[209] | 1 | //====================================================================== |
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| 2 | // |
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| 3 | // Project: XTIDE Universal BIOS, Serial Port Server |
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| 4 | // |
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| 5 | // File: Win32Serial.h - Microsoft Windows serial code |
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| 6 | // |
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| 7 | |
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[376] | 8 | // |
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[526] | 9 | // XTIDE Universal BIOS and Associated Tools |
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| 10 | // Copyright (C) 2009-2010 by Tomi Tilli, 2011-2013 by XTIDE Universal BIOS Team. |
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[376] | 11 | // |
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| 12 | // This program is free software; you can redistribute it and/or modify |
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| 13 | // it under the terms of the GNU General Public License as published by |
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| 14 | // the Free Software Foundation; either version 2 of the License, or |
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| 15 | // (at your option) any later version. |
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[526] | 16 | // |
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[376] | 17 | // This program is distributed in the hope that it will be useful, |
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| 18 | // but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 19 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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[526] | 20 | // GNU General Public License for more details. |
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[376] | 21 | // Visit http://www.gnu.org/licenses/old-licenses/gpl-2.0.html |
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| 22 | // |
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| 23 | |
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[219] | 24 | #include <stdio.h> |
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[209] | 25 | #include "windows.h" |
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| 26 | #include "../library/library.h" |
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| 27 | |
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| 28 | #define PIPENAME "\\\\.\\pipe\\xtide" |
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| 29 | |
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[293] | 30 | class SerialAccess |
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[209] | 31 | { |
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| 32 | public: |
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[219] | 33 | void Connect( char *name, struct baudRate *p_baudRate ) |
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| 34 | { |
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| 35 | char buff1[20], buff2[1024]; |
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[209] | 36 | |
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[219] | 37 | baudRate = p_baudRate; |
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[209] | 38 | |
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[219] | 39 | pipe = NULL; |
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[293] | 40 | |
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[219] | 41 | if( !name ) |
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| 42 | { |
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| 43 | for( int t = 1; t <= 30 && !name; t++ ) |
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| 44 | { |
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| 45 | sprintf( buff1, "COM%d", t ); |
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| 46 | if( QueryDosDeviceA( buff1, buff2, sizeof(buff2) ) ) |
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| 47 | name = buff1; |
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| 48 | } |
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| 49 | if( !name ) |
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| 50 | log( -1, "No physical COM ports found" ); |
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| 51 | } |
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| 52 | |
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[258] | 53 | if( name[0] == '\\' && name[1] == '\\' ) |
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[219] | 54 | { |
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[258] | 55 | log( 0, "Opening named pipe %s (simulating %s baud)", name, baudRate->display ); |
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[293] | 56 | |
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[258] | 57 | pipe = CreateNamedPipeA( name, PIPE_ACCESS_DUPLEX, PIPE_TYPE_BYTE|PIPE_REJECT_REMOTE_CLIENTS, 2, 1024, 1024, 0, NULL ); |
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[225] | 58 | if( pipe == INVALID_HANDLE_VALUE ) |
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[219] | 59 | log( -1, "Could not CreateNamedPipe " PIPENAME ); |
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[293] | 60 | |
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[219] | 61 | if( !ConnectNamedPipe( pipe, NULL ) ) |
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| 62 | log( -1, "Could not ConnectNamedPipe" ); |
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| 63 | |
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[284] | 64 | if( baudRate->divisor > 0x80 ) |
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[219] | 65 | log( -1, "Cannot simulate baud rates with hardware multipliers" ); |
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| 66 | |
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| 67 | speedEmulation = 1; |
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| 68 | resetConnection = 1; |
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| 69 | } |
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| 70 | else |
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| 71 | { |
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| 72 | if( QueryDosDeviceA( name, buff2, sizeof(buff2) ) ) |
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| 73 | { |
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| 74 | COMMTIMEOUTS timeouts; |
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| 75 | DCB dcb; |
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| 76 | |
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[258] | 77 | log( 0, "Opening %s (%s baud)", name, baudRate->display ); |
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[293] | 78 | |
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[219] | 79 | pipe = CreateFileA( name, GENERIC_READ|GENERIC_WRITE, 0, 0, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, 0 ); |
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[225] | 80 | if( pipe == INVALID_HANDLE_VALUE ) |
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[219] | 81 | log( -1, "Could not Open \"%s\"", name ); |
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[293] | 82 | |
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[219] | 83 | FillMemory(&dcb, sizeof(dcb), 0); |
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| 84 | FillMemory(&timeouts, sizeof(timeouts), 0); |
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| 85 | |
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| 86 | dcb.DCBlength = sizeof(dcb); |
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| 87 | dcb.BaudRate = baudRate->rate; |
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| 88 | dcb.ByteSize = 8; |
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| 89 | dcb.StopBits = ONESTOPBIT; |
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| 90 | dcb.Parity = NOPARITY; |
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| 91 | if( !SetCommState( pipe, &dcb ) ) |
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[258] | 92 | { |
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| 93 | char *msg = ""; |
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| 94 | COMMPROP comProp; |
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[219] | 95 | |
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[258] | 96 | if( GetCommProperties( pipe, &comProp ) ) |
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| 97 | { |
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| 98 | if( comProp.dwMaxBaud != BAUD_USER ) |
