arduino Nano : software serial only works at 9600 bauds

Using Arduino Networking, Protocols, and Devices
1

hello,

In my sketch i use a software serial Tx on pin 9 of an arduino nano toward my computer and at the same time the built in Rx hardware serial at 115200 bauds from another device (GPS).

The Tx on pin 9 correctly works at 9600 bauds but apparantly (i could check that) these write instructions take too much time so that my read instructions on the hardware serial lose data ... so i really need faster than 9600 bauds on the software serial, ... but then if i use for instance 38400 the bytes received on my computer (i use TTL to USB ) are not correct anymore...

thank you for any advices

Fred

2

Buy the Mega 2560 which has 4 hardware serial ports.

3

thank you for any advices

ieee488 has one good idea.

Posting your code would be another.

4

Please post your code.

SoftwareSerial is slow. I really would not expect much more than 9600 baud.

...R

5

i managed to make it work (at 115200) by using the hardware serial Rx for one device (GPS) and the hardware Tx for another (computer) ...though i dont know if this is recommended or not (?)

6

If it works, use it.

...R