CCS/CC2640R2F: BME280

user5158721

Part Number: CC2640R2F
Other Parts Discussed in Thread: SIMPLICITI

Tool/software: Code Composer Studio

Hello,
I'm working on the BME280. In TI Resurce Explorer, I downloaded the sensor library ( 1url.cz/9tAFe ) and overridden #define Board_TMP_ADDR (0x40) at 0x76 in board.h. But putty releases values from the sensor 0 do not know why. Do not know where could be a mistake? Thank you for your advice.

i2cbme280_CC2640R2_LAUNCHXL_tirtos_ccs.rar

over 7 years ago

0 Matt Calvo over 7 years ago

TI__Genius 14800 points

Hello,

Could you please describe the hardware setup you are using? Are you using an unmodified CC2640R Lauchpad with a Sensors Boosterpack? If so, then the example code located in the Resource Explorer ( dev.ti.com/.../ ) should work without the need for any modifications.

Best regards,

Matt Calvo

0 PrashanthS over 7 years ago

TI__Expert 8765 points

I am assuming are using this booster pack mounted on the launchpad

Please refer to this thread with similar issue

Regards,

Prashanth

0 user5158721 over 7 years ago in reply to PrashanthS

Prodigy 70 points

I use this sensor www.aliexpress.com/.../32665342978.html and change the address as described here https: // e2e. ti.com/support/wireless_connectivity/proprietary_sub_1_ghz_simpliciti/f/156/t/557476 did not help.

0 user5158721 over 7 years ago in reply to user5158721

Prodigy 70 points

I did the i2c measurement, but I'm not quite sure what to follow.

0 Matt Calvo over 7 years ago in reply to user5158721

TI__Genius 14800 points

I have never used that sensor evaluation module so I can't speak for it's reliability but you would need to make sure that the connections to the BME280 chip are the same on your setup as they are in the BOOSTXL-SENSORS Boosterpack. Please refer to the schematic attached below to see the exact connections that I am referring to:

BOOSTXL-SENSORS_Schematic.pdf

If the components and the connections to the chip are the same on your setup as they are in the TI EVM and you have the SDA and SCL lines properly connected to the correct pins on the Launchpad ( DIO5 and DIO4 ) then the example code I referenced in the previous post should operate without any modifications to device addresses or anything like that.

-Matt

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CCS/CC2640R2F: BME280