Also, for clarity, the sample set rx & tx pin mode :
but it is already done by NewSoftSerial in methodes setTX() && setRX() …
is enough …
for the pins 11/12 problem, I suppose that their values can be set/get via ICSP connector and that’s what Xbee is doing ?
why not just using digital pins ?
My real problem is that I need to stack 2 shields (Xbee and NFC Card reader) that both use ICSP Connector and both does not allow it to be stack.
I suppose I can do something by soldering something but I don’tknow if it is safe to stack them.
It seem that SPI protocol need a Slave Select pin which is not on the ICSP connector.
Is one of pins 2 to 7 used by the xbee connector is used for this ?
I don’t thing because nothing declare it.
I’m new to arduino and I must say that I’m a little disapointed : why are there so much extensions if we can’t stack them ? Using one and only one module at a time is not really useful …