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avrdude
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Split higher level parallel port programmer code off from ppi.c into 

its own file par.c, leaving low level parallel port accessor routines
in ppi.c to help with portability.  Change the programmer type to
'PAR' now instead of 'PPI' - 'PAR' represents the parallel port
programmer type.

Be more liberal with 'static' function declarations within the
programmer implimentation files - these functions should never be
called directly - always use the programmer function references.

There are still a few places in 'main.c' that directly reference the
parallel programmer explicitly (par_getpinmask).  These should be
fixed somehow.

Axe a few unused functions.


git-svn-id: svn://svn.savannah.nongnu.org/avrdude/trunk/avrdude@190 81a1dc3b-b13d-400b-aceb-764788c761c2
This commit is contained in:
Brian S. Dean 2003-02-13 19:27:50 +00:00
parent 56cf90a2d2
commit 46233d2241
10 changed files with 717 additions and 698 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
Makefile
View File

@ -47,11 +47,11 @@ LIBS = -lreadline
YYDEF = -DYYSTYPE="struct token_t *"
SRCS = config_gram.c avr.c config.c fileio.c lexer.c lists.c main.c pgm.c \
ppi.c stk500.c term.c
SRCS = config_gram.c avr.c config.c fileio.c lexer.c lists.c main.c par.c \
pgm.c ppi.c stk500.c term.c
OBJS = config_gram.o avr.o config.o fileio.o lexer.o lists.o main.o pgm.o \
ppi.o stk500.o term.o
OBJS = config_gram.o avr.o config.o fileio.o lexer.o lists.o main.o par.o \
pgm.o ppi.o stk500.o term.o
all : depend ${TARGET}

10
avrdude.conf.sample
View File

@ -15,7 +15,7 @@
# programmer
# id = <id1> [, <id2> [, <id3>] ...] ; # <idN> are quoted strings
# desc = <description> ; # quoted string
# type = ppi | stk500 ; # programmer type
# type = par | stk500 ; # programmer type
# vcc = <num1> [, <num2> ... ] ; # pin number(s)
# reset = <num> ; # pin number
# sck = <num> ; # pin number
@ -172,7 +172,7 @@
programmer
id = "bsd", "default";
desc = "Brian Dean's Programmer";
type = ppi;
type = par;
vcc = 2, 3, 4, 5;
reset = 7;
sck = 8;
@ -189,7 +189,7 @@ programmer
programmer
id = "stk200";
desc = "STK200";
type = ppi;
type = par;
buff = 4, 5;
sck = 6;
mosi = 7;
@ -200,7 +200,7 @@ programmer
programmer
id = "dt006";
desc = "Dontronics DT006";
type = ppi;
type = par;
reset = 4;
sck = 5;
mosi = 2;
@ -210,7 +210,7 @@ programmer
programmer
id = "alf";
desc = "Tony Friebel's Programmer";
type = ppi;
type = par;
vcc = 2, 3, 4, 5;
buff = 6;
reset = 7;

7
config_gram.y
View File

@ -26,6 +26,7 @@
#include "config.h"
#include "lists.h"
#include "par.h"
#include "pindefs.h"
#include "ppi.h"
#include "pgm.h"
@ -73,9 +74,9 @@ static int parse_cmdbits(OPCODE * op);
%token K_MISO
%token K_MOSI
%token K_NUM_PAGES
%token K_PAR
%token K_PART
%token K_PGMLED
%token K_PPI
%token K_PROGRAMMER
%token K_PWROFF_AFTER_WRITE
%token K_RDYLED
@ -228,9 +229,9 @@ prog_parm :
}
} |
K_TYPE TKN_EQUAL K_PPI {
K_TYPE TKN_EQUAL K_PAR {
{
ppi_initpgm(current_prog);
par_initpgm(current_prog);
}
} |

2
lexer.l
View File

@ -135,7 +135,7 @@ page_size { yylval=NULL; return K_PAGE_SIZE; }
paged { yylval=NULL; return K_PAGED; }
part { yylval=NULL; return K_PART; }
pgmled { yylval=NULL; return K_PGMLED; }
ppi { yylval=NULL; return K_PPI; }
par { yylval=NULL; return K_PAR; }
programmer { yylval=NULL; return K_PROGRAMMER; }
pwroff_after_write { yylval=NULL; return K_PWROFF_AFTER_WRITE; }
rdyled { yylval=NULL; return K_RDYLED; }

7
main.c
View File

@ -78,6 +78,7 @@
#include "avr.h"
#include "config.h"
#include "fileio.h"
#include "par.h"
#include "pindefs.h"
#include "ppi.h"
#include "term.h"
@ -128,10 +129,10 @@ int getexitspecs(char *s, int *set, int *clr)
while ((cp = strtok(s, ","))) {
if (strcmp(cp, "reset") == 0) {
*clr |= ppi_getpinmask(pgm->pinno[PIN_AVR_RESET]);
*clr |= par_getpinmask(pgm->pinno[PIN_AVR_RESET]);
}
else if (strcmp(cp, "noreset") == 0) {
*set |= ppi_getpinmask(pgm->pinno[PIN_AVR_RESET]);
*set |= par_getpinmask(pgm->pinno[PIN_AVR_RESET]);
}
else if (strcmp(cp, "vcc") == 0) {
if (pgm->pinno[PPI_AVR_VCC])
@ -341,7 +342,7 @@ int main(int argc, char * argv [])
*/
compiled_in_pgm = pgm_new();
pgm = compiled_in_pgm;
ppi_initpgm(pgm);
par_initpgm(pgm);
ladd(pgm->id, dup_string("avrdude"));
strcpy(pgm->desc, "avrdude compiled-in default");
pgm->pinno[PPI_AVR_VCC] = 0x0f; /* ppi pins 2-5, data reg bits 0-3 */

