Posted by Rick Retzlaff on September 2, 2009 at 9:56pm
HiHoI am having trouble establishing serial communication. I think it may be the GPS has been put into a weird mode (I may have sent something to it while trying to download some arduino code) and I cannot send a reset to the serial port because I cannot communicate via the serial port.I'm communicating to the GPS with an FTDI board (Rx and Tx and power all connected). On power up, the FTDI Rx light flashes every second. The GPS itself has a flashing red light (showing it has a fix).looking at the serial port with a serial Monitor (the one built into the Arduino IDE) at 4800 baud shows a non-ASCII gibberish sting being sent every second, synchronized with the flashing of the Rx light.Trying to communicate with theSirfDemo gives me a CE_FRAME and CE_BREAK error. if I try to send an initialization command I get a Tx flash on the FTDI board but nothing seems to change.It looks to me like the GPS is in a weird mode. The only thing that I have seen to reset to factory defaults is to let the device sit for 10 days. Surely, there has to be a better way.My questions are:-- is indeed the GPS set to some weird mode?-- is it possible to reset factory defaults without 10-daysRick
You need to be a member of diydrones to add comments!
If I just listen using the arduino serial monitor, I still just get binary garbage at 1s intervals.
Sirfdemo just gives CE_FRAME and CE_BREAK errors. Under "action" - 'Switch to SiRF protocol' is greyed out. Nothing I do makes any change!!!!!!!!!!!!!!!! Tried ALL the baud rated just in case - nothin
Can anbody help me????? I am about to hit it with a hammer and be done woth it...
ArduPilot programs the EM406 into binary mode if you use the jumper. (you can tell because the red LED on the module gets super dim). If you did that, just wait 10 days and it will reset to NMEA
Replies
waited 10 days - no change
If I just listen using the arduino serial monitor, I still just get binary garbage at 1s intervals.
Sirfdemo just gives CE_FRAME and CE_BREAK errors. Under "action" - 'Switch to SiRF protocol' is greyed out. Nothing I do makes any change!!!!!!!!!!!!!!!! Tried ALL the baud rated just in case - nothin
Can anbody help me????? I am about to hit it with a hammer and be done woth it...
Rick