[PD] Pduino output mode and I/O numbering differences

[Georg Holzmann]

Hallo David !

> What I'm confused about is that usually in microcontroller programming, 
> there is a symmetry between setting the data direction of a pin (i.e. 
> input or output), and setting/clearing a bit on that pin. For instance, 
> in AVR C, if I want to assert a HIGH voltage on pin D0, I would write:
> 
> DDRD = 0x01;    // set data direction for pin 0, port D to output
> PORTD |= 0x01; // set value of pin 0, port D to HIGH

okay... (I think I still didn't really get what you want to say ...)
For the arduino there is a function to define input/output of a pin and 
then to write/read from that pin ...
So in PD this are "wrappers" for these funcions - you have to set 
input/output mode firt one time, then you can simply use digital in- or 
output ...

> different - but since arduino/pduino is supposed to be good for physical 
> computing students who know little about the nitty-gritty details of 
> hardware/software integration, it should be as straightforward as possible.
it should be as straightforward as possible (I mean the help patch - the 
test patch is a little bit confusing ...)

LG
Georg