MMCSD sample program in BSL fails when optimized (-o flag)

Abebe Hailu

Other Parts Discussed in Thread: OMAP-L138

Hi,

I'm using a program based on the BSL sample program for MMCSD (together with a fat file system) on my C6748 (OMAP-L138) which works fine... when I'm in debug mode without optimization. As soon as I enable the optimization, setting the -o flag, I encounter problems when reading an writing to my SD card. At optimization 0 and 1 the program gets stuck in one of the while loops in the sample program. When 2 and 3 are used it simply goes through the program without writing anything to the card. And when the optimization is disabled the problem disappears.

My questions are:
What does the optimization do?
How does fifo act when the code is optimized?
Do I need to put in an extra delay somewhere?
How can I solve this problem?

Best regards,
Abebe Hailu

over 12 years ago

0 Shankari G over 12 years ago

TI__Mastermind 43955 points

Hi Adebe,

Please let us know which version of BSL you use for this experiment.

Regards,

Shankari.

0 Abebe Hailu over 12 years ago in reply to Shankari G

Intellectual 435 points

Hi,

According to the folder name I'm using version 2.3.

Regards,
Abebe

0 Abebe Hailu over 12 years ago in reply to Abebe Hailu

Intellectual 435 points

Any input on this ?

Regards,
Abebe

0 Iyshwarya Gopalakrishnan over 12 years ago in reply to Abebe Hailu

TI__Intellectual 1585 points

Hi Abebe,

The error you are facing seems to be an error during CCS optimization and doesn’t look to be a problem with the device or BSL code.

Take a look at the following thread which addresses the same issue.

http://e2e.ti.com/support/development_tools/code_composer_studio/f/81/t/94443.aspx

Regards,

Iyshwarya

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0 Abebe Hailu over 12 years ago in reply to Iyshwarya Gopalakrishnan

Intellectual 435 points

Hi,

Have you tried it as well? Do I need to set any variables to volatile like they did in the thread you linked? What do you mean when you say that it doesn't look like there is a problem with the device or BSL code?

Regards,
Abebe

0 Abebe Hailu over 12 years ago in reply to Abebe Hailu

Intellectual 435 points

The problem was in the BSL code.Adding a delay in the block writing function solved the problem.

/Abebe

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MMCSD sample program in BSL fails when optimized (-o flag)