Esp32连接阿里云mqtt问题

Question

用arduino ide 2.0.4运行出现这个错误，用的板子是esp32s3，固件版本2.0.7，每次编译就卡在<SHA256.h>这个库，有人知道这是如何解决呢？谢谢（在Crypto.h的实例库里加载SHA256的其他测试例程也一样这样报错）/Users/Documents/Arduino/libraries/YYZT_AliyunMqtt/src/YYZT_AliyunMqtt.cpp: In member function 'String AliyunMqtt::hmac256(const String&, const String&)':
/Users/king.j1/Documents/Arduino/libraries/YYZT_AliyunMqtt/src/YYZT_AliyunMqtt.cpp:295:3: error: 'sha256' was not declared in this scope
sha256.resetHMAC(key, keySize);
^~~~~~
/Users/king.j1/Documents/Arduino/libraries/YYZT_AliyunMqtt/src/YYZT_AliyunMqtt.cpp:295:3: note: suggested alternative: 'hmac256'
sha256.resetHMAC(key, keySize);
^~~~~~
hmac256

Answer 1

应该是sha256初始化失败，重新安装Crypto库试试