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| How to get more UARTs out of our 9261... http://www.at91.com/samphpbb/viewtopic.php?f=9&t=19056 |
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| Author: | riceman0 [ Fri Mar 12, 2010 7:13 pm ] |
| Post subject: | How to get more UARTs out of our 9261... |
Hello. We are prototyping a design for our new AT91SAM9261 and keep thinking of new things we need to talk serial to. We are at 7 and counting. The problem of course is that the 9261 only has four UARTs (counting DBGU). I am new to the 9261 but am impressed with the configurability, the PIO system, etc. So I want to ask: is there some sneaky way to maybe internally multiplex additional pins into the UART, so that functionally we can (bidirectionally) interface with more than 4 external serial components. The other solutions are all pretty ugly (soft UART, a slave processor with additional UARTs), so I thought I'd ask if there is anything clever the 9261 can do internally that might help us here. Thanks for any thoughts. |
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