Register addresses and constants for the different sensors and actuators of the HAT. More...

VEML6030
Light sensor address, and registers
#define	VEML6030_I2C_ADDR 0x10
#define	VEML6030_CONFIG_REG 0x00
#define	VEML6030_ALS_REG 0x04

HDC2021
Humidity sensor address, registers and interruptions thresholds
#define	HDC2021_I2C_ADDRESS 0x40
#define	HDC2021_TEMP_LOW 0x00
#define	HDC2021_TEMP_HIGH 0x01
#define	HDC2021_HUMIDITY_LOW 0x02
#define	HDC2021_HUMIDITY_HIGH 0x03
#define	HDC2021_CONFIG 0x0E
#define	HDC2021_MEASUREMENT_CONFIG 0x0F
#define	HDC2021_TEMP_THR_L 0x13
#define	HDC2021_TEMP_THR_H 0x14
#define	HDC2021_HUMID_THR_L 0x15
#define	HDC2021_HUMID_THR_H 0x16

Display
SSD1306 display address
#define	SSD1306_I2C_ADDRESS 0x3C

Microphone
Microphone's sampling rate and buffer size.
#define	MEMS_SAMPLING_FREQUENCY 8000
#define	MEMS_BUFFER_SIZE 256

I2C addressing
I2C address and identity registers.
#define	ICM42670_I2C_ADDRESS 0x69
#define	ICM42670_I2C_ADDRESS_ALT 0x69
#define	ICM42670_REG_WHO_AM_I 0x75
#define	ICM42670_WHO_AM_I_RESPONSE 0x67

Interrupts
Interrupt configuration registers and defaults.
#define	ICM42670_INT_CONFIG 0x06
#define	ICM42670_INT1_CONFIG_VALUE 0x02

Transfer limits
Helper limits for SDK buffer handling.
#define	ICM42670_MAX_READ_LENGTH 256
#define	ICM42670_MAX_WRITE_LENGTH 256

Configuration registers
Top-level configuration register addresses.
#define	ICM42670_ACCEL_CONFIG0_REG 0x21
#define	ICM42670_GYRO_CONFIG0_REG 0x20
#define	ICM42670_PWR_MGMT0_REG 0x1F
#define	ICM42670_REG_SIGNAL_PATH_RESET 0x02
#define	ICM42670_RESET_CONFIG_BITS 0x10

Accelerometer FSR encodings
ACCEL_CONFIG0[7:5]. Full-scale range selection.
#define	ICM42670_ACCEL_FSR_2G 0x03
#define	ICM42670_ACCEL_FSR_4G 0x02
#define	ICM42670_ACCEL_FSR_8G 0x01
#define	ICM42670_ACCEL_FSR_16G 0x00
#define	ICM42670_ACCEL_FSR_DEFAULT 4

Gyroscope FSR encodings
GYRO_CONFIG0[7:5]. Full-scale range selection.
#define	ICM42670_GYRO_FSR_250DPS 0x03
#define	ICM42670_GYRO_FSR_500DPS 0x02
#define	ICM42670_GYRO_FSR_1000DPS 0x01
#define	ICM42670_GYRO_FSR_2000DPS 0x00
#define	ICM42670_GYRO_FSR_DEFAULT 250

Accelerometer ODR encodings (LN mode)
ACCEL_CONFIG0[3:0]. Output Data Rate selection in Low-Noise mode.
#define	ICM42670_ACCEL_ODR_25HZ 0x0B
#define	ICM42670_ACCEL_ODR_50HZ 0x0A
#define	ICM42670_ACCEL_ODR_100HZ 0x09
#define	ICM42670_ACCEL_ODR_200HZ 0x08
#define	ICM42670_ACCEL_ODR_400HZ 0x07
#define	ICM42670_ACCEL_ODR_800HZ 0x06
#define	ICM42670_ACCEL_ODR_1600HZ 0x05
#define	ICM42670_ACCEL_ODR_DEFAULT 100

Gyroscope ODR encodings
GYRO_CONFIG0[3:0]. Output Data Rate selection.
#define	ICM42670_GYRO_ODR_25HZ 0x0B
#define	ICM42670_GYRO_ODR_50HZ 0x0A
#define	ICM42670_GYRO_ODR_100HZ 0x09
#define	ICM42670_GYRO_ODR_200HZ 0x08
#define	ICM42670_GYRO_ODR_400HZ 0x07
#define	ICM42670_GYRO_ODR_800HZ 0x06
#define	ICM42670_GYRO_ODR_1600HZ 0x05
#define	ICM42670_GYRO_ODR_DEFAULT 100

Power / mode bits
Encodings for PWR_MGMT0 sensor-mode fields.
#define	ICM42670_ACCEL_MODE_LN 0x03
#define	ICM42670_GYRO_MODE_LN 0x0C

Sensor data window
Starting register for burst reads of temp/accel/gyro data.
#define	ICM42670_SENSOR_DATA_START_REG 0x09

Detailed Description

Register addresses and constants for the different sensors and actuators of the HAT.

