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* stk500.c (stk500_paged_write): Limit blocks written to no bigger 

than memory device size.
	(stk500_paged_write): Send whole block at once.
	(stk500_paged_load): Limit blocks read to no bigger than memory
	device size.
	[Contributed by Bill Somerville <bill@classdesign.com>, this fixes
	bug #5713.]


git-svn-id: svn://svn.savannah.nongnu.org/avrdude/trunk/avrdude@376 81a1dc3b-b13d-400b-aceb-764788c761c2
This commit is contained in:
arcanum 2003-10-13 21:32:53 +00:00
parent 55b2a88358
commit e77c593a0d
2 changed files with 38 additions and 14 deletions
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11
ChangeLog
View File

@ -1,5 +1,14 @@
2003-10-13 Bill Somerville <bill@classdesign.com>
* stk500.c (stk500_paged_write): Limit blocks written to no bigger
than memory device size.
(stk500_paged_write): Send whole block at once.
(stk500_paged_load): Limit blocks read to no bigger than memory
device size.
[This fixes bug #5713.]
2003-10-13 Eric B. Weddington <eric@ecentral.com>
*avrdude.conf.in: Fix for unterminated character error.
2003-10-13 Eric B. Weddington <eric@ecentral.com>

41
stk500.c
View File

@ -687,7 +687,7 @@ static int stk500_paged_write(PROGRAMMER * pgm, AVRPART * p, AVRMEM * m,
int memtype;
unsigned int addr;
int a_div;
int i;
int block_size;
int tries;
unsigned int n;
int flash;
@ -738,9 +738,16 @@ static int stk500_paged_write(PROGRAMMER * pgm, AVRPART * p, AVRMEM * m,
for (addr = 0; addr < n; addr += page_size) {
report_progress (addr, n_bytes, NULL);
if (addr + page_size > n_bytes) {
block_size = n_bytes % page_size;
}
else {
block_size = page_size;
}
/* Only skip on empty page if programming flash. */
if (flash) {
if (stk500_is_page_empty(addr, page_size, m->buf)) {
if (stk500_is_page_empty(addr, block_size, m->buf)) {
continue;
}
}
@ -749,14 +756,13 @@ static int stk500_paged_write(PROGRAMMER * pgm, AVRPART * p, AVRMEM * m,
tries++;
stk500_loadaddr(pgm, addr/a_div);
buf[0] = Cmnd_STK_PROG_PAGE;
buf[1] = (page_size >> 8) & 0xff;
buf[2] = page_size & 0xff;
buf[1] = (block_size >> 8) & 0xff;
buf[2] = block_size & 0xff;
buf[3] = memtype;
stk500_send(pgm, buf, 4);
for (i=0; i<page_size; i++) {
buf[0] = m->buf[addr + i];
stk500_send(pgm, buf, 1);
}
stk500_send(pgm, &m->buf[addr], block_size);
buf[0] = Sync_CRC_EOP;
stk500_send(pgm, buf, 1);
@ -788,7 +794,7 @@ static int stk500_paged_write(PROGRAMMER * pgm, AVRPART * p, AVRMEM * m,
}
}
return n;
return n_bytes;
}
static int stk500_is_page_empty(unsigned int address, int page_size,
@ -815,6 +821,7 @@ static int stk500_paged_load(PROGRAMMER * pgm, AVRPART * p, AVRMEM * m,
int a_div;
int tries;
unsigned int n;
int block_size;
if (strcmp(m->desc, "flash") == 0) {
memtype = 'F';
@ -846,13 +853,21 @@ static int stk500_paged_load(PROGRAMMER * pgm, AVRPART * p, AVRMEM * m,
for (addr = 0; addr < n; addr += page_size) {
report_progress (addr, n_bytes, NULL);
if (addr + page_size > n_bytes) {
block_size = n_bytes % page_size;
}
else {
block_size = page_size;
}
tries = 0;
retry:
tries++;
stk500_loadaddr(pgm, addr/a_div);
buf[0] = Cmnd_STK_READ_PAGE;
buf[1] = (page_size >> 8) & 0xff;
buf[2] = page_size & 0xff;
buf[1] = (block_size >> 8) & 0xff;
buf[2] = block_size & 0xff;
buf[3] = memtype;
buf[4] = Sync_CRC_EOP;
stk500_send(pgm, buf, 5);
@ -875,7 +890,7 @@ static int stk500_paged_load(PROGRAMMER * pgm, AVRPART * p, AVRMEM * m,
return -4;
}
stk500_recv(pgm, &m->buf[addr], page_size);
stk500_recv(pgm, &m->buf[addr], block_size);
stk500_recv(pgm, buf, 1);
if (buf[0] != Resp_STK_OK) {
@ -887,7 +902,7 @@ static int stk500_paged_load(PROGRAMMER * pgm, AVRPART * p, AVRMEM * m,
}
}
return n;
return n_bytes;
}