vdr 2.6.3
hdffcmd_base.c
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1/**********************************************************************
2 *
3 * HDFF firmware command interface library
4 *
5 * Copyright (C) 2011 Andreas Regel
6 *
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * as published by the Free Software Foundation; either version 2
10 * of the License, or (at your option) any later version.
11
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the
19 * Free Software Foundation, Inc.,
20 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
21 *
22 *********************************************************************/
23
24#include "hdffcmd_base.h"
25
27 HdffMessageGroup_t MsgGroup, HdffMessageId_t MsgId)
28{
29 BitBuffer_SetBits(MsgBuf, 16, 0); // length field will be set later
30 BitBuffer_SetBits(MsgBuf, 6, 0); // reserved
31 BitBuffer_SetBits(MsgBuf, 2, MsgType);
32 BitBuffer_SetBits(MsgBuf, 8, MsgGroup);
33 BitBuffer_SetBits(MsgBuf, 16, MsgId);
34}
35
36uint32_t HdffCmdSetLength(BitBuffer_t * MsgBuf)
37{
38 uint32_t length;
39
40 length = BitBuffer_GetByteLength(MsgBuf) - 2;
41 MsgBuf->Data[0] = (uint8_t) (length >> 8);
42 MsgBuf->Data[1] = (uint8_t) length;
43
44 return length + 2;
45}
void BitBuffer_SetBits(BitBuffer_t *BitBuffer, int NumBits, uint32_t Data)
Definition: bitbuffer.c:37
uint32_t BitBuffer_GetByteLength(BitBuffer_t *BitBuffer)
Definition: bitbuffer.c:76
void HdffCmdBuildHeader(BitBuffer_t *MsgBuf, HdffMessageType_t MsgType, HdffMessageGroup_t MsgGroup, HdffMessageId_t MsgId)
Definition: hdffcmd_base.c:26
uint32_t HdffCmdSetLength(BitBuffer_t *MsgBuf)
Definition: hdffcmd_base.c:36
HdffMessageGroup_t
Definition: hdffcmd_defs.h:36
HdffMessageType_t
Definition: hdffcmd_defs.h:28
HdffMessageId_t
Definition: hdffcmd_defs.h:47
uint8_t * Data
Definition: bitbuffer.h:31