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Parallax P8X32A/Propeller 1, P2X8C4M64P/Propeller 2 driver object for the STMicroelectronics LSM9DS1 IMU

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avsa242/lsm9ds1-spin

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lsm9ds1-spin


This is a P8X32A/Propeller, P2X8C4M64P/Propeller 2 driver object for the STMicroelectronics LSM9DS1 9-DoF IMU.

IMPORTANT: This software is meant to be used with the spin-standard-library (P8X32A) or p2-spin-standard-library (P2X8C4M64P). Please install the applicable library first before attempting to use this code, otherwise you will be missing several files required to build the project.

Salient Features

  • 3-Wire or 4-wire SPI connection at 1MHz (P1), up to 10MHz (P2)
  • I2C connection at up to 400kHz
  • Accelerometer data in raw or calculated output (micro-G's)
  • Gyroscope data in raw or calculated output (micro-degrees per second)
  • Magnetometer data in raw or calculated output (micro-Gauss)
  • Temperature data in calculated output (centi-degrees C)
  • Common functions for all three sensors: Full-scale, Output data rate, Per-axis Output enable, Flag indicating new data available, perform on-chip calibration, or write manually derived values, data endianness, soft-reset, read interrupts state
  • Additional Accelerometer functionality: Set high-resolution mode
  • Additional Gyroscope functionality: Set data output high-pass filter cut-off freq, set inactivity: duration, threshold, sleep on/off, low-power mode, sleep mode
  • Additional Magnetometer functionality: Built-in self-test, performance mode, flag indicating measurement overflow/saturation

Requirements

P1/SPIN1:

  • spin-standard-library
  • 1 extra core/cog for the PASM I2C or SPI engine (none, if bytecode engine is used)
  • sensor.accel.common.spinh (provided by spin-standard-library)
  • sensor.gyroscope.common.spinh (provided by spin-standard-library)
  • sensor.magnetometer.common.spinh (provided by spin-standard-library)
  • sensor.temp.common.spinh (provided by spin-standard-library)

P2/SPIN2:

  • p2-spin-standard-library
  • sensor.accel.common.spin2h (provided by p2-spin-standard-library)
  • sensor.gyroscope.common.spin2h (provided by p2-spin-standard-library)
  • sensor.magnetometer.common.spin2h (provided by p2-spin-standard-library)
  • sensor.temp.common.spin2h (provided by p2-spin-standard-library)

Compiler Compatibility

Processor Language Compiler Backend Status
P1 SPIN1 FlexSpin (6.9.4) Bytecode OK
P1 SPIN1 FlexSpin (6.9.4) Native/PASM OK
P2 SPIN2 FlexSpin (6.9.4) NuCode Build: OK Runtime: Bad
P2 SPIN2 FlexSpin (6.9.4) Native/PASM2 OK

(other versions or toolchains not listed are not supported, and may or may not work)

Limitations

  • Alternate I2C address bits of Accel/Gyro module and Mag module are currently linked (i.e., if address bit 1 is set on driver startup, both modules use that alternate address bit)