602
par.c Normal file
View File

@ -0,0 +1,602 @@
/*
* avrdude - A Downloader/Uploader for AVR device programmers
* Copyright (C) 2000, 2001, 2002, 2003 Brian S. Dean <bsd@bsdhome.com>
*
* 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
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/* $Id$ */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <fcntl.h>
#include <unistd.h>
#include <errno.h>
#if defined(__FreeBSD__)
#include <dev/ppbus/ppi.h>
#elif defined(__linux__)
#include "linux_ppdev.h"
#endif
#include "avr.h"
#include "pindefs.h"
#include "pgm.h"
#include "par.h"
#include "ppi.h"
#define SLOW_TOGGLE 0
struct ppipins_t {
int pin;
int reg;
int bit;
int inverted;
};
static struct ppipins_t pins[] = {
{ 1, PPICTRL, 0x01, 1 },
{ 2, PPIDATA, 0x01, 0 },
{ 3, PPIDATA, 0x02, 0 },
{ 4, PPIDATA, 0x04, 0 },
{ 5, PPIDATA, 0x08, 0 },
{ 6, PPIDATA, 0x10, 0 },
{ 7, PPIDATA, 0x20, 0 },
{ 8, PPIDATA, 0x40, 0 },
{ 9, PPIDATA, 0x80, 0 },
{ 10, PPISTATUS, 0x40, 0 },
{ 11, PPISTATUS, 0x80, 1 },
{ 12, PPISTATUS, 0x20, 0 },
{ 13, PPISTATUS, 0x10, 0 },
{ 14, PPICTRL, 0x02, 1 },
{ 15, PPISTATUS, 0x08, 0 },
{ 16, PPICTRL, 0x04, 0 },
{ 17, PPICTRL, 0x08, 1 }
};
#define NPINS (sizeof(pins)/sizeof(struct ppipins_t))
extern char * progname;
extern int do_cycles;
static int par_setpin (int fd, int pin, int value);
static int par_getpin (int fd, int pin);
static int par_pulsepin (int fd, int pin);
static int par_rdy_led (PROGRAMMER * pgm, int value);
static int par_err_led (PROGRAMMER * pgm, int value);
static int par_pgm_led (PROGRAMMER * pgm, int value);
static int par_vfy_led (PROGRAMMER * pgm, int value);
static int par_cmd (PROGRAMMER * pgm, unsigned char cmd[4],
unsigned char res[4]);
static int par_chip_erase (PROGRAMMER * pgm, AVRPART * p);
static int par_program_enable (PROGRAMMER * pgm, AVRPART * p);
static void par_powerup (PROGRAMMER * pgm);
static void par_powerdown (PROGRAMMER * pgm);
static int par_initialize (PROGRAMMER * pgm, AVRPART * p);
static int par_save (PROGRAMMER * pgm);
static void par_restore (PROGRAMMER * pgm);
static void par_disable (PROGRAMMER * pgm);
static void par_enable (PROGRAMMER * pgm);
static void par_open (PROGRAMMER * pgm, char * port);
static void par_close (PROGRAMMER * pgm);
static int par_setpin(int fd, int pin, int value)
{
if (pin < 1 || pin > 17)
return -1;
pin--;
if (pins[pin].inverted)
value = !value;
if (value)
ppi_set(fd, pins[pin].reg, pins[pin].bit);
else
ppi_clr(fd, pins[pin].reg, pins[pin].bit);
#if SLOW_TOGGLE
usleep(1000);
#endif
return 0;
}
static int par_getpin(int fd, int pin)
{
int value;
if (pin < 1 || pin > 17)
return -1;
pin--;
value = ppi_get(fd, pins[pin].reg, pins[pin].bit);
if (value)
value = 1;
if (pins[pin].inverted)
value = !value;
return value;
}
static int par_pulsepin(int fd, int pin)
{
if (pin < 1 || pin > 17)
return -1;
pin--;
ppi_toggle(fd, pins[pin].reg, pins[pin].bit);
#if SLOW_TOGGLE
usleep(1000);
#endif
ppi_toggle(fd, pins[pin].reg, pins[pin].bit);
#if SLOW_TOGGLE
usleep(1000);
#endif
return 0;
}
int par_getpinmask(int pin)
{
if (pin < 1 || pin > 17)
return -1;
return pins[pin-1].bit;
}
static char vccpins_buf[64];
static char * vccpins_str(unsigned int pmask)
{
unsigned int mask;
int pin;
char b2[8];
char * b;
b = vccpins_buf;
b[0] = 0;
for (pin = 2, mask = 1; mask < 0x80; mask = mask << 1, pin++) {
if (pmask & mask) {
sprintf(b2, "%d", pin);
if (b[0] != 0)
strcat(b, ",");
strcat(b, b2);
}
}
return b;
}
/*
* transmit and receive a byte of data to/from the AVR device
*/
static unsigned char par_txrx(PROGRAMMER * pgm, unsigned char byte)
{
int i;
unsigned char r, b, rbyte;
rbyte = 0;
for (i=0; i<8; i++) {
b = (byte >> (7-i)) & 0x01;
/*
* read the result bit (it is either valid from a previous clock
