MSA311 is a tri-axial, low-g accelerometer with I2C digital output for sensitivity consumer applications. It has dynamical user selectable full scales range of +-2g/+-4g/+-8g/+-16g and allows acceleration measurements with output data rates from 1Hz to 1000Hz. Datasheet can be found at following URL: https://cdn-shop.adafruit.com/product-files/5309/MSA311-V1.1-ENG.pdf This driver supports following MSA311 features: - IIO interface - Different power modes: NORMAL, SUSPEND and LOW (using pm_runtime) - ODR (Output Data Rate) selection - Scale and samp_freq selection - IIO triggered buffer, IIO reg access - NEW_DATA interrupt + trigger Below features to be done: - Motion Events: ACTIVE, TAP, ORIENT, FREEFALL Also this patchset has new vendor prefix for MEMSensing Microsystems and MSA311 dt-binding schema. You can test msa311 driver using libiio and gnuplot following below instructions: $ # Read 4K samples using buffer with depth equals to 64 samples and $ # rotate device a little bit $ iio_readdev -u "local:" -b 64 -s 4096 msa311 > /data/local/tmp/msa311.dat $ gnuplot gnuplot> set title "MSA311 Accel Data" gnuplot> gnuplot> set key below gnuplot> gnuplot> set xdata time gnuplot> set format x "%H:%M\n%.4S" gnuplot> set xlabel "timestamp" gnuplot> gnuplot> set autoscale y gnuplot> plot 'msa311.dat' binary format='%int16%int16%int16%uint16%uint64'\ > using ($5/1000000000):1 title "acc_x" with lines,\ > 'msa311.dat' binary format='%int16%int16%int16%uint16%uint64' using\ > ($5/1000000000):2 title "acc_y" with lines,\ > 'msa311.dat' binary format='%int16%int16%int16%uint16%uint64' using\ > ($5/1000000000):3 title "acc_z" with lines Dmitry Rokosov (3): dt-bindings: vendor-prefixes: add MEMSensing Microsystems Co., Ltd. iio: add MEMSensing MSA311 3-axis accelerometer driver dt-bindings: iio: accel: add dt-binding schema for msa311 accel driver .../bindings/iio/accel/memsensing,msa311.yaml | 64 + .../devicetree/bindings/vendor-prefixes.yaml | 2 + MAINTAINERS | 7 + drivers/iio/accel/Kconfig | 13 + drivers/iio/accel/Makefile | 2 + drivers/iio/accel/msa311.c | 2068 ++++++++++++++++++++ 6 files changed, 2156 insertions(+) create mode 100644 Documentation/devicetree/bindings/iio/accel/memsensing,msa311.yaml create mode 100644 drivers/iio/accel/msa311.c -- 2.9.5
