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LibDriver DHT11
DHT11 digital temperature and humidity sensor is a temperature and humidity composite sensor with calibrated digital signal output. It uses special digital module acquisition technology and temperature and humidity sensing technology to ensure that the product has high reliability and excellent long-term stability. The sensor consists of a capacitive humidity sensor and a NTC temperature sensor, and is connected with a high-performance 8-bit MCU. The sensor has the advantages of low cost, long-term stability, relative humidity and temperature measurement, excellent quality, ultra fast response, strong anti-interference ability, ultra long signal transmission distance, digital signal output and accurate calibration. It is used in HVAC, dehumidifier, agriculture, cold chain storage, test and detection equipment, consumer goods, automobile, automatic control, data recorder, weather station, household appliances, humidity regulator, medical treatment, and other related humidity detection and control.
LibDriver DHT11 is the full function driver of DHT11 launched by LibDriver.It provides the function of reading temperature and relative humidity. LibDriver is MISRA compliant.
Table of Contents
Instruction
/src includes LibDriver DHT11 source files.
/interface includes LibDriver DHT11 onewire platform independent template.
/test includes LibDriver DHT11 driver test code and this code can test the chip necessary function simply.
/example includes LibDriver DHT11 sample code.
/doc includes LibDriver DHT11 offline document.
/datasheet includes DHT11 datasheet.
/project includes the common Linux and MCU development board sample code. All projects use the shell script to debug the driver and the detail instruction can be found in each project's README.md.
/misra includes the LibDriver MISRA code scanning results.
Install
Reference /interface onewire platform independent template and finish your platform onewire driver.
Add /src, /interface and /example to your project.
Usage
example basic
#include "driver_dht11_basic.h"
uint8_t res;
uint8_t i;
float temperature;
uint8_t humidity;
res = dht11_basic_init();
if (res != 0)
{
return 1;
}
...
for (i = 0; i < 3; i++)
{
dht11_interface_delay_ms(2000);
res = dht11_basic_read((float *)&temperature, (uint8_t *)&humidity);
if (res != 0)
{
(void)dht11_basic_deinit();
return 1;
}
dht11_interface_debug_print("dht11: temperature is %0.2fC.\n", temperature);
dht11_interface_debug_print("dht11: humidity is %d%%.\n", humidity);
...
}
...
(void)dht11_basic_deinit();
return 0;Document
Online documents: https://www.libdriver.com/docs/dht11/index.html.
Offline documents: /doc/html/index.html.
Contributing
Please refer to CONTRIBUTING.md.
License
Copyright (c) 2015 - present LibDriver All rights reserved
The MIT License (MIT)
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
Contact Us
Please sent an e-mail to [email protected].