* pulse or it is ignored in the current context)
*/
r = par_getpin(pgm->fd, pgm->pinno[PIN_AVR_MISO]);
/* set the data input line as desired */
par_setpin(pgm->fd, pgm->pinno[PIN_AVR_MOSI], b);
/*
* pulse the clock line, clocking in the MOSI data, and clocking out
* the next result bit
*/
par_pulsepin(pgm->fd, pgm->pinno[PIN_AVR_SCK]);
rbyte = rbyte | (r << (7-i));
}
return rbyte;
}
static int par_rdy_led(PROGRAMMER * pgm, int value)
{
par_setpin(pgm->fd, pgm->pinno[PIN_LED_RDY], !value);
return 0;
}
static int par_err_led(PROGRAMMER * pgm, int value)
{
par_setpin(pgm->fd, pgm->pinno[PIN_LED_ERR], !value);
return 0;
}
static int par_pgm_led(PROGRAMMER * pgm, int value)
{
par_setpin(pgm->fd, pgm->pinno[PIN_LED_PGM], !value);
return 0;
}
static int par_vfy_led(PROGRAMMER * pgm, int value)
{
par_setpin(pgm->fd, pgm->pinno[PIN_LED_VFY], !value);
return 0;
}
/*
* transmit an AVR device command and return the results; 'cmd' and
* 'res' must point to at least a 4 byte data buffer
*/
static int par_cmd(PROGRAMMER * pgm, unsigned char cmd[4],
unsigned char res[4])
{
int i;
for (i=0; i<4; i++) {
res[i] = par_txrx(pgm, cmd[i]);
}
#if 0
fprintf(stderr, "avr_cmd(): [ ");
for (i=0; i<4; i++)
fprintf(stderr, "%02x ", cmd[i]);
fprintf(stderr, "] [ ");
for (i=0; i<4; i++)
fprintf(stderr, "%02x ", res[i]);
fprintf(stderr, "]\n");
#endif
return 0;
}
/*
* issue the 'chip erase' command to the AVR device
*/
static int par_chip_erase(PROGRAMMER * pgm, AVRPART * p)
{
unsigned char cmd[4];
unsigned char res[4];
int cycles;
int rc;
if (p->op[AVR_OP_CHIP_ERASE] == NULL) {
fprintf(stderr, "chip erase instruction not defined for part \"%s\"\n",
p->desc);
return -1;
}
rc = avr_get_cycle_count(pgm, p, &cycles);
/*
* only print out the current cycle count if we aren't going to
* display it below
*/
if (!do_cycles && ((rc >= 0) && (cycles != 0xffffffff))) {
fprintf(stderr,
"%s: current erase-rewrite cycle count is %d%s\n",
progname, cycles,
do_cycles ? "" : " (if being tracked)");
}
pgm->pgm_led(pgm, ON);
memset(cmd, 0, sizeof(cmd));
avr_set_bits(p->op[AVR_OP_CHIP_ERASE], cmd);
pgm->cmd(pgm, cmd, res);
usleep(p->chip_erase_delay);
pgm->initialize(pgm, p);
pgm->pgm_led(pgm, OFF);
if (do_cycles && (cycles != -1)) {
if (cycles == 0x00ffff) {
cycles = 0;
}
cycles++;
fprintf(stderr, "%s: erase-rewrite cycle count is now %d\n",
progname, cycles);
avr_put_cycle_count(pgm, p, cycles);
}
return 0;
}
/*
* issue the 'program enable' command to the AVR device
*/
static int par_program_enable(PROGRAMMER * pgm, AVRPART * p)
{
unsigned char cmd[4];
unsigned char res[4];
if (p->op[AVR_OP_PGM_ENABLE] == NULL) {
fprintf(stderr, "program enable instruction not defined for part \"%s\"\n",
p->desc);
return -1;
}
memset(cmd, 0, sizeof(cmd));
avr_set_bits(p->op[AVR_OP_PGM_ENABLE], cmd);
pgm->cmd(pgm, cmd, res);
if (res[2] != cmd[1])
return -2;
return 0;
}
/*
* apply power to the AVR processor
*/
static void par_powerup(PROGRAMMER * pgm)
{
ppi_set(pgm->fd, PPIDATA, pgm->pinno[PPI_AVR_VCC]); /* power up */
usleep(100000);
}
/*
* remove power from the AVR processor
*/
static void par_powerdown(PROGRAMMER * pgm)
{
ppi_clr(pgm->fd, PPIDATA, pgm->pinno[PPI_AVR_VCC]); /* power down */
}
/*
* initialize the AVR device and prepare it to accept commands
*/
static int par_initialize(PROGRAMMER * pgm, AVRPART * p)
{
int rc;
int tries;
pgm->powerup(pgm);
usleep(20000);
par_setpin(pgm->fd, pgm->pinno[PIN_AVR_SCK], 0);
par_setpin(pgm->fd, pgm->pinno[PIN_AVR_RESET], 0);
usleep(20000);
par_pulsepin(pgm->fd, pgm->pinno[PIN_AVR_RESET]);
usleep(20000); /* 20 ms XXX should be a per-chip parameter */
/*
* Enable programming mode. If we are programming an AT90S1200, we
