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Microcontroller Programming » Foodloader help
June 04, 2010 by n3ueaEMTP |
I picked up some 328's from mouser & want to install the NK bootlaoder. I've looked around the fourms to make sure I did it correctly but I am questioning my work. Foodloader loaded OK but the last line was: avrdude: 31756 bytes of flash verified Something tells me I've made a mistake somewhere but all I did was change the -c dapa to my programmer (usbtiny). Is this correct or do i need to do more work to get the NK bootlaoder correctly loaded? Thanks Chris B. |
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June 06, 2010 by mrobbins (NerdKits Staff) |
Hi Chris, That sounds right. When I look in bootloader328P at the foodloader.hex file, avr-size reports 1036 bytes in length. This gets installed in the last 2kB of the ATmega328P's flash memory space, so the final position is at memory location:
The avrdude output might be confusing because it's actually reporting the final memory position written instead of the total number of memory positions written, but it's fine! Mike |
June 06, 2010 by n3ueaEMTP |
OK, thanks Mike. I was thinking that is how much bytes the program used. Now I know for next time. Thanks again!! |
June 11, 2010 by n3ueaEMTP |
New question. I've downloaded a program that reads the time from a DS1307 RTC and communicates with the MCU via the TWI (I2C) module. In the opening comments of the program, there is this note: ATmega8 Running at 1MHz Internal Clock. Fuse Byte set as |follows. | |LOW=0x21 HIGH=0xD9 I'm using the AVR Pocket Programmer from Sparkfun. I tried modifing the bootloader makefile but that didn't go so well. Can anybody point me in the right direction please? Chris B. n3ueaEMTP |
June 11, 2010 by n3ueaEMTP |
I forgot to ask the question, how can I change the fuses to match what the program needs? Sorry about that. |
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