已使用: C:\Users\zz\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\3.1.2\libraries\ESP8266WiFi "AliyunIoTSDK.h" 对应多个库
时间: 2024-03-22 13:35:43 浏览: 368
在Arduino开发中,C:\Users\zz\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\3.1.2\libraries\ESP8266WiFi是ESP8266WiFi库的路径。ESP8266WiFi库是一个用于连接ESP8266模块到WiFi网络的库,它提供了一系列函数和方法来实现WiFi连接和通信。
而"AliyunIoTSDK.h"是阿里云物联网平台的SDK库的头文件。阿里云物联网平台是一个用于连接和管理物联网设备的云平台,"AliyunIoTSDK.h"库提供了与阿里云物联网平台进行通信的功能,包括设备注册、数据上传、命令下发等。
这两个库是独立的,分别用于不同的功能。ESP8266WiFi库用于连接WiFi网络,而"AliyunIoTSDK.h"库用于与阿里云物联网平台进行通信。你可以根据自己的需求选择使用其中一个或同时使用它们。
相关问题
C:\Users\conservator\Desktop\mqttToAliyun\mqttToAliyun.ino: In function 'void get_value()': C:\Users\conservator\Desktop\mqttToAliyun\mqttToAliyun.ino:128:34: error: no matching function for call to 'println(const char [3], int&)' 128 | Serial.println("%d",sensor[0]); | ^ In file included from C:\Users\conservator\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\3.1.2\cores\esp8266/Stream.h:27, from C:\Users\conservator\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\3.1.2\cores\esp8266/HardwareSerial.h:32, from C:\Users\conservator\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\3.1.2\cores\esp8266/Arduino.h:303, from C:\Users\conservator\AppData\Local\Temp\arduino\sketches\304EB848CF381B8A7A8E84D646752A81\sketch\mqttToAliyun.ino.cpp:1: C:\Users\conservator\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\3.1.2\cores\esp8266/Print.h:102:16: note: candidate: 'size_t Print::println(unsigned char, int)' (near match) 102 | size_t println(unsigned char, int = DEC); | ^~~~~~~ C:\Users\conservator\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\3.1.2\cores\esp8266/Print.h:102:16: note: conversion of argument 1 would be ill-formed: C:\Users\conservator\Desktop\mqttToAliyun\mqttToAliyun.ino:128:20: error: invalid conversion from 'const char*' to 'unsigned char' [-fpermissive] 128 | Serial.println("%d",sensor[0]); | ^~~~ | | | const char* In file included from C:\Users\conservator\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\3.1.2\cores\esp8266/Stream.h:27, from C:\Users\conservator\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\3.1.2\cores\esp8266/HardwareSerial.h:32, from C:\Users\conservator\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\3.1.2\cores\esp8266/Arduino.h:303, from C:\Users\conservator\AppData\Local\Temp\arduino\sketches\304EB848CF381B8A7A8E84D646752A81\sketch\mqttToAliyun.ino.cpp:1: C:\Users\conservator\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\3.1.2\cores\esp8266/Print.h:103:16: note: candidate: 'size_t Print::println(int, int)' (near match) 103 | size_t println(int, int = DEC); | ^~~~~~~ C:\Users\conservator\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\3.1.2\cores\esp8266/Print.h:103:16: note: conversion of argument 1 would be ill-formed: C:\Users\conservator\Desktop\mqttToAliyun\mqttToAliyun.ino:128:20: error: invalid conversion from 'const char*' to 'int' [-fpermissive] 128 | Serial.println("%d",sensor[0]);
这个错误是因为在你的代码中,`Serial.println()` 函数的参数传递方式不正确。`println()` 函数的第一个参数应该是一个字符串,而你传递了一个格式化字符串。正确的用法是使用 `Serial.print()` 函数来打印格式化字符串。以下是修正后的代码示例:
```cpp
Serial.print("%d");
Serial.println(sensor[0]);
```
这样就能正确打印传感器值了。记得在修改完代码后重新编译和上传到你的硬件设备上。
| const char* In file included from C:\Users\conservator\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\3.1.2\cores\esp8266/Stream.h:27, from C:\Users\conservator\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\3.1.2\cores\esp8266/HardwareSerial.h:32, from C:\Users\conservator\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\3.1.2\cores\esp8266/Arduino.h:303, from C:\Users\conservator\AppData\Local\Temp\arduino\sketches\304EB848CF381B8A7A8E84D646752A81\sketch\mqttToAliyun.ino.cpp:1: C:\Users\conservator\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\3.1.2\cores\esp8266/Print.h:105:16: note: candidate: 'size_t Print::println(long int, int)' (near match) 105 | size_t println(long, int = DEC); | ^~~~~~~ C:\Users\conservator\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\3.1.2\cores\esp8266/Print.h:105:16: note: conversion of argument 1 would be ill-formed: C:\Users\conservator\Desktop\mqttToAliyun\mqttToAliyun.ino:130:24: error: invalid conversion from 'const char*' to 'long int' [-fpermissive] 130 | Serial.println("%d",sensor[2]);
这个错误是因为在第130行中,你尝试将一个 `const char*` 类型的字符串传递给 `println` 函数,而 `println` 函数的参数应该是一个 `long int` 类型的整数。这样的类型不匹配导致了编译错误。
要解决这个问题,你需要将传递给 `println` 函数的参数转换为 `long int` 类型。你可以使用 `atol` 函数将字符串转换为长整数,然后再传递给 `println` 函数。下面是一个可能的解决方法:
```cpp
Serial.println(atol(sensor[2]));
```
这样,`atol` 函数将 `sensor[2]` 字符串转换为长整数,然后将其传递给 `println` 函数。请确保在使用 `atol` 函数之前,你已经包含了 `<cstdlib>` 头文件。
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