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
|
/*
* 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 "obd2-signals.hpp"
#include "../configuration.hpp"
#include "../utils/signals.hpp"
const char *UNIT_NAMES[10] = {
"POURCENT",
"DEGREES_CELSIUS",
"KPA",
"RPM",
"GRAMS_SEC",
"SECONDS",
"KM",
"KM_H",
"PA",
"NM"
};
obd2_signal_t::obd2_signal_t(uint8_t pid, const char* generic_name, const int min, const int max, enum UNIT unit, int frequency, bool supported)
: pid_{pid}, generic_name_{generic_name}, min_{min}, max_{max}, unit_{unit}, frequency_{frequency}, supported_{supported}
{
}
uint32_t obd2_signal_t::get_pid()
{
return (uint32_t)pid_;
}
const std::string& obd2_signal_t::get_generic_name() const
{
return generic_name_;
}
const std::string obd2_signal_t::get_name() const
{
return prefix_ + "." + generic_name_;
}
const std::string& obd2_signal_t::get_prefix() const
{
return prefix_;
}
int obd2_signal_t::get_frequency() const
{
return frequency_;
}
void obd2_signal_t::set_prefix(std::string val)
{
prefix_ = val;
}
/**
* @brief Build a DiagnosticRequest struct to be passed
* to diagnostic manager instance.
*/
const DiagnosticRequest obd2_signal_t::build_diagnostic_request()
{
return {/*arbitration_id: */OBD2_FUNCTIONAL_BROADCAST_ID,
/*mode: */0x1,
/*has_pid: */true,
/*pid: */pid_,
/*pid_length: */0,
/*payload[]: */{0},
/*payload_length: */0,
/*no_frame_padding: */false,
/*DiagnosticRequestType: */DiagnosticRequestType::DIAGNOSTIC_REQUEST_TYPE_PID };
}
bool obd2_signal_t::is_obd2_response(can_message_t can_message)
{
/*
if(can_message.get_id() >= 0x7E8 && can_message.get_id() <= 0x7EF)
{
openxc_VehicleMessage message = {0};
message.has_type = true;
message.type = openxc_VehicleMessage_Type_DIAGNOSTIC;
message.has_diagnostic_response = true;
message.diagnostic_response = {0};
message.diagnostic_response.has_bus = true;
message.diagnostic_response.bus = bus->address;
message.diagnostic_response.has_message_id = true;
//7DF should respond with a random message id between 7e8 and 7ef
//7E0 through 7E7 should respond with a id that is 8 higher (7E0->7E8)
if(can_message.get_id() == 0x7DF)
{
message.diagnostic_response.message_id = rand()%(0x7EF-0x7E8 + 1) + 0x7E8;
}
else if(commandRequest->message_id >= 0x7E0 && commandRequest->message_id <= 0x7E7)
{
message.diagnostic_response.message_id = commandRequest->message_id + 8;
}
message.diagnostic_response.has_mode = true;
message.diagnostic_response.mode = commandRequest->mode;
if(commandRequest->has_pid)
{
message.diagnostic_response.has_pid = true;
message.diagnostic_response.pid = commandRequest->pid;
}
message.diagnostic_response.has_value = true;
message.diagnostic_response.value = rand() % 100;
pipeline::publish(&message, &getConfiguration()->pipeline);
}
else //If it's outside the range, the command_request will return false
{
debug("Sent message ID is outside the valid range for emulator (7DF to 7E7)");
status=false;
}
return false;
*/
return false;
}
/**
* @brief Check if a request is an OBD-II PID request.
*
* @return true if the request is a mode 1 request and it has a 1 byte PID.
*/
bool obd2_signal_t::is_obd2_request(DiagnosticRequest* request)
{
return request->mode == 0x1 && request->has_pid && request->pid < 0xff;
}
/**
* @brief Check if requested signal name is an obd2 pid
*
* @return true if name began with obd2 else false.
*/
bool obd2_signal_t::is_obd2_signal(const char *name)
{
if(fnmatch("obd2.*", name, FNM_CASEFOLD) == 0)
return true;
return false;
}
/**
* @brief Decode the payload of an OBD-II PID.
*
* This function matches the type signature for a DiagnosticResponseDecoder, so
* it can be used as the decoder for a DiagnosticRequest. It returns the decoded
* value of the PID, using the standard formulas (see
* http://en.wikipedia.org/wiki/OBD-II_PIDs#Mode_01).
*
* @param[in] response - the received DiagnosticResponse (the data is in response.payload,
* a byte array). This is most often used when the byte order is
* signiticant, i.e. with many OBD-II PID formulas.
* @param[in] parsed_payload - the entire payload of the response parsed as an int.
*/
float obd2_signal_t::decode_obd2_response(const DiagnosticResponse* response, float parsedPayload)
{
return diagnostic_decode_obd2_pid(response);
}
|
