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interfacing blackfin to blackfin processors via uart to uart communication

Question asked by tzvikf on Sep 21, 2009
Latest reply on Jan 9, 2012 by sweet7kytty

Hello

 

I have a question on interfacing uart to uart issue:

I have my own BF533 based boards and I want to communicate between them via UART port.

How do I do that?

Will it suppose to work with connecting 3 wire cable? (RX to TX,TX to RX, GND to GND).

I have tried that and I get no data in my receive board.

I have configured the dma6 for receiving trough uart and dma7 for transmitting trough uart.

If I send data trough other device to the blackfin the data is received OK but from blackfin to blackfin, I get no data even no start of data.

Any ideas?

 

Thanks in advance

 

Tzvika

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