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227 lines
6.4 KiB
227 lines
6.4 KiB
/***************************************************************************
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* wince_gps.c
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*
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* December 2010, Steffen Pohle steffen@gulpe.de
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****************************************************************************/
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/*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <unistd.h>
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#include <string.h>
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#include <stdio.h>
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#include <stdint.h>
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#include <time.h>
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#include <stdlib.h>
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#include <windows.h>
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#include <commctrl.h>
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#include <winbase.h>
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#include <tchar.h>
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#if defined(__MINGW32CE__) || defined(_WIN32_WCE)
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#include <aygshell.h>
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#endif
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#include <mmsystem.h>
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#include <shlobj.h>
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#include "osmroute.h"
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#include "gps.h"
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#include "memoryleak.h"
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#include "system.h"
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int gps_serial_comport = 0;
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int gps_serial_baudrate = 6;
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char gps_wince_device[GPS_DEVICELEN] = "\0";
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int gps_serial_baudratearray[] = { CBR_1200, CBR_2400, CBR_4800, CBR_9600, CBR_19200, CBR_38400, CBR_57600, CBR_115200 };
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char gps_serial_device[LEN_FILENAME] = "";
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HANDLE gps_serial_hGPScomm;
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void gps_serial_settings_read_device ();
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/*
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* read the settings from the comport and fill out the data block
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* comport, baudrate
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*/
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void gps_serial_settings_read_device () {
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char *cfg = gps_get_device ();
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char port[16], baud[16];
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int i;
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if (strncmp (cfg, "serial:", 7) == 0) {
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/* serial setting found */
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cfg = strchr (cfg, ':') + 1;
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if (strncmp (cfg, "com", 3) == 0) {
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/* com port */
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cfg = cfg + 3;
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for (i = 0; (i < 15 && cfg[i] != ',' && cfg[i] != 0); i++)
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port[i] = cfg[i];
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port[i] = 0;
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gps_serial_comport = atoi(port) - 1;
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/* baudrate */
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cfg = cfg + i + 1;
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for (i = 0; (i < 15 && cfg[i] != ',' && cfg[i] != 0); i++)
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baud[i] = cfg[i];
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baud[i] = 0;
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i = atoi(baud);
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gps_serial_baudrate = 7;
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switch (i) {
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case (CBR_1200):
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gps_serial_baudrate--;
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case (CBR_2400):
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gps_serial_baudrate--;
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case (CBR_4800):
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gps_serial_baudrate--;
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case (CBR_9600):
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gps_serial_baudrate--;
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case (CBR_19200):
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gps_serial_baudrate--;
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case (CBR_38400):
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gps_serial_baudrate--;
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case (CBR_57600):
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gps_serial_baudrate--;
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default:
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break;
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}
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}
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}
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#if defined(__MINGW32CE__) || defined(_WIN32_WCE)
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snprintf (gps_serial_device, LEN_FILENAME, "com%d:", gps_serial_comport+1);
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#else
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snprintf (gps_serial_device, LEN_FILENAME, "com%d", gps_serial_comport+1);
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#endif
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};
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/*
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* initialize gps device (for now on windows only serial port supported
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*/
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int gps_serial_device_open () {
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DCB dcb;
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COMMTIMEOUTS cto;
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#if defined(__MINGW32CE__) || defined(_WIN32_WCE)
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WCHAR device[GPS_DEVICELEN];
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#endif
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/* get config data */
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gps_serial_settings_read_device ();
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/* open serial port */
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#if defined(__MINGW32CE__) || defined(_WIN32_WCE)
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char2wchar (device, GPS_DEVICELEN, gps_serial_device);
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gps_serial_hGPScomm = CreateFile(device, GENERIC_READ | GENERIC_WRITE, 0, 0, OPEN_EXISTING, 0, 0);
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#else
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gps_serial_hGPScomm = CreateFile(gps_serial_device, GENERIC_READ | GENERIC_WRITE, 0, 0, OPEN_EXISTING, 0, 0);
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#endif
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if (gps_serial_hGPScomm == INVALID_HANDLE_VALUE) {
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d_printf ("%s:%d gps_device_open: error during CreateFile (%s)", __FILE__, __LINE__, gps_serial_device);
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return 0;
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}
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/*
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* setup the serial device with our data
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* read current settings, change settings and setup the new settings of the port
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*/
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memset (&dcb, sizeof(dcb), 0);
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if (!GetCommState(gps_serial_hGPScomm, &dcb)) {
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d_printf ("%s:%d gps_device_open: error during GetCommState", __FILE__, __LINE__);
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return 0;
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}
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dcb.BaudRate = gps_serial_baudratearray[gps_serial_baudrate];
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d_printf ("set baud rate to: %d", dcb.BaudRate);
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if (!SetCommState(gps_serial_hGPScomm, &dcb)) {
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/* Error in SetCommState. Possibly a problem with the communications
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* port handle or a problem with the DCB structure itself.
