Can't activate or read data from M600

[SkyJerms]

Followed the instructions on the Onboard SDK website, but once I confirm the port is open and hit activate in the Qt example, nothing happens. Nothing also happens when I hit obtain control. Any advice would be appreciated.

Other things to note:

• OES is a Windows laptop running Qt
• Baud rates are synced to 115200 through a USB port
• Screenshot
• Would like to read flight telemetry data from the M600

[lanyusea]

the baudrate in your screenshot is 230400 instead of 115200

[SkyJerms]

• Oops I must have changed it back to 230400 after testing. It gives the same result with 115 200 on both the assistant and the GUI.

[lanyusea]

em.... could you check if there are data stream sent from A3? by using some software like serial port monitor maybe this one https://sourceforge.net/projects/realterm/

[SkyJerms]

Used the Free Device Monitoring Studio, I see the program writing to the port but not reading anything. Also this is what the wiring looks like on the A3 (not sure if there is an issue here): wiring

[SkyJerms]

• Regarding the previous image:
  White = RX
  Green = TX
  Black = GND

[lanyusea]

if there is no data, it seems to be a hardware config issue.

the pin of API (from left to right) is: VCC GND TX RX
(the figure in our document is actually upside down compared with the real situation
which means you should connect GND to the GND of your USB-TTL, and connect the TX to your RX, connect the RX to your TX

[SkyJerms]

Oh I see. It's working now! Thank you!

[lanyusea]

:)