1 STMicroelectronics acc44 accelerometer sensor device driver for Google nanohub. 2 The driver uses the device in high-resolution mode with FS=8g. 3 4 This drivers support following devices: 5 - LIS2DW12 6 7 - Supported features: 8 9 A. Reports accelerometer data 10 B. Different data rates: 11 C. I2C protocol 12 D. Data ready reported by interrupt 13 14 15 - Platform/variant porting: 16 17 The driver requires that following macros are defined in the variant.h 18 file of the specific variant: 19 20 ST_ACC44_I2C_BUS_ID /* specify I2C Bus ID */ 21 ST_ACC44_I2C_SPEED /* specify I2C Bus speed in hz */ 22 ST_ACC44_I2C_ADDR /* specify device I2C address */ 23 24 ST_ACC44_INT_PIN /* specify the gpio used for the DRDY irq */ 25 ST_ACC44_INT_IRQ /* specify the exti interrupt of ST_ACC44_INT_PIN */ 26 27 ST_ACC44_TO_ANDROID_COORDINATE(x, y, z) 28 /* specify how axis has to be rotated according to variant platform 29 * orientation. 30 */ 31 32 Example: 33 34 /* 35 * Define platform/variant dependent ST_ACC44 device macros 36 */ 37 #define ST_ACC44_DBG_ENABLED 1 38 39 /* I2C defs to be used when device is plugged to I2C bus */ 40 #define ST_ACC44_I2C_BUS_ID 0 41 #define ST_ACC44_I2C_SPEED 400000 42 #define ST_ACC44_I2C_ADDR 0x19 43 44 #define ST_ACC44_INT_PIN GPIO_PC(5) 45 #define ST_ACC44_INT_IRQ EXTI9_5_IRQn 46 47 #define ST_ACC44_TO_ANDROID_COORDINATE(x, y, z) \ 48 do { \ 49 float xi = x, yi = y, zi = z; \ 50 x = xi; y = yi; z = zi; \ 51 } while (0) 52 53 If these macros are not defined in the current variant the driver forces a compilation 54 error. 55