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*/
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d_printf ("%s:%d gps_device_open: error during SetCommState", __FILE__, __LINE__);
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return 0;
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}
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/*
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* setup the timeouts for the port
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*/
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if (!GetCommTimeouts(gps_serial_hGPScomm, &cto)) {
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d_printf ("%s:%d gps_device_open: error during GetCommTimeouts", __FILE__, __LINE__);
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}
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d_printf ("%s:%d commtimeout default: ReadIntervalTimeout %d, ReadTotalTimeoutMultiplier %d, ReadTotalTimeoutConstant %d, WriteTotalTimeoutMultiplier %d, WriteTotalTimeoutConstant %d",
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__FILE__, __LINE__, cto.ReadIntervalTimeout, cto.ReadTotalTimeoutMultiplier,
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cto.ReadTotalTimeoutConstant, cto.WriteTotalTimeoutMultiplier, cto.WriteTotalTimeoutConstant);
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cto.ReadIntervalTimeout = 100;
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cto.ReadTotalTimeoutMultiplier = 1;
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cto.ReadTotalTimeoutConstant = 1;
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cto.WriteTotalTimeoutMultiplier = 0;
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cto.WriteTotalTimeoutConstant = 0;
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if (!SetCommTimeouts(gps_serial_hGPScomm, &cto)) {
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d_printf ("%s:%d gps_device_open: error during SetCommTimeouts", __FILE__, __LINE__);
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}
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return 1;
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};
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void gps_serial_device_close () {
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if (gps_serial_hGPScomm > 0)
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CloseHandle (gps_serial_hGPScomm);
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gps_serial_hGPScomm = 0;
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};
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/*
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* code for reading data
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*/
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extern int gdb_serial;
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int gps_serial_device_read (char *ptr, int ptrsize) {
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int error, finished = 0, i;
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static char inbuf[GPS_LINELEN];
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DWORD dwread = 0;
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/* to terminate pending read: close the event */
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if (ptr == NULL) {
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return -1;
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}
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/* prepare for new read */
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if (GPS_LINELEN > ptrsize) i = ptrsize;
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else i = GPS_LINELEN;
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if (!ReadFile (gps_serial_hGPScomm, inbuf, i, &dwread, NULL)) {
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if ((error = GetLastError()) != ERROR_IO_PENDING) {
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/* Error in communications; report it. */
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d_printf ("ReadFile Error : %d", error);
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return -1;
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}
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dwread = 0;
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}
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if ((dwread > ((uint32_t) GPS_LINELEN)) || (dwread > (uint32_t) ptrsize)) {
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d_printf ("%s:%d error dwread:%ud > %ud || %d", __FILE__, __LINE__, dwread, GPS_LINELEN, ptrsize);
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}
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else if (dwread > 0) {
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memcpy (ptr, inbuf, dwread);
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finished = dwread;
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}
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return finished;
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};
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