2008-07-22 10:23:47     [PPI problem] No signals output

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2008-07-22 10:23:47     [PPI problem] No signals output

Axel Normand (FRANCE)

Message: 59226   

 

Hello,

 

I have make my own blackfin card based on BF533_STAMP.

 

uClinux run well on it. I can used ethernet link and use my program. But, my screen driver dont run on it !

 

 

 

My LCD driver run on bf533_stamp. On my board, I juste see good timer for V sync and H sync, but I can't see any data on the PPI. Some bits are at 0 and other at 1.

 

 

 

I think my PPI Clk is good because I have the différente timer.

 

 

 

The diference betwen the 2 card is the revision of Blackfin 0.5 for mine and 0.3 for stamp and I used a tqfp package.

 

 

 

My driver do it's initialisation well and dont detect any problem on PPI.

 

 

 

If, anyone have an idea where the error come from.

 

 

 

regard's Axel

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2008-07-22 10:37:32     Re: [PPI problem] No signals output

Andras Szemzo (HUNGARY)

Message: 59228   

 

hi,

 

we run into this problem with BF532 0.4 and 0.5 rev.

 

On 0.5 rev, make sure your FS3 pin is connected to GND. Check the latest processor anomaly datasheet.

 

I hope this helps.

 

 

 

Regards,

 

Andras

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2008-07-22 11:06:20     Re: [PPI problem] No signals output

Axel Normand (FRANCE)

Message: 59232   

 

Hi,

 

I connect FS3 to GND, it's run. Thank's.

 

I've not think to check the anomaly datasheet

 

 

 

Regards,

 

Axel

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