Macro Definition Documentation

◆ HDC2021_CONFIG

#define HDC2021_CONFIG 0x0E

Configuration register.

◆ HDC2021_HUMID_THR_H

#define HDC2021_HUMID_THR_H 0x16

High humidity threshold.

◆ HDC2021_HUMID_THR_L

#define HDC2021_HUMID_THR_L 0x15

Low humidity threshold.

◆ HDC2021_HUMIDITY_HIGH

#define HDC2021_HUMIDITY_HIGH 0x03

Humidity high byte register.

◆ HDC2021_HUMIDITY_LOW

#define HDC2021_HUMIDITY_LOW 0x02

Humidity low byte register.

◆ HDC2021_I2C_ADDRESS

#define HDC2021_I2C_ADDRESS 0x40

I2C address of the HDC2021 sensor.

◆ HDC2021_MEASUREMENT_CONFIG

#define HDC2021_MEASUREMENT_CONFIG 0x0F

Measurement configuration register.

◆ HDC2021_TEMP_HIGH

#define HDC2021_TEMP_HIGH 0x01

Temperature high byte register.

◆ HDC2021_TEMP_LOW

#define HDC2021_TEMP_LOW 0x00

Temperature low byte register.

◆ HDC2021_TEMP_THR_H

#define HDC2021_TEMP_THR_H 0x14

High temperature threshold.

◆ HDC2021_TEMP_THR_L

#define HDC2021_TEMP_THR_L 0x13

Low temperature threshold.

◆ ICM42670_ACCEL_CONFIG0_REG

#define ICM42670_ACCEL_CONFIG0_REG 0x21

Accelerometer ODR/FSR (see bit fields below).

◆ ICM42670_ACCEL_FSR_16G

#define ICM42670_ACCEL_FSR_16G 0x00

±16 g.

◆ ICM42670_ACCEL_FSR_2G

#define ICM42670_ACCEL_FSR_2G 0x03

±2 g.

◆ ICM42670_ACCEL_FSR_4G

#define ICM42670_ACCEL_FSR_4G 0x02

±4 g.

◆ ICM42670_ACCEL_FSR_8G

#define ICM42670_ACCEL_FSR_8G 0x01

±8 g.

◆ ICM42670_ACCEL_FSR_DEFAULT

#define ICM42670_ACCEL_FSR_DEFAULT 4

SDK default FSR in g (±4 g).

◆ ICM42670_ACCEL_MODE_LN

#define ICM42670_ACCEL_MODE_LN 0x03

Accel Low-Noise mode code for PWR_MGMT0 accel field.

◆ ICM42670_ACCEL_ODR_100HZ

#define ICM42670_ACCEL_ODR_100HZ 0x09

100 Hz.

◆ ICM42670_ACCEL_ODR_1600HZ

#define ICM42670_ACCEL_ODR_1600HZ 0x05

1600 Hz.

◆ ICM42670_ACCEL_ODR_200HZ

#define ICM42670_ACCEL_ODR_200HZ 0x08

200 Hz.

◆ ICM42670_ACCEL_ODR_25HZ

#define ICM42670_ACCEL_ODR_25HZ 0x0B

25 Hz.

◆ ICM42670_ACCEL_ODR_400HZ

#define ICM42670_ACCEL_ODR_400HZ 0x07

400 Hz.

◆ ICM42670_ACCEL_ODR_50HZ

#define ICM42670_ACCEL_ODR_50HZ 0x0A

50 Hz.

◆ ICM42670_ACCEL_ODR_800HZ

#define ICM42670_ACCEL_ODR_800HZ 0x06

800 Hz.

◆ ICM42670_ACCEL_ODR_DEFAULT

#define ICM42670_ACCEL_ODR_DEFAULT 100

SDK default ODR in Hz (100 Hz).

◆ ICM42670_GYRO_CONFIG0_REG

#define ICM42670_GYRO_CONFIG0_REG 0x20

Gyroscope ODR/FSR (see bit fields below).

◆ ICM42670_GYRO_FSR_1000DPS

#define ICM42670_GYRO_FSR_1000DPS 0x01

±1000 dps.

