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Submitted by Andrew O. Shadoura:

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bug #25156: add direct SPI transfer mode
* bitbang.c: Implement direct SPI transfers.
* bitbang.h: (Ditto.)
* par.c: (Ditto.)
* pgm.c: (Ditto.)
* pgm.h: (Ditto.)
* term.c: Add the "spi" and "pgm" commands.
* avrdude.1: Document the changes.
* doc/avrdude.texi: (Ditto.)


git-svn-id: svn://svn.savannah.nongnu.org/avrdude/trunk/avrdude@797 81a1dc3b-b13d-400b-aceb-764788c761c2
This commit is contained in:
joerg_wunsch
2009-02-17 15:31:27 +00:00
parent 82ae3b3eda
commit 3815878ed1
10 changed files with 114 additions and 8 deletions
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33
bitbang.c
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@@ -225,6 +225,39 @@ int bitbang_cmd(PROGRAMMER * pgm, unsigned char cmd[4],
return 0;
}
/*
* transmit bytes via SPI and return the results; 'cmd' and
* 'res' must point to data buffers
*/
int bitbang_spi(PROGRAMMER * pgm, unsigned char cmd[],
unsigned char res[], int count)
{
int i;
pgm->setpin(pgm, pgm->pinno[PIN_LED_PGM], 0);
for (i=0; i<count; i++) {
res[i] = bitbang_txrx(pgm, cmd[i]);
}
pgm->setpin(pgm, pgm->pinno[PIN_LED_PGM], 1);
if(verbose >= 2)
{
fprintf(stderr, "bitbang_cmd(): [ ");
for(i = 0; i < count; i++)
fprintf(stderr, "%02X ", cmd[i]);
fprintf(stderr, "] [ ");
for(i = 0; i < count; i++)
{
fprintf(stderr, "%02X ", res[i]);
}
fprintf(stderr, "]\n");
}
return 0;
}
/*
* issue the 'chip erase' command to the AVR device