BQ78350-R1: Programming with srec file

Piotr Wajcowicz

Part Number: BQ78350-R1
Other Parts Discussed in Thread: BQSTUDIO, BQMTESTER, BQ34Z100

Hi,

Im writing external software to program BQ78350-R1 with Microchip MCP2221 module. I have question about srec file generated by bqStudio.

1. I have to program all lines from the file or only those that have data flash addresses?

First line od data flash address is

S328000040008406AE1D96193C6FFEFDFDFF020008000000000000000000000000400000030700B713D3

Last line is:

S31D000047A8FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF0B

If i have to program all lines I dont know what to perform with 24 but addresses?

2. I have to provide data as little endian so address 4000 from the first line has to be changed to 0040. Question is do I also have to change other pairs of values?

For example:

S328000040008406AE1D

0040

0684

1DAE

3. In bqStudio there is checkbox Execute FW after program. I can't find information what commands are sent to execute FW. Can you please provide me an example?

Thanks in advanced

over 7 years ago

0 David Hien over 7 years ago

TI__Genius 10830 points

Hi Piotr,
Thank you for your interest in our products. A BMS expert has been assigned to your question.

Regards,
David

0 Vincenzo Pizzolante over 7 years ago in reply to David Hien

TI__Mastermind 25316 points

hi David,

any news?

thanks a lot in advance
KR
Vincenzo

0 Batt over 7 years ago in reply to Vincenzo Pizzolante

TI__Mastermind 42535 points

Hi Piotr,

Please follow www.ti.com/.../slua742.pdf. We only allow programming fw via bqstudio or bqmtester for production.

0 Piotr Wajcowicz over 7 years ago in reply to Batt

Prodigy 40 points

Hi,

So there is no chance to program bq78350-r1 with external device? Its technicaly impossible or you don't provide support for MCP2221?

With MCP2221 I am able to program bq34z100 with bq.fs file.

0 Batt over 7 years ago in reply to Piotr Wajcowicz

TI__Mastermind 42535 points

Hi Piotr,

Sorry, we just don't support it. You can technically sniff the bus while programming it with bqstudio and try to decipher the procedure. If you don't need to program fw, you can easily change df parameters in hex using writes by direct addressing of df blocks.

0 Piotr Wajcowicz over 7 years ago in reply to Batt

Prodigy 40 points

Hi Batt,

Ok so with MCP2221 I can only change Data Flash section. So this is answer for my first and third question.

What about second question? Can you help me how to properly handle srec file?

0 Batt over 7 years ago in reply to Piotr Wajcowicz

TI__Mastermind 42535 points

Hi Piotr,

yes, you will have to flip the bits when you write them.

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BQ78350-R1: Programming with srec file