Other Parts Discussed in Thread: BQSTUDIO, EV2400
Hello,
I am trying to flash a bq-studio generated flashsteam file (bq.fs) for a BQ13500. I was able to parse the file and send i2c data to the fuel gauge device accordingly, but the procedure stops here. After that, if I try to power cycle and start the procedure from the beginning, the procedure fails here. I could recover the device using bq-studio, but I can't understand what the software did to unbrick the chip.
I would like to ask the following questions:
- What is the cause of the brick?
- What is bq-studio doing to unbrick the device?
- How can I flash the firmware correctly? Would adding additional delay as mentioned here help?
;--------------------------------------------------------
;Unseal device
;--------------------------------------------------------
W: AA 00 14 04
W: AA 00 72 36
W: AA 00 FF FF
W: AA 00 FF FF
X: 1000
;--------------------------------------------------------
;Go To ROM Mode
;--------------------------------------------------------
W: AA 00 00 0F
X: 1000
;--------------------------------------------------------
;Data Block
;--------------------------------------------------------
W: 16 00 04 00 00 00 83 DE
W: 16 64 65 01
X: 400
C: 16 66 00
W: 16 00 02 00 00 00 E2 FF 33 03 D7 33 BB D6 33 E0 D6 33 09 D6 33 FF FF 3F 00 01 00 FF FF 3F FF FF 3F FF FF 3F FF FF 3F FF FF 3F FF FF 3F FF FF 3F FF FF 3F FF FF 3F FF FF 3F FF FF 3F 03 01 3D 00 01 3D 02 01 3D 0A 00 3D 0A 00 3D 80 03 3D 00 00 3D 00 00 3D 35 80 3D 11 02 3D 49 00 3D 20 2A 0E DF FA 0E E2 FF 32
W: 16 64 60 2B
X: 2
...
