I'm trying to communicate an MSP430 to my laptop through a KC-21 module. Below is a capture of the data with the msp430 using a 115200 baudrate.
As you can see it has some issues. I tested a few things:
Sending data with the msp430 at 115200 and an FT232 => THIS WORKS OK
Sending data from the computer through the FT232 to the BT module and back to the PC, all at 115200 => THIS WORKS OK
Sending data with the msp430 at 9600 and the BT module => THIS WORKS OK
So it seems that the problem is isolated to the MCU working at 115200 with the module.
I had problems in the past with BT modules, the problem was an inprecise baudrate. Could this be the case? The baudrate slowly drift and eventually is bad enough to confuse the module. How do you think I could test to find out if that the case? How do you think I could fix it?