BME688 Dev kit not working

[Grayson]

Hi,

i am trying to use BME688 DEV kit, after combine the kit with huzzah32. I plug in the power and the red LED on the board flash 5 times and pause for 1 second. Do you know what does that mean? And the SD card has no data stored.

1. do I have to put in the re1220 coin in the board?

2.do i have to use the exact type of SD card? now am using gigastone 4k camera pro.

thank you,

Grayson

[BSTRobin]

Hi Grayson,

1.You don't need to install batteries;
2. BME688 dev kit has no special requirements for SD cards, just use a universal SD card.

Did you refer BME688 dev kit setup guide and finish the setup? https://www.bosch-sensortec.com/media/boschsensortec/downloads/product_flyer/bst-bme688-fl001.pdf

[tolip_ydob]

I had the same problem you did. My brand new June 2023 bme68x dev kit had 'something' blinking the red LED at 1 Hz but nothing was saved to the SD card. I also suspected the SD card. I tried reflashing the source code onto the Adafruit ESP32 Feather with Arduino IDE. That is a bust with the latest and greatest libraries. It 'compiles' but fails at the linking(LD) stage of the process. Not enough RAM by a few thousand bytes. 

I sucessfully flashed bme688_dev_kit to the Feather. This verified the SD works. Data was being saved in .csv format. Better but not correct.

Next I tried flashing the bin files contained inside "bme688_development_kit_software_v2-0-9.zip"

This was a _not_fun_ experience. The Flash.bat file is a nasty cut and paste error!!! It starts with windoze backslashes and ends with *nix slashes in the filenames.

The Flash.bat file may work in win if you replace the slashes in the path/file/names with windows\path\backslashes.

I ended up running the python3 code from the command line with fixed pathnames and variables from the .bat file. I am now a happy camper and the bme688 is recording jsondata in a file on the SD card (as they said it would out of the box).

My Linux python3 command line is below

-----------------------------------------------------------------------------------

python3 esptool.py \
--chip esp32 \
--port /dev/ttyUSB0 \
--baud 921600 \
--before default_reset \
--after hard_reset write_flash \
-z \
--flash_mode dio \
--flash_freq 80m \
--flash_size detect \
0xe000 esp32/2.0.3/tools/partitions/boot_app0.bin \
0x1000  esp32/2.0.3/tools/sdk/esp32/bin/bootloader_dio_80m.bin \
0x10000 bme68x_demo_sample.ino.bin \
0x8000 bme68x_demo_sample.ino.partitions.bin \

--------------------------------------------------------------------------------

[SterlingMinsha]

会不会是功率适应问题？

[BSTRobin]

Hi all,

1. Ensure the use of official hardware;
2. If using the latest software, please record detailed failure records, such as viewing the printed information of the COM interface and screenshots of the SD card content.