Vectornav VN-100: parsing serial data

Other Hardware Sensors
1

Hi everyone,

I have a VN-100, and a Teensy 3.2. They won't talk to each other.

Seriously though - does anyone know how to setup this IMU so that I can parse the data? The most "famous" parser I've seen is this, and it basically uses Serial2 as the input source.

(if you're not familiar with the sensor - it's very pricey but not 'designed' to work with microcontrollers directly, or something. there's just no support whatsoever)

Anyway, I'm thinking my problem is with the wiring.

Serial2 corresponds to Rx/Tx pins #9 and 10 on the Teensy, respectively. I've connected the sensor's Tx/Rx pins to the Teensy's - Tx to Rx and all (note: the sensor has two sets of Tx/Rxs; one at RS-232 voltage and one at TTL; I'm obviously using the TTL pair).

Other than those two, and Vcc+GND, does anything else need to be connected to establish a serial connection? The sensor's datasheet shows there are quite a few more pins available, but I don't think they are relevant to Arduino.

If it matters, I'm getting gibberish when I read from the serial. Lots of "QQ Q" and accented letters - which made me think it was a baud rate issue; but I tried all possible baud rates in "Serial2.begin" and none of them fixed it.

So.. any idea? If you have any type of suggestion - please feel free to reply, I'd appreciate any kind of help.

2

UPDATE:

Apparently, the only wrong thing was printing the values to the monitor. I used serial.printf("%s",c) to print the character read directly from the IMU, and that came out as gibberish. Once I changed to serial.print(c) everything made sense.

I'm still having trouble with the parser, as it doesn't convert the string to proper values, but at least I'm making progress!

3

Do you have some progress?
I try to communicate, but without sucess. =(