DM355_gadgetfs

Mohammad Kapadia

Dear experts,

I want to implement PTP (Picture Transfer Protocol) for USB interfacing of my DM355 leopard board. I want to transfer Images over USB, where my board is a gadget and the Windows PC will be host. I have found one sample code for PTP on the following link

http://git.denx.de/ptp-gadget.git/?p=ptp-gadget.git;a=tree;h=bcfb54b759a62c76bb8e2e2b62a2c4a1838e03c4;hb=726d2320922cb215671de43ae69cda73cacb0924

This creates an application for PTP which implements USB gadgetfs for communication. I have been able to compile this application successfully. I followed the following procedure on my board.

(1) insmod gadgetfs.ko

(2) mkdir /dev/gadget

(3) mount -t gadgetfs gadgetfs /dev/gadget

(4) ./ptp

I didn't get any problem till step 3. When i executed the application in step 4, it said file cannot be executed. I have checked the permission and that is proper.

Can someone guide me whats going wrong in this?

Thanking you.

over 15 years ago

0 swami over 15 years ago

TI__Expert 7435 points

Mohammad,

Pl. check whether the ptp executable has been compiled for ARM using the code sourcery tool chain.

regards

swami

0 Mohammad Kapadia over 15 years ago in reply to swami

Prodigy 190 points

Dear Swami,

Thanks for your quick reply. Yes i have already checked the proper path of the toolchain in the makefile. It is correct. What can be another possibilities?

0 Mohammad Kapadia over 15 years ago in reply to Mohammad Kapadia

Prodigy 190 points

Any update on this????

0 Ajay over 15 years ago in reply to Mohammad Kapadia

TI__Genius 9460 points

Mohammad,

I hope you are following the below README section of open source driver.

http://git.denx.de/ptp-gadget.git/?p=ptp-gadget.git;a=blob;f=README;h=ff124039591dae5ffc915624384687b17e528ba0;hb=726d2320922cb215671de43ae69cda73cacb0924

You can also send mail to the writer of this driver as mentioned in ptp.c

Regards,

Ajay

0 K Md Feroz Irfan over 15 years ago in reply to Ajay

TI__Expert 7225 points

Hello Ajay,

Thank you for your inputs.

Considering EMAC based transfer as another option,

customer searched through the DM355 documents but could not find a concrete example of using EMAC for control and data transfer. It would really be helpful if you could point me to some specific code that can be used for our purpose.

Thanks & Best REgards

Feroz

Regards

0 Mohammad Kapadia over 15 years ago in reply to Ajay

Prodigy 190 points

HI Ajay,

Yes i have followd the readme section of that driver..... I have also mailed to the author but i have not got any reply... I need some guidance regarding this.

Any help will be really appreciate....

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DM355_gadgetfs