Sensors Xplained Extension Board Configuration

The extension board configuration defines constants identifying the sensors, bus interface, I/O pin mappings, and sensor device signals from an Atmel Sensor board (ATAVRSBPR1, ATAVARSBIN1, ATAVARSBIN2, and so on) to the development platform.

See Also

Sensors Platform Board Configuration

Common Sensor Service Configuration Constants
This module defines Common Sensor API configuration constants based upon a user-specified EXT_BOARD value. The Sensor Service determines which drivers and bus interface modules to use based upon these definitions. When EXT_BOARD defines a valid Sensors Xplained board constant, a catch-all constant named SENSORS_XPLAINED_BOARD is defined so that platform, service, and other code can be conditionally configured without testing for every particular Sensors Xplained board constant. All of the following boards are compatible with the Atmel Xplained MCU boards provided the required I/O peripheral pin mapping has been added and a call to the sensor_board_init() routine has been included in the board_init() routine. ATAVRSBIN1 Inertial Sensor Board No. 1 This sensor board includes an InvenSense 3-axis gyro (ITG-3200), Bosch 3-axis accelerometer (BMA150), and AKM 3-axis magnetometer (AK8975). These sensors are interfaced via a TWI master bus mapped to pins on the J1 I/O expansion header on an Xplained development platform. When the EXT_BOARD value is set to SENSORS_XPLAINED_INERTIAL_1, the following are defined: CONF_SENSOR_BUS_TWI INCLUDE_AK8975 INCLUDE_BMA150 INCLUDE_ITG3200 ATAVRSBIN2 Inertial Sensor Board No. 2 This sensor board includes an InvenSense 3-axis gyro (IMU-3000), Kionix 3-axis accelerometer (KXTF9), and Honeywell 3-axis magnetometer (HMC5883). These sensors are interfaced via a TWI master bus mapped to pins on the J1 I/O expansion header on an Xplained development platform. When the EXT_BOARD value is set to SENSORS_XPLAINED_INERTIAL_2, the following are defined: CONF_SENSOR_BUS_TWI INCLUDE_HMC5883L INCLUDE_IMU3000 INCLUDE_KXTF9 ATAVRSBPR1 Barometric Pressure Sensor Board No. 1 This sensor board includes a Bosch barometric pressure sensor (BMP085). This sensor is interfaced via a TWI master bus mapped to pins on the J1 I/O expansion header on an Xplained development platform. When the EXT_BOARD value is set to SENSORS_XPLAINED_PRESSURE_1, the following are defined: CONF_SENSOR_BUS_TWI INCLUDE_BMP085 ATAVRSBLP1 Ambient Light & IR Proximity Sensor Board No. 1 This sensor board includes an Osram IR light/proximity sensor (SFH7770). This sensor is interfaced via a TWI master bus mapped to pins on the J1 I/O expansion header on an Xplained development platform. When the EXT_BOARD value is set to SENSORS_XPLAINED_LIGHTPROX_1, the following are defined: CONF_SENSOR_BUS_TWI INCLUDE_SFH7770 The following list summarizes available sensor service configuration constants that are specified by board configurations defined in this module.
#define	SENSORS_XPLAINED_BOARD
#define	CONF_SENSOR_BUS_TWI
#define	INCLUDE_AK8975
#define	INCLUDE_BMA150
#define	INCLUDE_ITG3200

Xplained Board J1 Connector Pin Mapping
These constants map AVR & AVR32 ports to pins on the Xplained board J1 connector where pins on the 10-pin header correspond to the following functions: 10-pin Header Function ------------------------------------------- Pin 1 SDA Pin 2 SCL Pin 3 RXD Pin 4 TXD Pin 5 SS Pin 6 MOSI Pin 7 MISO Pin 8 SCK
#define	SENSOR_BOARD_PIN1   XPLD_HEADER_J1_PIN1
#define	SENSOR_BOARD_PIN2   XPLD_HEADER_J1_PIN2
#define	SENSOR_BOARD_PIN3   XPLD_HEADER_J1_PIN3
#define	SENSOR_BOARD_PIN4   XPLD_HEADER_J1_PIN4
#define	SENSOR_BOARD_PIN5   XPLD_HEADER_J1_PIN5
#define	SENSOR_BOARD_PIN6   XPLD_HEADER_J1_PIN6
#define	SENSOR_BOARD_PIN7   XPLD_HEADER_J1_PIN7
#define	SENSOR_BOARD_PIN8   XPLD_HEADER_J1_PIN8

Sensor Device Interrupt Routing
The following constants map I/O expansion header pins that are used as sensor event signal inputs to the MCU interrupt controller lines and IRQ numbers. These definitions are provided as a board-level description for the sensor drivers and are not used directly in sensor service client applications.
#define	INVALID_IRQ_NUMBER   ((unsigned int) -1)
#define	SENSOR_PIN1_IRQ   (INVALID_IRQ_NUMBER)
#define	SENSOR_PIN2_IRQ   (INVALID_IRQ_NUMBER)
#define	SENSOR_PIN3_IRQ   (INVALID_IRQ_NUMBER)
#define	SENSOR_PIN4_IRQ   (INVALID_IRQ_NUMBER)
#define	SENSOR_PIN5_IRQ   (INVALID_IRQ_NUMBER)
#define	SENSOR_PIN6_IRQ   (INVALID_IRQ_NUMBER)
#define	SENSOR_PIN7_IRQ   (INVALID_IRQ_NUMBER)
#define	SENSOR_PIN8_IRQ   (INVALID_IRQ_NUMBER)