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| 99 | msg = "\n On this COM port, baud rate is limited to 115.2K"; |
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| 100 | } |
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[293] | 101 | log( -1, "Could not SetCommState: baud rate selected may not be available%s", msg ); |
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[258] | 102 | } |
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| 103 | |
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[219] | 104 | if( !SetCommTimeouts( pipe, &timeouts ) ) |
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| 105 | log( -1, "Could not SetCommTimeouts" ); |
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| 106 | } |
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| 107 | else |
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| 108 | { |
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| 109 | char logbuff[ 1024 ]; |
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| 110 | |
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[258] | 111 | EnumerateCOMPorts( logbuff, 1024 ); |
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[293] | 112 | |
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[258] | 113 | log( -1, "Serial port '%s' not found, detected COM ports: %s", name, logbuff ); |
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[219] | 114 | } |
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| 115 | } |
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| 116 | } |
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| 117 | |
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[258] | 118 | static void EnumerateCOMPorts( char *logbuff, int logbuffLen ) |
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| 119 | { |
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| 120 | int found = 0; |
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| 121 | char buff1[20], buff2[1024]; |
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| 122 | |
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| 123 | logbuff[0] = 0; |
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| 124 | |
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| 125 | for( int t = 1; t <= 40 && strlen(logbuff) < (logbuffLen - 40); t++ ) |
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| 126 | { |
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| 127 | sprintf( buff1, "COM%d", t ); |
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| 128 | if( QueryDosDeviceA( buff1, buff2, sizeof(buff2) ) ) |
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| 129 | { |
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| 130 | if( found ) |
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| 131 | strcat( logbuff, ", " ); |
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| 132 | strcat( logbuff, buff1 ); |
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| 133 | found = 1; |
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| 134 | } |
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| 135 | } |
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| 136 | |
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| 137 | if( !found ) |
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| 138 | strcat( logbuff, "(none)" ); |
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| 139 | } |
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| 140 | |
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[219] | 141 | void Disconnect() |
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| 142 | { |
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| 143 | if( pipe ) |
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| 144 | { |
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| 145 | CloseHandle( pipe ); |
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| 146 | pipe = NULL; |
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| 147 | } |
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| 148 | } |
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| 149 | |
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| 150 | unsigned long readCharacters( void *buff, unsigned long len ) |
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| 151 | { |
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| 152 | unsigned long readLen; |
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| 153 | int ret; |
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| 154 | |
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| 155 | ret = ReadFile( pipe, buff, len, &readLen, NULL ); |
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| 156 | |
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| 157 | if( !ret || readLen == 0 ) |
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| 158 | { |
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| 159 | if( GetLastError() == ERROR_BROKEN_PIPE ) |
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| 160 | return( 0 ); |
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| 161 | else |
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| 162 | log( -1, "read serial failed (error code %d)", GetLastError() ); |
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| 163 | } |
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| 164 | |
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| 165 | return( readLen ); |
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| 166 | } |
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| 167 | |
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| 168 | int writeCharacters( void *buff, unsigned long len ) |
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| 169 | { |
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| 170 | unsigned long writeLen; |
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| 171 | int ret; |
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| 172 | |
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| 173 | ret = WriteFile( pipe, buff, len, &writeLen, NULL ); |
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| 174 | |
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| 175 | if( !ret || len != writeLen ) |
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| 176 | { |
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| 177 | if( GetLastError() == ERROR_BROKEN_PIPE ) |
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| 178 | return( 0 ); |
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| 179 | else |
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| 180 | log( -1, "write serial failed (error code %d)", GetLastError() ); |
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| 181 | } |
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| 182 | |
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| 183 | return( 1 ); |
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| 184 | } |
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| 185 | |
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| 186 | SerialAccess() |
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| 187 | { |
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| 188 | pipe = NULL; |
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| 189 | speedEmulation = 0; |
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| 190 | resetConnection = 0; |
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| 191 | baudRate = NULL; |
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| 192 | } |
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| 193 | |
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| 194 | ~SerialAccess() |
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| 195 | { |
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| 196 | Disconnect(); |
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| 197 | } |
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| 198 | |
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| 199 | int speedEmulation; |
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| 200 | int resetConnection; |
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| 201 | |
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| 202 | struct baudRate *baudRate; |
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| 203 | |
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[209] | 204 | private: |
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| 205 | HANDLE pipe; |
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| 206 | }; |
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| 207 | |
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