diff options
Diffstat (limited to 'low-can-binding/can/can-decoder.cpp')
| -rw-r--r-- | low-can-binding/can/can-decoder.cpp | 89 |
1 files changed, 47 insertions, 42 deletions
diff --git a/low-can-binding/can/can-decoder.cpp b/low-can-binding/can/can-decoder.cpp index 3c811be6..7d6ae2a1 100644 --- a/low-can-binding/can/can-decoder.cpp +++ b/low-can-binding/can/can-decoder.cpp @@ -27,7 +27,7 @@ /// value. /// /// @param[in] signal - The signal to be parsed from the data. -/// @param[in] message - can_message_t to parse +/// @param[in] message - message_t to parse /// /// @return Returns the raw value of the signal parsed as a bitfield from the given byte /// array. @@ -94,7 +94,7 @@ float decoder_t::parse_signal_bitfield(signal_t& signal, std::shared_ptr<message /// used directly in the signal_t.decoder field. /// /// @param[in] signal - The details of the signal that contains the state mapping. -/// @param[in] value - The numerical value that will be wrapped in a DynamicField. +/// @param[in] message - The message with data to decode. /// @param[out] send - An output argument that will be set to false if the value should /// not be sent for any reason. /// @@ -102,10 +102,19 @@ float decoder_t::parse_signal_bitfield(signal_t& signal, std::shared_ptr<message /// its numeric value. The 'send' argument will not be modified as this decoder /// always succeeds. /// -openxc_DynamicField decoder_t::decode_noop(signal_t& signal, float value, bool* send) +openxc_DynamicField decoder_t::decode_noop(signal_t& signal, std::shared_ptr<message_t> message, bool* send) { + float value = decoder_t::parse_signal_bitfield(signal, message); + AFB_DEBUG("Decoded message from parse_signal_bitfield: %f", value); openxc_DynamicField decoded_value = build_DynamicField(value); + // Don't send if they is no changes + if ((signal.get_last_value() == value && !signal.get_send_same()) || !*send ) + { + *send = false; + } + signal.set_last_value(value); + return decoded_value; } /// @brief Coerces a numerical value to a boolean. @@ -114,7 +123,7 @@ openxc_DynamicField decoder_t::decode_noop(signal_t& signal, float value, bool* /// used directly in the signal_t.decoder field. /// /// @param[in] signal - The details of the signal that contains the state mapping. -/// @param[in] value - The numerical value that will be converted to a boolean. +/// @param[in] message - The message with data to decode. /// @param[out] send - An output argument that will be set to false if the value should /// not be sent for any reason. /// @@ -122,10 +131,20 @@ openxc_DynamicField decoder_t::decode_noop(signal_t& signal, float value, bool* /// is 0.0, otherwise true. The 'send' argument will not be modified as this /// decoder always succeeds. /// -openxc_DynamicField decoder_t::decode_boolean(signal_t& signal, float value, bool* send) +openxc_DynamicField decoder_t::decode_boolean(signal_t& signal, std::shared_ptr<message_t> message, bool* send) { + float value = decoder_t::parse_signal_bitfield(signal, message); + AFB_DEBUG("Decoded message from parse_signal_bitfield: %f", value); openxc_DynamicField decoded_value = build_DynamicField(value == 0.0 ? false : true); + // Don't send if they is no changes + if ((signal.get_last_value() == value && !signal.get_send_same()) || !*send ) + { + *send = false; + } + signal.set_last_value(value); + + return decoded_value; } /// @brief Update the metadata for a signal and the newly received value. @@ -136,17 +155,19 @@ openxc_DynamicField decoder_t::decode_boolean(signal_t& signal, float value, boo /// This function always flips 'send' to false. /// /// @param[in] signal - The details of the signal that contains the state mapping. -/// @param[in] value - The numerical value that will be converted to a boolean. +/// @param[in] message - The message with data to decode. /// @param[out] send - This output argument will always be set to false, so the caller will /// know not to publish this value to the pipeline. /// /// @return Return value is undefined. /// -openxc_DynamicField decoder_t::decode_ignore(signal_t& signal, float value, bool* send) +openxc_DynamicField decoder_t::decode_ignore(signal_t& signal, std::shared_ptr<message_t> message, bool* send) { + float value = decoder_t::parse_signal_bitfield(signal, message); if(send) *send = false; + signal.set_last_value(value); openxc_DynamicField decoded_value; return decoded_value; @@ -159,7 +180,7 @@ openxc_DynamicField decoder_t::decode_ignore(signal_t& signal, float value, bool /// used directly in the signal_t.decoder field. /// /// @param[in] signal - The details of the signal that contains the state