I compiled it by selecting non from ArduPilot->HAL board->non and got the hex file.I upload the hex file to APM2.5 in mission planner1.2.40. I can only see TX led(beside GPS connector) blinking. Nothing changes in mission planner.Can any one…
"I just bought AMP2.5. "No GPS" for me was because I used wrong cable for the old style GPS. After I used right cable for the new style GPS and plug in to the right port, I made my GPS working. Hope this helps."