git.zerfleddert.de Git - hmcfgusb/blob - hm.h

   1 /* HomeMatic defines and functions
   2  *
   3  * Copyright (c) 2014-15 Michael Gernoth <michael@gernoth.net>
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a copy
   6  * of this software and associated documentation files (the "Software"), to
   7  * deal in the Software without restriction, including without limitation the
   8  * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
   9  * sell copies of the Software, and to permit persons to whom the Software is
  10  * furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice shall be included in
  13  * all copies or substantial portions of the Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  18  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  21  * IN THE SOFTWARE.
  22  */
  23
  24 #define LEN     0x00
  25 #define MSGID   0x01
  26 #define CTL     0x02
  27 #define TYPE    0x03
  28 #define PAYLOAD 0x0a
  29
  30 #define SRC(buf)        (buf[0x06] | (buf[0x05] << 8) | (buf[0x04]) << 16)
  31 #define DST(buf)        (buf[0x09] | (buf[0x08] << 8) | (buf[0x07]) << 16)
  32
  33 #define SET_SRC(buf, src)       do { buf[0x04] = (src >> 16) & 0xff; buf[0x05] = (src >> 8) & 0xff; buf[0x06] = src & 0xff; } while(0)
  34 #define SET_DST(buf, dst)       do { buf[0x07] = (dst >> 16) & 0xff; buf[0x08] = (dst >> 8) & 0xff; buf[0x09] = dst & 0xff; } while(0)
  35
  36 #define SET_LEN_FROM_PAYLOADLEN(buf, payloadlen)        do { buf[0x00] = payloadlen + 0x09; } while(0)
  37 #define PAYLOADLEN(buf)                                 (buf[0x00] - 0x09)
  38
  39 uint8_t* hm_sign(uint8_t *key, uint8_t *challenge, uint8_t *m_frame, uint8_t *exp_auth, uint8_t *resp);