SimpleDHT | Fast Arduino Temp & Humidity Sensors

by winlinvip C++ Version: 1.0.15 License: MIT

X-Ray Key Features Code Snippets Community Discussions(1)Vulnerabilities Install Support

kandi X-RAY | SimpleDHT Summary

SimpleDHT is a C++ library typically used in Internet of Things (IoT), Raspberry Pi, Arduino applications. SimpleDHT has no bugs, it has no vulnerabilities, it has a Permissive License and it has low support. You can download it from GitHub.

Simple, Stable and Fast Arduino Temp & Humidity Sensors for DHT11 and DHT22. http://learn.adafruit.com/dht

Support

Quality

Security

License

Reuse

Support

SimpleDHT has a low active ecosystem.

It has 129 star(s) with 59 fork(s). There are 4 watchers for this library.

It had no major release in the last 12 months.

There are 4 open issues and 32 have been closed. On average issues are closed in 202 days. There are no pull requests.

It has a neutral sentiment in the developer community.

The latest version of SimpleDHT is 1.0.15

Quality

SimpleDHT has 0 bugs and 0 code smells.

Security

SimpleDHT has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

SimpleDHT code analysis shows 0 unresolved vulnerabilities.

There are 0 security hotspots that need review.

License

SimpleDHT is licensed under the MIT License. This license is Permissive.

Permissive licenses have the least restrictions, and you can use them in most projects.

Reuse

SimpleDHT releases are available to install and integrate.

Installation instructions are not available. Examples and code snippets are available.

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SimpleDHT Key Features

No Key Features are available at this moment for SimpleDHT.

SimpleDHT Examples and Code Snippets

No Code Snippets are available at this moment for SimpleDHT.

Community Discussions

Trending Discussions on SimpleDHT

Arduino JSON package - formatting sensor value

QUESTION

Arduino JSON package - formatting sensor value

Asked 2019-Mar-22 at 20:09

#include 
#include 

String input = "{\"temperature\":\"26\"};
SimpleDHT11 dht11;
byte temperature = 0;
int err = SimpleDHTErrSuccess;

void loop {

   StaticJsonBuffer<512> dataBuffer;

   if (err = dht11.read(2, &temperature, NULL)) == simpleDHTErrSuccess) {
       Serial.print((int) temperature);
       JsonObject& dataRoot = dataBuffer.parseObject(input);

       *long Temperature = dataRoot[String("temperature")];
       *Temperature = (long)temperature;
       *dataRoot[String("temperature")] = Temperature;

       String output;
       dataRoot.printTo(output);
}

...

ANSWER

Answered 2019-Mar-22 at 20:09

The method parseObject() allocates and populate a JsonObject (that you can work with) from a JSON string.

The "JsonObject" in your code example is named dataRoot and is defined with

JsonObject& dataRoot = dataBuffer.parseObject(input);

where dataBuffer comes from StaticJsonBuffer<512> dataBuffer; which is the entry point for using the ArduinoJson library, and

where input has the value of the JSON string "{\"temperature\":\"26\"}" which follows the standard JSON attribute-value pair format (you need a JSON string to work with and then send it to the client side).

After JsonObject& dataRoot = dataBuffer.parseObject(input); is executed, you get dataRoot as an object with a property named temperature and you can access this property with dataRoot[String("temperature")]

So the three lines:

Source https://stackoverflow.com/questions/55299956

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

No vulnerabilities reported

Install SimpleDHT

You can download it from GitHub.

Support

[Arduino #4469: Add SimpleDHT library.](https://github.com/arduino/Arduino/issues/4469). [DHT11 datasheet and protocol.](https://akizukidenshi.com/download/ds/aosong/DHT11.pdf). [DHT22 datasheet and protoocl.](http://akizukidenshi.com/download/ds/aosong/AM2302.pdf).

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