STMicroelectronics acc44 accelerometer sensor device driver for Google nanohub. The driver uses the device in high-resolution mode with FS=8g.

This drivers support following devices: - LIS2DW12

• Supported features:

A. Reports accelerometer data B. Different data rates: C. I2C protocol D. Data ready reported by interrupt

• Platform/variant porting:

The driver requires that following macros are defined in the variant.h file of the specific variant:

ST_ACC44_I2C_BUS_ID /* specify I2C Bus ID / ST_ACC44_I2C_SPEED / specify I2C Bus speed in hz / ST_ACC44_I2C_ADDR / specify device I2C address */

ST_ACC44_INT_PIN /* specify the gpio used for the DRDY irq / ST_ACC44_INT_IRQ / specify the exti interrupt of ST_ACC44_INT_PIN */

ST_ACC44_TO_ANDROID_COORDINATE(x, y, z) /* specify how axis has to be rotated according to variant platform * orientation. */

Example:

/*

• Define platform/variant dependent ST_ACC44 device macros */ #define ST_ACC44_DBG_ENABLED 1

/* I2C defs to be used when device is plugged to I2C bus */ #define ST_ACC44_I2C_BUS_ID 0 #define ST_ACC44_I2C_SPEED 400000 #define ST_ACC44_I2C_ADDR 0x19

#define ST_ACC44_INT_PIN GPIO_PC(5) #define ST_ACC44_INT_IRQ EXTI9_5_IRQn

#define ST_ACC44_TO_ANDROID_COORDINATE(x, y, z)
do {
float xi = x, yi = y, zi = z;
x = xi; y = yi; z = zi;
} while (0)

If these macros are not defined in the current variant the driver forces a compilation error.