diff --git a/dmcomm/COPYING b/dmcomm/COPYING new file mode 100644 index 0000000..f288702 --- /dev/null +++ b/dmcomm/COPYING @@ -0,0 +1,674 @@ + GNU GENERAL PUBLIC LICENSE + Version 3, 29 June 2007 + + Copyright (C) 2007 Free Software Foundation, Inc. + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The GNU General Public License is a free, copyleft license for +software and other kinds of works. + + The licenses for most software and other practical works are designed +to take away your freedom to share and change the works. By contrast, +the GNU General Public License is intended to guarantee your freedom to +share and change all versions of a program--to make sure it remains free +software for all its users. We, the Free Software Foundation, use the +GNU General Public License for most of our software; it applies also to +any other work released this way by its authors. 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Interpretation of Sections 15 and 16. + + If the disclaimer of warranty and limitation of liability provided +above cannot be given local legal effect according to their terms, +reviewing courts shall apply local law that most closely approximates +an absolute waiver of all civil liability in connection with the +Program, unless a warranty or assumption of liability accompanies a +copy of the Program in return for a fee. + + END OF TERMS AND CONDITIONS + + How to Apply These Terms to Your New Programs + + If you develop a new program, and you want it to be of the greatest +possible use to the public, the best way to achieve this is to make it +free software which everyone can redistribute and change under these terms. + + To do so, attach the following notices to the program. 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If not, see . + +Also add information on how to contact you by electronic and paper mail. + + If the program does terminal interaction, make it output a short +notice like this when it starts in an interactive mode: + + Copyright (C) + This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. + This is free software, and you are welcome to redistribute it + under certain conditions; type `show c' for details. + +The hypothetical commands `show w' and `show c' should show the appropriate +parts of the General Public License. Of course, your program's commands +might be different; for a GUI interface, you would use an "about box". + + You should also get your employer (if you work as a programmer) or school, +if any, to sign a "copyright disclaimer" for the program, if necessary. +For more information on this, and how to apply and follow the GNU GPL, see +. + + The GNU General Public License does not permit incorporating your program +into proprietary programs. If your program is a subroutine library, you +may consider it more useful to permit linking proprietary applications with +the library. If this is what you want to do, use the GNU Lesser General +Public License instead of this License. But first, please read +. diff --git a/dmcomm/dmcomm.ino b/dmcomm/dmcomm.ino index c0e3149..95d16e9 100644 --- a/dmcomm/dmcomm.ino +++ b/dmcomm/dmcomm.ino @@ -1,27 +1,20 @@ /* - Copyright (c) 2014, BladeSabre - - Redistribution and use in source and binary forms, with or without - modification, are permitted provided that the following conditions are - met: - - * Redistributions of source code must retain the above copyright notice, - this list of conditions and the following disclaimer. - * Redistributions in binary form must reproduce the above copyright - notice, this list of conditions and the following disclaimer in the - documentation and/or other materials provided with the distribution. - - THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS - IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED - TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A - PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER - OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, - EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, - PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR - PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF - LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING - NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS - SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + Project using Arduino to communicate with Digimon toys + + Copyright (c) 2014,2017,2018 BladeSabre + + 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 3 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 . */ @@ -56,8 +49,7 @@ const unsigned int ended_capture_ms = 500; //buffer sizes const byte serial_buffer_size = 80; -const byte send_buffer_size = 12; -const int log_length = 1200; +const int log_length = 1000; //bytes for log protocol @@ -418,6 +410,80 @@ void sendPacket(unsigned int bits) { //high-level communication functions +//read next packet from buffer; write bits to send into bitsNew and update checksum +//bitsRcvd is the packet just received (ignored except with ^ token) +//return number of bytes read from buffer on success, 0 if empty, -1 on failure +int makePacket(unsigned int * bitsNew, char * checksum, unsigned int bitsRcvd, byte * buffer) { + char digits[4]; + char dCur; + char dCurChk = -1; + char chkTarget = -1; + int bufCur = 1; + byte b1, b2; + char val1, val2; + if (buffer[0] == '\0') { + return 0; + } + //require first character dash + if (buffer[0] != '-') { + return -1; + } + //unpack bitsRcvd into digits + for (dCur = 3; dCur >= 0; dCur --) { + digits[dCur] = bitsRcvd & 0xF; + bitsRcvd >>= 4; + } + for (dCur = 0; dCur < 4; dCur ++) { + b1 = buffer[bufCur]; + if (b1 == '\0') { + return -1; + } + bufCur ++; + b2 = buffer[bufCur]; + val1 = hex2val(b1); + val2 = hex2val(b2); + if (b1 == '@' || b1 == '^') { + //expect a hex digit to follow + if (val2 == -1) { + return -1; + } + if (b1 == '@') { + //here is check digit + dCurChk = dCur; + chkTarget = val2; + } else { + //xor received bits with new value + digits[dCur] ^= val2; + } + bufCur ++; //extra digit taken + } else { + //expect this to be a hex digit + if (val1 == -1) { + return -1; + } + //store (overwrite) digit + digits[dCur] = val1; + } + if (b1 != '@') { + //update checksum + (*checksum) += digits[dCur]; + (*checksum) &= 0xF; + } + } + if (dCurChk != -1) { + //we have a check digit + digits[dCurChk] = (chkTarget - (*checksum)) & 0xF; + (*checksum) = chkTarget; + } + //pack digits into bitsNew + (*bitsNew) = 0; + for (dCur = 0; dCur < 4; dCur ++) { + (*bitsNew) <<= 4; + (*bitsNew) |= digits[dCur]; + } + return bufCur; +} + //just listen for sequences of incoming messages, //e.g. if only the first packet is wanted, or listening to 2 toys void commListen(boolean X) { @@ -435,22 +501,37 @@ void commListen(boolean X) { } //interact with the toy on the other end of the connection -void commBasic(boolean X, boolean goFirst, byte length, unsigned int * toSend) { - byte i; +void commBasic(boolean X, boolean goFirst, byte * buffer) { + unsigned int bitsRcvd = 0; + unsigned int bitsToSend = 0; + char checksum = 0; + int bufCur = 2; + int result; initDmTimes(X); if (goFirst) { delay(gofirst_repeat_ms); //delayByTicks((long)gofirst_repeat_ms * 1000); } else { - if (rcvPacket(listen_timeout)) { + if (rcvPacketGet(&bitsRcvd, listen_timeout)) { Serial.println(); return; } } ledOff(); - for (i = 0; i < length; i ++) { - sendPacket(toSend[i]); - if (rcvPacket(0)) { + while (1) { + result = makePacket(&bitsToSend, &checksum, bitsRcvd, buffer + bufCur); + if (result == 0) { + //the end + break; + } + if (result == -1) { + //makePacket error + Serial.write("s:?"); + break; + } + bufCur += result; + sendPacket(bitsToSend); + if (rcvPacketGet(&bitsRcvd, 0)) { break; } } @@ -460,20 +541,8 @@ void commBasic(boolean X, boolean goFirst, byte length, unsigned int * toSend) { } - //serial processing -//convert buffer to upper case in-place -void upperCase(byte length, char * buffer) { - byte i; - for (i = 0; i < length; i ++) { - if (buffer[i] >= 'a' && buffer[i] <= 'z') { - buffer[i] -= 'a'; - buffer[i] += 'A'; - } - } -} - //return integer value of hex digit character, or -1 if not a hex digit char hex2val(char hexdigit) { char value; @@ -489,17 +558,6 @@ char hex2val(char hexdigit) { return value; } -//return integer value of 4 hex digit string, assuming correct input -unsigned int hexQuad2int(byte * str) { - char i; - unsigned int result = 0; - for (i = 0; i < 4; i ++) { - result <<= 4; - result += hex2val(str[i]); - } - return result; -} - //print number onto serial as hex, with specified number of digits //(if too few digits, will take least significant) void serialPrintHex(unsigned int number, char digits) { @@ -517,6 +575,7 @@ void serialPrintHex(unsigned int number, char digits) { } //try to read from serial into buffer; +//read until end-of-line and replace that with a null terminator //return 0 on failure, or positive integer for number of characters read char serialRead(byte * buffer) { unsigned long timeStart; @@ -543,11 +602,12 @@ char serialRead(byte * buffer) { buffer[i] = incomingByte; i += 1; } - } while (incomingByte != '\r' && incomingByte != '\n' && i < serial_buffer_size); + } while (incomingByte != '\r' && incomingByte != '\n' && i < serial_buffer_size - 1); if (incomingByte != '\r' && incomingByte != '\n') { Serial.println("too long"); return 0; } + buffer[i] = '\0'; return i; } @@ -560,12 +620,10 @@ void loop() { static boolean listenOnly; static boolean goFirst; static byte numPackets; - static unsigned int toSend[send_buffer_size]; static byte buffer[serial_buffer_size]; int i, j; byte bufCursor; - byte tsCursor; //process serial input i = serialRead(buffer); @@ -617,21 +675,20 @@ void loop() { active = false; Serial.print("?"); } - //buffer[2] discarded } if (i < 7 && !listenOnly) { active = false; } if (active && !listenOnly) { - numPackets = (i - 2) / 5; - if (numPackets > send_buffer_size) { - numPackets = send_buffer_size; - } - for (tsCursor = 0; tsCursor < numPackets; tsCursor ++) { - toSend[tsCursor] = hexQuad2int(buffer + (tsCursor*5) + 3); - Serial.print("-"); - serialPrintHex(toSend[tsCursor], 4); + numPackets = 0; + for(i = 2; buffer[i] != '\0'; i ++) { + if (buffer[i] == '-') { + numPackets ++; + } } + Serial.print("-["); + Serial.print(numPackets); + Serial.print(" packets]"); } if (!active) { Serial.print("N"); @@ -645,7 +702,7 @@ void loop() { if (listenOnly) { commListen(X); } else { - commBasic(X, goFirst, numPackets, toSend); + commBasic(X, goFirst, buffer); } if (debug) { Serial.print("c:"); diff --git a/readme.txt b/readme.txt index 4bbc98c..109700a 100644 --- a/readme.txt +++ b/readme.txt @@ -4,7 +4,8 @@ Project using Arduino to communicate with Digimon toys by BladeSabre, bladethecoder@gmail.com Licences: -C and Python code: BSD (see code headers) +C code: GPLv3+ (see file dmcomm/COPYING) +Python code: BSD (see code headers) Documentation, diagrams and photos: CC-BY-SA ( https://creativecommons.org/licenses/by-sa/4.0/ ) This project is provided with absolutely no warranty! The author is not responsible for any damage to your property that may result from following these instructions.