* can only issue the command and hope it worked. If we are using
* one of the other chips, the chip will echo 0x53 when issuing the
* third byte of the command. In this case, try up to 32 times in
* order to possibly get back into sync with the chip if we are out
* of sync.
*/
if (strcmp(p->desc, "AT90S1200")==0) {
pgm->program_enable(pgm, p);
}
else {
tries = 0;
do {
rc = pgm->program_enable(pgm, p);
if ((rc == 0)||(rc == -1))
break;
par_pulsepin(pgm->fd, pgm->pinno[PIN_AVR_SCK]);
tries++;
} while (tries < 65);
/*
* can't sync with the device, maybe it's not attached?
*/
if (rc) {
fprintf(stderr, "%s: AVR device not responding\n", progname);
return -1;
}
}
return 0;
}
static int par_save(PROGRAMMER * pgm)
{
int rc;
rc = ppi_getall(pgm->fd, PPIDATA);
if (rc < 0) {
fprintf(stderr, "%s: error reading status of ppi data port\n", progname);
return -1;
}
pgm->ppidata = rc;
return 0;
}
static void par_restore(PROGRAMMER * pgm)
{
ppi_setall(pgm->fd, PPIDATA, pgm->ppidata);
}
static void par_disable(PROGRAMMER * pgm)
{
ppi_set(pgm->fd, PPIDATA, pgm->pinno[PPI_AVR_BUFF]);
}
static void par_enable(PROGRAMMER * pgm)
{
/*
* Prepare to start talking to the connected device - pull reset low
* first, delay a few milliseconds, then enable the buffer. This
* sequence allows the AVR to be reset before the buffer is enabled
* to avoid a short period of time where the AVR may be driving the
* programming lines at the same time the programmer tries to. Of
* course, if a buffer is being used, then the /RESET line from the
* programmer needs to be directly connected to the AVR /RESET line
* and not via the buffer chip.
*/
par_setpin(pgm->fd, pgm->pinno[PIN_AVR_RESET], 0);
usleep(1);
/*
* enable the 74367 buffer, if connected; this signal is active low
*/
ppi_clr(pgm->fd, PPIDATA, pgm->pinno[PPI_AVR_BUFF]);
}
static void par_open(PROGRAMMER * pgm, char * port)
{
pgm->fd = ppi_open(port);
if (pgm->fd < 0) {
fprintf(stderr, "%s: failed to open parallel port \"%s\"\n\n",
progname, port);
exit(1);
}
ppi_claim(pgm);
}
static void par_close(PROGRAMMER * pgm)
{
ppi_release(pgm);
ppi_close(pgm->fd);
pgm->fd = -1;
}
static void par_display(PROGRAMMER * pgm, char * p)
{
char vccpins[64];
char buffpins[64];
if (pgm->pinno[PPI_AVR_VCC]) {
snprintf(vccpins, sizeof(vccpins), " = pins %s",
vccpins_str(pgm->pinno[PPI_AVR_VCC]));
}
else {
strcpy(vccpins, " (not used)");
}
if (pgm->pinno[PPI_AVR_BUFF]) {
snprintf(buffpins, sizeof(buffpins), " = pins %s",
vccpins_str(pgm->pinno[PPI_AVR_BUFF]));
}
else {
strcpy(buffpins, " (not used)");
}
fprintf(stderr, "%sProgrammer Pin Configuration: %s (%s)\n", p,
(char *)ldata(lfirst(pgm->id)), pgm->desc);
fprintf(stderr,
"%s VCC = 0x%02x%s\n"
"%s BUFF = 0x%02x%s\n"
"%s RESET = %d\n"
"%s SCK = %d\n"
"%s MOSI = %d\n"
"%s MISO = %d\n"
"%s ERR LED = %d\n"
"%s RDY LED = %d\n"
"%s PGM LED = %d\n"
"%s VFY LED = %d\n",
p, pgm->pinno[PPI_AVR_VCC], vccpins,
p, pgm->pinno[PPI_AVR_BUFF], buffpins,
p, pgm->pinno[PIN_AVR_RESET],
p, pgm->pinno[PIN_AVR_SCK],
p, pgm->pinno[PIN_AVR_MOSI],
p, pgm->pinno[PIN_AVR_MISO],
p, pgm->pinno[PIN_LED_ERR],
p, pgm->pinno[PIN_LED_RDY],
p, pgm->pinno[PIN_LED_PGM],
p, pgm->pinno[PIN_LED_VFY]);
}
void par_initpgm(PROGRAMMER * pgm)
{
strcpy(pgm->type, "PPI");
pgm->rdy_led = par_rdy_led;
pgm->err_led = par_err_led;
pgm->pgm_led = par_pgm_led;
pgm->vfy_led = par_vfy_led;
pgm->initialize = par_initialize;
pgm->display = par_display;
pgm->save = par_save;
pgm->restore = par_restore;
pgm->enable = par_enable;
pgm->disable = par_disable;
pgm->powerup = par_powerup;
pgm->powerdown = par_powerdown;
pgm->program_enable = par_program_enable;
pgm->chip_erase = par_chip_erase;
pgm->cmd = par_cmd;
pgm->open = par_open;
pgm->close = par_close;
}

