I goofed and got a bunch of production boards made with an ATMEGA328 SMT chip instead of the usual 328P that stock Arduino boards use. I found this thread http://www.avrfreaks.net/index.php?name=PNphpBB2&file=viewtopic&p=922850 that makes it sound like there aren't a whole lot of functional differences between the two and the sketch should work, but my problem is getting the sketch onto the chip since AVRDude is complaining about the different chip signature. Based on what I have found, there seem to be three solutions: 1) use -F to get avrdude to ignore the signature, 2) edit the avrdude.conf file to add the new chip by copying the 328P info and changing the expected signature, or using a newer version of avrdude which appears to have support built in.
Unfortunately, I have been thwarted on each approach. I cannot figure out where I should be using the -F, avrdude throws an error saying that the 328 is not a valid board type, even after I changed the .conf file, and I'm not sure where to get a new version of avrdude/how to link it to the IDE.
My addition to the boards.txt file since I am using an USB ISP Tiny to upload without a boatloader:
ASF.name=ASF100-E001
ASF.upload.using=usbtinyisp
ASF.bootloader.low_fuses=0xff
ASF.bootloader.high_fuses=0xde
ASF.bootloader.extended_fuses=0x05
ASF.bootloader.path=optiboot
ASF.bootloader.file=optiboot_atmega328.hex
ASF.bootloader.unlock_bits=0x3F
ASF.bootloader.lock_bits=0x0F
ASF.build.mcu=atmega328
ASF.build.f_cpu=16000000L
ASF.build.core=arduino
ASF.build.variant=standard
And my addition to the avrdude.conf file:
# ATmega328
#------------------------------------------------------------
part
id = "m328";
desc = "ATMEGA328";
has_debugwire = yes;
flash_instr = 0xB6, 0x01, 0x11;
eeprom_instr = 0xBD, 0xF2, 0xBD, 0xE1, 0xBB, 0xCF, 0xB4, 0x00,
0xBE, 0x01, 0xB6, 0x01, 0xBC, 0x00, 0xBB, 0xBF,
0x99, 0xF9, 0xBB, 0xAF;
stk500_devcode = 0x86;
# avr910_devcode = 0x;
signature = 0x1e 0x95 0x14;
pagel = 0xd7;
bs2 = 0xc2;
chip_erase_delay = 9000;
pgm_enable = "1 0 1 0 1 1 0 0 0 1 0 1 0 0 1 1",
"x x x x x x x x x x x x x x x x";
chip_erase = "1 0 1 0 1 1 0 0 1 0 0 x x x x x",
"x x x x x x x x x x x x x x x x";
timeout = 200;
stabdelay = 100;
cmdexedelay = 25;
synchloops = 32;
bytedelay = 0;
pollindex = 3;
pollvalue = 0x53;
predelay = 1;
postdelay = 1;
pollmethod = 1;
pp_controlstack =
0x0E, 0x1E, 0x0F, 0x1F, 0x2E, 0x3E, 0x2F, 0x3F,
0x4E, 0x5E, 0x4F, 0x5F, 0x6E, 0x7E, 0x6F, 0x7F,
0x66, 0x76, 0x67, 0x77, 0x6A, 0x7A, 0x6B, 0x7B,
0xBE, 0xFD, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00;
hventerstabdelay = 100;
progmodedelay = 0;
latchcycles = 5;
togglevtg = 1;
poweroffdelay = 15;
resetdelayms = 1;
resetdelayus = 0;
hvleavestabdelay = 15;
resetdelay = 15;
chiperasepulsewidth = 0;
chiperasepolltimeout = 10;
programfusepulsewidth = 0;
programfusepolltimeout = 5;
programlockpulsewidth = 0;
programlockpolltimeout = 5;
