TPS25751EVM: 4CC Not Enable ADC_EN and I2Cm_SCL Stay Low

Hello Myron, 

With respect to I2Cw and I2Cr 4CC command can you let me know on which i2c line these messages are being sent. Would that be i2C-Controller line or the I2C-Target line. 

Regards,
Deepak 

Hi Deepak,

I'm sending my 4CC commands on I2C-Controller lines which is TPS25751 I2C master lines.

Best regards.

Hello Myron, 

Thanks for the info, we will look into this and get back to you ASAP. 

Regards,
Deepak 

Hi Deepak,

Thanks for assistance. I'm waiting your response.

Best regards.

Hi Myron,

Deepak transferred the E2E ticket to me for testing. Please give us some time to replicate the issue in lab.

1. Does the I2C traffic when you use I2Cw look similar to the I2C traffic when programming it directly?

2. Can you share the .json file and .bin files you used with the GUI?

Thanks and Regards,

Chris

Hi Christopher,

1) You can see the lines when I use 4CC I2Cw command for enable ADC_EN:

*Yellow is data line and blue is clock line.

and you can see the lines when I directly send ADC_EN = 1 to BQ25798:

*Yellow is data line and blue is clock line.

2) You can find my bin file below:

tps25751.rar

I cannot reach the web gui, its give me "Sorry! We couldn't find your page." error so I cannot give you json configuration.

Best regards.

How are you attempting to reach the GUI? 

I just tested and it looks like the datasheet is not working, we are getting that checked with the team. There is another link in the EVM user guide document that should be working.

Thanks and Regards,

Chris

Hi Christopher,

You can reach my json settings below:

{
  "questionnaire": {
    "device": "TPS25751",
    "answers": [
      null,
      0,
      4,
      4,
      1,
      0,
      3,
      0,
      1,
      1,
      1,
      0,
      0,
      0,
      8.4,
      1.5,
      0.4,
      0.4
    ],
    "vendorId": "0000",
    "productId": "0000",
    "version": "1.0.0.2"
  }
}

also anyone who cannot reach TPS25751 web gui like me can reach the web gui link with this link:

https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1311438/tps25751evm-web-gui-is-not-working-properly

Best regards.

Thanks Myron,

I'll review your .json file.

Thanks and Regards,

Chris

Hi Christopher,

Is there any update?

Best regards.

Hi Myron, 

I took a look at the .JSON and did not see anything obvious.

I am looking into obtaining a BQ25798EVM to do further testing but am having issues acquiring one.

I will keep you updated.

Thanks and Regards,

Chris

Hi Christopher,

Thank you for your assistance. I'm waiting your response.

Best regards.

Thanks Myron,

I will update you when we receive the EVM for testing.

Thanks and Regards,

Chris

Hi Myron,

Thanks for your patience, I have just received the BQ25798EVM and will test it this week.

Just to re-align, you are having issues using the I2Cw and I2Cr commands.

Thanks and Regards,

Chris

Hi Christopher,

Thank you for your assistance and effort.

Best regards.

No problem, I will update you when I get some test data.

Thanks and Regards,

Chris

Hi Christopher,

Is there any updates?

Best regards.

HI Myron,

Apologies, no updates yet. I'll get you some test data by the end of the week.

Thanks and Regards,

Chris