Other Parts Discussed in Thread: BQSTUDIO, , EV2400
Dear experts,
I am faced with a very concerning issue about backward compatibility of golden image files generated by the bqstudio software.
I used to generated bq.fs files with an EV2300 and bqstudio V1.3.54. This filestream was then compiled to our microcontroller application and parsed to program the BQ34Z100-G1 gauge through i2C. We have developed our own parser which worked perfectly for several years and a dozen of golden image files.
We recently moved to an EV2400 and bqstudio V1.3.86 for improved performances and access to new chemIDs. However when we try to program a bq.fs stream to the gauge through our host MCU the gauge is systematically bricked without any idea of what happened. Our observations are still preliminary but we have managed to backport a gg.csv file from bqstudio V1.3.86 to bqstudio V1.3.54, this allowed us to generate a working bq.fs golden image from our older EV2300. The issue thus seems to be linked with the modifications introduced with newer versions of bqstudio. We have noticed some modification in the structure of the gg.csv files, and a warning that "the target bqz container is old and must be updated". However our parser should still be able to interpret correctly the bq.fs stream.
You will find below the two golden images generated and the associated gg.csv files:
Problematic (and dangerous) golden image which bricks any gauge it is loaded to (generated with EV2400 and bqstudio V1.3.86):
3264.unusable_12.8V_33.5Ah_GI_learned.gg.csv
unusable_12.8V_33.5Ah_GI-bq34z100G1.zip
Working golden image generated with EV2300 and bqstudio V1.3.54:
working_12.8V_33.5Ah_retrofitted_GI_learned.gg.csv
working_12.8V_33.5Ah_retrofitted_GI-bq34z100G1.zip
I hope you will be able to resolve this issue by comparing these documents.
Thank you for your help with this issue, we look eagerly forward to your insights in order to update serenely your tools. From now on we are trapped with an EV2300 and bqstudio V1.3.54 working on windows 7, we won't be able to continue this way for long.
Best regards,
Jérémie
