bme280

const (
	CAL_T1_LSB_REG = 0x88
	CAL_T1_MSB_REG = 0x89
	CAL_T2_LSB_REG = 0x8A
	CAL_T2_MSB_REG = 0x8B
	CAL_T3_LSB_REG = 0x8C
	CAL_T3_MSB_REG = 0x8D

	CAL_P1_LSB_REG = 0x8E
	CAL_P1_MSB_REG = 0x8F
	CAL_P2_LSB_REG = 0x90
	CAL_P2_MSB_REG = 0x91
	CAL_P3_LSB_REG = 0x92
	CAL_P3_MSB_REG = 0x93
	CAL_P4_LSB_REG = 0x94
	CAL_P4_MSB_REG = 0x95
	CAL_P5_LSB_REG = 0x96
	CAL_P5_MSB_REG = 0x97
	CAL_P6_LSB_REG = 0x98
	CAL_P6_MSB_REG = 0x99
	CAL_P7_LSB_REG = 0x9A
	CAL_P7_MSB_REG = 0x9B
	CAL_P8_LSB_REG = 0x9C
	CAL_P8_MSB_REG = 0x9D
	CAL_P9_LSB_REG = 0x9E
	CAL_P9_MSB_REG = 0x9F

	CAL_H1_REG     = 0xA1
	CAL_H2_LSB_REG = 0xE1
	CAL_H2_MSB_REG = 0xE2
	CAL_H3_REG     = 0xE3
	CAL_H4_MSB_REG = 0xE4
	CAL_H4_LSB_REG = 0xE5
	CAL_H5_MSB_REG = 0xE6
	CAL_H6_REG     = 0xE7

	MEASUREMENT_START_REG = 0xF7
	PRESSURE_MSB_IDX      = 0
	PRESSURE_LSB_IDX      = 1
	PRESSURE_XLSB_IDX     = 2

	TMP_MSB_IDX  = 3
	TMP_LSB_IDX  = 4
	TMP_XLSB_IDX = 5

	HUMIDITY_MSB_IDX = 6
	HUMIDITY_LSB_IDX = 7

	CTRL_MEAS_REG     = 0xF4
	CONFIG_REG        = 0xF5
	CTRL_HUMIDITY_REG = 0xF2
	RESET_REG         = 0xE0

	//RunMode can be:
	//  0, Sleep mode
	//  1 or 2, Forced mode
	//  3, Normal mode
	RunMode = uint8(3)

	//Standby can be:
	//  0, 0.5ms
	//  1, 62.5ms
	//  2, 125ms
	//  3, 250ms
	//  4, 500ms
	//  5, 1000ms
	//  6, 10ms
	//  7, 20ms
	Standby = uint8(0)

	//Filter can be off or number of FIR coefficients to use:
	//  0, filter off
	//  1, coefficients = 2
	//  2, coefficients = 4
	//  3, coefficients = 8
	//  4, coefficients = 16
	Filter = uint8(0)

	//TempOverSample can be:
	//  0, skipped
	//  1 through 5, oversampling *1, *2, *4, *8, *16 respectivel
	TempOverSample = uint8(1)

	//PressOverSample can be:
	//  0, skipped
	//  1 through 5, oversampling *1, *2, *4, *8, *16 respectively
	PressOverSample = uint8(1)

	//HumidOverSample can be:
	//  0, skipped
	//  1 through 5, oversampling *1, *2, *4, *8, *16 respectively
	HumidOverSample = uint8(1)
)