When I use the external mode(Pixhawk Support Package) to connect the generated code in PX4FMU,there are some errors.

When I use the external mode to connect the generated code,there are some errors as follows

But I can ensure I have started the code

I have switched the hardware to armed,I have the right setup as follows

Besides,I can start a non-external mode generated code,it works well. So,I am really confused by above errors,I hope there are someone who encountered these errors can help me,thank you!

[lei he]

Hello, I have the same problem with you. I think it's a problem of Serial Port number. Did you solve this problem?

[cindy bear]

Hello,

In case you're still looking for a solution. I hope this helps, using the image from Djj as an example: If you're using an FTDI cable or radios, your baud rate is usually 57600, assuming that 'Prolific USB-to-Serial Comm Port" acts as one of those then

MEX-file arguments: 1 9 57600 5

Data Exchange Serial Port: (on your PX4 this could be TELEM 1, TELEM 2 or Serial 4/5) Assuming it's Serial 4/5 then 'ttyS6'

Baud Rate Select: 57600

If the error persists then check your wiring from the FTDI to the PX4, and that RX and TX aren't switched up.