[Paparazzi-devel] Cannot read messages from ap

[Aniket Aranake]

Hello all,

I am trying to read messages transmitted by the autopilot. I have been able to get demo4 to work, which transmits the cpu_time using DOWNLINK_SEND_TAKEOFF by using the following procedure:

1. Connect the autopilot to /dev/ttyUSB0 (I use UART1)
   
2. In one terminal, run the program sw/ground_segment/tmtc/link
3. In a second terminal, run the program ivyprobe '(.*)'
4. Open the device /dev/ttyUSB0 in a serial terminal, I use a program called cutecom for this purpose.

By doing this, I can read the cpu_time in the terminal running ivyprobe. My problem is that this does not work with a full autopilot flashed onto the board, in my case funjet1. No messages appear in ivyprobe, although huge amounts of hex data is showing up in the serial terminal. I have tried this with and without maxstream serial modems, configuring everything to 9600 BAUD. Additionally, when I try to run the "Flight address@hidden BAUD" session, the GCS is completely blank; the aircraft does not appear on the main panel and no controls/info appear in the botom.

Any help would be greatly appreciated. Thanks!
Aniket