mapping. -/// @param[in] value - The numerical value that should map to a state. +/// @param[in] message - The message with data to decode. /// @param[out] send - An output argument that will be set to false if the value should /// not be sent for any reason. /// @@ -167,8 +188,10 @@ openxc_DynamicField decoder_t::decode_ignore(signal_t& signal, float value, bool /// the signal. If an equivalent isn't found, send is sent to false and the /// return value is undefined. /// -openxc_DynamicField decoder_t::decode_state(signal_t& signal, float value, bool* send) +openxc_DynamicField decoder_t::decode_state(signal_t& signal, std::shared_ptr<message_t> message, bool* send) { + float value = decoder_t::parse_signal_bitfield(signal, message); + AFB_DEBUG("Decoded message from parse_signal_bitfield: %f", value); const std::string signal_state = signal.get_states((uint8_t)value); openxc_DynamicField decoded_value = build_DynamicField(signal_state); if(signal_state.size() <= 0) @@ -176,6 +199,15 @@ openxc_DynamicField decoder_t::decode_state(signal_t& signal, float value, bool* *send = false; AFB_ERROR("No state found with index: %d", (int)value); } + + // Don't send if they is no changes + if ((signal.get_last_value() == value && !signal.get_send_same()) || !*send ) + { + *send = false; + } + signal.set_last_value(value); + + return decoded_value; } @@ -187,7 +219,7 @@ openxc_DynamicField decoder_t::decode_state(signal_t& signal, float value, bool* /// will be passed to the decoder before publishing. /// /// @param[in] signal - The details of the signal to decode and forward. -/// @param[in] message - The received CAN message that should contain this signal. +/// @param[in] message - The message with data to decode. /// @param[out] send - An output parameter that will be flipped to false if the value could /// not be decoded. /// @@ -196,22 +228,13 @@ openxc_DynamicField decoder_t::decode_state(signal_t& signal, float value, bool* /// openxc_DynamicField decoder_t::translate_signal(signal_t& signal, std::shared_ptr<message_t> message, bool* send) { - float value = decoder_t::parse_signal_bitfield(signal, message); - AFB_DEBUG("Decoded message from parse_signal_bitfield: %f", value); // Must call the decoders every time, regardless of if we are going to // decide to send the signal or not. openxc_DynamicField decoded_value = decoder_t::decode_signal(signal, - value, send); + message, send); signal.set_received(true); - - // Don't send if they is no changes - if ((signal.get_last_value() == value && !signal.get_send_same()) || !*send ) - { - *send = false; - } - signal.set_last_value(value); signal.set_timestamp(message->get_timestamp()); signal.get_message()->set_last_value(message); return decoded_value; @@ -224,41 +247,23 @@ openxc_DynamicField decoder_t::translate_signal(signal_t& signal, std::shared_pt /// will be passed to the decoder before returning. /// /// @param[in] signal - The details of the signal to decode and forward. -/// @param[in] value - The numerical value that will be converted to a boolean. +/// @param[in] message - The message with data to decode. /// @param[out] send - An output parameter that will be flipped to false if the value could /// not be decoded. /// /// @return The decoder returns an openxc_DynamicField, which may contain a number, /// string or boolean. If 'send' is false, the return value is undefined. /// -openxc_DynamicField decoder_t::decode_signal( signal_t& signal, float value, bool* send) +openxc_DynamicField decoder_t::decode_signal( signal_t& signal, std::shared_ptr<message_t> message, bool* send) { signal_decoder decoder = signal.get_decoder() == nullptr ? decode_noop : signal.get_decoder(); + openxc_DynamicField decoded_value = decoder(signal, - value, send); + message, send); return decoded_value; } -/// @brief Decode a transformed, human readable value from an raw CAN signal -/// already parsed from a CAN message. -/// -/// This is the same as decode_signal but you must parse the bitfield value of the signal from the CAN -/// message yourself. This is useful if you need that raw value for something -/// else. -/// -/// @param[in] signal - The details of the signal to decode and forward. -/// @param[in] message - Raw CAN message to decode -/// @param[out] send - An output parameter that will be flipped to false if the value could -/// not be decoded. -/// -openxc_DynamicField decoder_t::decode_signal( signal_t& signal, std::shared_ptr<message_t> message, bool* send) -{ - float value = parse_signal_bitfield(signal, message); - return decode_signal(signal, value, send); -} - - /// /// @brief Decode the payload of an OBD-II PID. /// |