Serial speed on pins.

Projects General Guidance
1

I have a module that uses 115200 RX/TX serial for control. Trying to hack the thing I used an UNO running software serial and at one point I tested the serial between two UNOs and found that I could get get good text up to 57600 but not quite at 115200.

I did a search here with 6 different word patterns and finally gave up.

Is the problem one of wiring? I don't have two MEGAs to check this with and when I try using the MEGA with the module there's only success to tell me I done it right which makes debugging a bit of a crapshoot.

2

I would not expect software serial to run well at 115200. If you want that you need to use H/W serial so look at a mega or a Due.

Mark