+#include <linux/spi/spidev.h>
+
+#include "font.h"
+
+#define OLED_IOC_INIT 			123
+#define OLED_IOC_SET_POS 		124
+
+
+//为0 表示命令，为1表示数据
+#define OLED_CMD 	0
+#define OLED_DATA 	1
+
+static int fd_spidev;
+static int dc_pin_num;
+
+
+void OLED_DIsp_Set_Pos(int x, int y);
+
+void oled_write_datas(const unsigned char *buf, int len)
+{
+	write(fd_spidev, buf, len);
+}
+
+		  			 		  						  					  				 	   		  	  	 	  		  			 		  						  					  				 	   		  	  	 	  
+
+/**********************************************************************
+	 * 函数名称： OLED_DIsp_Clear
+	 * 功能描述： 整个屏幕显示数据清0
+	 * 输入参数：无
+	 * 输出参数： 无
+	 * 返 回 值： 
+	 * 修改日期 	   版本号	 修改人		  修改内容
+	 * -----------------------------------------------
+	 * 2020/03/15		 V1.0	  芯晓		  创建
+ ***********************************************************************/
+void OLED_DIsp_Clear(void)  
+{
+    unsigned char x, y;
+	char buf[128];
+
+	memset(buf, 0, 128);
+	
+    for (y = 0; y < 8; y++)
+    {
+        OLED_DIsp_Set_Pos(0, y);
+        oled_write_datas(buf, 128);
+    }
+}
+
+/**********************************************************************
+	 * 函数名称： OLED_DIsp_All
+	 * 功能描述： 整个屏幕显示全部点亮，可以用于检查坏点
+	 * 输入参数：无
+	 * 输出参数：无 
+	 * 返 回 值：
+	 * 修改日期 	   版本号	 修改人		  修改内容
+	 * -----------------------------------------------
+	 * 2020/03/15		 V1.0	  芯晓		  创建
+ ***********************************************************************/
+void OLED_DIsp_All(void)  
+{
+    unsigned char x, y;
+	char buf[128];
+
+	memset(buf, 0xff, 128);
+	
+    for (y = 0; y < 8; y++)
+    {
+        OLED_DIsp_Set_Pos(0, y);
+        oled_write_datas(buf, 128);
+    }
+
+
+
+}
+
+//坐标设置
+/**********************************************************************
+	 * 函数名称： OLED_DIsp_Set_Pos
+	 * 功能描述：设置要显示的位置
+	 * 输入参数：@ x ：要显示的column address
+	 			@y :要显示的page address
+	 * 输出参数： 无
+	 * 返 回 值： 
+	 * 修改日期 	   版本号	 修改人		  修改内容
+	 * -----------------------------------------------
+	 * 2020/03/15		 V1.0	  芯晓		  创建
+ ***********************************************************************/
+void OLED_DIsp_Set_Pos(int x, int y)
+{ 	
+	ioctl(fd_spidev, OLED_IOC_SET_POS, x  | (y << 8));
+}   	      	   			 
+/**********************************************************************
+	  * 函数名称： OLED_DIsp_Char
+	  * 功能描述：在某个位置显示字符 1-9
+	  * 输入参数：@ x ：要显示的column address
+		 			@y :要显示的page address
+		 			@c ：要显示的字符的ascii码
+	  * 输出参数： 无
+	  * 返 回 值： 
+	  * 修改日期		版本号	  修改人 	   修改内容
+	  * -----------------------------------------------
+	  * 2020/03/15		  V1.0	   芯晓		   创建
+***********************************************************************/
+void OLED_DIsp_Char(int x, int y, unsigned char c)
+{
+	int i = 0;
+	/* 得到字模 */
+	const unsigned char *dots = oled_asc2_8x16[c - ' '];
+
+	/* 发给OLED */
+	OLED_DIsp_Set_Pos(x, y);
+	/* 发出8字节数据 */
+	//for (i = 0; i < 8; i++)
+	//	oled_write_cmd_data(dots[i], OLED_DATA);
+	oled_write_datas(&dots[0], 8);
+
+	OLED_DIsp_Set_Pos(x, y+1);
+	/* 发出8字节数据 */
+	//for (i = 0; i < 8; i++)
+		//oled_write_cmd_data(dots[i+8], OLED_DATA);
+	oled_write_datas(&dots[8], 8);
+}
+
+
+/**********************************************************************
+	 * 函数名称： OLED_DIsp_String
