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serbb_win32.c
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/*
* avrdude - A Downloader/Uploader for AVR device programmers
* Copyright (C) 2003, 2004 Martin J. Thomas <[email protected]>
* Copyright (C) 2005 Michael Holzt <[email protected]>
* Copyright (C) 2005, 2006 Joerg Wunsch <[email protected]>
*
* 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: serbb_win32.c 976 2011-08-23 21:03:36Z joerg_wunsch $ */
/*
* Win32 serial bitbanging interface for avrdude.
*/
#include "avrdude.h"
#if defined(WIN32NATIVE)
#include "ac_cfg.h"
#include <windows.h>
#include <stdio.h>
#include "avr.h"
#include "pindefs.h"
#include "pgm.h"
#include "bitbang.h"
/* cached status lines */
static int dtr, rts, txd;
#define W32SERBUFSIZE 1024
/*
serial port/pin mapping
1 cd <-
2 (rxd) <-
3 txd ->
4 dtr ->
5 GND
6 dsr <-
7 rts ->
8 cts <-
9 ri <-
*/
#define DB9PINS 9
static int serbb_setpin(PROGRAMMER * pgm, int pin, int value)
{
HANDLE hComPort = (HANDLE)pgm->fd.pfd;
LPVOID lpMsgBuf;
DWORD dwFunc;
const char *name;
if (pin & PIN_INVERSE)
{
value = !value;
pin &= PIN_MASK;
}
if (pin < 1 || pin > DB9PINS)
return -1;
switch (pin)
{
case 3: /* txd */
dwFunc = value? SETBREAK: CLRBREAK;
name = value? "SETBREAK": "CLRBREAK";
txd = value;
break;
case 4: /* dtr */
dwFunc = value? SETDTR: CLRDTR;
name = value? "SETDTR": "CLRDTR";
dtr = value;
break;
case 7: /* rts */
dwFunc = value? SETRTS: CLRRTS;
name = value? "SETRTS": "CLRRTS";
break;
default:
if (verbose)
fprintf(stderr,
"%s: serbb_setpin(): unknown pin %d\n",
progname, pin + 1);
return -1;
}
if (verbose > 4)
fprintf(stderr,
"%s: serbb_setpin(): EscapeCommFunction(%s)\n",
progname, name);
if (!EscapeCommFunction(hComPort, dwFunc))
{
FormatMessage(
FORMAT_MESSAGE_ALLOCATE_BUFFER |
FORMAT_MESSAGE_FROM_SYSTEM |
FORMAT_MESSAGE_IGNORE_INSERTS,
NULL,
GetLastError(),
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), // Default language
(LPTSTR) &lpMsgBuf,
0,
NULL);
fprintf(stderr,
"%s: serbb_setpin(): SetCommState() failed: %s\n",
progname, (char *)lpMsgBuf);
CloseHandle(hComPort);
LocalFree(lpMsgBuf);
exit(1);
}
if (pgm->ispdelay > 1)
bitbang_delay(pgm->ispdelay);
return 0;
}
static int serbb_getpin(PROGRAMMER * pgm, int pin)
{
HANDLE hComPort = (HANDLE)pgm->fd.pfd;
LPVOID lpMsgBuf;
int invert, rv;
const char *name;
DWORD modemstate;
if (pin & PIN_INVERSE)
{
invert = 1;
pin &= PIN_MASK;
} else
invert = 0;
if (pin < 1 || pin > DB9PINS)
return -1;
if (pin == 1 /* cd */ || pin == 6 /* dsr */ || pin == 8 /* cts */)
{
if (!GetCommModemStatus(hComPort, &modemstate))
{
FormatMessage(
FORMAT_MESSAGE_ALLOCATE_BUFFER |
FORMAT_MESSAGE_FROM_SYSTEM |
FORMAT_MESSAGE_IGNORE_INSERTS,
NULL,
GetLastError(),
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), // Default language
(LPTSTR) &lpMsgBuf,
0,
NULL);
fprintf(stderr,
"%s: serbb_setpin(): GetCommModemStatus() failed: %s\n",
progname, (char *)lpMsgBuf);
CloseHandle(hComPort);
LocalFree(lpMsgBuf);
exit(1);
}
if (verbose > 4)
fprintf(stderr,
"%s: serbb_getpin(): GetCommState() => 0x%lx\n",
progname, modemstate);
switch (pin)
{
case 1:
modemstate &= MS_RLSD_ON;
break;
case 6:
modemstate &= MS_DSR_ON;
break;
case 8:
modemstate &= MS_CTS_ON;
break;
}
rv = modemstate != 0;
if (invert)
rv = !rv;
return rv;
}
switch (pin)
{
case 3: /* txd */
rv = txd;
name = "TXD";
break;
case 4: /* dtr */
rv = dtr;
name = "DTR";