Sensor Device I/O Pins
The following constants specify I/O expansion header pins that are used as sensor event signal inputs to the MCU and, in some cases, control signal outputs from the MCU to the sensor device. For example, the BMP085 pressure sensor on the ATAVRSBPR1 board provides a pressure sample End-of-Conversion (EOC) input signal to the MCU and a device "master clear" and reset signal (XCLR) output from the MCU to the sensor. These definitions are provided as a board-level description for the sensor drivers and are not used directly in sensor service client applications.
#define	ak8975_sigint   (SENSOR_BOARD_PIN3)
#define	bma150_sigint   (SENSOR_BOARD_PIN4)
#define	itg3200_sigint   (SENSOR_BOARD_PIN5)
#define	ak8975_sigout   (INVALID_PIN_NUMBER)
#define	bma150_sigout   (INVALID_PIN_NUMBER)
#define	itg3200_sigout   (INVALID_PIN_NUMBER)

Sensor Physical Orientation
The following constants describe the physical orientation of multi-axis sensor devices, relative to the standardized axes of the sensors API. This allows for devices to be mounted in different configurations but provide consistent output to applications in terms of each axis. For each sensor device, the orientation description consists of a set of three values in X, Y, Z order, which specify which sensor axis and sign corresponds to the standard axis positive direction. These definitions are provided as a board-level description for the sensor drivers and are not used directly in sensor service client applications.
#define	NON_DIRECTIONAL_DEV   {AXIS_NONE, AXIS_NONE, AXIS_NONE}
#define	ak8975_orientation   {AXIS_X_NEG, AXIS_Y_POS, AXIS_Z_NEG}
#define	bma150_orientation   {AXIS_X_POS, AXIS_Y_POS, AXIS_Z_POS}
#define	itg3200_orientation   {AXIS_X_POS, AXIS_Y_POS, AXIS_Z_POS}

#define ak8975_orientation   {AXIS_X_NEG, AXIS_Y_POS, AXIS_Z_NEG}

#define ak8975_sigint   (SENSOR_BOARD_PIN3)

#define ak8975_sigout   (INVALID_PIN_NUMBER)

#define bma150_orientation   {AXIS_X_POS, AXIS_Y_POS, AXIS_Z_POS}

#define bma150_sigint   (SENSOR_BOARD_PIN4)

#define bma150_sigout   (INVALID_PIN_NUMBER)

#define CONF_SENSOR_BUS_TWI

#define INCLUDE_AK8975

#define INCLUDE_BMA150

#define INCLUDE_ITG3200

#define INVALID_IRQ_NUMBER   ((unsigned int) -1)

#define itg3200_orientation   {AXIS_X_POS, AXIS_Y_POS, AXIS_Z_POS}

#define itg3200_sigint   (SENSOR_BOARD_PIN5)

#define itg3200_sigout   (INVALID_PIN_NUMBER)

#define NON_DIRECTIONAL_DEV   {AXIS_NONE, AXIS_NONE, AXIS_NONE}

#define SENSOR_BOARD_PIN1   XPLD_HEADER_J1_PIN1

#define SENSOR_BOARD_PIN2   XPLD_HEADER_J1_PIN2

#define SENSOR_BOARD_PIN3   XPLD_HEADER_J1_PIN3

Referenced by sensor_board_init().

#define SENSOR_BOARD_PIN4   XPLD_HEADER_J1_PIN4

Referenced by sensor_board_init().

#define SENSOR_BOARD_PIN5   XPLD_HEADER_J1_PIN5

Referenced by sensor_board_init().

#define SENSOR_BOARD_PIN6   XPLD_HEADER_J1_PIN6

#define SENSOR_BOARD_PIN7   XPLD_HEADER_J1_PIN7

#define SENSOR_BOARD_PIN8   XPLD_HEADER_J1_PIN8

#define SENSOR_PIN1_IRQ   (INVALID_IRQ_NUMBER)

#define SENSOR_PIN2_IRQ   (INVALID_IRQ_NUMBER)

#define SENSOR_PIN3_IRQ   (INVALID_IRQ_NUMBER)

#define SENSOR_PIN4_IRQ   (INVALID_IRQ_NUMBER)

#define SENSOR_PIN5_IRQ   (INVALID_IRQ_NUMBER)

#define SENSOR_PIN6_IRQ   (INVALID_IRQ_NUMBER)

#define SENSOR_PIN7_IRQ   (INVALID_IRQ_NUMBER)

#define SENSOR_PIN8_IRQ   (INVALID_IRQ_NUMBER)

#define SENSORS_XPLAINED_BOARD