33
par.h Normal file
View File

@ -0,0 +1,33 @@
/*
* avrdude - A Downloader/Uploader for AVR device programmers
* Copyright (C) 2000, 2001, 2002, 2003 Brian S. Dean <bsd@bsdhome.com>
*
* 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
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/* $Id$ */
#ifndef __par_h__
#define __par_h__
#include "config.h"
void par_initpgm (PROGRAMMER * pgm);
int par_getpinmask(int pin);
#endif

668
ppi.c
View File

@ -19,6 +19,8 @@
/* $Id$ */
#if defined(__FreeBSD__) || defined(__linux__)
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
@ -37,147 +39,13 @@
#include "pgm.h"
#include "ppi.h"
#define SLOW_TOGGLE 0
extern char * progname;
extern int do_cycles;
/*
* PPI registers
*/
enum {
PPIDATA,
PPICTRL,
PPISTATUS
};
struct ppipins_t {
int pin;
int reg;
int bit;
int inverted;
};
static struct ppipins_t pins[] = {
{ 1, PPICTRL, 0x01, 1 },
{ 2, PPIDATA, 0x01, 0 },
{ 3, PPIDATA, 0x02, 0 },
{ 4, PPIDATA, 0x04, 0 },
{ 5, PPIDATA, 0x08, 0 },
{ 6, PPIDATA, 0x10, 0 },
{ 7, PPIDATA, 0x20, 0 },
{ 8, PPIDATA, 0x40, 0 },
{ 9, PPIDATA, 0x80, 0 },
{ 10, PPISTATUS, 0x40, 0 },
{ 11, PPISTATUS, 0x80, 1 },
{ 12, PPISTATUS, 0x20, 0 },
{ 13, PPISTATUS, 0x10, 0 },
{ 14, PPICTRL, 0x02, 1 },
{ 15, PPISTATUS, 0x08, 0 },
{ 16, PPICTRL, 0x04, 0 },
{ 17, PPICTRL, 0x08, 1 }
};
#define NPINS (sizeof(pins)/sizeof(struct ppipins_t))
int ppi_getops (int reg, unsigned long * get, unsigned long * set);
int ppi_set (int fd, int reg, int bit);
int ppi_clr (int fd, int reg, int bit);
int ppi_get (int fd, int reg, int bit);
int ppi_toggle (int fd, int reg, int bit);
int ppi_getall (int fd, int reg);
int ppi_setall (int fd, int reg, int val);
int ppi_pulse (int fd, int reg, int bit);
int ppi_setpin (int fd, int pin, int value);
int ppi_getpin (int fd, int pin);
int ppi_pulsepin (int fd, int pin);
int ppi_getpinreg (int pin);
int ppi_sense (int fd);
int ppi_rdy_led (PROGRAMMER * pgm, int value);
int ppi_err_led (PROGRAMMER * pgm, int value);
int ppi_pgm_led (PROGRAMMER * pgm, int value);
int ppi_vfy_led (PROGRAMMER * pgm, int value);
int ppi_cmd (PROGRAMMER * pgm, unsigned char cmd[4],
unsigned char res[4]);
int ppi_chip_erase (PROGRAMMER * pgm, AVRPART * p);
int ppi_program_enable (PROGRAMMER * pgm, AVRPART * p);
void ppi_powerup (PROGRAMMER * pgm);
void ppi_powerdown (PROGRAMMER * pgm);
int ppi_initialize (PROGRAMMER * pgm, AVRPART * p);
int ppi_save (PROGRAMMER * pgm);
void ppi_restore (PROGRAMMER * pgm);
void ppi_disable (PROGRAMMER * pgm);
void ppi_enable (PROGRAMMER * pgm);
void ppi_open (PROGRAMMER * pgm, char * port);
void ppi_close (PROGRAMMER * pgm);
static char vccpins_buf[64];
char * vccpins_str(unsigned int pmask)
{
unsigned int mask;
int pin;
char b2[8];
char * b;
b = vccpins_buf;
b[0] = 0;
for (pin = 2, mask = 1; mask < 0x80; mask = mask << 1, pin++) {
if (pmask & mask) {
sprintf(b2, "%d", pin);
if (b[0] != 0)
strcat(b, ",");
strcat(b, b2);
}
}
return b;
}
/*
* set 'get' and 'set' appropriately for subsequent passage to ioctl()
* to get/set the specified PPI registers.
*/
int ppi_getops(int reg, unsigned long * get, unsigned long * set)
static int ppi_getops(int reg, unsigned long * get, unsigned long * set)
{
switch (reg) {
case PPIDATA:
@ -322,534 +190,26 @@ int ppi_setall(int fd, int reg, int val)
return 0;
}
/*
* pulse the indicated bit of the specified register.
*/
int ppi_pulse(int fd, int reg, int bit)
int ppi_open(char * port)
{
ppi_toggle(fd, reg, bit);
int fd;
#if SLOW_TOGGLE
usleep(1000);
#endif
ppi_toggle(fd, reg, bit);
#if SLOW_TOGGLE
usleep(1000);
#endif
return 0;
}
int ppi_setpin(int fd, int pin, int value)
{
if (pin < 1 || pin > 17)
return -1;
pin--;
if (pins[pin].inverted)
value = !value;
if (value)
ppi_set(fd, pins[pin].reg, pins[pin].bit);
else
ppi_clr(fd, pins[pin].reg, pins[pin].bit);
#if SLOW_TOGGLE
usleep(1000);
#endif
return 0;
}
int ppi_getpin(int fd, int pin)
{
int value;
if (pin < 1 || pin > 17)
return -1;
pin--;
value = ppi_get(fd, pins[pin].reg, pins[pin].bit);
if (value)
value = 1;
if (pins[pin].inverted)
value = !value;
return value;
}
int ppi_pulsepin(int fd, int pin)
{
if (pin < 1 || pin > 17)
return -1;
pin--;
ppi_toggle(fd, pins[pin].reg, pins[pin].bit);
#if SLOW_TOGGLE
usleep(1000);
#endif
ppi_toggle(fd, pins[pin].reg, pins[pin].bit);
#if SLOW_TOGGLE
