BQ27542-G1: Fuel Gauge Stuck in the ROM Mode

Mahek Delawala

Part Number: BQ27542-G1
Other Parts Discussed in Thread: BQ28Z610, BQSTUDIO

Hi Team,

We are using bq27542-g1 fuel gauge. We are writing the code for flashing golden image. We were using sample dfss file of bq277421-g1 for testing purpose. While flashing the image, we found that after switching to ROM mode, our device got stuck in the ROM Mode and is not able to exit from it.

We also tried the steps given in the below link
http://e2e.ti.com/support/power-management/f/196/t/731918?BQ28Z610-How-to-exit-the-ROM-mode-

But still we are not able to exit from it. We are stucked here and not able to do anything, Can you please help here as it is very urgent ?

I am also attaching the sample Golden Zip which we used for testing.5125.Golden_Image.zip

Regards,

Mahek

over 5 years ago

0 Kang Kang over 5 years ago

TI__Mastermind 24870 points

Hello Mahek,

Please send 0x0f 0x00 to 0x00. The bq28z610 does not use the same command as the other one.

bqStudio also documents this command in the bq.fs files using the golden image plug-in.

0 Mahek Delawala over 5 years ago in reply to Kang Kang

Prodigy 120 points

Hi Kang,

Thanks for the reply.

We are using bq27542 fuel gauge not bq28z610. Will this commands work on that ? You are asking me to right 0x0f at 0x00 and 0x00 at 0x01. Correct me if i am wrong ?

Regards,

Mahek

0 Kang Kang over 5 years ago in reply to Mahek Delawala

TI__Mastermind 24870 points

Hello Mahek,

Yes, that is correct. You can also swap the endian and see if it works.

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BQ27542-G1: Fuel Gauge Stuck in the ROM Mode