BME688 datasheet(29/60 Pages) BOSCH

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BME688 Datasheet(PDF) 29 Page - Bosch Sensortec GmbH

Part #	BME688

Description	Digital low power gas, pressure, temperature & humidity sensor with AI

PDF	60 Pages

Scroll/Zoom	100%

Manufacturer	BOSCH [Bosch Sensortec GmbH]

Direct Link	https://www.bosch-sensortec.com

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29 / 60 page

Bosch Sensortec | BME688 Datasheet

29 | 60

Modifications reserved |Data subject to change without notice | Printed in Germany

Document number: BST-BME688-DS000-03 Revision_1.3 022024

calc_gas_res = (UINT32_C(10000) * var1) / (uint32_t)var2;

gas_res = calc_gas_res * 100;

where

 gas_adc is the raw gas resistance output data (i.e. ADC value), see 0

 gas_range is the ADC range of the measured gas resistance, see 5.3.5.5

 gas_res is the compensated gas resistance output data in Ohms.

Table 17: Variable names and register addresses for gas_res calculation

Variable name

gas_adc

Field 0 - 0x2D<7:6> / 0x2C

Field 1 - 0x3E<7:6> / 0x3D

Field 2 - 0x4F<7:6> / 0x4E

gas_range

Field 0 - 0x2D<3:0>

Field 1 - 0x3E<3:0>

Field 2 - 0x4F<3:0>

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