usleep(1000);
#endif
return 0;
}
int ppi_getpinmask(int pin)
{
if (pin < 1 || pin > 17)
return -1;
return pins[pin-1].bit;
}
int ppi_getpinreg(int pin)
{
if (pin < 1 || pin > 17)
return -1;
return pins[pin-1].reg;
}
/*
* infinite loop, sensing on the pin that we use to read data out of
* the device; this is a debugging aid, you can insert a call to this
* function in 'main()' and can use it to determine whether your sense
* pin is actually sensing.
*/
int ppi_sense(int fd)
{
unsigned int pr;
int count;
char buf[128];
int i;
count = 0;
fprintf(stderr,
"parallel port data:\n"
" 111111111\n"
"123456789012345678\n");
buf[17] = 0;
pr = 1;
do {
usleep(1); /* don't be too much of a cpu hog */
for (i=1; i<=17; i++) {
buf[i-1] = ppi_getpin(fd, i);
if (buf[i-1])
buf[i-1] = '|';
else
buf[i-1] = '.';
}
fprintf(stderr, "\r \r%s", buf);
} while(1);
return 0;
}
/*
* transmit and receive a byte of data to/from the AVR device
*/
unsigned char ppi_txrx(PROGRAMMER * pgm, unsigned char byte)
{
int i;
unsigned char r, b, rbyte;
rbyte = 0;
for (i=0; i<8; i++) {
b = (byte >> (7-i)) & 0x01;
/*
* read the result bit (it is either valid from a previous clock
* pulse or it is ignored in the current context)
*/
r = ppi_getpin(pgm->fd, pgm->pinno[PIN_AVR_MISO]);
/* set the data input line as desired */
ppi_setpin(pgm->fd, pgm->pinno[PIN_AVR_MOSI], b);
/*
* pulse the clock line, clocking in the MOSI data, and clocking out
* the next result bit
*/
ppi_pulsepin(pgm->fd, pgm->pinno[PIN_AVR_SCK]);
rbyte = rbyte | (r << (7-i));
}
return rbyte;
}
int ppi_rdy_led(PROGRAMMER * pgm, int value)
{
ppi_setpin(pgm->fd, pgm->pinno[PIN_LED_RDY], !value);
return 0;
}
int ppi_err_led(PROGRAMMER * pgm, int value)
{
ppi_setpin(pgm->fd, pgm->pinno[PIN_LED_ERR], !value);
return 0;
}
int ppi_pgm_led(PROGRAMMER * pgm, int value)
{
ppi_setpin(pgm->fd, pgm->pinno[PIN_LED_PGM], !value);
return 0;
}
int ppi_vfy_led(PROGRAMMER * pgm, int value)
{
ppi_setpin(pgm->fd, pgm->pinno[PIN_LED_VFY], !value);
return 0;
}
/*
* transmit an AVR device command and return the results; 'cmd' and
* 'res' must point to at least a 4 byte data buffer
*/
int ppi_cmd(PROGRAMMER * pgm, unsigned char cmd[4], unsigned char res[4])
{
int i;
for (i=0; i<4; i++) {
res[i] = ppi_txrx(pgm, cmd[i]);
}
#if 0
fprintf(stderr, "avr_cmd(): [ ");
for (i=0; i<4; i++)
fprintf(stderr, "%02x ", cmd[i]);
fprintf(stderr, "] [ ");
for (i=0; i<4; i++)
fprintf(stderr, "%02x ", res[i]);
fprintf(stderr, "]\n");
#endif
return 0;
}
/*
* issue the 'chip erase' command to the AVR device
*/
int ppi_chip_erase(PROGRAMMER * pgm, AVRPART * p)
{
unsigned char cmd[4];
unsigned char res[4];
int cycles;
int rc;
if (p->op[AVR_OP_CHIP_ERASE] == NULL) {
fprintf(stderr, "chip erase instruction not defined for part \"%s\"\n",
p->desc);
return -1;
}
rc = avr_get_cycle_count(pgm, p, &cycles);
/*
* only print out the current cycle count if we aren't going to
* display it below
*/
if (!do_cycles && ((rc >= 0) && (cycles != 0xffffffff))) {
fprintf(stderr,
"%s: current erase-rewrite cycle count is %d%s\n",
progname, cycles,
do_cycles ? "" : " (if being tracked)");
}
pgm->pgm_led(pgm, ON);
memset(cmd, 0, sizeof(cmd));
avr_set_bits(p->op[AVR_OP_CHIP_ERASE], cmd);
pgm->cmd(pgm, cmd, res);
usleep(p->chip_erase_delay);
pgm->initialize(pgm, p);
pgm->pgm_led(pgm, OFF);
if (do_cycles && (cycles != -1)) {
if (cycles == 0x00ffff) {
cycles = 0;
}
cycles++;
fprintf(stderr, "%s: erase-rewrite cycle count is now %d\n",
progname, cycles);
avr_put_cycle_count(pgm, p, cycles);
}
return 0;
}
/*
* issue the 'program enable' command to the AVR device
*/
int ppi_program_enable(PROGRAMMER * pgm, AVRPART * p)
{
unsigned char cmd[4];
unsigned char res[4];
if (p->op[AVR_OP_PGM_ENABLE] == NULL) {
fprintf(stderr, "program enable instruction not defined for part \"%s\"\n",
p->desc);
return -1;
}
memset(cmd, 0, sizeof(cmd));
avr_set_bits(p->op[AVR_OP_PGM_ENABLE], cmd);
pgm->cmd(pgm, cmd, res);
if (res[2] != cmd[1])
return -2;
return 0;
}
/*
* apply power to the AVR processor
*/
void ppi_powerup(PROGRAMMER * pgm)
{
ppi_set(pgm->fd, PPIDATA, pgm->pinno[PPI_AVR_VCC]); /* power up */
usleep(100000);
}
/*
* remove power from the AVR processor
*/
void ppi_powerdown(PROGRAMMER * pgm)
{
ppi_clr(pgm->fd, PPIDATA, pgm->pinno[PPI_AVR_VCC]); /* power down */
}
/*
