########################################################################### # # Copyright (c) 2021-2024 Diality Inc. - All Rights Reserved. # # THIS CODE MAY NOT BE COPIED OR REPRODUCED IN ANY FORM, IN PART OR IN # WHOLE, WITHOUT THE EXPLICIT PERMISSION OF THE COPYRIGHT OWNER. # # @file temperatures.py # # @author (last) Micahel Garthwaite # @date (last) 03-Mar-2023 # @author (original) Dara Navaei # @date (original) 03-Aug-2021 # ############################################################################ import struct from ..utils.conversions import integer_to_bytearray, float_to_bytearray from ..common.msg_defs import MsgIds, MsgFieldPositions from .constants import RESET, NO_RESET from ..protocols.CAN import (DenaliMessage, DenaliChannels) from ..utils.base import AbstractSubSystem, publish, DialinEnum from ..utils.checks import check_broadcast_interval_override_ms from logging import Logger from enum import unique @unique class HDTemperaturesNames(DialinEnum): THERMISTOR_ONBOARD_NTC = 0 THERMISTOR_POWER_SUPPLY_1 = 1 TEMPSENSOR_FPGA_BOARD = 2 TEMPSENSOR_VENOUS_PRESS_TEMP = 3 TEMPSENSOR_ARTERIAL_PRESS_TEMP = 4 class HDTemperatures(AbstractSubSystem): """ @brief Hemodialysis Device (HD) Dialin API sub-class for HD temperatures related commands. """ def __init__(self, can_interface, logger: Logger): """ HDTemperatures constructor """ super().__init__() self.can_interface = can_interface self.logger = logger if self.can_interface is not None: channel_id = DenaliChannels.hd_sync_broadcast_ch_id msg_id = MsgIds.MSG_ID_HD_TEMPERATURES_DATA.value self.can_interface.register_receiving_publication_function(channel_id, msg_id, self._handler_temperatures_sync) self.hd_temperatures_timestamp = 0.0 self.hd_temperatures = {HDTemperaturesNames.THERMISTOR_ONBOARD_NTC.name: 0.0, HDTemperaturesNames.THERMISTOR_POWER_SUPPLY_1.name: 0.0, HDTemperaturesNames.TEMPSENSOR_FPGA_BOARD.name: 0.0, HDTemperaturesNames.TEMPSENSOR_VENOUS_PRESS_TEMP.name: 0.0, HDTemperaturesNames.TEMPSENSOR_ARTERIAL_PRESS_TEMP.name: 0.0} def get_hd_temperatures_values(self) -> dict: """ Gets the status of HD temperature sensors @return: The HD temperatures values in a dictionary """ return self.hd_temperatures @publish(["hd_temperatures_timestamp","hd_temperatures"]) def _handler_temperatures_sync(self, message,timestamp=0.0): """ Handles published HD temperatures data messages. Temperatures data are captured for reference. @param message: published temperatures data message @return: none """ onboard_thermistor = struct.unpack('f', bytearray( message['message'][MsgFieldPositions.START_POS_FIELD_1:MsgFieldPositions.END_POS_FIELD_1]))[0] power_supply_thermistor = struct.unpack('f', bytearray( message['message'][MsgFieldPositions.START_POS_FIELD_2:MsgFieldPositions.END_POS_FIELD_2]))[0] fpga_board_sensor = struct.unpack('f', bytearray( message['message'][MsgFieldPositions.START_POS_FIELD_3:MsgFieldPositions.END_POS_FIELD_3]))[0] venous_pressure_sensor_temp = struct.unpack('f', bytearray( message['message'][MsgFieldPositions.START_POS_FIELD_4:MsgFieldPositions.END_POS_FIELD_4]))[0] arterial_sensor = struct.unpack('f', bytearray( message['message'][MsgFieldPositions.START_POS_FIELD_5:MsgFieldPositions.END_POS_FIELD_5]))[0] self.hd_temperatures[HDTemperaturesNames.THERMISTOR_ONBOARD_NTC.name] = onboard_thermistor self.hd_temperatures[HDTemperaturesNames.THERMISTOR_POWER_SUPPLY_1.name] = power_supply_thermistor self.hd_temperatures[HDTemperaturesNames.TEMPSENSOR_FPGA_BOARD.name] = fpga_board_sensor self.hd_temperatures[HDTemperaturesNames.TEMPSENSOR_VENOUS_PRESS_TEMP.name] = venous_pressure_sensor_temp self.hd_temperatures[HDTemperaturesNames.TEMPSENSOR_ARTERIAL_PRESS_TEMP.name] = arterial_sensor self.hd_temperatures_timestamp = timestamp def cmd_temperatures_value_override(self, sensor: int, value: float, reset: int = NO_RESET) -> int: """ Constructs and sends the HD temperatures value override command Constraints: Must be logged into HD. @param sensor: (int) sensor ID that is status is overridden @param value: (int) value that the temperature sensor will be overridden to @param reset: (int) 1 to reset a previous override, 0 to override @return: 1 if successful, zero otherwise """ reset_value = integer_to_bytearray(reset) snsr = integer_to_bytearray(sensor) vl = float_to_bytearray(value) payload = reset_value + vl + snsr message = DenaliMessage.build_message(channel_id=DenaliChannels.dialin_to_hd_ch_id, message_id=MsgIds.MSG_ID_HD_TEMPERATURES_VALUE_OVERRIDE.value, payload=payload) self.logger.debug("Override temperature sensor value") # Send message received_message = self.can_interface.send(message) # If there is no content... if received_message is not None: self.logger.debug("Switch " + str(HDTemperaturesNames(sensor).name) + " to: " + str(received_message['message'][DenaliMessage.PAYLOAD_START_INDEX])) # response payload is OK or not OK return received_message['message'][DenaliMessage.PAYLOAD_START_INDEX] else: self.logger.debug("Timeout!!!!") return False def cmd_temperatures_data_broadcast_interval_override(self, ms: int, reset: int = NO_RESET) -> int: """ Constructs and sends the HD temperatures data publication override command. Constraints: Must be logged into HD. Given interval must be non-zero and a multiple of the HD general task interval (50 ms). @param ms: (int) interval (in ms) to override with @param reset: (int) 1 to reset a previous override, 0 to override @return: 1 if successful, zero otherwise """ if not check_broadcast_interval_override_ms(ms): return False rst = integer_to_bytearray(reset) mis = integer_to_bytearray(ms) payload = rst + mis message = DenaliMessage.build_message(channel_id=DenaliChannels.dialin_to_hd_ch_id, message_id=MsgIds.MSG_ID_HD_TEMPERATURES_PUBLISH_INTERVAL_OVERRIDE.value, payload=payload) self.logger.debug("Override HD temperatures data broadcast interval") # Send message received_message = self.can_interface.send(message) # If there is content... if received_message is not None: # self.logger.debug(received_message) if reset == RESET: str_res = "reset back to normal" else: str_res = str(mis) self.logger.debug( "HD temperatures data broadcast interval overridden to " + str_res + " ms: " + str(received_message['message'][DenaliMessage.PAYLOAD_START_INDEX])) # response payload is OK or not OK return received_message['message'][DenaliMessage.PAYLOAD_START_INDEX] else: self.logger.debug("Timeout!!!!") return False