search

Gremsy / gSDK

SDK application used by software to control the Gremsy’s gimbal
21 stars 21 forks source link

Lost Connection! #4

Open alduxvm opened 3 years ago

alduxvm commented 3 years ago

Hi!

Using gremsy T3v3, testing firmwares:

I'm connecting the gimbal to port COM2 and I'm using a usb to serial cable for my computer.

I enabled the MAVLINK control using the gTuneDesktop v1.4.5 app, my gimbal show the next in windows:

Screen Shot 2021-05-20 at 8 46 51 AM

When trying the SDK in linux, I always have the problem of Lost Connection!, the port in linux is /dev/ttyUSB0:

~/gSDK/build$ ./gSDK -d /dev/ttyUSB0
OPEN PORT
Connected to /dev/ttyUSB0 with 115200 baud, 8 data bits, no parity, 1 stop bit (8N1)

START READ THREAD 

 Lost Connection!
 Lost Connection!
 Lost Connection!
 Lost Connection!
 Lost Connection!
 Lost Connection!
 Lost Connection!
 Lost Connection!
 Lost Connection!
 Lost Connection!
 Lost Connection!
 Lost Connection!
 Lost Connection!
 Lost Connection!

I tried all above firmwares and not luck...

What to do?

clolsonus commented 3 years ago

One thing you could double check is that your TX / RX lines are correct. I had an issue with a drone-code standard uart cable (6-pin) between my pixhawk4 and the gimbal until I realized the TX/RX lines were reversed on the gimbal side. I've come to expect peripherals to just plug in and work, so this one caught me off guard.

gyillikci commented 2 years ago

Its explained in https://github.com/Gremsy/gSDK/blob/master/doc/gSDK%20Documentation_v2.3.0.pdf Page 13

rrr6399 commented 2 years ago

Do you have to use the UART interface of the Gremsy with a FTDI cable? Can the gSDK work using the Gremsy's usb connection? (I'm thinking not, since I'm getting the "Lost Connection" message when I attempt to connect to /dev/USB0. There is a serial entry under /dev/serial/id so it seems that Ubuntu is recognizing it as a serial connection.)