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Submitted by Andrew O. Shadoura: 

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@797 81a1dc3b-b13d-400b-aceb-764788c761c2
This commit is contained in:
Joerg Wunsch 2009-02-17 15:31:27 +00:00
parent 39ac828213
commit 98aa7dbb5a
10 changed files with 114 additions and 8 deletions
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13
avrdude/ChangeLog
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@ -1,3 +1,16 @@
2009-02-17 Joerg Wunsch <j.gnu@uriah.heep.sax.de>
Submitted by Andrew O. Shadoura:
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.)
2009-02-17 Joerg Wunsch <j.gnu@uriah.heep.sax.de>
Submitted by Limor ("Lady Ada"):

2
avrdude/NEWS
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@ -49,6 +49,8 @@ Current:
* Add preliminary support for ATxmega128A1 for the JTAG ICE mkII using
JTAG.
* Add support for direct SPI transfers (bug #25156).
* Bugfixes.
Version 5.5:

12
avrdude/avrdude.1
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@ -1,6 +1,6 @@
.\"
.\" avrdude - A Downloader/Uploader for AVR device programmers
.\" Copyright (C) 2001, 2002, 2003, 2005, 2006, 2007, 2008 Joerg Wunsch
.\" Copyright (C) 2001, 2002, 2003, 2005 - 2009 Joerg Wunsch
.\"
.\" This program is free software; you can redistribute it and/or modify
.\" it under the terms of the GNU General Public License as published by
@ -679,13 +679,21 @@ feature of an AVR part that is not directly supported by
.Nm ,
this command allows you to use it, even though
.Nm
does not implement the command.
does not implement the command. When using direct SPI mode, up to 3 bytes
can be omitted.
.It Ar sig
Display the device signature bytes.
.It Ar spi
Enter direct SPI mode. The
.Em pgmled
pin acts as slave select.
.Em Only supported on parallel bitbang programmers.
.It Ar part
Display the current part settings and parameters. Includes chip
specific information including all memory types supported by the
device, read/write timing, etc.
.It Ar pgm
Return to programming mode (from direct SPI mode).
.It Ar vtarg voltage
Set the target's supply voltage to
.Ar voltage

33
avrdude/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

2
avrdude/bitbang.h
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@ -39,6 +39,8 @@ int bitbang_pgm_led (PROGRAMMER * pgm, int value);
int bitbang_vfy_led (PROGRAMMER * pgm, int value);
int bitbang_cmd (PROGRAMMER * pgm, unsigned char cmd[4],
unsigned char res[4]);
int bitbang_spi (PROGRAMMER * pgm, unsigned char cmd[],
unsigned char res[], int count);
int bitbang_chip_erase (PROGRAMMER * pgm, AVRPART * p);
int bitbang_program_enable (PROGRAMMER * pgm, AVRPART * p);
void bitbang_powerup (PROGRAMMER * pgm);

12
avrdude/doc/avrdude.texi
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@ -30,7 +30,7 @@ For avrdude version @value{VERSION}, @value{UPDATED}.
Copyright @copyright{} 2003, 2005 Brian Dean
Copyright @copyright{} 2006 - 2008 J@"org Wunsch
Copyright @copyright{} 2006 - 2009 J@"org Wunsch
Permission is granted to make and distribute verbatim copies of
this manual provided the copyright notice and this permission notice
@ -1066,16 +1066,24 @@ Perform a chip erase.
Send raw instruction codes to the AVR device. If you need access to a
feature of an AVR part that is not directly supported by AVRDUDE, this
command allows you to use it, even though AVRDUDE does not implement the
command.
command. When using direct SPI mode, up to 3 bytes
can be omitted.
@item sig
Display the device signature bytes.
@item spi
Enter direct SPI mode. The @emph{pgmled} pin acts as slave select.
@emph{Only supported on parallel bitbang programmers.}
@item part
Display the current part settings and parameters. Includes chip
specific information including all memory types supported by the
device, read/write timing, etc.
@item pgm
Return to programming mode (from direct SPI mode).
@item ?
@itemx help
Give a short on-line summary of the available commands.

