Thread: Discussion FlySky/Turnigy 9X Protocol
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Old Jan 02, 2013, 05:26 PM
ThierryRC is offline
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France, Alsace, Strasbourg
Joined Dec 2012
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Nice job catching rx spi dialog Surfbreizh!

But I can't understand how it works because mc (=microcontroller) never test a flag or something like that to know if RX packed arrived while repeating sequence:

A -> go in standby mode
F -> reset fifo read
0F xx -> choose channel xx
C -> goes in RX mode

Then you switch on TX and mc send "40" to check "Mode Register" flag !
How did mc knows TX was switched on?
Is there an other hardware link than spi (i mean gpio1 or 2 as exemple) between A7105 and mc?
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