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Replace the fallback of avr_read_byte() and avr_write_byte() to

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avr_read_byte_default() and avr_write_byte_default (resp.) by directly
calling the latter functions from within all programmers that don't
implement their own read_byte()/write_byte() methods.  In turn, make the
read_byte() and write_byte() methods mandatory, and the cmd() method
(direct ISP command) optional instead (it's effectively mandatory for
any programmer using avr_read_byte_default()/avr_write_byte_default()
though).  Remove all the pointless cmd() method stubs from those programmers
that don't need it.

Eliminate avr_read_byte() as it was now completely identical to
pgm->read_byte().


git-svn-id: svn://svn.savannah.nongnu.org/avrdude/trunk/avrdude@684 81a1dc3b-b13d-400b-aceb-764788c761c2
This commit is contained in:
Joerg Wunsch
2006-11-20 15:04:09 +00:00
parent 23aeb38d13
commit afb13a9936
14 changed files with 141 additions and 114 deletions
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10
stk500.c
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@@ -176,6 +176,14 @@ static int stk500_chip_erase(PROGRAMMER * pgm, AVRPART * p)
unsigned char cmd[4];
unsigned char res[4];
if (pgm->cmd == NULL) {
fprintf(stderr,
"%s: Error: %s programmer uses stk500_chip_erase() but does not\n"
"provide a cmd() method.\n",
progname, pgm->type);
return -1;
}
if (p->op[AVR_OP_CHIP_ERASE] == NULL) {
fprintf(stderr, "chip erase instruction not defined for part \"%s\"\n",
p->desc);
@@ -1236,6 +1244,8 @@ void stk500_initpgm(PROGRAMMER * pgm)
pgm->cmd = stk500_cmd;
pgm->open = stk500_open;
pgm->close = stk500_close;
pgm->read_byte = avr_read_byte_default;
pgm->write_byte = avr_write_byte_default;
/*
* optional functions