break;
case 7: /* rts */
rv = rts;
name = "RTS";
break;
default:
if (verbose)
fprintf(stderr,
"%s: serbb_getpin(): unknown pin %d\n",
progname, pin + 1);
return -1;
}
if (verbose > 4)
fprintf(stderr,
"%s: serbb_getpin(): return cached state for %s\n",
progname, name);
if (invert)
rv = !rv;
return rv;
}
static int serbb_highpulsepin(PROGRAMMER * pgm, int pin)
{
if ( (pin & PIN_MASK) < 1 || (pin & PIN_MASK) > DB9PINS )
return -1;
serbb_setpin(pgm, pin, 1);
serbb_setpin(pgm, pin, 0);
return 0;
}
static void serbb_display(PROGRAMMER *pgm, const char *p)
{
/* MAYBE */
}
static void serbb_enable(PROGRAMMER *pgm)
{
/* nothing */
}
static void serbb_disable(PROGRAMMER *pgm)
{
/* nothing */
}
static void serbb_powerup(PROGRAMMER *pgm)
{
/* nothing */
}
static void serbb_powerdown(PROGRAMMER *pgm)
{
/* nothing */
}
static int serbb_open(PROGRAMMER *pgm, char *port)
{
DCB dcb;
LPVOID lpMsgBuf;
HANDLE hComPort = INVALID_HANDLE_VALUE;
bitbang_check_prerequisites(pgm);
hComPort = CreateFile(port, GENERIC_READ | GENERIC_WRITE, 0, NULL,
OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
if (hComPort == INVALID_HANDLE_VALUE) {
FormatMessage(
FORMAT_MESSAGE_ALLOCATE_BUFFER |
FORMAT_MESSAGE_FROM_SYSTEM |
FORMAT_MESSAGE_IGNORE_INSERTS,
NULL,
GetLastError(),
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), // Default language
(LPTSTR) &lpMsgBuf,
0,
NULL);
fprintf(stderr, "%s: ser_open(): can't open device \"%s\": %s\n",
progname, port, (char*)lpMsgBuf);
LocalFree(lpMsgBuf);
return -1;
}
if (!SetupComm(hComPort, W32SERBUFSIZE, W32SERBUFSIZE))
{
CloseHandle(hComPort);
fprintf(stderr, "%s: ser_open(): can't set buffers for \"%s\"\n",
progname, port);
return -1;
}
ZeroMemory(&dcb, sizeof(DCB));
dcb.DCBlength = sizeof(DCB);
dcb.BaudRate = CBR_9600;
dcb.fBinary = 1;
dcb.fDtrControl = DTR_CONTROL_DISABLE;
dcb.fRtsControl = RTS_CONTROL_DISABLE;
dcb.ByteSize = 8;
dcb.Parity = NOPARITY;
dcb.StopBits = ONESTOPBIT;
if (!SetCommState(hComPort, &dcb))
{
CloseHandle(hComPort);
fprintf(stderr, "%s: ser_open(): can't set com-state for \"%s\"\n",
progname, port);
return -1;
}
if (verbose > 2)
fprintf(stderr,
"%s: ser_open(): opened comm port \"%s\", handle 0x%x\n",
progname, port, (int)hComPort);
pgm->fd.pfd = (void *)hComPort;
dtr = rts = txd = 0;
return 0;
}
static void serbb_close(PROGRAMMER *pgm)
{
HANDLE hComPort=(HANDLE)pgm->fd.pfd;
if (hComPort != INVALID_HANDLE_VALUE)
{
pgm->setpin(pgm, pgm->pinno[PIN_AVR_RESET], 1);
CloseHandle (hComPort);
}
if (verbose > 2)
fprintf(stderr,
"%s: ser_close(): closed comm port handle 0x%x\n",
progname, (int)hComPort);
hComPort = INVALID_HANDLE_VALUE;
}
void serbb_initpgm(PROGRAMMER *pgm)
{
strcpy(pgm->type, "SERBB");
pgm->rdy_led = bitbang_rdy_led;
pgm->err_led = bitbang_err_led;
pgm->pgm_led = bitbang_pgm_led;
pgm->vfy_led = bitbang_vfy_led;
pgm->initialize = bitbang_initialize;
pgm->display = serbb_display;
pgm->enable = serbb_enable;
pgm->disable = serbb_disable;
pgm->powerup = serbb_powerup;
pgm->powerdown = serbb_powerdown;
pgm->program_enable = bitbang_program_enable;
pgm->chip_erase = bitbang_chip_erase;
pgm->cmd = bitbang_cmd;
pgm->cmd_tpi = bitbang_cmd_tpi;
pgm->open = serbb_open;
pgm->close = serbb_close;
pgm->setpin = serbb_setpin;
pgm->getpin = serbb_getpin;
pgm->highpulsepin = serbb_highpulsepin;
pgm->read_byte = avr_read_byte_default;
pgm->write_byte = avr_write_byte_default;
}
#endif /* WIN32NATIVE */