pic18f driving usb printers

[maheshmurty]

I wanted to ask then what is USB OTG. I read some articles over the web & came to know that USB OTG helps an embedded device to configure both as a device / host. So can't we do anything with it?

[Demon]

Until Microchip (and probably PBP) announce they support USB on the go specification for 16F and 18F, our PICs will remain USB slaves and won't be able to act as USB masters.

Only the host can schedule the configuration and data transfers over the link. The devices cannot initiate data transfers, they only respond to requests given by a host. OTG introduces the concept that a device can perform both the master and slave roles

http://en.wikipedia.org/wiki/USB_On-The-Go

Look at the PIC 24F family of products, they have OTG specs.

PIC24FJ256DA210
Universal Serial Bus Features:
• USB v2.0 On-The-Go (OTG) Compliant
• Dual Role Capable – Can act as either Host or Peripheral
• Low-Speed (1.5 Mbps) and Full-Speed (12 Mbps) USB Operation in Host mode
• Full-Speed USB Operation in Device mode

Robert