◆ ICM42670_GYRO_FSR_2000DPS

#define ICM42670_GYRO_FSR_2000DPS 0x00

±2000 dps.

◆ ICM42670_GYRO_FSR_250DPS

#define ICM42670_GYRO_FSR_250DPS 0x03

±250 dps.

◆ ICM42670_GYRO_FSR_500DPS

#define ICM42670_GYRO_FSR_500DPS 0x02

±500 dps.

◆ ICM42670_GYRO_FSR_DEFAULT

#define ICM42670_GYRO_FSR_DEFAULT 250

SDK default FSR in dps (±250 dps).

◆ ICM42670_GYRO_MODE_LN

#define ICM42670_GYRO_MODE_LN 0x0C

Gyro Low-Noise mode code for PWR_MGMT0 gyro field.

◆ ICM42670_GYRO_ODR_100HZ

#define ICM42670_GYRO_ODR_100HZ 0x09

100 Hz.

◆ ICM42670_GYRO_ODR_1600HZ

#define ICM42670_GYRO_ODR_1600HZ 0x05

1600 Hz.

◆ ICM42670_GYRO_ODR_200HZ

#define ICM42670_GYRO_ODR_200HZ 0x08

200 Hz.

◆ ICM42670_GYRO_ODR_25HZ

#define ICM42670_GYRO_ODR_25HZ 0x0B

25 Hz.

◆ ICM42670_GYRO_ODR_400HZ

#define ICM42670_GYRO_ODR_400HZ 0x07

400 Hz.

◆ ICM42670_GYRO_ODR_50HZ

#define ICM42670_GYRO_ODR_50HZ 0x0A

50 Hz.

◆ ICM42670_GYRO_ODR_800HZ

#define ICM42670_GYRO_ODR_800HZ 0x06

800 Hz.

◆ ICM42670_GYRO_ODR_DEFAULT

#define ICM42670_GYRO_ODR_DEFAULT 100

SDK default ODR in Hz (100 Hz).

◆ ICM42670_I2C_ADDRESS

#define ICM42670_I2C_ADDRESS 0x69

Default I2C address (AD0 pulled).

◆ ICM42670_I2C_ADDRESS_ALT

#define ICM42670_I2C_ADDRESS_ALT 0x69

Alternate I2C address (autodetect helper uses both).

◆ ICM42670_INT1_CONFIG_VALUE

#define ICM42670_INT1_CONFIG_VALUE 0x02

Default INT1 config: active-low, pulsed (course default).

◆ ICM42670_INT_CONFIG

#define ICM42670_INT_CONFIG 0x06

INT1/INT2 routing/config register.

◆ ICM42670_MAX_READ_LENGTH

#define ICM42670_MAX_READ_LENGTH 256

Max contiguous read length used by the SDK.

◆ ICM42670_MAX_WRITE_LENGTH

#define ICM42670_MAX_WRITE_LENGTH 256

Max contiguous write length used by the SDK.

◆ ICM42670_PWR_MGMT0_REG

#define ICM42670_PWR_MGMT0_REG 0x1F

Power state / sensor mode control.

◆ ICM42670_REG_SIGNAL_PATH_RESET

#define ICM42670_REG_SIGNAL_PATH_RESET 0x02

Signal path reset register.

◆ ICM42670_REG_WHO_AM_I

#define ICM42670_REG_WHO_AM_I 0x75

WHO_AM_I register address.

◆ ICM42670_RESET_CONFIG_BITS

#define ICM42670_RESET_CONFIG_BITS 0x10

Value used for soft reset sequence.

◆ ICM42670_SENSOR_DATA_START_REG

#define ICM42670_SENSOR_DATA_START_REG 0x09

First data register for TEMP/ACCEL/GYRO burst read.

◆ ICM42670_WHO_AM_I_RESPONSE

#define ICM42670_WHO_AM_I_RESPONSE 0x67

Expected WHO_AM_I value.

◆ MEMS_BUFFER_SIZE

#define MEMS_BUFFER_SIZE 256

Number of samples in each microphone buffer.

◆ MEMS_SAMPLING_FREQUENCY

#define MEMS_SAMPLING_FREQUENCY 8000

Sampling frequency in Hz for PDM microphone.

◆ SSD1306_I2C_ADDRESS

#define SSD1306_I2C_ADDRESS 0x3C

I2C address of the SSD1306 OLED display.

◆ VEML6030_ALS_REG

#define VEML6030_ALS_REG 0x04

Ambient Light Sensing (ALS) data register.

◆ VEML6030_CONFIG_REG

#define VEML6030_CONFIG_REG 0x00