// Copyright (c) 2015, Tobias Mueller tm(at)tm3d.de // All rights reserved. // // 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. // * All advertising materials mentioning features or use of this // software must display the following acknowledgement: This product // includes software developed by tm3d.de and its contributors. // * Neither the name of tm3d.de nor the names of its contributors may // be used to endorse or promote products derived from this software // without specific prior written permission. // // 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. .comm crc,1 #define _CRC8_ .macro CRCS ; CRC beim Senden ;crc push r_crc lds r_crc,crc mov r_temp,r_crc andi r_temp,0x01 cp r_temp2,r_temp brne crc2 lsr r_crc ldi r_temp,0x8c eor r_crc,r_temp rjmp crce crc2: lsr r_crc crce: sts crc,r_crc pop r_crc .endm .macro CRCR; CRC beim Empfangen .endm .macro CRCInit1; CRC initialisierung bei READ_COMMAND .endm .macro CRCInit2; CRC initialisierung bei READ_DATA ldi r_temp,0 sts crc,r_temp .endm