bmp280 datasheet

Bosch
Sensortec | BMP280 Data sheet
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Modifications reserved | Data subject to change without notice
Document number: BST-BMP280-DS001-23 Revision_1.23_11202
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4.3.3 Register 0xF3 “status”
The “status” register contains two bits which indicate the status of the device.
Table 19: Register 0xF3 “status”
Register 0xF3
“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 Register 0xF4 “ctrl_meas”
The “ctrl_meas” register sets the data acquisition options of the device.
Table 20: Register 0xF4 “ctrl_meas”
Register 0xF4
“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