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Communicating between two slave ports using an embedded controller (No PC)to transfer huge data

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Communicating between two slave ports using an embedded controller (No PC)to transfer huge data

	Praveenc1707@gmail.com posted on 14 Nov 2011 1:33 AM PST Member 4 Forum Posts

Hi All,

I am looking for solutions to transfer data from Source slave port to Destination slave port without using a PC. Please let me know which specific Sypress Host Controllers needs to be used. Are there any development kit that can be used to develop similar applications.

Thanks,

Praveen C

Re: Communicating between two slave ports using an embedded controller (No PC)to transfer huge data

	PRJI posted on 15 Nov 2011 08:03 AM PST Cypress Employee 333 Forum Posts

Hi,

You can use either EZ-Host or EZ-OTG. Development kit - Yes, we provide. You can find the details here http://www.cypress.com/?rID=14316

Thanks,

Prajith

Re: Communicating between two slave ports using an embedded controller (No PC)to transfer huge data

	Praveenc1707@gmail.com posted on 18 Nov 2011 10:43 PM PST Member 4 Forum Posts

Thanks Prajith. CY3663 is a comprehensive kit. Is there a cheaper development kit solution. Do Cypress also provide a simulator as its tools package?

Thanks,

Praveen C

Re: Communicating between two slave ports using an embedded controller (No PC)to transfer huge data

	bobthebender posted on 19 Nov 2011 12:06 AM PST Member 4 Forum Posts

The USB standard does not allow for this..........

There MUST be a host to init the transfer, otherwise when the slave device loads the FIFO buffer there is nothing to trigger a request to send the data. (I wish it was possible, becasue it would open some interesting possibilities)

The USB standard was built this way to reduce the cost of implementing the USB protocol and support chips, also there can be only one host on the chain, it needs to handle enumeration of devices and protocol.

This is why the Firewire protocol is far superior, becasuse any device can ttnsfer to any other device without hte need for a PC and infact there can be multiple devices communicating on the wire at the same time.

dig out a book called "USB in a nutshell", it clearly identifies what USB can and cannot do.

It would have been nice if Cypress had allowed the option for their USB microcontrollers to become a "HOST"

Re: Communicating between two slave ports using an embedded controller (No PC)to transfer huge data

	Praveenc1707@gmail.com posted on 19 Nov 2011 07:01 AM PST Member 4 Forum Posts

Thanks for the suggested reference material...

I did think that Cypress chip behavious as a USB Host controller and transfer between two slaves is possible... Do check the following link http://www.8051projects.net/e107_files/public/1235241781_15580_FT0_cypress_cy7c67300_usb.pdf

and share your thoughts.

Thanks,

Praveen C

Re: Communicating between two slave ports using an embedded controller (No PC)to transfer huge data

	aasi posted on 19 Nov 2011 08:35 AM PST Cypress Employee 1090 Forum Posts

Hi Bob,

Going by praveen post it seems he wants to use a USB host but not a PC.

Regards,

Anand

Re: Communicating between two slave ports using an embedded controller (No PC)to transfer huge data

	Praveenc1707@gmail.com posted on 20 Nov 2011 09:00 PM PST Member 4 Forum Posts

That's correct Anand! So is there a cheaper development kit which i can use?

Thanks,

Praveen C

Re: Communicating between two slave ports using an embedded controller (No PC)to transfer huge data

	aasi posted on 20 Nov 2011 09:31 PM PST Cypress Employee 1090 Forum Posts

Hi Praveen,

CY4640 and CY3663 are the 2 EZ-Host based kits provided by Cypress.

Regards,

Anand

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Communicating between two slave ports using an embedded controller (No PC)to transfer huge data

Re: Communicating between two slave ports using an embedded controller (No PC)to transfer huge data

Re: Communicating between two slave ports using an embedded controller (No PC)to transfer huge data

Re: Communicating between two slave ports using an embedded controller (No PC)to transfer huge data

Re: Communicating between two slave ports using an embedded controller (No PC)to transfer huge data

Re: Communicating between two slave ports using an embedded controller (No PC)to transfer huge data

Re: Communicating between two slave ports using an embedded controller (No PC)to transfer huge data

Re: Communicating between two slave ports using an embedded controller (No PC)to transfer huge data