gpio example for beaglebone compiled with gcc

Valentin Ivanov

I am using gcc compiler that was suggested in the user guide on windows (with cygwin).

I have build and verified bootloader, uart and demo applications. No I am trying to verify gpio example. It builds successfully, but when I load it the led is not blinking.

Can anybody try it or may be knows what can be wrong with that example.

Thank you,

Valentin

over 13 years ago

0 Sujith KV over 13 years ago

TI__Intellectual 2525 points

Hi Valentin,

Did the led blink application work when you tried with the pre-compiled binary (binary\armv7a\cgt_ccs\am335x\beaglebone\gpio) with the StarterWare package ? Are you facing problem only after recompiling and loading?

Regards,

Sujith

0 Sujith KV over 13 years ago in reply to Sujith KV

TI__Intellectual 2525 points

Hi Valentin,

We built the tiimage tool also in cygwin, since the a.exe has to be renamed to a.out. Using this a.out, created gpioLedBlink_ti.bin, and the application worked ( with bootloader ).

We also tried gpioLedBlink.out generated from Cygwin, loading via CCS, it worked too.

Regards,

Sujith.

0 Valentin Ivanov over 13 years ago in reply to Sujith KV

Intellectual 350 points

Hello Sujith,

What version is your gcc (arm-non-eabi-gcc --version)? Can I please have your gpioLedBlink.out and gpioLedBlink_ti.bin files. I want to compare with mine.

Thank you,

Valentin

0 Sujith KV over 13 years ago in reply to Valentin Ivanov

TI__Intellectual 2525 points

Hi Valentin,

Please find the files attached. We use the compiler version suggested in the User Guide. (arm-2009q1-161-arm-none-eabi).

8154.GPIO_LedBlink_05_Cygwin.rar

Regards,

Sujith.

0 Valentin Ivanov over 13 years ago in reply to Sujith KV

Intellectual 350 points

Interesting. I use arm-2009q1-161-arm-none-eabi as well. I compared the files. The first difference is that your gpioLedBlink_ti.bin is 4 bytes bigger 936 bytes total. Even though TI header inside file shows 932. In my case the file size and TI header are both 932 exact.

Any thoughts?

0 Valentin Ivanov over 13 years ago in reply to Valentin Ivanov

Intellectual 350 points

Hi Sujith,

I have tried your gpioLedBlink_ti.bin and the led doesn't blink too. My board is Rev A3. Other strange things is that I have tried the demo application after building it and it works fine. Both parts of the demo that use that LED. This is a very weird issue and I really would like to get to the bottom of it.

Would it help If I provide my binaries?

Regards,

Valentin

0 Sujith KV over 13 years ago in reply to Valentin Ivanov

TI__Intellectual 2525 points

Hi Valentin

It seems there is some problem with the image converter. Could you please try with the attached binary? [please rename it to .bin]

3438.gpioLedBlink_ti.zip

Regards,

Sujith.

0 Valentin Ivanov over 13 years ago in reply to Sujith KV

Intellectual 350 points

That one works! What is the issue with the image converter?

Regards,

Valentin

0 Sujith KV over 13 years ago in reply to Valentin Ivanov

TI__Intellectual 2525 points

hi Valentin,

The image converter was reading the image file word by word and putting into the modified image. But if the total image size is not word aligned, problem happens. This will be fixed in the next StarterWare release.

Regards,

Sujith.

0 Valentin Ivanov over 13 years ago in reply to Sujith KV

Intellectual 350 points

I have just tried it in the new 02.00.00.06 and the issue has been fixed.

Thank you for taking care of it!

0 Don Lawrence over 10 years ago

Expert 1320 points

Hi Valentin. You said:
I am using gcc compiler that was suggested in the user guide on windows (with cygwin).

Can you post how you did this?
Thanks.....................dd

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gpio example for beaglebone compiled with gcc