[avrdude-dev] [bug #26620] Cannot write to fuse bits[0,1,2,4,5]

[anonymous]

URL:
  <http://savannah.nongnu.org/bugs/?26620>

                 Summary: Cannot write to fuse bits[0,1,2,4,5]
                 Project: AVR Downloader/UploaDEr
            Submitted by: None
            Submitted on: Tue 19 May 2009 14:39:05 UTC
                Category: None
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: None
                  Status: None
                 Privacy: Public
             Assigned to: None
         Originator Name: Martin Edney
        Originator Email: address@hidden
             Open/Closed: Open
         Discussion Lock: Any

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Details:

I can read the fuse bit value FUSE[0,1,2,4,5] but cannot right to them.  i
have found where in the stk500v2.c code where it should be declared but it is
not, I am using the ATXMEGA128A1 and avrispv2.

Command prompt:

avrdude -c stk500v2  -p x128a1  -P usb  -u -U fuse0:w:0xff:m


G:\PRODUCTN\AVRDUDE\Brunel\A50-0232LF_Brunel Camera>avrdude -c stk500v2  -p
x128
a1  -P usb  -u -U fuse0:w:0xff:m

avrdude: AVR device initialized and ready to accept instructions

Reading | ################################################## | 100% 0.00s

avrdude: Device signature = 0x1e974c
avrdude: reading input file "0xff"
avrdude: writing fuse0 (1 bytes):

Writing |                                                    | 0%
0.00savrdude:
stk600_xprog_write_byte(): unknown memory "fuse0"
 ***failed;
Writing | ################################################## | 100% 0.00s

avrdude: 1 bytes of fuse0 written
avrdude: verifying fuse0 memory against 0xff:
avrdude: load data fuse0 data from input file 0xff:
avrdude: input file 0xff contains 1 bytes
avrdude: reading on-chip fuse0 data:

Reading | ################################################## | 100% 0.02s

avrdude: verifying ...
avrdude: verification error, first mismatch at byte 0x0000
         0xff != 0x7f
avrdude: verification error; content mismatch

avrdude done.  Thank you.


G:\PRODUCTN\AVRDUDE\Brunel\A50-0232LF_Brunel Camera>PAUSE
Press any key to continue . . .

stk500v2.c code...



static int stk600_xprog_write_byte(PROGRAMMER * pgm, AVRPART * p, AVRMEM *
mem,
                                   unsigned long addr, unsigned char data)
{
    unsigned char b[10];

    /*
     * Fancy offsets everywhere.
     * This is probably what AVR079 means when writing about the
     * "TIF address space".
     */
    if (strcmp(mem->desc, "flash") == 0) {
        b[1] = XPRG_MEM_TYPE_APPL;
        addr += 0x00800000;
    }else if (strncmp(mem->desc, "fuse", strlen("fuse")) == 0) {
        b[1] = XPRG_MEM_TYPE_FUSE;
        addr += 0x008f0000;
        )else if (strcmp(mem->desc, "boot") == 0) {
        b[1] = XPRG_MEM_TYPE_BOOT;
        addr += 0x00800000;
    } else if (strcmp(mem->desc, "eeprom") == 0) {
        b[1] = XPRG_MEM_TYPE_EEPROM;
        addr += 0x008c0000;
    } else if ( (strcmp(mem->desc, "lockbits") == 0) || ((strncmp(mem->desc,
"fuse", 4)) == 0) )
        b[1] = XPRG_MEM_TYPE_LOCKBITS;
        addr += 0x008f0000;
    } else if (strcmp(mem->desc, "usersig") == 0) {
        b[1] = XPRG_MEM_TYPE_USERSIG;
        addr += 0x008e0000;
    }else {
        fprintf(stderr,
                "%s: stk600_xprog_write_byte(): unknown memory \"%s\"\n",
                progname, mem->desc);
        return -1;
    }

Can you help?




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