diff --git a/README.md b/README.md
index c5d0085..f694e5c 100644
--- a/README.md
+++ b/README.md
@@ -40,6 +40,10 @@
 
 [iwdt_demo](http://192.168.1.3:3000/weizhuangzhuang/ES8P5066_IWDT_DEMO)
 
+## PWM每1s增加1Khz
+
+[pwm每1s增加1khz](./doc/PWM每1s增加1KHZ.md)
+
 ## 项目需求
 
 v1.0:[软件需求.pdf](./doc/软件需求.pdf)
diff --git a/doc/PWM每1s增加1KHZ.md b/doc/PWM每1s增加1KHZ.md
new file mode 100644
index 0000000..d487125
--- /dev/null
+++ b/doc/PWM每1s增加1KHZ.md
@@ -0,0 +1,13 @@
+# PWM每1s增加1KHZ
+
+```
+pwm.c实现
+```
+
+![image-20220308164037665](markdown.assets/PWM%E6%AF%8F1s%E5%A2%9E%E5%8A%A01KHZ.assets/image-20220308164037665.png)
+
+```
+main中调用
+```
+
+![image-20220308164114341](markdown.assets/PWM%E6%AF%8F1s%E5%A2%9E%E5%8A%A01KHZ.assets/image-20220308164114341.png)
\ No newline at end of file
diff --git a/doc/markdown.assets/PWM每1s增加1KHZ.assets/image-20220308164037665.png b/doc/markdown.assets/PWM每1s增加1KHZ.assets/image-20220308164037665.png
new file mode 100644
index 0000000..4e005bd
Binary files /dev/null and b/doc/markdown.assets/PWM每1s增加1KHZ.assets/image-20220308164037665.png differ
diff --git a/doc/markdown.assets/PWM每1s增加1KHZ.assets/image-20220308164114341.png b/doc/markdown.assets/PWM每1s增加1KHZ.assets/image-20220308164114341.png
new file mode 100644
index 0000000..77b23d3
Binary files /dev/null and b/doc/markdown.assets/PWM每1s增加1KHZ.assets/image-20220308164114341.png differ