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/*
* 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::uint8_t message_set_id,
std::uint8_t message_id,
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)
: message_set_id_{ message_set_id }
, message_id_{ message_id }
, 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}
{}
utils::socketcan_bcm_t can_signal_t::get_socket() const
{
return socket_;
}
const can_message_definition_t& can_signal_t::get_message() const
{
return configuration_t::instance().get_can_message_definition(message_set_id_, message_id_);
}
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_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;
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;
}
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