diff --git a/IMX6ULL/doc_pic/11_SPI/16_使用Framebuffer改造OLED驱动.md b/IMX6ULL/doc_pic/11_SPI/16_使用Framebuffer改造OLED驱动.md
new file mode 100644
index 0000000..2f902de
--- /dev/null
+++ b/IMX6ULL/doc_pic/11_SPI/16_使用Framebuffer改造OLED驱动.md
@@ -0,0 +1,68 @@
+# 使用Framebuffer改造OLED驱动 #
+
+* 源码:
+
+  ![image-20220429174003143](pic/77_src_oled_framebuffer.png)
+
+## 1. 思路
+
+![image-20220429173507474](pic/76_framebuffer_and_oled_gram.png)
+
+假设OLED的每个像素使用1位数据表示:
+
+* Linux Framebuffer中byte0对应OLED上第1行的8个像素
+* OLED显存中byte0对应OLED上第1列的8个像素
+
+
+
+为了兼容基于Framebuffer的程序，驱动程序中分配一块Framebuffer，APP直接操作Framebuffer。
+
+驱动程序周期性地把Framebuffer中的数据搬移到OLED显存上。
+
+怎么搬移？
+
+发给OLED线程的byte0、1、2、3、4、5、6、7怎么构造出来？
+
+* 它们来自Framebuffer的byte0、16、32、48、64、80、96、112
+* OLED的byte0，由Framebuffer的这8个字节的bit0组合得到
+* OLED的byte1，由Framebuffer的这8个字节的bit1组合得到
+* OLED的byte2，由Framebuffer的这8个字节的bit2组合得到
+* OLED的byte3，由Framebuffer的这8个字节的bit3组合得到
+* ……
+
+
+
+
+
+## 2. 编程
+
+### 2.1 Framebuffer编程
+
+分配、设置、注册fb_info结构体。
+
+* 分配fb_info
+* 设置fb_info
+  * fb_var
+  * fb_fix
+* 注册fb_info
+* 硬件操作
+
+
+
+### 2.2 数据搬移
+
+创建内核线程，周期性地把Framebuffer中的数据通过SPI发送给OLED。
+
+内核线程
+
+* 参考函数：kernel_thread、kthread_create、 kthread_run
+* 参考文章：https://blog.csdn.net/qq_37858386/article/details/115573565
+
+
+
+### 2.3 调试
+
+配置内核，把下列配置项去掉：
+
+![image-20220125212414098](pic/78_disable_framebuffer_console.png)
+
diff --git a/IMX6ULL/doc_pic/11_SPI/16_使用Framebuffer改造OLED驱动.tif b/IMX6ULL/doc_pic/11_SPI/16_使用Framebuffer改造OLED驱动.tif
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diff --git a/IMX6ULL/doc_pic/11_SPI/pic/76_framebuffer_and_oled_gram.png b/IMX6ULL/doc_pic/11_SPI/pic/76_framebuffer_and_oled_gram.png
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index 0000000..3ef1229
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diff --git a/IMX6ULL/doc_pic/11_SPI/pic/77_src_oled_framebuffer.png b/IMX6ULL/doc_pic/11_SPI/pic/77_src_oled_framebuffer.png
new file mode 100644
index 0000000..7cc2632
Binary files /dev/null and b/IMX6ULL/doc_pic/11_SPI/pic/77_src_oled_framebuffer.png differ
diff --git a/IMX6ULL/doc_pic/11_SPI/pic/78_disable_framebuffer_console.png b/IMX6ULL/doc_pic/11_SPI/pic/78_disable_framebuffer_console.png
new file mode 100644
index 0000000..86875e7
Binary files /dev/null and b/IMX6ULL/doc_pic/11_SPI/pic/78_disable_framebuffer_console.png differ
diff --git a/IMX6ULL/source/11_SPI/09_oled_framebuffer/Makefile b/IMX6ULL/source/11_SPI/09_oled_framebuffer/Makefile
new file mode 100644
index 0000000..2b47cb9
--- /dev/null
+++ b/IMX6ULL/source/11_SPI/09_oled_framebuffer/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/09_oled_framebuffer/font.h b/IMX6ULL/source/11_SPI/09_oled_framebuffer/font.h
new file mode 100644
index 0000000..5698917
--- /dev/null
+++ b/IMX6ULL/source/11_SPI/09_oled_framebuffer/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/09_oled_framebuffer/oled_drv.c b/IMX6ULL/source/11_SPI/09_oled_framebuffer/oled_drv.c
new file mode 100644
index 0000000..27103b8
--- /dev/null
+++ b/IMX6ULL/source/11_SPI/09_oled_framebuffer/oled_drv.c
@@ -0,0 +1,299 @@
+/*
+ * 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>
+
+
+#define OLED_IOC_INIT 			123
+#define OLED_IOC_SET_POS 		124
+
+//�? 表示命令，为1表示数据
+#define OLED_CMD 	0
+#define OLED_DATA 	1
+
+
+
+/*-------------------------------------------------------------------------*/
+
+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�?	 * 输入参数：@uc_data :要写入的数据
+	 			@uc_cmd:�?则表示写入数据，�?表示写入命令
+	 * 输出参数：无
+	 * �?�?值： �?	 * 修改日期 	   版本�? 修改�?	  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�?	}
