Arduino Due TXD3 & RXD3 to use as serial ports

hi,

i have question usart ports on arduino due (atsam3x8e). according atsam datasheet, there 2 pins (pb20 , pb21, pin number 91 , 92) usart pins. have xbee module need connect these 2 pins (i know there other txds available on board, they're being used already) send , receive data mcu. there way access these pins , use them serial comms?

thanks

hi,

don't have experience deu, mee looks like:
on due's page says:
"serial: 0 (rx) , 1 (tx)
serial 1: 19 (rx) , 18 (tx)
serial 2: 17 (rx) , 16 (tx)
serial 3: 15 (rx) , 14 (tx) "
so guess is:

code: [select]


#include <softwareserial.h>

softwareserial myserial(15, 14); // rx, tx


but not sure how use in combo other 2 uart signals.

good luck

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