From 31761bfe01051529e572125704f1b2b52031d711 Mon Sep 17 00:00:00 2001
From: wuhanstudio <wuhanstudio@qq.com>
Date: Thu, 5 May 2022 20:22:34 +0000
Subject: [PATCH] update
 rt-thread-version/rt-thread-standard/programming-manual/device/crypto/crypto.md.

---
 .../programming-manual/device/crypto/crypto.md                  | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/rt-thread-version/rt-thread-standard/programming-manual/device/crypto/crypto.md b/rt-thread-version/rt-thread-standard/programming-manual/device/crypto/crypto.md
index b8e4de3..1c8fb82 100644
--- a/rt-thread-version/rt-thread-standard/programming-manual/device/crypto/crypto.md
+++ b/rt-thread-version/rt-thread-standard/programming-manual/device/crypto/crypto.md
@@ -965,6 +965,8 @@ rt_uint32_t rt_hwcrypto_rng_update(void);
 例如检测随机数产生 1000，000 次，统计产生奇数与偶数的数量，代码如下：
 
 ```c
+#include <hw_rng.h>
+
 void hw_rng(void)
 {
     rt_uint32_t result=0;
-- 
Gitee