* initialize the AVR device and prepare it to accept commands
*/
int ppi_initialize(PROGRAMMER * pgm, AVRPART * p)
{
int rc;
int tries;
pgm->powerup(pgm);
usleep(20000);
ppi_setpin(pgm->fd, pgm->pinno[PIN_AVR_SCK], 0);
ppi_setpin(pgm->fd, pgm->pinno[PIN_AVR_RESET], 0);
usleep(20000);
ppi_pulsepin(pgm->fd, pgm->pinno[PIN_AVR_RESET]);
usleep(20000); /* 20 ms XXX should be a per-chip parameter */
/*
* Enable programming mode. If we are programming an AT90S1200, we
* can only issue the command and hope it worked. If we are using
* one of the other chips, the chip will echo 0x53 when issuing the
* third byte of the command. In this case, try up to 32 times in
* order to possibly get back into sync with the chip if we are out
* of sync.
*/
if (strcmp(p->desc, "AT90S1200")==0) {
pgm->program_enable(pgm, p);
}
else {
tries = 0;
do {
rc = pgm->program_enable(pgm, p);
if ((rc == 0)||(rc == -1))
break;
ppi_pulsepin(pgm->fd, pgm->pinno[PIN_AVR_SCK]);
tries++;
} while (tries < 65);
/*
* can't sync with the device, maybe it's not attached?
*/
if (rc) {
fprintf(stderr, "%s: AVR device not responding\n", progname);
return -1;
}
}
return 0;
}
int ppi_save(PROGRAMMER * pgm)
{
int rc;
rc = ppi_getall(pgm->fd, PPIDATA);
if (rc < 0) {
fprintf(stderr, "%s: error reading status of ppi data port\n", progname);
return -1;
}
pgm->ppidata = rc;
return 0;
}
void ppi_restore(PROGRAMMER * pgm)
{
ppi_setall(pgm->fd, PPIDATA, pgm->ppidata);
}
void ppi_disable(PROGRAMMER * pgm)
{
ppi_set(pgm->fd, PPIDATA, pgm->pinno[PPI_AVR_BUFF]);
}
void ppi_enable(PROGRAMMER * pgm)
{
/*
* Prepare to start talking to the connected device - pull reset low
* first, delay a few milliseconds, then enable the buffer. This
* sequence allows the AVR to be reset before the buffer is enabled
* to avoid a short period of time where the AVR may be driving the
* programming lines at the same time the programmer tries to. Of
* course, if a buffer is being used, then the /RESET line from the
* programmer needs to be directly connected to the AVR /RESET line
* and not via the buffer chip.
*/
ppi_setpin(pgm->fd, pgm->pinno[PIN_AVR_RESET], 0);
usleep(1);
/*
* enable the 74367 buffer, if connected; this signal is active low
*/
ppi_clr(pgm->fd, PPIDATA, pgm->pinno[PPI_AVR_BUFF]);
}
void ppi_open(PROGRAMMER * pgm, char * port)
{
pgm->fd = open(port, O_RDWR);
if (pgm->fd < 0) {
fprintf(stderr, "%s: can't open device \"%s\": %s\n\n",
fd = open(port, O_RDWR);
if (fd < 0) {
fprintf(stderr, "%s: can't open device \"%s\": %s\n",
progname, port, strerror(errno));
exit(1);
return -1;
}
ppi_claim(pgm);
return fd;
}
void ppi_close(PROGRAMMER * pgm)
void ppi_close(int fd)
{
ppi_release(pgm);
close(pgm->fd);
pgm->fd = -1;
}
void ppi_display(PROGRAMMER * pgm, char * p)
{
char vccpins[64];
char buffpins[64];
if (pgm->pinno[PPI_AVR_VCC]) {
snprintf(vccpins, sizeof(vccpins), " = pins %s",
vccpins_str(pgm->pinno[PPI_AVR_VCC]));
}
else {
strcpy(vccpins, " (not used)");
}
if (pgm->pinno[PPI_AVR_BUFF]) {
snprintf(buffpins, sizeof(buffpins), " = pins %s",
vccpins_str(pgm->pinno[PPI_AVR_BUFF]));
}
else {
strcpy(buffpins, " (not used)");
}
fprintf(stderr, "%sProgrammer Pin Configuration: %s (%s)\n", p,
(char *)ldata(lfirst(pgm->id)), pgm->desc);
fprintf(stderr,
"%s VCC = 0x%02x%s\n"
"%s BUFF = 0x%02x%s\n"
"%s RESET = %d\n"
"%s SCK = %d\n"
"%s MOSI = %d\n"
"%s MISO = %d\n"
"%s ERR LED = %d\n"
"%s RDY LED = %d\n"
"%s PGM LED = %d\n"
"%s VFY LED = %d\n",
p, pgm->pinno[PPI_AVR_VCC], vccpins,
p, pgm->pinno[PPI_AVR_BUFF], buffpins,
p, pgm->pinno[PIN_AVR_RESET],
p, pgm->pinno[PIN_AVR_SCK],
p, pgm->pinno[PIN_AVR_MOSI],
p, pgm->pinno[PIN_AVR_MISO],
p, pgm->pinno[PIN_LED_ERR],
p, pgm->pinno[PIN_LED_RDY],
p, pgm->pinno[PIN_LED_PGM],
p, pgm->pinno[PIN_LED_VFY]);
}
void ppi_initpgm(PROGRAMMER * pgm)
{
strcpy(pgm->type, "PPI");
pgm->rdy_led = ppi_rdy_led;
pgm->err_led = ppi_err_led;
pgm->pgm_led = ppi_pgm_led;
pgm->vfy_led = ppi_vfy_led;
pgm->initialize = ppi_initialize;
pgm->display = ppi_display;
pgm->save = ppi_save;
pgm->restore = ppi_restore;
pgm->enable = ppi_enable;
pgm->disable = ppi_disable;
pgm->powerup = ppi_powerup;
pgm->powerdown = ppi_powerdown;
pgm->program_enable = ppi_program_enable;
pgm->chip_erase = ppi_chip_erase;
pgm->cmd = ppi_cmd;
pgm->open = ppi_open;
pgm->close = ppi_close;
close(fd);
}
#endif

