HPI Bootloader issue on DSPC54x

Delared Delared

Expert 1945 points

Hi,

I designed a board in which I have a DSP C5402 connected to MSP430 MCU. After start-up, the MSP430 load the DSP FW sections to DSP Memory through HPI.

The interface have been working well. however, in some boards I got the issue that DSP is not performing bootloader correctly.

some useful details:

- Hardware: HINT is tied to INT2, MP/MC pin connected to VSS.

- I tested the HPI read/write transactions >> It works fine.

- I'm able to run code on DSP through JTAG Link XDS.

- both FW sections and Entry point are written to DSP correctly, However The DSP is not running FW.

My questions.

Is there any other thing That I should verify?

I need your help so I can debug if there is HW or SW issue on the boards showing the issue.

Thanks.

over 9 years ago

0 Lalindra Jayatilleke over 9 years ago

TI__Mastermind 30365 points

Delared,

Tough one to debug considering its a problem isolated to a some boards in your batch. Have you verified the HW assembly of the boards in question?

According to http://www.ti.com/lit/an/spra382/spra382.pdf

"The bootloader checks to see if the interrupt two (INT2) flag in the Interrupt Flag Register (IFR) is set to one (active). If the INT 2 pin is active, then HPI mode is selected. The bootloader also clears location 0x007F and uses it as a software flag to show that the HPI boot is completed. HPI boot mode can also be selected without using INT2 by completing the code-transfer process and writing location 0x007F to signal that the boot is completed."

Is INT2 getting a valid signal?

Lali

0 Delared Delared over 9 years ago in reply to Lalindra Jayatilleke

Expert 1945 points

Hi Lali,
I found the issue: it's was a bad DSP assembly on HINT pin.
Thanks :-)

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HPI Bootloader issue on DSPC54x