Arduino debugging tips
"Problem uploading code.....
avrdude: stk500_getsync(): not in sync: resp=0x78
avrdude: stk500_disable(): protocol error, expect=0x14, resp=0x78"
(or any other error report when uploading code, aside from the obvious ones like compile errors or choosing the wrong serial port)
Here are the seven most common causes and things to check.
1) Is your FTDI cable plugged in the right way? The black wire or side marked "black" should be on ArduPilot's BLK pin.
2) If you have the older ATmega168 board did you select "Arduino Diecimila" as the board in the Arduino Tools menu? If you have the newer ATmega328 board, did you select "Arduino Duemilanova w/ATmega328"?
3) Are you using the DIYDrones FTDI cable? We've had trouble with other ones...
4) Is the cable plugged into a USB hub? That can sometimes cause trouble. Try plugging it straight into your PC.
5) Is the ArduPilot board powered on, ideally through your RC system or ESC? (You can NOT power it from the FTDI cable; this is a safety measure to avoid power conflicts.)
6) The board is set up to auto-reset when you load a sketch with the FTDI cable, so you don't have to manually press the reset button to get the bootloader. If that's not working for you, check the RTS setting in your PC's port settings ("Set RTS on close" should be checked) as described here. [Note: if you're using Linux, there's no direct equivalent to this. Instead, you may have to unplug the USB and plug it back in every time you want to upload code]
7) Are you using the latest FTDI drivers? Install them if not. If you're still having trouble, try reinstalling them.
8) If you're using the Version 1 (red) shield, you should unplug you GPS module before loading code. The Version 2 (blue) shield does not require this.
If those all look fine and you're still getting the error message (especially if you can successfully load code to other Arduino boards), you may have a corrupted FTDI driver. Try reinstalling on another PC and see if that does the trick.
In some rare cases, a power glitch may have resulted in a corrupted ArduPilot bootloader on the ATMega chip. This tutorial will show you how to reload the bootloader. (Warning--for experts only and requires an AVR programmer. This should not be necessary for most people.)
Other problems can include "Serial port not found" (just check that you've selected the right serial port in the Tools menu. It's the one assigned when you first plugged in the FTDI cable--probably 5 or higher), and the Arduino IDE freezing (try unplugging the FTDI cable. If that doesn't work, just reboot your computer).
Tags: ardupilot
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Comment by Roy Stevens on February 27, 2009 at 3:50pm -
Hey guys,
I was fiddling with my board trying to upload sketches for a while and having no success. After a while (not sure exactly what I did to possibly cause this) when I plugged in the FTDI cable I got the message "USB Device Not Recognized" and it continued on to explain that the device has 'malfunctioned'. Sounds to me like I fried something on the board somehow but if anyone has a possible explanation I'd be grateful to hear your input.
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Comment by Noth666 on March 10, 2009 at 11:52am -
@jeff and roy: naw, you just need to manually reinstall the driver for the ftdi from the control panel. Or remove VID's (google how if you do not know, instructions on MS website) if the driver does not help. VID removal will fix it for sure.
I have another issue, I get the same error as above but different hexcode and also my MODE light never comes on. I am still trying to get it to work the first time and its still in the demo mode. LOCK and STAT blink the correct way.
Anyone have an idea of what is the issue? Board looks fine physically, looked it over with a magnifying glass to make sure there are no shorts.
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Comment by Chris Anderson on March 10, 2009 at 11:59am
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North66: Could you please describe the following:
--What FTDI cable are you using?
--How are you powering the board?
--Have you run through ALL of the checklist items above?
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Comment by Noth666 on March 10, 2009 at 12:19pm
- Chis, smack me if you want :P. I did not do the RTS thing until now, and it worked after I did.. Damn, I should know to check all the things in the list, I worked ages in techsupport...
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Comment by Neal Kelley on April 29, 2009 at 6:07pm
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Hello.. i have purchase my board from fun spark.. I can not seem to get the code loaded.. i am getting the "avrdude: stk500_getsync(): not in sync: resp=0x78
avrdude: stk500_disable(): protocol error, expect=0x14, resp=0x78avrdude: stk500_getsync(): not in sync: resp=0x78
avrdude: stk500_disable(): protocol error, expect=0x14, resp=0x78" error...
i have tried all of the other possible solution and no luck...
when i connect the sparkfun ftdi breakout.. the amber led blinks and i have a solid red light. When I start loading the software.. the blue led and amber led flash.. any suggestions?
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- i have my baud rate for the com port to 9600 and i also have checked that rts close deal...
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- @Neal: The baud rate doesn't matter. If you've got one of the new Atmega328 boards you need to select the ATmega328 board from w/in the Arduinino IDE
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Comment by Michael on May 2, 2009 at 6:05am -
Chris,
I keep getting the following error when i try to load the 2.1 code to the new 328 ArduPilot board "In function 'void setup()':
error: 'init_ardupilot' was not declared in this scope In function 'void loop()':"
I read all the posts and did everything they say, but the same error keeps appearing, not sure what i have done wrong?
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Comment by space_nut on July 28, 2009 at 10:55pm - I'm having trouble getting the debugging code to send stuff back to the IDE..
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- Check your baud rate in the IDE. It must match the GPS baud rate. 57k is the default for the EM406
© 2010 Created by Chris Anderson
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