I'm using a nano with 2 serial devices, a Bluetooth radio and rfid reader, the RFID reader is connected to the first software serial and works without problems. when I use the BT device on the hardware serial all works fine, I can also see the RFID data being passed to the BT radio using serial mo…

I think i have resolved this.. and as there is nothing worse that searching for answers and only finding questions here is what I missed... Software serial supports more than one port at a time but you have to toggle between them as only 1 can be active at any one time, to do this I added a listen …

Serial.begin(9600); mySerial.begin(9600); btSerial.begin(9600); After this code is executed. mySerial (what a stupid name; you do NOT have a mySerial connected to those pins) is NOT listening. Only one instance of SoftwareSerial can listen at a time. mySerial.println("CD2"); //tell RFID reader to …

Thankyou for your comments Paul, yes the naming convention in the code isn't tidy nor complete and at this stage is stitched together to provide a proof of concept, it does not affect the function of this desktop test. the BT device at this stage was only ever a TX device which is why i had previou…

the mega would be holy unsuitable for the intended use. Generally one chooses the required hardware first, then designs the enclosure. There are other boards that have multiple hardware serial ports that are as small as or smaller than the Nano. The Teensys by pjrc.com come to mind.

I shall have a look at that, thanks.

You may be able to get my Yet Another Software Serial to work in parallel with SoftwareSerial. (I have never tried). ...R

Only one can listen at a time portOne.listen(); portTwo.listen(); .listen(); Enables that port

Software serial on nano fails to work with a 2nd software serial port is added?

Projects Programming

ian332isport July 10, 2016, 6:12pm 8

There's also AltSoftSerial if pins 8 & 9 are free.

Ian.

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Software serial on nano fails to work with a 2nd software serial port is added?

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