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[on:]

Hi ! sorry about my English , it isn't my mother tongue  

"bootloader will run for five seconds waiting for a program to be uploaded through the port"

but when I had download the program , and begin to use this borad , this "five seconds" waiting make me a little worry, is there someway to set this waiting time ? or is there a way to make the board run my program at once?

for example, could we do some change to bootloader,  when press the reset button , the LED between pin 13 and ground you will see it blinking(set the blinking time longer, about 1s),

when it blinking ,
if you press the reset button again, then enter the "program mode" , bootloader will run for five seconds waiting for a program to be uploaded through the port.
if you didn't do the secondly press,when blinking time over,the board will run my program at once.

Is it possbile?

[Reply #1 on:]

Hej Fallen,

the reason why the bootloader works this way is because there is almost no other way of making it smaller. Dave Mellis spent quite a lot of time optimizing an initial code that I made that was 2K.

However, I am confident that it will be possible to change the bootloader. It is also open source. If you want the code we could send it to you and you could take a look at how it works.

You will need to use winAVR to modify the bootloader's code (or AVR's development tools in Linux) but it is possible.

/David

[Reply #2 on:]

Thank you ! I download the winavr, and try to learn it , could you send the source to me ( email) ? thank you !
(and do you receive the email from me by a yahoo mail , there are the pic of diy board and my photo, because my gmail seems has some problem , but please send me to my gmail, thank you)