memory "eeprom"
paged = no;
page_size = 4;
size = 1024;
min_write_delay = 3600;
max_write_delay = 3600;
readback_p1 = 0xff;
readback_p2 = 0xff;
read = " 1 0 1 0 0 0 0 0",
" 0 0 0 x x x a9 a8",
" a7 a6 a5 a4 a3 a2 a1 a0",
" o o o o o o o o";
write = " 1 1 0 0 0 0 0 0",
" 0 0 0 x x x a9 a8",
" a7 a6 a5 a4 a3 a2 a1 a0",
" i i i i i i i i";
loadpage_lo = " 1 1 0 0 0 0 0 1",
" 0 0 0 0 0 0 0 0",
" 0 0 0 0 0 0 a1 a0",
" i i i i i i i i";
writepage = " 1 1 0 0 0 0 1 0",
" 0 0 x x x x a9 a8",
" a7 a6 a5 a4 a3 a2 0 0",
" x x x x x x x x";
mode = 0x41;
delay = 20;
blocksize = 4;
readsize = 256;
;
memory "flash"
paged = yes;
size = 32768;
page_size = 128;
num_pages = 256;
min_write_delay = 4500;
max_write_delay = 4500;
readback_p1 = 0xff;
readback_p2 = 0xff;
read_lo = " 0 0 1 0 0 0 0 0",
" 0 0 a13 a12 a11 a10 a9 a8",
" a7 a6 a5 a4 a3 a2 a1 a0",
" o o o o o o o o";
read_hi = " 0 0 1 0 1 0 0 0",
" 0 0 a13 a12 a11 a10 a9 a8",
" a7 a6 a5 a4 a3 a2 a1 a0",
" o o o o o o o o";
loadpage_lo = " 0 1 0 0 0 0 0 0",
" 0 0 0 x x x x x",
" x x a5 a4 a3 a2 a1 a0",
" i i i i i i i i";
loadpage_hi = " 0 1 0 0 1 0 0 0",
" 0 0 0 x x x x x",
" x x a5 a4 a3 a2 a1 a0",
" i i i i i i i i";
writepage = " 0 1 0 0 1 1 0 0",
" 0 0 a13 a12 a11 a10 a9 a8",
" a7 a6 x x x x x x",
" x x x x x x x x";
mode = 0x41;
delay = 6;
blocksize = 128;
readsize = 256;
;
memory "lfuse"
size = 1;
min_write_delay = 4500;
max_write_delay = 4500;
read = "0 1 0 1 0 0 0 0 0 0 0 0 0 0 0 0",
"x x x x x x x x o o o o o o o o";
write = "1 0 1 0 1 1 0 0 1 0 1 0 0 0 0 0",
"x x x x x x x x i i i i i i i i";
;
memory "hfuse"
size = 1;
min_write_delay = 4500;
max_write_delay = 4500;
read = "0 1 0 1 1 0 0 0 0 0 0 0 1 0 0 0",
"x x x x x x x x o o o o o o o o";
write = "1 0 1 0 1 1 0 0 1 0 1 0 1 0 0 0",
"x x x x x x x x i i i i i i i i";
;
memory "efuse"
size = 1;
min_write_delay = 4500;
max_write_delay = 4500;
read = "0 1 0 1 0 0 0 0 0 0 0 0 1 0 0 0",
"x x x x x x x x x x x x x o o o";
write = "1 0 1 0 1 1 0 0 1 0 1 0 0 1 0 0",
"x x x x x x x x x x x x x i i i";
;
memory "lock"
size = 1;
min_write_delay = 4500;
max_write_delay = 4500;
read = "0 1 0 1 1 0 0 0 0 0 0 0 0 0 0 0",
"x x x x x x x x x x o o o o o o";
write = "1 0 1 0 1 1 0 0 1 1 1 x x x x x",
"x x x x x x x x 1 1 i i i i i i";
;
memory "calibration"
size = 1;
read = "0 0 1 1 1 0 0 0 0 0 0 x x x x x",
"0 0 0 0 0 0 0 0 o o o o o o o o";
;
memory "signature"
size = 3;
read = "0 0 1 1 0 0 0 0 0 0 0 x x x x x",
"x x x x x x a1 a0 o o o o o o o o";
;
;
There are two possible issues that I can identify with this approach - I did not add a device code at the top of the .conf file because I could not find one in the amtel document that it references. Also, one of the forum posts talks about copying a ATmega328P.xml file to a ATmega328.xml and making similar changes, but I could not find that file on my computer.
Any suggestions?
Thanks,
Scott