3.1 – Web Server: Display Sensor Readings (SSE) My BME280 has SPI pins.

Q&A Forum › 3.1 – Web Server: Display Sensor Readings (SSE) My BME280 has SPI pins.

Keith asked 5 years ago

My BME sensor does not show I2C pins such as SCL or SDA. The one I have looks to work with SPI protocols((SDO, SDI, SCK). I have tested a variety of permutations of wiring between the ESP 32 and the BME. I cant get the BME to say hello. Does this project and the libraries support BME 280 with SPI? I went through the forum. Sorry If i missed the answer, Thanks and Great Course!

Question Tags: BME280 SPI vs I2C

4 Answers

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Sara Santos Staff answered 5 years ago

Hi.
Yes, the libraries support SPI.
Wire the sensor as follows:

SCK: GPIO 18
MISO(SDO): GPIO 19
MOSI (SDI): GPIO 23
CS: GPIO 5

Add this to your code before the setup():

#include <SPI.h>
#define BME_SCK 18
#define BME_MISO 19
#define BME_MOSI 23
#define BME_CS 5

Adafruit_BME280 bme(BME_CS, BME_MOSI, BME_MISO, BME_SCK); // software SPI

Delete this line:

Adafruit_BME280 bme; // I2C

And it should work.
Let me know if it works.
Regards,
Sara

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Keith answered 5 years ago

Thanks Sara. I’ll try it and update the forum. Thanks for the help.

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Keith answered 5 years ago

Sara – Works great. Thanks for the fix. Kind Regards…Keith

0 Vote Up Vote Down

Sara Santos Staff answered 5 years ago

Great!
I’ll mark this issue as resolved.
If you need further help, you just need to open a new question in our forum.
Regards,
Sara