+	 * 功能描述： 在指定位置显示字符串
+	 * 输入参数：@ x ：要显示的column address
+		 			@y :要显示的page address
+		 			@str ：要显示的字符串
+	 * 输出参数： 无
+	 * 返 回 值： 无
+	 * 修改日期 	   版本号	 修改人		  修改内容
+	 * -----------------------------------------------
+	 * 2020/03/15		 V1.0	  芯晓		  创建
+***********************************************************************/
+void OLED_DIsp_String(int x, int y, char *str)
+{
+	unsigned char j=0;
+	while (str[j])
+	{		
+		OLED_DIsp_Char(x, y, str[j]);//显示单个字符
+		x += 8;
+		if(x > 127)
+		{
+			x = 0;
+			y += 2;
+		}//移动显示位置
+		j++;
+	}
+}
+/**********************************************************************
+	 * 函数名称： OLED_DIsp_CHinese
+	 * 功能描述：在指定位置显示汉字
+	 * 输入参数：@ x ：要显示的column address
+		 			@y :要显示的page address
+		 			@chr ：要显示的汉字，三个汉字“百问网”中选择一个
+	 * 输出参数： 无
+	 * 返 回 值： 无
+	 * 修改日期 	   版本号	 修改人		  修改内容
+	 * -----------------------------------------------
+	 * 2020/03/15		 V1.0	  芯晓		  创建
+ ***********************************************************************/
+
+void OLED_DIsp_CHinese(unsigned char x,unsigned char y,unsigned char no)
+{      			    
+	unsigned char t,adder=0;
+	OLED_DIsp_Set_Pos(x,y);	
+    for(t=0;t<16;t++)
+	{//显示上半截字符	
+		oled_write_datas(&hz_1616[no][t*2], 1);
+		adder+=1;
+    }	
+	OLED_DIsp_Set_Pos(x,y+1);	
+    for(t=0;t<16;t++)
+	{//显示下半截字符
+		oled_write_datas(&hz_1616[no][t*2+1], 1);
+		adder+=1;
+    }					
+}
+/**********************************************************************
+	 * 函数名称： OLED_DIsp_Test
+	 * 功能描述： 整个屏幕显示测试
+	 * 输入参数：无
+	 * 输出参数： 无
+	 * 返 回 值： 无
+	 * 修改日期 	   版本号	 修改人		  修改内容
+	 * -----------------------------------------------
+	 * 2020/03/15		 V1.0	  芯晓		  创建
+ ***********************************************************************/
+void OLED_DIsp_Test(void)
+{ 	
+	int i;
+	
+	OLED_DIsp_String(0, 0, "wiki.100ask.net");
+	OLED_DIsp_String(0, 2, "book.100ask.net");
+	OLED_DIsp_String(0, 4, "bbs.100ask.net");
+	
+	for(i = 0; i < 3; i++)
+	{   //显示汉字 百问网
+		OLED_DIsp_CHinese(32+i*16, 6, i);
+	}
+} 
+
+/* spi_oled /dev/100ask_oled */
+int main(int argc, char **argv)
+{	
+	if (argc != 2)
+	{
+		printf("Usage: %s /dev/100ask_oled\n", argv[0]);
+		return -1;
+	}
+
+	fd_spidev = open(argv[1], O_RDWR);
+	if (fd_spidev < 0) {
+		printf("open %s err\n", argv[1]);
+		return -1;
+	}
+
+
+	ioctl(fd_spidev, OLED_IOC_INIT);
+
+	OLED_DIsp_Clear();
+	
+	OLED_DIsp_Test();
+
+	return 0;
+}
+
diff --git a/STM32MP157/source/A7/11_SPI/10_oled_framebuffer_ok/spi_oled.h b/STM32MP157/source/A7/11_SPI/10_oled_framebuffer_ok/spi_oled.h
new file mode 100644
index 0000000..692b290
--- /dev/null
+++ b/STM32MP157/source/A7/11_SPI/10_oled_framebuffer_ok/spi_oled.h
@@ -0,0 +1,17 @@
+#ifndef _OLED_H_
+#define _OLED_H_
+
+void oled_write_cmd_data(unsigned char uc_data,unsigned char uc_cmd);
+int oled_init(void);
+int oled_fill_data(unsigned char fill_Data);
+void OLED_DIsp_Clear(void);
+void OLED_DIsp_All(void);
+void OLED_DIsp_Set_Pos(int x, int y);
+void OLED_DIsp_Char(int x, int y, unsigned char c);
+void OLED_DIsp_String(int x, int y, char *str);
+void OLED_DIsp_CHinese(unsigned char x,unsigned char y,unsigned char no);
+void OLED_DIsp_Test();
+
+		  			 		  						  					  				 	   		  	  	 	  
+#endif
+