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LibDriver QMC5883L
The QMC5883L is a multi-chip three-axis magnetic sensor. This surface -mount, small sized chip has integrated magnetic sensors with signal condition ASIC, targeted for high precision applications such as compassing, navigation and gaming in drone, robot, mobile and personal hand-held devices.The QMC5883L is based on our state-of-the-art, high resolution, magneto-resistive technology licensed from Honeywell AMR technology. Along with custom-designed 16-bit ADC ASIC, it offers the advantages of low noise, high accuracy, low power consumption, offset cancellation and temperature compensation. QMC5883L enables 1° to 2° compass heading accuracy. The I²C serial bus allows for easy interface.
LibDriver QMC5883L is a full-featured driver for QMC5883L, launched by LibDriver.It provides magnetic field reading and additional features. LibDriver complies with MISRA.
Table of Contents
Instruction
/src includes LibDriver QMC5883L source files.
/interface includes LibDriver QMC5883L IIC platform independent template.
/test includes LibDriver QMC5883L driver test code and this code can test the chip necessary function simply.
/example includes LibDriver QMC5883L sample code.
/doc includes LibDriver QMC5883L offline document.
/datasheet includes QMC5883L 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 IIC platform independent template and finish your platform IIC driver.
Add the /src directory, the interface driver for your platform, and your own drivers to your project, if you want to use the default example drivers, add the /example directory to your project.
Usage
You can refer to the examples in the /example directory to complete your own driver. If you want to use the default programming examples, here’s how to use them.
example basic
#include "driver_qmc5883l_basic.h"
uint8_t res;
uint8_t i;
float m_gauss[3];
res = qmc5883l_basic_init();
if (res != 0)
{
return 1;
}
...
for (i = 0; i < 3; i++)
{
qmc5883l_interface_delay_ms(1000);
res = qmc5883l_basic_read((float *)m_gauss);
if (res != 0)
{
(void)qmc5883l_basic_deinit();
return 1;
}
qmc5883l_interface_debug_print("qmc5883l: x is %0.3f.\n", m_gauss[0]);
qmc5883l_interface_debug_print("qmc5883l: y is %0.3f.\n", m_gauss[1]);
qmc5883l_interface_debug_print("qmc5883l: z is %0.3f.\n", m_gauss[2]);
...
}
...
(void)qmc5883l_basic_deinit();
return 0;
Document
Online documents: https://www.libdriver.com/docs/qmc5883l/index.html.
Offline documents: /doc/html/index.html.
Contributing
Please refer to CONTRIBUTING.md.
License
Copyright © 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.
Please send an e-mail to [email protected].
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