Library 28- L3GD20 3-axis digital gyroscope

MEMS sensor L3GD20 is included on STM32F429-Discovery board, so I made a library to use it. This is 3-axis digital gyroscope, so it can measure rotation in X, Y and Z axis. L3GD20 sensor works with SPI communication, or I2C. On Discovery board is connected for SPI mode, SPI5 is used for communication.

L3GD20 can be set to work in 3 different full scales: 250, 500 and 2000 dps.

Sensor has also possibility to measure temperature, but this is not included in this library.

L3GD20 Library

Features

  • Measure 3 axis rotation
  • Enables high pass filter to stabilize output
  • Selectable 3 full scale modes

Dependencies

  • CMSIS
    • STM32F4xx
    • STM32F4xx RCC
    • STM32F4xx GPIO
    • STM32F4xx SPI
  • TM
    • TM SPI
    • TM GPIO
    • defines.h

Default pinout

Default pinout for L3GD20 sensor on F429-discovery board
L3GD20 STM32F4 Description
VCC 3.3V 3.3V power
GND GND Ground
MOSI PF9 Master Out Slave In for SPI
MISO PF8 Master In Slave Out for SPI
SCK PF7 Clock for SPI
CS PC1 Chip select for SPI

This pinout is used on F429-Discovery board by default. If you want to change your pinout for other application, add these lines in defines.h file and edit them:

Functions and enumerations

Example

Example below produces something like this:

L3GD20 3-axis digital gyroscope example

L3GD20 3-axis digital gyroscope example



View project on Github, download library below.

tilz0R

Owner of this site. Application engineer, currently employed by STMicroelectronics. Exploring latest technologies and owner of different libraries posted on Github.

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