UCD3138: Monitor multiple page data on fusion GUI

Jack Tan80

Part Number: UCD3138

Dear UCD friends,

I'd like to use single UCD3138 to control 2 HSFB power supplies, and hope the fusion GUI can be used to monitor those 2 power supplies data.

I see the fusion gui will display page 0 at default, can you please help me know how to change it to disaplay data at other pages? Thanks...

over 5 years ago

0 Yitzhak Bolurian over 5 years ago

TI__Mastermind 18370 points

Hello Jack,

As you know, first you need to make some changes to the firmware, in order to accommodate paging support.

Including the setting of CMD bit mask in order for the GUI to have a way to verify that page command is supported.

If GUI at the first scanning of the power supply realizes that the power supply supports paging, then the combo box that you have highlighted by a red line drawn around it, will be active. Meaning that the arrow at the right side of the combo box will not be grayed out. And will let you to select the desired page.

Hope this makes sense.

Regards,

0 Jack Tan80 over 5 years ago in reply to Yitzhak Bolurian

Mastermind 7130 points

Hi Yizik,

Thanks for supporting here. And hope everything goes well with you.

Can you please help me know what exact command has to be added?

I have viewed the pmbus specification, the page plus write or page plus read command seems can be used in this case, but this is block write or process call protocol, it requries to do some changes to pmbus bottom layer code since current released code didn't support process call. I'm not sure if my understanding is correct. Thanks...

0 Yitzhak Bolurian over 5 years ago in reply to Jack Tan80

TI__Mastermind 18370 points

Hello Jack,

You do not need the page plus command.

Just the standard PAGE command (CMD CODE-00) is good enough.

And of course all the other paged commands need to have parameters for both pages now, for example instead of

pmbus_dcdc_config.vout_uv_fault_limit you need to have an array of two

pmbus_dcdc_config[0].vout_uv_fault_limit and pmbus_dcdc_config[1].vout_uv_fault_limit for both pages.

And as previously mentioned make sure that the CMD bit mask for PAGE CMD is set, so when read command PMBUS_CMD_MFR_CMDS_DCDC_PAGED (0xE4) or read command PMBUS_CMD_MFR_CMDS_DCDC_NONPAGED (0xE5 ) is sent by GUI, GUI will understand that PAGE is supported.

Regards,

0 Jack Tan80 over 5 years ago in reply to Yitzhak Bolurian

Mastermind 7130 points

Hi Yizik,

I've tried it on HSFB code which is downloaded from ti website, and implement the page command and set the CMD bit mask for page command. But it's still can't work, can you please share some comments?

Here are what I've done:

1. enable the page command in pmbus_topology.h

#define PMBUS_CMD_00_ENABLE (1)

2. And related page command code, below code are just for testing purpose, I don't added another pmbus_dcdc_config[1] yet, since I use the same data for 2 pages in current test stage.

Uint8 page_number = 1;
Uint8 pmbus_read_page(void)
{
pmbus_read_one_byte_handler(page_number);
return PMBUS_SUCCESS;
}

Uint8 pmbus_write_page(void)
{
page_number = pmbus_buffer[1];
return PMBUS_SUCCESS;
}

Uint8 pmbus_read_write_page(Uint8 pmbus_read)
{
if(pmbus_read)
return pmbus_read_page();
else
return pmbus_write_page();
}

3. From the fusion GUI, the page still can't be selected, and always point to page 0x00. And you can see that the PAGE comand bit mask has been set. Thanks...