AMLOGIC gsensor debugging

A lot of debugging has been done in the work gsensor, Here's a summary gsensor Write about the characteristics of , Can give you reference .

One 、 Model reference

model	measuring range	Output bits	Interface	encapsulation
lis3dh	2g/±4g/8g/16g	16-bit data output	I2C/SPI digital output interface	LGA3X3
d218b	±2g, ±4g, ±8g	12 bit resolution	Digital I2C output interface	LGA-12 2x2
mc3253	±2g /± 4g /± 8g ranges	10-bit or 14-bit resolution	I2C interface, up to 400 kHz	LGA3X3
qma7981	±2/±4/±8/ ±16/±32	14-Bit	I2C Interface	LGA-12 2x2
sc7a20	±2G/±4G/±8G/±16G	12bit	i2c/spi	LGA-12 2x2

Two 、 To write gsensor Basic flow

The platform may be different , But combined with these sensors , The general compilation process is consistent .

2.1 Read WO_AM_I register

Every gsensor There will be WO_AM_I register , This register is used to determine the model of the product , This register is used before the initialization of the first version

2.2 Basic register configuration

* Sensor enable

 

* To configure ODR

 * Configure register range FS 

 2.3 XYZ Reading of values