I have an issue.. I had two micos, one didn't work.. I re-burned the bootloader and it sprang into life.
To do this I programmed my UNO as an "Arduino as ISP" But I think the micro was still selected. It worked fine as a programmer, but I cannot get it back I even tried a new 328p and used a parallel programmer, Nada.
It reports no error, just sits at "uploading" forever... I think its set to 19200 ( micro ) and will not connect..
I doubt the new 328p has the bootloader on it, unless you've burned the bootloader already. Also, check what your programmer is set to now.
Turn on "Show verbose output during: [ ] compilation [X] upload" in Preferences. Then try the upload again and post all the messages here.
Verbose is on..
avrdude sits and waits for 10 NON acknowledgements..
This board worked fine for years until I uploaded the "Arduino as ISP" sketch...
As I said... I manually programed a brand new bootloader onto a new chip.. Just doesn't talk to the PC..
Something has gone wrong.... Whats most annoying is they weren't even my micro's I was doing a favour!!
I've ordered a new Arduino... Anyone need a coaster!
Sounds like you just need a Programmer, and stop messing with the Arduino as ISP.
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I have one and have posted about it here in the forum.
Doubtful this is the problem, but if you connected a capacitor between RESET and GND on the UNO when using it as a programmer, that needs to he removed before you can load a new sketch on the UNO.
CrossRoads:
Sounds like you just need a Programmer, and stop messing with the Arduino as ISP.
$7.77, free shipping in the US
Pololu USB AVR Programmer v2.1
I have one and have posted about it here in the forum.
I have MANY programmers... USBasp ( which took ages to configure... Had to download libusbk to get that working)
I have a TL866 which can program the ATMEL avr range.. Then I have (Sorry had) and arduino UNO..
I will take a look see though.
david_2018:
Doubtful this is the problem, but if you connected a capacitor between RESET and GND on the UNO when using it as a programmer, that needs to he removed before you can load a new sketch on the UNO.
Yep Doubtful I also use other micro's Blue pill, Teensy, chipkit.etc.. where this is needed...
I do not mean to be ungrateful, but new to this I aint... I just hate loosing favoured equipment...
I've been using Arduino for years... Never come across this though...
One question.. If the thing is set to 19200 How do I get it back... Surely if the 328p programmed succesfully with optiboot it should have worked....
Are you using the Arduino IDE? Selecting UNO as the board type will set the baud rate correctly during programming, unless you have edited the boards.txt file.
Using the UNO as an ISP programmer should not damage anything on the board.
I have a feeling that the USB part is in-operational... I think once the new one is here, I'll try loading a bootloader to an empty chip.. Then I'll know...
These are tuff lil b**gers so I'm surprised...
You can do a loopback test to see if the USB to serial is working.
david_2018:
You can do a loopback test to see if the USB to serial is working.
Too late... Its in the bin... I spent far too much time on it already..
Thanks for all the replies... You can mark this thread as solved ( or given up )
Removed from the bin ( I'm a die hard) One more try.. I found a web site with slightly different fuse settings.
I used the TL866 with the same optiboot.hex BUT!! Used 0xDE instead of 0xD6 for the high fuses..
Sprang into life... Brand new chip in said Arduino UNO and working great.. L fuses 0xFF.. H fuses 0xDE e fuses ( left as was ).. Working....
I must have missed something last time...
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