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avrdude/ser_win32.c

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/*
* avrdude - A Downloader/Uploader for AVR device programmers
* Copyright (C) 2003, 2004 Martin J. Thomas <mthomas@rhrk.uni-kl.de>
* Copyright (C) 2006 Joerg Wunsch <j@uriah.heep.sax.de>
*
* 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, see <http://www.gnu.org/licenses/>.
*/
/* $Id$ */
/*
* Native Win32 serial interface for avrdude.
*/
#if defined(WIN32NATIVE)
#include <windows.h>
#include <stdio.h>
#include <ctype.h> /* for isprint */
#include "avrdude.h"
#include "libavrdude.h"
long serial_recv_timeout = 5000; /* ms */
#define W32SERBUFSIZE 1024
struct baud_mapping {
long baud;
DWORD speed;
};
/* HANDLE hComPort=INVALID_HANDLE_VALUE; */
static struct baud_mapping baud_lookup_table [] = {
{ 1200, CBR_1200 },
{ 2400, CBR_2400 },
{ 4800, CBR_4800 },
{ 9600, CBR_9600 },
{ 19200, CBR_19200 },
{ 38400, CBR_38400 },
{ 57600, CBR_57600 },
{ 115200, CBR_115200 },
{ 0, 0 } /* Terminator. */
};
static DWORD serial_baud_lookup(long baud)
{
struct baud_mapping *map = baud_lookup_table;
while (map->baud) {
if (map->baud == baud)
return map->speed;
map++;
}
/*
* If a non-standard BAUD rate is used, issue
* a warning (if we are verbose) and return the raw rate
*/
if (verbose > 0)
avrdude_message("%s: serial_baud_lookup(): Using non-standard baud rate: %ld",
progname, baud);
return baud;
}
static BOOL serial_w32SetTimeOut(HANDLE hComPort, DWORD timeout) // in ms
{
COMMTIMEOUTS ctmo;
ZeroMemory (&ctmo, sizeof(COMMTIMEOUTS));
ctmo.ReadIntervalTimeout = timeout;
ctmo.ReadTotalTimeoutMultiplier = timeout;
ctmo.ReadTotalTimeoutConstant = timeout;
return SetCommTimeouts(hComPort, &ctmo);
}
static int ser_setspeed(union filedescriptor *fd, long baud)
{
DCB dcb;
HANDLE hComPort = (HANDLE)fd->pfd;
ZeroMemory (&dcb, sizeof(DCB));
dcb.DCBlength = sizeof(DCB);
dcb.BaudRate = serial_baud_lookup (baud);
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))
return -1;
return 0;
}
static int ser_open(char * port, union pinfo pinfo, union filedescriptor *fdp)
{
LPVOID lpMsgBuf;
HANDLE hComPort=INVALID_HANDLE_VALUE;
char *newname = 0;
/*
* If the port is of the form "net:<host>:<port>", then
* handle it as a TCP connection to a terminal server.
*
* This is curently not implemented for Win32.
*/
if (strncmp(port, "net:", strlen("net:")) == 0) {
avrdude_message("%s: ser_open(): network connects are currently not"
"implemented for Win32 environments\n",
progname);
return -1;
}
if (strncasecmp(port, "com", strlen("com")) == 0) {
// prepend "\\\\.\\" to name, required for port # >= 10
newname = malloc(strlen("\\\\.\\") + strlen(port) + 1);
if (newname == 0) {
avrdude_message("%s: ser_open(): out of memory\n",
progname);
exit(1);
}
strcpy(newname, "\\\\.\\");
strcat(newname, port);
port = newname;
}
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);
avrdude_message("%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);
avrdude_message("%s: ser_open(): can't set buffers for \"%s\"\n",
progname, port);
return -1;
}
fdp->pfd = (void *)hComPort;
if (ser_setspeed(fdp, pinfo.baud) != 0)
{
CloseHandle(hComPort);
avrdude_message("%s: ser_open(): can't set com-state for \"%s\"\n",
progname, port);
return -1;
}
if (!serial_w32SetTimeOut(hComPort,0))
{
CloseHandle(hComPort);
avrdude_message("%s: ser_open(): can't set initial timeout for \"%s\"\n",
progname, port);
return -1;
}
if (newname != 0) {
free(newname);
}
return 0;
