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usbasp.c: Added long addresses to support devices with more than 64kB (bug #20558) 

git-svn-id: svn://svn.savannah.nongnu.org/avrdude/trunk/avrdude@746 81a1dc3b-b13d-400b-aceb-764788c761c2
This commit is contained in:
fischl 2007-07-24 16:43:25 +00:00
parent cf45cb52ab
commit c3d9d97ee1
3 changed files with 34 additions and 0 deletions
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6
ChangeLog
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@ -1,3 +1,9 @@
2007-07-24 Thomas Fischl <tfischl@gmx.de>
* usbasp.c: Added long addresses to support devices with more
than 64kB flash. Closes bug #20558: Long address problem with
USBasp.
2007-06-27 Joerg Wunsch <j@uriah.heep.sax.de>
* Makefile.am (EXTRA_DIST): Add ChangeLog-2004-2006.

27
usbasp.c
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@ -316,8 +316,22 @@ static int usbasp_paged_load(PROGRAMMER * pgm, AVRPART * p, AVRMEM * m,
wbytes = 0;
}
/* set address (new mode) - if firmware on usbasp support newmode, then they use address from this command */
unsigned char temp[4];
memset(temp, 0, sizeof(temp));
cmd[0] = address & 0xFF;
cmd[1] = address >> 8;
cmd[2] = address >> 16;
cmd[3] = address >> 24;
usbasp_transmit(1, USBASP_FUNC_SETLONGADDRESS, cmd, temp, sizeof(temp));
/* send command with address (compatibility mode) - if firmware on
usbasp doesn't support newmode, then they use address from this */
cmd[0] = address & 0xFF;
cmd[1] = address >> 8;
// for compatibility - previous version of usbasp.c doesn't initialize this fields (firmware ignore it)
cmd[2] = 0;
cmd[3] = 0;
n = usbasp_transmit(1, function, cmd, buffer, blocksize);
@ -366,6 +380,19 @@ static int usbasp_paged_write(PROGRAMMER * pgm, AVRPART * p, AVRMEM * m,
blockflags |= USBASP_BLOCKFLAG_LAST;
}
/* set address (new mode) - if firmware on usbasp support newmode, then
they use address from this command */
unsigned char temp[4];
memset(temp, 0, sizeof(temp));
cmd[0] = address & 0xFF;
cmd[1] = address >> 8;
cmd[2] = address >> 16;
cmd[3] = address >> 24;
usbasp_transmit(1, USBASP_FUNC_SETLONGADDRESS, cmd, temp, sizeof(temp));
/* normal command - firmware what support newmode - use address from previous command,
firmware what doesn't support newmode - ignore previous command and use address from this command */
cmd[0] = address & 0xFF;
cmd[1] = address >> 8;
cmd[2] = page_size & 0xFF;

1
usbasp.h
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@ -39,6 +39,7 @@
#define USBASP_FUNC_WRITEFLASH 6
#define USBASP_FUNC_READEEPROM 7
#define USBASP_FUNC_WRITEEEPROM 8
#define USBASP_FUNC_SETLONGADDRESS 9
#define USBASP_BLOCKFLAG_FIRST 1
#define USBASP_BLOCKFLAG_LAST 2