dept-of-scrapyard-robotics/msa311

Drive MSA311 3-axis accelerometers over I2C with PHP

0.4.0 2026-06-10 02:16 UTC

Requires

• php: ^8.3
• scrapyard-io/bare-metal: ^0.4.0
• scrapyard-io/reality-interface: ^0.4.0
• scrapyard-io/waveforms: ^0.4.0

Suggests

• scrapyard-io/gpio: ^0.4.0 - For direct linux-based GPIO
• scrapyard-io/i2c: ^0.4.0 - For direct linux-based I2C
• scrapyard-io/mpsse: ^0.4.0 - For I2C/GPIO over an FTDI Serial-to-USB Device

MIT

• Angel Gonzalez

• framework
• scrapyard-io

Published on Packagist.org on 2026-07-12 17:44 UTC

README

Drive the MSA311 3-axis I2C accelerometer from PHP (ScrapyardIO 0.7).

Install

composer require dept-of-scrapyard-robotics/msa311:^0.7.0

Requires scrapyard-io/gpio-framework and scrapyard-io/waveforms (^0.7).

Quick use

use DeptOfScrapyardRobotics\Sensors\MSA311\MSA311;

$accel = MSA311::i2c('/dev/i2c-1'); // slave 0x62, boots by default
echo $accel->x(), ' ', $accel->y(), ' ', $accel->z(); // g
$accel->close();

Circuit profiles

php workshop msa311:make-profile

use GeneralPurposeIO\Core\MagicAliases\Circuit;

$accel = Circuit::profile('msa311_board');
$gX = $accel->x();

Smoke: php workshop runner msa311-smoke --profile=msa311_board

Notes

• PARTID register 0x01 must read 0x13.
• Default I2C address 0x62.
• Implements Waveforms\Contracts\Motion\MeasuresAcceleration.