🔥 解决 FireBeetle-ESP32 编译错误：轻松搞定WiFiClient示例！🚀

firebeetle-esp32 example错误

2018-03-298789

ArduinoPi

UID: 965

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本文解决了在使用 FireBeetle-ESP32 板子编译 WiFiClient 示例时遇到的“const char* to char*”转换错误。具体问题表现为多个 WiFi 库冲突，导致编译失败。解决方法是删除或重命名 C:\Program Files (x86)\Arduino\libraries\WiFi 文件夹，以避免与 esp32 自带的 WiFi 库冲突。通过这一简单步骤，用户可以快速解决编译错误，继续进行项目开发。

最近刚买了一个firebeetle-esp32的板子，准备编译自带的例子，WiFiClient，就出现的错误。

Arduino: 1.8.5 (Windows 10), Board: "FireBeetle-ESP32, 80MHz, 921600"

WARNING: library SPI claims to run on (esp32) architecture(s) and may be incompatible with your current board which runs on (DFRobot_FireBeetle-ESP32) architecture(s).
<command-line>:0:32: warning: ISO C++11 requires whitespace after the macro name

C:\Users\msi-\AppData\Local\Arduino15\packages\esp32\hardware\DFRobot_FireBeetle-ESP32\0.0.7\libraries\WiFi\examples\WiFiClient\WiFiClient.ino: In function 'void setup()':

WiFiClient:30: error: invalid conversion from 'const char*' to 'char*' [-fpermissive]

   WiFi.begin(ssid, password);

                           ^

In file included from C:\Users\msi-\AppData\Local\Arduino15\packages\esp32\hardware\DFRobot_FireBeetle-ESP32\0.0.7\libraries\WiFi\examples\WiFiClient\WiFiClient.ino:9:0:

C:\Program Files (x86)\Arduino\libraries\WiFi\src/WiFi.h:79:9: note: initializing argument 1 of 'int WiFiClass::begin(char*, const char*)'

   int begin(char* ssid, const char *passphrase);

      ^

Multiple libraries were found for "WiFi.h"
Used: C:\Program Files (x86)\Arduino\libraries\WiFi
Not used: C:\Users\msi-\AppData\Local\Arduino15\packages\esp32\hardware\DFRobot_FireBeetle-ESP32\0.0.7\libraries\WiFi
exit status 1
invalid conversion from 'const char*' to 'char*' [-fpermissive]

This report would have more information with
"Show verbose output during compilation"
option enabled in File -> Preferences.

esp32自带的库和官方库重名，请问各位大牛这个该如何解决？提前谢谢。

esp32.PNG (173.34 KB, 下载次数: 2445)

FireBeetle-ESP32 示例错误 · WiFiClient 编译问题_image_3.webp

评论(3)

作者

谢谢　薄荷逆袭亲自测试。
给DFRobot官方github上提交了PR了，希望能够引起他们关注。
https://github.com/DFRobot/FireBeetle-ESP32/pull/3

你的解释我试过，这个虽然能编译过，其他几个例子就过不去了，两个库wifi.h里面class实现是不一样的。理论上要用红色标记的esp32自带的库。
Multiple libraries were found for "WiFi.h"
Used: C:\Program Files (x86)\Arduino\libraries\WiFi
Not used: C:\Users\msi-\AppData\Local\Arduino15\packages\esp32\hardware\DFRobot_FireBeetle-ESP32\0.0.7\libraries\WiFi

薄荷逆袭

不是“esp32自带的库和官方库重名”的问题，是WiFi.begin(ssid, password)里面的ssid和password类型不匹配，把ssid和password定义的类型由“const char*"”改为"char*"，就可以通编译了。

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