From 3400a79035a31e9b2d13ebe4c7c27998f4133183 Mon Sep 17 00:00:00 2001
From: SNOWA <wlmsingle@163.com>
Date: Tue, 18 Oct 2022 15:51:40 +0800
Subject: [PATCH] Update at_utils.c
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如果打印格式为"%02X"的数据大于0x7F,打印的数据就会在前面多出6个'F',原因详见https://blog.csdn.net/zqxwce821/article/details/53011925。
现在通过强制转换成unsigned char后，在STM32（KEIL5+C99）已测试确认能修复该问题。
---
 components/net/at/src/at_utils.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/components/net/at/src/at_utils.c b/components/net/at/src/at_utils.c
index 028f262566..736d567dfa 100644
--- a/components/net/at/src/at_utils.c
+++ b/components/net/at/src/at_utils.c
@@ -36,7 +36,7 @@ void at_print_raw_cmd(const char *name, const char *buf, rt_size_t size)
         {
             if (i + j < size)
             {
-                rt_kprintf("%02X ", buf[i + j]);
+                rt_kprintf("%02X ", (unsigned char)buf[i + j]);
             }
             else
             {
-- 
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