USB with 2 UART device ?

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#1
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I'm starting to work on a hobby gps logger project. I want to be able to log the data to an SD card but also send it to my smartphone. Finally I was hoping that the device would have USB connection and act as a flash drive to pull the data from SD card as well as charge the battery. For this I want to use the LUFA library but I am not able to see any device that supports 2 UARTs for gps and bluetooth as well as USB. Is there such an 8 bit device? If no is there a way to achieve this, perhaps a low power bluetooth module that uses I2C anyone can recommend.

Currently I have the gps logging onto SD card running on a mega328p.

All I have is stk500 for programming and due to costs I was hoping I would not have to switch to Xmega.

Thanks
Luco

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Just bit-bang the lower traffic UART.

Or, sad to say, the U variety of Xmega probably is the easy answer. I'm sure there are devices with both USB and multiple UARTs.

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Excellent idea, I've seen then Procyon library for bit bang uart too so shouldn't be hard to implement.

I've looked at this xmega chip http://www.atmel.ca/devices/ATXMEGA256A3BU.aspx and it does seem that using one would be excellent for me. The biggest problem is that all the packages I see are surface mount, is there a popular breakout board that will allow me to get started with the xmega?

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Quote:

is there a popular breakout board that will allow me to get started with the xmega?

I've used these in the past:

http://www.futurlec.com/SMD_Adap...