Bootloader apears to be overwitten when upload sketch

Development Tools IDE 1.x
1

I had a "virgin" 328p , I program the bootloader via ISP (avrdude and a parallel port programmer) It seemes to work fine and when I connect the board to the Arduino I can upload ONE sketch - ONE ! if I try to upload another sketch I get communication error .

OK , over in avrdude and reprogram the bootloader , and I can again uplaod ONE sketch....

For me it looks like the lock bit is not set?? But I do set the lock bit after burning the bootloader:

I use fuses lf=FF hf=DA EF=05 and 3F before i burn the bootloader for unluck and 0F for final lock of boot section

my bootloader file is ATmegaBOOT_168_atmega328.hex

I can load my sketch via the ISP , but I like to use the bootloader so I hope someone I help me out of the standstill?

2

Those symptoms usually mean that the auto-reset feature of the Arduino isn't working and you have to do a manual reset when you see the "Binary sketch size:".

When there is no sketch loaded the bootloader has nothing better to do than wait for an upload. When you have a sketch loaded the bootloader only runs briefly on Reset to check for a new upload. If there is no Reset, there is no way to send an uploader to the bootloader.

3

If you only knew how much time I have spendt on bootloader and fuses....................
Ofcause my board dont have autoreset , I build it :slight_smile: , Doing as you said with a manual reset did the trick .
a 1000 thanks