BMP280 datasheet(25/49 Pages) BOSCH

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Bosch Sensortec | BMP280 Data sheet

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Modifications reserved | Data subject to change without notice

Document number: BST-BMP280-DS001-26 Revision_1.26_102021

4.3.3

The “status” register contains two bits which indicate the status of the device.

Table 19: Register 0xF3 “status”

“status”

Name

Description

Bit 3

measuring[0]

Automatically set to ‘1’ whenever a conversion is

running and back to ‘0’ when the results have been

transferred to the data registers.

Bit 0

im_update[0]

Automatically set to ‘1’ when the NVM data are being

copied to image registers and back to ‘0’ when the

copying is done. The data are copied at power-on-

reset and before every conversion.

4.3.4

The “ctrl_meas” register sets the data acquisition options of the device.

Table 20: Register 0xF4 “ctrl_meas”

“ctrl_meas”

Name

Description

Bit 7, 6, 5

osrs_t[2:0]

Controls oversampling of temperature data. See

chapter 3.3.2 for details.

Bit 4, 3, 2

osrs_p[2:0]

Controls oversampling of pressure data. See chapter

3.3.1 for details.

Bit 1, 0

mode[1:0]

Controls the power mode of the device. See chapter

3.6 for details.

Table 21: register settings osrs_p

osrs_p[2:0]

Pressure

oversampling

000

Skipped (output set to

0x80000)

001

oversampling ×1

010

oversampling ×2

011

oversampling ×4

100

oversampling ×8

101, Others

oversampling ×16

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