vdr  2.2.0
hdffcmd_base.c
Go to the documentation of this file.
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 
36 uint32_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 }
HdffMessageId_t
Definition: hdffcmd_defs.h:46
void BitBuffer_SetBits(BitBuffer_t *BitBuffer, int NumBits, uint32_t Data)
Definition: bitbuffer.c:37
uint32_t HdffCmdSetLength(BitBuffer_t *MsgBuf)
Definition: hdffcmd_base.c:36
void HdffCmdBuildHeader(BitBuffer_t *MsgBuf, HdffMessageType_t MsgType, HdffMessageGroup_t MsgGroup, HdffMessageId_t MsgId)
Definition: hdffcmd_base.c:26
HdffMessageGroup_t
Definition: hdffcmd_defs.h:35
uint32_t BitBuffer_GetByteLength(BitBuffer_t *BitBuffer)
Definition: bitbuffer.c:76
HdffMessageType_t
Definition: hdffcmd_defs.h:27
uint8_t * Data
Definition: bitbuffer.h:31