VC5505 and C5505(CH12): randomly gives bus errors

microt

We could see the program counter pointing to the location 0XFE0004 when it hangs and this location belongs to internal ROM. We could see BERRINT flag set in IFR1 register when ever it hangs. This is Bus Error interrupt caused by system bus error.

And because we have configured the watchdog. The system resets and comes back to normal.

Does any body have the same issue.

over 15 years ago

0 Steve Tsang over 15 years ago

TI__Mastermind 23785 points

Under what condition do you see this?

0 microt over 15 years ago in reply to Steve Tsang

Intellectual 310 points

The set up is using a USB stick 5505.

And the code is running voice compression on data coming from the CODEC connected on the I2S port

There is no sleep implemented.

The error happens even in idle when the DSP is just sitting there waiting for DSP commands.

But at the same time the CODEC data is coming in on the I2S port and is being discarded.

In what case can a bus error happen? Can the code do anything that can make it happen?

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VC5505 and C5505(CH12): randomly gives bus errors