1
avrdude/par.c
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@ -416,6 +416,7 @@ void par_initpgm(PROGRAMMER * pgm)
pgm->program_enable = bitbang_program_enable;
pgm->chip_erase = bitbang_chip_erase;
pgm->cmd = bitbang_cmd;
pgm->spi = bitbang_spi;
pgm->open = par_open;
pgm->close = par_close;
pgm->setpin = par_setpin;

1
avrdude/pgm.c
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@ -118,6 +118,7 @@ PROGRAMMER * pgm_new(void)
* assigned before they are called
*/
pgm->cmd = NULL;
pgm->spi = NULL;
pgm->paged_write = NULL;
pgm->paged_load = NULL;
pgm->write_setup = NULL;

2
avrdude/pgm.h
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@ -78,6 +78,8 @@ typedef struct programmer_t {
int (*chip_erase) (struct programmer_t * pgm, AVRPART * p);
int (*cmd) (struct programmer_t * pgm, unsigned char cmd[4],
unsigned char res[4]);
int (*spi) (struct programmer_t * pgm, unsigned char cmd[],
unsigned char res[], int count);
int (*open) (struct programmer_t * pgm, char * port);
void (*close) (struct programmer_t * pgm);
int (*paged_write) (struct programmer_t * pgm, AVRPART * p, AVRMEM * m,

44
avrdude/term.c
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@ -88,6 +88,11 @@ static int cmd_fosc (PROGRAMMER * pgm, struct avrpart * p,
static int cmd_sck (PROGRAMMER * pgm, struct avrpart * p,
int argc, char *argv[]);
static int cmd_spi (PROGRAMMER * pgm, struct avrpart * p,
int argc, char *argv[]);
static int cmd_pgm (PROGRAMMER * pgm, struct avrpart * p,
int argc, char *argv[]);
struct command cmd[] = {
{ "dump", cmd_dump, "dump memory : %s <memtype> <addr> <N-Bytes>" },
@ -102,6 +107,8 @@ struct command cmd[] = {
{ "varef", cmd_varef, "set <V[aref]> (STK500 only)" },
{ "fosc", cmd_fosc, "set <oscillator frequency> (STK500 only)" },
{ "sck", cmd_sck, "set <SCK period> (STK500 only)" },
{ "spi", cmd_spi, "enter direct SPI mode" },
{ "pgm", cmd_pgm, "return to programming mode" },
{ "help", cmd_help, "help" },
{ "?", cmd_help, "help" },
{ "quit", cmd_quit, "quit" }
@ -111,7 +118,7 @@ struct command cmd[] = {
static int spi_mode = 0;
static int nexttok(char * buf, char ** tok, char ** next)
{
@ -445,8 +452,18 @@ static int cmd_send(PROGRAMMER * pgm, struct avrpart * p,
return -1;
}
if (argc != 5) {
fprintf(stderr, "Usage: send <byte1> <byte2> <byte3> <byte4>\n");
if (spi_mode && (pgm->spi == NULL)) {
fprintf(stderr,
"The %s programmer does not support direct SPI transfers.\n",
pgm->type);
return -1;
}
if ((argc > 5) || ((argc < 5) && (!spi_mode))) {
fprintf(stderr, spi_mode?
"Usage: send <byte1> [<byte2> [<byte3> [<byte4>]]]\n":
"Usage: send <byte1> <byte2> <byte3> <byte4>\n");
return -1;
}
@ -465,7 +482,10 @@ static int cmd_send(PROGRAMMER * pgm, struct avrpart * p,
pgm->err_led(pgm, OFF);
pgm->cmd(pgm, cmd, res);
if (spi_mode)
pgm->spi(pgm, cmd, res, argc-1);
else
pgm->cmd(pgm, cmd, res);
/*
* display results
@ -724,6 +744,22 @@ static int cmd_help(PROGRAMMER * pgm, struct avrpart * p,
return 0;
}
static int cmd_spi(PROGRAMMER * pgm, struct avrpart * p,
int argc, char * argv[])
{
pgm->setpin(pgm, pgm->pinno[PIN_AVR_RESET], 1);
spi_mode = 1;
return 0;
}
static int cmd_pgm(PROGRAMMER * pgm, struct avrpart * p,
int argc, char * argv[])
{
pgm->setpin(pgm, pgm->pinno[PIN_AVR_RESET], 0);
spi_mode = 0;
pgm->initialize(pgm, p);
return 0;
}
static int tokenize(char * s, char *** argv)
{