27
ppi.h
View File

@ -24,10 +24,15 @@
#include "config.h"
/*
* PPI registers
*/
enum {
PPIDATA,
PPICTRL,
PPISTATUS
};
void ppi_initpgm (PROGRAMMER * pgm);
int ppi_getpinmask(int pin);
#if !defined(ppi_claim)
# define ppi_claim(pgm)
@ -37,6 +42,22 @@ int ppi_getpinmask(int pin);
# define ppi_release(pgm)
#endif
int ppi_get (int fd, int reg, int bit);
int ppi_set (int fd, int reg, int bit);
int ppi_clr (int fd, int reg, int bit);
int ppi_getall (int fd, int reg);
int ppi_setall (int fd, int reg, int val);
int ppi_toggle (int fd, int reg, int bit);
int ppi_open (char * port);
void ppi_close (int fd);
#endif

47
stk500.c
View File

@ -46,7 +46,7 @@ extern char * progname;
extern int do_cycles;
int static stk500_send(PROGRAMMER * pgm, char * buf, int buflen)
static int stk500_send(PROGRAMMER * pgm, char * buf, int buflen)
{
struct timeval timeout;
fd_set wfds;
@ -97,7 +97,7 @@ int static stk500_send(PROGRAMMER * pgm, char * buf, int buflen)
int static stk500_recv(PROGRAMMER * pgm, char * buf, int n)
static int stk500_recv(PROGRAMMER * pgm, char * buf, int n)
{
struct timeval timeout;
fd_set rfds;
@ -144,7 +144,7 @@ int static stk500_recv(PROGRAMMER * pgm, char * buf, int n)
}
int static stk500_drain(PROGRAMMER * pgm, int display)
static int stk500_drain(PROGRAMMER * pgm, int display)
{
struct timeval timeout;
fd_set rfds;
@ -227,22 +227,22 @@ static int stk500_getsync(PROGRAMMER * pgm)
}
int stk500_rdy_led(PROGRAMMER * pgm, int value)
static int stk500_rdy_led(PROGRAMMER * pgm, int value)
{
return 0;
}
int stk500_err_led(PROGRAMMER * pgm, int value)
static int stk500_err_led(PROGRAMMER * pgm, int value)
{
return 0;
}
int stk500_pgm_led(PROGRAMMER * pgm, int value)
static int stk500_pgm_led(PROGRAMMER * pgm, int value)
{
return 0;
}
int stk500_vfy_led(PROGRAMMER * pgm, int value)
static int stk500_vfy_led(PROGRAMMER * pgm, int value)
{
return 0;
}
@ -252,7 +252,8 @@ int stk500_vfy_led(PROGRAMMER * pgm, int value)
* transmit an AVR device command and return the results; 'cmd' and
* 'res' must point to at least a 4 byte data buffer
*/
int stk500_cmd(PROGRAMMER * pgm, unsigned char cmd[4], unsigned char res[4])
static int stk500_cmd(PROGRAMMER * pgm, unsigned char cmd[4],
unsigned char res[4])
{
unsigned char buf[32];
@ -290,7 +291,7 @@ int stk500_cmd(PROGRAMMER * pgm, unsigned char cmd[4], unsigned char res[4])
/*
* issue the 'chip erase' command to the AVR device
*/
int stk500_chip_erase(PROGRAMMER * pgm, AVRPART * p)
static int stk500_chip_erase(PROGRAMMER * pgm, AVRPART * p)
{
unsigned char cmd[4];
unsigned char res[4];
@ -343,7 +344,7 @@ int stk500_chip_erase(PROGRAMMER * pgm, AVRPART * p)
/*
* issue the 'program enable' command to the AVR device
*/
int stk500_program_enable(PROGRAMMER * pgm, AVRPART * p)
static int stk500_program_enable(PROGRAMMER * pgm, AVRPART * p)
{
unsigned char buf[16];
int tries=0;
@ -394,7 +395,7 @@ int stk500_program_enable(PROGRAMMER * pgm, AVRPART * p)
/*
* apply power to the AVR processor
*/
void stk500_powerup(PROGRAMMER * pgm)
static void stk500_powerup(PROGRAMMER * pgm)
{
return;
}
@ -403,7 +404,7 @@ void stk500_powerup(PROGRAMMER * pgm)
/*
* remove power from the AVR processor
*/
void stk500_powerdown(PROGRAMMER * pgm)
static void stk500_powerdown(PROGRAMMER * pgm)
{
return;
}
@ -412,7 +413,7 @@ void stk500_powerdown(PROGRAMMER * pgm)
/*
* initialize the AVR device and prepare it to accept commands
*/
int stk500_initialize(PROGRAMMER * pgm, AVRPART * p)
static int stk500_initialize(PROGRAMMER * pgm, AVRPART * p)
{
unsigned char buf[32];
AVRMEM * m;
@ -531,17 +532,17 @@ int stk500_initialize(PROGRAMMER * pgm, AVRPART * p)
}
int stk500_save(PROGRAMMER * pgm)
static int stk500_save(PROGRAMMER * pgm)
{
return 0;
}
void stk500_restore(PROGRAMMER * pgm)
static void stk500_restore(PROGRAMMER * pgm)
{
return;
}
void stk500_disable(PROGRAMMER * pgm)
static void stk500_disable(PROGRAMMER * pgm)
{
unsigned char buf[16];
int tries=0;
@ -588,13 +589,13 @@ void stk500_disable(PROGRAMMER * pgm)
return;
}
void stk500_enable(PROGRAMMER * pgm)
static void stk500_enable(PROGRAMMER * pgm)
{
return;
}
int static stk500_setattr(int fd)
static int stk500_setattr(int fd)
{
int rc;
struct termios termios;
@ -634,7 +635,7 @@ int static stk500_setattr(int fd)
}
void stk500_open(PROGRAMMER * pgm, char * port)
static void stk500_open(PROGRAMMER * pgm, char * port)
{
int rc;
@ -672,7 +673,7 @@ void stk500_open(PROGRAMMER * pgm, char * port)
}
void stk500_close(PROGRAMMER * pgm)
static void stk500_close(PROGRAMMER * pgm)
{
close(pgm->fd);
pgm->fd = -1;
@ -726,7 +727,7 @@ static int stk500_loadaddr(PROGRAMMER * pgm, unsigned int addr)
}
int stk500_paged_write(PROGRAMMER * pgm, AVRPART * p, AVRMEM * m,
static int stk500_paged_write(PROGRAMMER * pgm, AVRPART * p, AVRMEM * m,
int page_size, int n_bytes)
{
unsigned char buf[16];
@ -817,7 +818,7 @@ int stk500_paged_write(PROGRAMMER * pgm, AVRPART * p, AVRMEM * m,
}
int stk500_paged_load(PROGRAMMER * pgm, AVRPART * p, AVRMEM * m,
static int stk500_paged_load(PROGRAMMER * pgm, AVRPART * p, AVRMEM * m,
int page_size, int n_bytes)
{
unsigned char buf[16];
@ -960,7 +961,7 @@ static int stk500_getparm(PROGRAMMER * pgm, unsigned parm, unsigned * value)
}
void stk500_display(PROGRAMMER * pgm, char * p)
static void stk500_display(PROGRAMMER * pgm, char * p)
{
unsigned maj, min, hdw;