I'm really an completely dumbfounded by this issue. I had a working Arduino Duemilanove up until today when I was tweaking the code using the Tone.h library. I got the thing playing all of the provided songs and was writing a add on program that would play a song according to what letter you send the arduino. This worked a few times perfectly. Then on the last upload, it compiled and loaded the code fine according to the IDE. However as soon as this finished the L LED started constantly flashing.
Since the arduino is communicating serially I have had to reset the ardunio every time I upload the code. I assumed that maybe one of my project partners has hit the reset during upload and maybe corrupted the boot load. No problem I thought, I had a extra 382 with the arduino boot load with a old project on it. So I exchanged chips. It worked fine with the old code on the replaced 382. However after the recompile and upload the same thing happens with the switched chip.
I am offically lost. I have no idea wtf is happening.
FWI, this is for a Senior Project Class. As I said it has been working fine for the last 4 weeks but now nothing with the L flashing.