BQ27530-G1 Unseal/full-access codes

Any update on this?

The default unseal and full-access keys are largely the same on TI gas gauges. The datasheet for the bq27541 pages 20 and 23 indicate the keys and how to use them (I'm not sure if forum moderators would like me directly copy-pasting the key in here). Also, do you have an EV2300 or EV2400, and the GaugeStudio software? Those tools will make development and configuration a lot easier for you.

http://www.ti.com/lit/ds/symlink/bq27541-g1.pdf

Thanks Jason.

  I don't have either of those eval kits...  the issue doesn't seem to be with the communications (I2C)... it seems to be there are too many differences between the suggested TRM and the actual part being used.  There is always the chance I am mis-interpreting the TRM, I suppose.

  Another example would be that when reading subclass 64 (0x40), for 32 bytes and generating a checksum... the checksum isn't matching what the checksum data block says... which isn't suprising, given the subclass(0x40) default values are not matching what's being read out from the device...  the values are close, but not everything is in the exact position as listed in the TRM in question.

i.e.,

Datablock 64 (0x40)

Offset   00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15

00000000 61 67 42 E0 6E 14 14 00 6F 3C 90 14 40 00 00 00