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I thought I had already committed this but I don't see it in CVS.

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This fixes EEPROM access using the STK500V2 programmer, partially
undoing part of a previous general fixup commit.  Choose the correct
read/write operations with the stk500v2 program function - the correct
one depends on the memory type.  EEPROM is byte addressable so uses
read/write.  FLASH is word addressable and so uses read_lo/write_lo.


git-svn-id: svn://svn.savannah.nongnu.org/avrdude/trunk/avrdude@501 81a1dc3b-b13d-400b-aceb-764788c761c2
This commit is contained in:
bdean
2005-09-16 21:23:14 +00:00
parent 61f6a06038
commit f96a7a09c1
2 changed files with 30 additions and 14 deletions
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36
stk500v2.c
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@@ -501,6 +501,7 @@ static int stk500v2_paged_write(PROGRAMMER * pgm, AVRPART * p, AVRMEM * m,
unsigned char buf[266];
unsigned char cmds[4];
int result;
OPCODE * rop, * wop;
DEBUG("STK500V2: stk500v2_paged_write(..,%s,%d,%d)\n",m->desc,page_size,n_bytes);
@@ -515,9 +516,18 @@ static int stk500v2_paged_write(PROGRAMMER * pgm, AVRPART * p, AVRMEM * m,
}
commandbuf[4] = m->delay;
if (a_div == 1) {
wop = m->op[AVR_OP_WRITE];
rop = m->op[AVR_OP_READ];
}
else {
wop = m->op[AVR_OP_WRITE_LO];
rop = m->op[AVR_OP_READ_LO];
}
// if the memory is paged, load the appropriate commands into the buffer
if (m->mode & 0x01) {
commandbuf[3] = m->mode | 0x80; // yes, write the stupid page to flash
commandbuf[3] = m->mode | 0x80; // yes, write the page to flash
if (m->op[AVR_OP_LOADPAGE_LO] == NULL) {
fprintf(stderr, "%s: stk500v2_paged_write: loadpage instruction not defined for part \"%s\"\n",
@@ -536,26 +546,27 @@ static int stk500v2_paged_write(PROGRAMMER * pgm, AVRPART * p, AVRMEM * m,
commandbuf[6] = cmds[0];
// otherwise, we need to load different commands in
} else {
commandbuf[3] = m->mode | 0x80; // yes, write the stupid words to flash
}
else {
commandbuf[3] = m->mode | 0x80; // yes, write the words to flash
if (m->op[AVR_OP_WRITE_LO] == NULL) {
if (wop == NULL) {
fprintf(stderr, "%s: stk500v2_paged_write: write instruction not defined for part \"%s\"\n",
progname, p->desc);
return -1;
}
avr_set_bits(m->op[AVR_OP_WRITE_LO], cmds);
avr_set_bits(wop, cmds);
commandbuf[5] = cmds[0];
commandbuf[6] = 0;
}
// the read command is common to both methods
if (m->op[AVR_OP_READ_LO] == NULL) {
if (rop == NULL) {
fprintf(stderr, "%s: stk500v2_paged_write: read instruction not defined for part \"%s\"\n",
progname, p->desc);
return -1;
}
avr_set_bits(m->op[AVR_OP_READ_LO], cmds);
avr_set_bits(rop, cmds);
commandbuf[7] = cmds[0];
commandbuf[8] = m->readback[0];
@@ -625,25 +636,30 @@ static int stk500v2_paged_load(PROGRAMMER * pgm, AVRPART * p, AVRMEM * m,
unsigned char buf[275]; // max buffer size for stk500v2 at this point
unsigned char cmds[4];
int result;
OPCODE * rop;
DEBUG("STK500V2: stk500v2_paged_load(..,%s,%d,%d)\n",m->desc,page_size,n_bytes);
page_size = m->readsize;
rop = m->op[AVR_OP_READ];
// determine which command is to be used
if (strcmp(m->desc, "flash") == 0) {
commandbuf[0] = CMD_READ_FLASH_ISP;
} else if (strcmp(m->desc, "eeprom") == 0) {
rop = m->op[AVR_OP_READ_LO];
}
else if (strcmp(m->desc, "eeprom") == 0) {
commandbuf[0] = CMD_READ_EEPROM_ISP;
}
// the read command is common to both methods
if (m->op[AVR_OP_READ_LO] == NULL) {
if (rop == NULL) {
fprintf(stderr, "%s: stk500v2_paged_load: read instruction not defined for part \"%s\"\n",
progname, p->desc);
return -1;
}
avr_set_bits(m->op[AVR_OP_READ_LO], cmds);
avr_set_bits(rop, cmds);
commandbuf[3] = cmds[0];
stk500v2_loadaddr(pgm, 0);