libdriver/l3gd20h: L3GD20H full function driver library for general M...

LibDriver L3GD20H

The L3GD20H is a low-power three-axis angular rate sensor. It includes a sensing element and an IC interface able to provide the measured angular rate to the external world through digital interface (I2C/SPI).The sensing element is manufactured using a dedicated micromachining process developed by ST to produce inertial sensors and actuators on silicon wafers.The IC interface is manufactured using a CMOS process that allows a high level of integration to design a dedicated circuit which is trimmed to better match the sensing element characteristics.The L3GD20H has a full scale of ±245/±500/±2000 dps and is capable of measuring rates with a user selectable bandwidth.It can be used in gaming and virtual reality input devices,motion control with MMI (man-machine interface),GPS navigation systems,GPS navigation systems and so on.

LibDriver L3GD20H is the full function driver of L3GD20H launched by LibDriver.It provides angular velocity reading, angular velocity FIFO mode acquisition, threshold interrupt and other functions. LibDriver is MISRA compliant.

Instruction
Install
Usage
- example basic
- example fifo
- example interrupt
Document
Contributing
License
Contact Us

Instruction

/src includes LibDriver L3GD20H source files.

/interface includes LibDriver L3GD20H IIC and SPI platform independent template.

/test includes LibDriver L3GD20H driver test code and this code can test the chip necessary function simply.

/example includes LibDriver L3GD20H sample code.

/doc includes LibDriver L3GD20H offline document.

/datasheet includes L3GD20H 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 and SPI platform independent template and finish your platform IIC and SPI 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_l3gd20h_basic.h"

uint8_t res;
float dps[3];

res = l3gd20h_basic_init(L3GD20H_INTERFACE_IIC, L3GD20H_ADDRESS_SDO_0);
if (res != 0)
{
    return 1;
}

...

for (i = 0; i < 3; i++)
{
    res = l3gd20h_basic_read((float *)dps);
    if (res != 0)
    {
        (void)l3gd20h_basic_deinit();

        return 1;
    }
    l3gd20h_interface_debug_print("l3gd20h: x %0.2f dps.\n", dps[0]);
    l3gd20h_interface_debug_print("l3gd20h: y %0.2f dps.\n", dps[1]);
    l3gd20h_interface_debug_print("l3gd20h: z %0.2f dps.\n", dps[2]);
    l3gd20h_interface_delay_ms(1000);
    
    ...
    
}

...

(void)l3gd20h_basic_deinit();

return 0;

example fifo

#include "driver_l3gd20h_fifo.h"

uint8_t res;

static void a_l3gd20h_fifo_receive_callback(float (*dps)[3], uint16_t len)
{
    ...
        
    return 0;
}

res = gpio_interrupt_init();
if (res != 0)
{
    return 1;
}

res = l3gd20h_fifo_init(L3GD20H_INTERFACE_IIC, L3GD20H_ADDRESS_SDO_0, a_l3gd20h_fifo_receive_callback);
if (res != 0)
{
    (void)l3gd20h_fifo_deinit();
    (void)gpio_interrupt_deinit();

    return 1;
}

...

while (times != 0)
{

...
    
}

...

(void)l3gd20h_fifo_deinit();
(void)gpio_interrupt_deinit();

return 0;

example interrupt

#include "driver_l3gd20h_interrupt.h"

uint8_t res;

static void a_l3gd20h_interrupt_receive_callback(uint8_t type)
{
    switch (type)
    {
        case L3GD20H_INTERRUPT1_Z_HIGH :
        {
            l3gd20h_interface_debug_print("l3gd20h: irq z high threshold.\n");
            
            break;
        }
        case L3GD20H_INTERRUPT1_Y_HIGH :
        {
            l3gd20h_interface_debug_print("l3gd20h: irq y high threshold.\n");
            
            break;
        }
        case L3GD20H_INTERRUPT1_X_HIGH :
        {
            l3gd20h_interface_debug_print("l3gd20h: irq x high threshold.\n");
            
            break;
        }
        default :
        {
            break;
        }
    }
}

res = gpio_interrupt_init();
if (res != 0)
{
    return 1;
}

res = l3gd20h_interrupt_init(L3GD20H_INTERFACE_IIC, L3GD20H_ADDRESS_SDO_0, 20.f, a_l3gd20h_interrupt_receive_callback);
if (res != 0)
{
    (void)l3gd20h_interrupt_deinit();
    (void)gpio_interrupt_deinit();
    
    return 1;
}

...

while (1)
{
    
...
    
}

...

(void)l3gd20h_interrupt_deinit();
(void)gpio_interrupt_deinit();

return 0;

Document

Online documents: https://www.libdriver.com/docs/l3gd20h/index.html.

Offline documents: /doc/html/index.html.

Contributing

Please refer to CONTRIBUTING.md.

License

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].

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