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1/16/2018 H3LIS331DL Accelerometer Breakout Hookup Guide - learn.sparkfun.com

https://learn.sparkfun.com/tutorials/h3lis331dl-accelerometer-breakout-hookup-guide?_ga=2.255828235.2084638943.1516049849-204410570.150963…

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Hardware Overview

The H3LIS331DL breakout is fairly simple.

H3LIS331DL Sensor IC - This is the sensor IC. Its operating voltage only extends up to 3.6V, so to use it with a 5V Arduino or

Arduino clone, you’ll need some kind of voltage translation! It is perfectly centered on the PCB.

I C Pull-up Resistors - The board includes pull-up resistor so you don’t need to add them externally.

I C Pull-up Resistor Isolation Jumper - If necessary, the I C pull-up resistors can be removed from the circuit by removing the

solder from this jumper.

SparkFun Standard I C Header - Most boards which can be communicated to via I C use this pinout, making it easy to stack

them or connect them in a daisy chain.

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Summary of content (7 pages)

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/16/2018 H3LIS331DL Accelerometer Breakout Hookup Guide - learn.sparkfun.com Hardware Overview The H3LIS331DL breakout is fairly simple. H3LIS331DL Sensor IC - This is the sensor IC. Its operating voltage only extends up to 3.6V, so to use it with a 5V Arduino or Arduino clone, you’ll need some kind of voltage translation! It is perfectly centered on the PCB. I2C Pull-up Resistors - The board includes pull-up resistor so you don’t need to add them externally.
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1/16/2018 H3LIS331DL Accelerometer Breakout Hookup Guide - learn.sparkfun.com SA0 Jumper - Closing this jumper changes the I2C address of the sensor from 0x19 to 0x18. CS Jumper - Removing the solder from this jumper enables SPI mode. When the part’s CS line is low at boot, it enables SPI mode. SA0 Pin - When the chip is in SPI mode, this goes from being the address select pin to being the MISO pin. https://learn.sparkfun.com/tutorials/h3lis331dl-accelerometer-breakout-hookup-guide?_ga=2.255828235.
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1/16/2018 H3LIS331DL Accelerometer Breakout Hookup Guide - learn.sparkfun.com CS Pin - Chip select for SPI mode. Unused in I2C mode. Interrupt Pins - These pins are tied to interrupts that can be setup by the software library to trigger on various conditions. Library Overview Here’s a list of the functions supported by the Arduino library for the LIS331 family.
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1/16/2018 H3LIS331DL Accelerometer Breakout Hookup Guide - learn.sparkfun.com convertToG(maxScale, reading) - Converts from raw data to an actual g-reading. The first parameter is the maximum reading for the current mode, as set by the setFullScale() function. Options are 6/12/24g for the LIS331HH and 100/200/400g for the H3LIS331DL. setHighPassCoeff(high_pass_cutoff_freq_cfg hpcoeff) - Set the coefficient for the high pass filter.
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1/16/2018 H3LIS331DL Accelerometer Breakout Hookup Guide - learn.sparkfun.com SPI Mode In SPI mode, the SDA pin becomes MOSI, the SCL pin becomes clock, the address select pin SA0 become MISO, and the CS pin is used for chip select. https://learn.sparkfun.com/tutorials/h3lis331dl-accelerometer-breakout-hookup-guide?_ga=2.255828235.2084638943.1516049849-204410570.
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1/16/2018 H3LIS331DL Accelerometer Breakout Hookup Guide - learn.sparkfun.com Example Code Note: This example assumes you are using the latest version of the Arduino IDE on your desktop. If this is your first time using Arduino, please review our tutorial on installing the Arduino IDE. If you have not previously installed an Arduino library, please check out our installation guide. You will also need FTDI drivers installed in order to upload code to the Arduino Pro.
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1/16/2018 H3LIS331DL Accelerometer Breakout Hookup Guide - learn.sparkfun.com xl.setI2CAddr(0x19); // This MUST be called BEFORE .begin() so // .begin() can communicate with the chip xl.begin(LIS331::USE_I2C); // Selects the bus to be used and sets // the power up bit on the accelerometer. // Also zeroes out all accelerometer // registers that are user writable. SPI Mode Setup Here we have the first few lines of an SPI mode sketch. Again, order is important: pinMode() , SPI.begin() , and xl.