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- Thread starter nbalderaz
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What processor are you using?
With most processors, the data direction register will set a bit as output with the corresponding bit the DDR low (say) and as an input with the bit high (say).
So if the DDR has 8 bits and you wanted bit 2 as an output and the rest as inputs you would write 11111011 to the DDR.
If you wanted bit 1 and bit 6 as outputs then you'd write 10111101 to the DDR and so on.
In other words, it all depends on the bit pattern that you write to the DDR.
With most processors, the data direction register will set a bit as output with the corresponding bit the DDR low (say) and as an input with the bit high (say).
So if the DDR has 8 bits and you wanted bit 2 as an output and the rest as inputs you would write 11111011 to the DDR.
If you wanted bit 1 and bit 6 as outputs then you'd write 10111101 to the DDR and so on.
In other words, it all depends on the bit pattern that you write to the DDR.
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