aboutsummaryrefslogtreecommitdiffstats
path: root/CAN-binder/low-can-binding/can/can-signals.cpp
blob: 96d0b7072c37680e8892f646ff6d9ddf059ceb15 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
/*
 * Copyright (C) 2015, 2016 "IoT.bzh"
 * Author "Romain Forlot" <romain.forlot@iot.bzh>
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *	 http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include <fnmatch.h>

#include "can-signals.hpp"

#include "../binding/configuration.hpp"
#include "../utils/signals.hpp"
#include "can-decoder.hpp"
#include "can-message.hpp"
#include "can-bus.hpp"
#include "../diagnostic/diagnostic-message.hpp"
#include "canutil/write.h"

std::string can_signal_t::prefix_ = "messages";

can_signal_t::can_signal_t(
	std::string generic_name,
	uint8_t bit_position,
	uint8_t bit_size,
	float factor,
	float offset,
	float min_value,
	float max_value,
	frequency_clock_t frequency,
	bool send_same,
	bool force_send_changed,
	std::map<uint8_t, std::string> states,
	bool writable,
	SignalDecoder decoder,
	SignalEncoder encoder,
	bool received)
	: parent_{nullptr},
	 generic_name_{ generic_name }
	, bit_position_{ bit_position }
	, bit_size_{ bit_size }
	, factor_{ factor }
	, offset_{ offset }
	, min_value_{min_value}
	, max_value_{max_value}
	, frequency_{frequency}
	, send_same_{send_same}
	, force_send_changed_{force_send_changed}
	, states_{states}
	, writable_{writable}
	, decoder_{decoder}
	, encoder_{encoder}
	, received_{received}
	, last_value_{.0f}
{}

/*can_signal_t::can_signal_t(const can_signal_t& b)
	: parent_{b.parent_},
	 generic_name_{ b.generic_name_}
	, bit_position_{ b.bit_position_}
	, bit_size_{ b.bit_size_}
	, factor_{ b.factor_ }
	, offset_{ b.offset_}
	, min_value_{b.min_value_}
	, max_value_{b.max_value_}
	, frequency_{b.frequency_}
	, send_same_{b.send_same_}
	, force_send_changed_{b.force_send_changed_}
	, states_{b.states_}
	, writable_{b.writable_}
	, decoder_{b.decoder_}
	, encoder_{b.encoder_}
	, received_{b.received_}
	, last_value_{b.last_value_}
{}*/

utils::socketcan_bcm_t can_signal_t::get_socket() const
{
	return socket_;
}

std::shared_ptr<can_message_definition_t> can_signal_t::get_message() const
{
	return parent_;
}

const std::string& can_signal_t::get_generic_name() const
{
	return generic_name_;
}

const std::string can_signal_t::get_name() const
{
	return prefix_ + "." + generic_name_;
}

const std::string& can_signal_t::get_prefix() const
{
	return prefix_;
}

uint8_t can_signal_t::get_bit_position() const
{
	return bit_position_;
}

uint8_t can_signal_t::get_bit_size() const
{
	return bit_size_;
}

float can_signal_t::get_factor() const
{
	return factor_;
}

float can_signal_t::get_offset() const
{
	return offset_;
}

float can_signal_t::get_min_value() const
{
	return min_value_;
}	

float can_signal_t::get_max_value() const
{
	return max_value_;
}

frequency_clock_t& can_signal_t::get_frequency()
{
	return frequency_;
}

bool can_signal_t::get_send_same() const
{
	return send_same_;
}

bool can_signal_t::get_force_send_changed() const
{
	return force_send_changed_;
}

const std::map<uint8_t, std::string>& can_signal_t::get_states() const
{
	return states_;
}

const std::string can_signal_t::get_states(uint8_t value)
{
	if (value < states_.size())
		return states_[value];
	return std::string();
}

size_t can_signal_t::get_state_count() const
{
	return states_.size();
}

bool can_signal_t::get_writable() const
{
	return writable_;
}

SignalDecoder& can_signal_t::get_decoder()
{
	return decoder_;
}

SignalEncoder& can_signal_t::get_encoder()
{
	return encoder_;
}

bool can_signal_t::get_received() const
{
	return received_;
}
float can_signal_t::get_last_value() const
{
	return last_value_;
}

void can_signal_t::set_parent(std::shared_ptr<can_message_definition_t> parent)
{
	parent_(parent);
}

void can_signal_t::set_prefix(std::string val)
{
	prefix_ = val;
}

void can_signal_t::set_received(bool r)
{
	received_ = r;
}

void can_signal_t::set_last_value(float val)
{
	last_value_ = val;
}

/// @brief Create a RX_SETUP receive job using the BCM socket.
///
/// @return 0 if ok else -1
int can_signal_t::create_rx_filter()
{
	// Make sure that socket has been opened.
	if(! socket_)
		socket_.open(
			get_message().get_bus_name());

	uint32_t can_id  = get_message().get_id();

	struct utils::simple_bcm_msg bcm_msg;
	struct can_frame cfd;

	memset(&cfd, 0, sizeof(cfd));
	memset(&bcm_msg.msg_head, 0, sizeof(bcm_msg.msg_head));
	float val = (float)(1 << bit_size_)-1;
	float freq = frequency_.frequency_to_period();
	if(freq <= 0)
		freq = 0.000001f;

	bcm_msg.msg_head.opcode  = RX_SETUP;
	bcm_msg.msg_head.can_id  = can_id;
	bcm_msg.msg_head.flags = SETTIMER|RX_NO_AUTOTIMER;
	bcm_msg.msg_head.ival2.tv_sec = long(freq);
	bcm_msg.msg_head.ival2.tv_usec = (freq - (long)freq) * 1000000;
	bcm_msg.msg_head.nframes = 1;
	bitfield_encode_float(val,
										bit_position_,
										bit_size_,
										factor_,
										offset_,
										cfd.data,
										CAN_MAX_DLEN);

	bcm_msg.frames = cfd;

	if(socket_ << bcm_msg)
		return 0;
	return -1;
}

void can_signal_t::read_socket()
{
	can_message_t msg;
	can_bus_t& cbm = configuration_t::instance().get_can_bus_manager();
	socket_ >> msg;
	std::lock_guard<std::mutex> can_message_lock(cbm.get_can_message_mutex());
	{ cbm.push_new_can_message(msg); }
	cbm.get_new_can_message_cv().notify_one();
}