avrdude atmega168p support

[digitaladdictions]

I bought a barebones AVR kit that came with a 328p and had some good success with it controlling a servo. I wanted to buy some additional micro's but everyone seemed to be out of 328p chips. Being I am just starting out I was not coming anywhere near filling up the flash or EEPROM. Im not sure where Im at with RAM. In any case I figured the 168p which was in stock would be just fine for my experimenting and learning.

My problem is that avrdude does not recognize atmega168p or m168p as a micro controller it supports. It does support the 168 however so I copied the definition for the 168 and changed the id, desc, and signature and appended it to the end of avrdude.conf. I programed the chip and verified it and it appears to have worked but I have not done extensive testing. Is this all I need to do? Are there other changes? Are the chips significantly enough different that this will come back to bite me?

Code: Select all

#------------------------------------------------------------
# ATmega168p
#------------------------------------------------------------

part
    id              = "m168p";
    desc            = "ATMEGA168P";
     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 0x94 0x0b;
    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            = 512;
        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 x 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 x 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   x  a8",
			  " a7  a6  a5  a4     a3  a2   0   0",
			  "  x   x   x   x      x   x   x   x";

	mode		= 0x41;
	delay		= 5;
	blocksize	= 4;
	readsize	= 256;
        ;

    memory "flash"
        paged           = yes;
        size            = 16384;
        page_size       = 128;
        num_pages       = 128;
        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 0 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 0 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 0 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";
        ;
;

[adafruit]

should be ok but note that v5.9 just came out. upgrade!

[cucu]

Hi, I'm working with the same ATMEGA168p micro on a Diecimila board.
I used the signature changing fix to be able to upload my code using the arduino IDE and a AVRISPMKII (no bootloader) but it seems is not using the external oscillator. I uploaded a one second delay blinkind led sketch and it takes 16 seconds to blink...

Any ideas? I have been cheking and the pin mapping is the same, so is not a hardware issue, probably the fuses to use the external oscillator are not the same, but I know anything about it.

Thanks in advance