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Fastest Possible serial comms with a PIC...

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Blueteeth

Well-Known Member
Hi, I'm still in the middle of my wireless audio project and I just wondered what people think the fastest async comms rate is for the PIC. I don't just mean the UART or SPI, just if anyone has written a program that allows two PIC micros to communicate.

At the moment I've got a simplex (data flows one way) setup between two 16F84A's with a datarate around 800kbs, enough for reasonable quality audio, but not much room for error checking such as CRC's.

Hope to hear your opinions.. :idea:

Blueteeth
 

bmcculla

New Member
A simple 8 bit bus with two handshaking lines should be able to run well into the MHz. It takes a fair number of pins but will be able to transfer MBytes/s. The software overhead should be minimal just reads or writes to a port and togling a pin.

A lot of Micros let you run their UARTS faster than standard RS232 rates. I've seen some that alllow you to run them at Mbits/s. Take a look at your data sheet to see what the limit on the UART is.

Brent
 
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