+	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�?	 * 输入参数：无
+	 * 输出参数�?初始化的结果
+	 * �?�?值： 成功则返�?，否则返�?1
+	 * 修改日期 	   版本�? 修改�?	  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�?	 * 输入参数：@ x ：要显示的column address
+	 			@y :要显示的page address
+	 * 输出参数�?�?	 * �?�?值： 
+	 * 修改日期 	   版本�? 修改�?	  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�?	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 spidev_probe(struct spi_device *spi)
+{
+	/* 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);
+
+	return 0;
+}
+
+static int spidev_remove(struct spi_device *spi)
+{
+	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/09_oled_framebuffer/spi_oled.c b/IMX6ULL/source/11_SPI/09_oled_framebuffer/spi_oled.c
new file mode 100644
index 0000000..98810de
--- /dev/null
+++ b/IMX6ULL/source/11_SPI/09_oled_framebuffer/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/09_oled_framebuffer/spi_oled.h b/IMX6ULL/source/11_SPI/09_oled_framebuffer/spi_oled.h
new file mode 100644
index 0000000..692b290
--- /dev/null
+++ b/IMX6ULL/source/11_SPI/09_oled_framebuffer/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/STM32MP157/source/A7/11_SPI/09_oled_framebuffer/Makefile b/STM32MP157/source/A7/11_SPI/09_oled_framebuffer/Makefile
new file mode 100644
index 0000000..2b47cb9
--- /dev/null
+++ b/STM32MP157/source/A7/11_SPI/09_oled_framebuffer/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/STM32MP157/source/A7/11_SPI/09_oled_framebuffer/font.h b/STM32MP157/source/A7/11_SPI/09_oled_framebuffer/font.h
new file mode 100644
index 0000000..5698917
--- /dev/null
+++ b/STM32MP157/source/A7/11_SPI/09_oled_framebuffer/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/09_oled_framebuffer/oled_drv.c b/STM32MP157/source/A7/11_SPI/09_oled_framebuffer/oled_drv.c
new file mode 100644
index 0000000..27103b8
--- /dev/null
+++ b/STM32MP157/source/A7/11_SPI/09_oled_framebuffer/oled_drv.c
@@ -0,0 +1,299 @@
+/*
+ * 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>
+
+
+#define OLED_IOC_INIT 			123
+#define OLED_IOC_SET_POS 		124
+
+//�? 表示命令，为1表示数据
+#define OLED_CMD 	0
+#define OLED_DATA 	1
+
+
+
+/*-------------------------------------------------------------------------*/
+
+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�?	 * 输入参数：@uc_data :要写入的数据
+	 			@uc_cmd:�?则表示写入数据，�?表示写入命令
+	 * 输出参数：无
+	 * �?�?值： �?	 * 修改日期 	   版本�? 修改�?	  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�?	}
+	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�?	 * 输入参数：无
+	 * 输出参数�?初始化的结果
+	 * �?�?值： 成功则返�?，否则返�?1
+	 * 修改日期 	   版本�? 修改�?	  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�?	 * 输入参数：@ x ：要显示的column address
+	 			@y :要显示的page address
+	 * 输出参数�?�?	 * �?�?值： 
+	 * 修改日期 	   版本�? 修改�?	  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�?	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 spidev_probe(struct spi_device *spi)
+{
+	/* 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);
+
+	return 0;
+}
+
+static int spidev_remove(struct spi_device *spi)
+{
+	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/09_oled_framebuffer/spi_oled.c b/STM32MP157/source/A7/11_SPI/09_oled_framebuffer/spi_oled.c
new file mode 100644
index 0000000..98810de
--- /dev/null
+++ b/STM32MP157/source/A7/11_SPI/09_oled_framebuffer/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/09_oled_framebuffer/spi_oled.h b/STM32MP157/source/A7/11_SPI/09_oled_framebuffer/spi_oled.h
new file mode 100644
index 0000000..692b290
--- /dev/null
+++ b/STM32MP157/source/A7/11_SPI/09_oled_framebuffer/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
+