witilt displaying garbage

Wireless & IoT
1

I’m trying to get a witilt v2.5 working, but I can’t even get to the menu. I power it with 4.5v and pair up using BlueSoleil (and activating the serial port service of course). I then open my terminal program and connect to the proper port. Once connected, I hit the witilt’s reset button and get:

ÚZïJ
  zÊHOZJ
        f
         ûJnfJ
              ú

…then, if I type anything (anything, but here ‘1’), I get:

ÚZïJ
  zÊHOZJ
        f
         ûJnfJ
              úÚZïJ
                 zÊHOZJ
                       f
                        ûJnfJ
                             BZïJ
                               zÊHOZJ
                                     f
                                      ûJnfJ
                                           BZïJ
                                             zÊHOZJ
                                                   f
                                                    ûJnfJ
                                                         ú

Any ideas as to what is going on here?

2

Hey folks - I’m actually still having this problem…did I get a broken witilt from sparkfun?

More importantly - can I update the firmware of the witilt myself?

3

This looks like the common baud rate or #data bits mismatch.

Recheck the comm port settings. Sometime you just need to try every combination until it works.

It could also be inverted logic.

An O’scope would show exactly what the witilt is sending out.

I’ll guess you are connected to the DEBUG post since you typed a ‘1’.

The WiTilt manual states that the debug port is TTL level from derect connection to a PIC UART and requires an RS232 level shifter to go to a PC.

Com settings are: 57600, 8data, no parity, 1 stop.

4

I’ve tried all of the available baud rates, but I haven’t changed the #data bits. I’ll give that a shot.

I’m actually connected over bluetooth - I’ll attach a level shifter and see what pops out.

Thanks for the reply.