}
static void ser_close(union filedescriptor *fd)
{
HANDLE hComPort=(HANDLE)fd->pfd;
if (hComPort != INVALID_HANDLE_VALUE)
CloseHandle (hComPort);
hComPort = INVALID_HANDLE_VALUE;
}
static int ser_set_dtr_rts(union filedescriptor *fd, int is_on)
{
HANDLE hComPort=(HANDLE)fd->pfd;
if (is_on) {
EscapeCommFunction(hComPort, SETDTR);
EscapeCommFunction(hComPort, SETRTS);
} else {
EscapeCommFunction(hComPort, CLRDTR);
EscapeCommFunction(hComPort, CLRRTS);
}
return 0;
}
static int ser_send(union filedescriptor *fd, unsigned char * buf, size_t buflen)
{
size_t len = buflen;
unsigned char c='\0';
DWORD written;
unsigned char * b = buf;
HANDLE hComPort=(HANDLE)fd->pfd;
if (hComPort == INVALID_HANDLE_VALUE) {
avrdude_message("%s: ser_send(): port not open\n",
progname);
return -1;
}
if (!len)
return 0;
if (verbose > 3)
{
avrdude_message("%s: Send: ", progname);
while (len) {
c = *b;
if (isprint(c)) {
avrdude_message("%c ", c);
}
else {
avrdude_message(". ");
}
avrdude_message("[%02x] ", c);
b++;
len--;
}
avrdude_message("\n");
}
serial_w32SetTimeOut(hComPort,500);
if (!WriteFile (hComPort, buf, buflen, &written, NULL)) {
avrdude_message("%s: ser_send(): write error: %s\n",
progname, "sorry no info avail"); // TODO
return -1;
}
if (written != buflen) {
avrdude_message("%s: ser_send(): size/send mismatch\n",
progname);
return -1;
}
return 0;
}
static int ser_recv(union filedescriptor *fd, unsigned char * buf, size_t buflen)
{
unsigned char c;
unsigned char * p = buf;
DWORD read;
HANDLE hComPort=(HANDLE)fd->pfd;
if (hComPort == INVALID_HANDLE_VALUE) {
avrdude_message("%s: ser_read(): port not open\n",
progname);
return -1;
}
serial_w32SetTimeOut(hComPort, serial_recv_timeout);
if (!ReadFile(hComPort, buf, buflen, &read, NULL)) {
LPVOID lpMsgBuf;
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 );
avrdude_message("%s: ser_recv(): read error: %s\n",
progname, (char*)lpMsgBuf);
LocalFree( lpMsgBuf );
return -1;
}
/* time out detected */
if (read == 0) {
if (verbose > 1)
avrdude_message("%s: ser_recv(): programmer is not responding\n",
progname);
return -1;
}
p = buf;
if (verbose > 3)
{
avrdude_message("%s: Recv: ", progname);
while (read) {
c = *p;
if (isprint(c)) {
avrdude_message("%c ", c);
}
else {
avrdude_message(". ");
}
avrdude_message("[%02x] ", c);
p++;
read--;
}
avrdude_message("\n");
}
return 0;
}
static int ser_drain(union filedescriptor *fd, int display)
{
// int rc;
unsigned char buf[10];
BOOL readres;
DWORD read;
HANDLE hComPort=(HANDLE)fd->pfd;
if (hComPort == INVALID_HANDLE_VALUE) {
avrdude_message("%s: ser_drain(): port not open\n",
progname);
return -1;
}
serial_w32SetTimeOut(hComPort,250);
if (display) {
avrdude_message("drain>");
}
while (1) {
readres=ReadFile(hComPort, buf, 1, &read, NULL);
if (!readres) {
LPVOID lpMsgBuf;
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 );
avrdude_message("%s: ser_drain(): read error: %s\n",
progname, (char*)lpMsgBuf);
LocalFree( lpMsgBuf );
return -1;
}
if (read) { // data avail
if (display) avrdude_message("%02x ", buf[0]);
}
else { // no more data
if (display) avrdude_message("<drain\n");
break;
}
} // while
return 0;
}
struct serial_device serial_serdev =
{
.open = ser_open,
.setspeed = ser_setspeed,
.close = ser_close,
.send = ser_send,
.recv = ser_recv,
.drain = ser_drain,
.set_dtr_rts = ser_set_dtr_rts,
.flags = SERDEV_FL_CANSETSPEED,
};
struct serial_device *serdev = &serial_serdev;
#endif /* WIN32NATIVE */
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