diff --git a/README.md b/README.md
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--- a/README.md
+++ b/README.md
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 # ds18b20
 
-ds18b20 linux driver
\ No newline at end of file
+ds18b20 linux driver
+
+
+-----
+## 复位时序
+![复位时序](https://git.shuixx.com/shuixx/ds18b20/raw/master/doc/reset.png)
+## 读时序
+![读时序](https://git.shuixx.com/shuixx/ds18b20/raw/master/doc/read.png)
+## 写时序
+![写时序](https://git.shuixx.com/shuixx/ds18b20/raw/master/doc/write.png)
diff --git a/doc/README.md b/doc/README.md
new file mode 100644
index 0000000..d575bb4
--- /dev/null
+++ b/doc/README.md
@@ -0,0 +1,6 @@
+## 复位时序
+![复位时序](https://git.shuixx.com/shuixx/ds18b20/raw/master/doc/reset.png)
+## 读时序
+![读时序](https://git.shuixx.com/shuixx/ds18b20/raw/master/doc/read.png)
+## 写时序
+![写时序](https://git.shuixx.com/shuixx/ds18b20/raw/master/doc/write.png)
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