Comments on: Testing AVR universal bootloader on Atmega128 http://www.scienceprog.com/testing-avr-universal-bootloader-on-atmega128/ ScienceProg serves scientific, embedded, biomedical engineering, physics based contents. If you want your article or scientific project to be on this site, do not hesitate to contact and send to scienceprog@gmail.com. Fri, 16 May 2008 08:19:43 +0000 http://wordpress.org/?v=2.5.1 By: jkx http://www.scienceprog.com/testing-avr-universal-bootloader-on-atmega128/#comment-14237 jkx Wed, 03 Oct 2007 23:01:00 +0000 http://www.scienceprog.com/testing-avr-universal-bootloader-on-atmega128/#comment-14237 A good tips, is to use your program (not the bootloader) to reset the device. This avoid the need to a push the reset button. You can do this easily with something like this (for a ATMega8) void (*resetptr)( void ) = 0xE00; // Set up reset to bootloader SIGNAL (SIG_UART_RECV) { ..... if (c == 'r') { uart_puts("Reset \r\n" ); resetptr(); } ... } By this way, you can simply press r to reset, and flash. Even better, you can patch the program on the PC to do a automatic reset this way. Hum, I'm wondering if this bootloader can work with AVRdude ? (avrdude -p m8 -c avr910) Bye bye A good tips, is to use your program (not the bootloader) to reset the device. This avoid the need to a push the reset button. You can do this easily with something like this (for a ATMega8)

void (*resetptr)( void ) = 0xE00; // Set up reset to bootloader

SIGNAL (SIG_UART_RECV) {
…..
if (c == ‘r’) { uart_puts(”Reset \r\n” ); resetptr(); }

…
}

By this way, you can simply press r to reset, and flash. Even better, you can patch the program on the PC to do a automatic reset this way.

Hum, I’m wondering if this bootloader can work with AVRdude ? (avrdude -p m8 -c avr910)

Bye bye

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