Directory: | ./ |
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File: | pdserv/src/msrproto/Channel.cpp |
Date: | 2024-12-15 04:08:34 |
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Lines: | 23 | 23 | 100.0% |
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1 | /***************************************************************************** | ||
2 | * | ||
3 | * $Id$ | ||
4 | * | ||
5 | * Copyright 2010 Richard Hacker (lerichi at gmx dot net) | ||
6 | * | ||
7 | * This file is part of the pdserv library. | ||
8 | * | ||
9 | * The pdserv library is free software: you can redistribute it and/or modify | ||
10 | * it under the terms of the GNU Lesser General Public License as published | ||
11 | * by the Free Software Foundation, either version 3 of the License, or (at | ||
12 | * your option) any later version. | ||
13 | * | ||
14 | * The pdserv library is distributed in the hope that it will be useful, but | ||
15 | * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY | ||
16 | * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public | ||
17 | * License for more details. | ||
18 | * | ||
19 | * You should have received a copy of the GNU Lesser General Public License | ||
20 | * along with the pdserv library. If not, see <http://www.gnu.org/licenses/>. | ||
21 | * | ||
22 | *****************************************************************************/ | ||
23 | |||
24 | #include "Channel.h" | ||
25 | #include "XmlElement.h" | ||
26 | #include "../Signal.h" | ||
27 | #include "../Task.h" | ||
28 | |||
29 | using namespace MsrProto; | ||
30 | |||
31 | ///////////////////////////////////////////////////////////////////////////// | ||
32 | 2772 | Channel::Channel(const PdServ::Signal *s, size_t index, | |
33 | const PdServ::DataType& dtype, | ||
34 | const PdServ::DataType::DimType& dim, | ||
35 | 2772 | size_t offset): | |
36 | Variable(s, index, dtype, dim, offset), | ||
37 | 2772 | signal(s) | |
38 | { | ||
39 | // log_debug("new var %s idx=%u size=%zu, nelem=%zu offset=%zu", | ||
40 | // path().c_str(), index, dtype.size, dim.nelem, offset); | ||
41 | 2772 | } | |
42 | |||
43 | ///////////////////////////////////////////////////////////////////////////// | ||
44 | 152 | void Channel::setXmlAttributes( XmlElement &element, | |
45 | bool shortReply, bool hex, bool derived, const char *data, | ||
46 | std::streamsize precision, struct timespec* time) const | ||
47 | { | ||
48 | 152 | setAttributes(element, shortReply, derived); | |
49 | |||
50 |
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152 | if (!shortReply) { |
51 | // <channel name="/lan/World Time" alias="" index="0" typ="TDBL" | ||
52 | // datasize="8" bufsize="500" HZ="50" unit="" | ||
53 | // value="1283134199.93743"/> | ||
54 |
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152 | double freq = 1.0 / signal->sampleTime(); |
55 | |||
56 | // The MSR protocol wants a bufsize, the maximum number of | ||
57 | // values that can be retraced. This artificial limitation does | ||
58 | // not exist any more. Instead, choose a buffer size so that | ||
59 | // at a maximum of 10 seconds has to be stored. | ||
60 | 152 | size_t bufsize = 10 * std::max(1U, (unsigned int)(freq + 0.5)); | |
61 | |||
62 | // bufsize= | ||
63 |
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152 | XmlElement::Attribute(element, "bufsize") << bufsize; |
64 |
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152 | XmlElement::Attribute(element, "task") << signal->task->index; |
65 |
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152 | XmlElement::Attribute(element, "HZ") << freq; |
66 | } | ||
67 | |||
68 |
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152 | if (time) |
69 |
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57 | XmlElement::Attribute(element, "time") << *time; |
70 | |||
71 |
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152 | if (data) { |
72 |
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57 | if (hex) |
73 | 14 | XmlElement::Attribute(element, "hexvalue") | |
74 |
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14 | .hexDec(data + offset, memSize); |
75 | else | ||
76 | 100 | XmlElement::Attribute(element, "value") | |
77 |
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100 | .csv(this, data + offset, 1, precision); |
78 | } | ||
79 | |||
80 |
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152 | if (!shortReply) |
81 | 152 | addCompoundFields(element, dtype); | |
82 | 152 | } | |
83 |