Game Input MultipleXer

when I set the chip type in FLIP, I can see FlashBuffer information 4KB.

could that be of any relevance ?

What's the bootloader size?

What avr board is it?

it's an arduino UNO (http://arduino.cc/en/Main/ArduinoBoardUno)

I don't know the bootloader size. for now the chip still has the default HEX


btw how did you skrink the program size ?
(i guess you used PROGMEM for the arrays?)

cTiger

the chip is a ATmega8U2 but all tutorials say to use AT90USB82 (datasheet are similar)

removing leds, hardcoding the Bdaddress({0x00, 0x11, 0x67, 0xD4, 0x16, 0x5F}) and using -ffunction-sections -fdata-sections -Wl,--gc-sections -mcall-prologues as extra flags might help you to go below 4k.

could you try ?

thanks

cT

Yes I used PROGMEM to move arrays from the sram to the flash.

Your other ideas didn't helped.

We also could move arrays to the eeprom, but as it's only 512 bytes the flash will still remain above 4K.

I think it's a better idea to try to reduce the bootloader size: link.

I can't test that as I don't have an atmega8u2.

looks good. the bootloader is compiling and only takes 2k in memory. I just have to put it on the board and see if it works

crossing my fingers.

cTiger on the verge of bricking an arduino UNO