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parameters.h
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parameters.h
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/******************************************************************************
* @author Makers For Life
* @copyright Copyright (c) 2020 Makers For Life
* @file parameters.h
* @brief Various settings
*****************************************************************************/
#pragma once
// INCLUDES ===================================================================
// External
#include "Arduino.h"
// Internal
#include "../includes/config.h"
// PARAMETERS =================================================================
/// Current version of the software
#define VERSION "dev"
/**
* @name Core parameters
*/
///@{
// Main controller computes period in millisecond: minimum 1 ms, maximum 10 ms
#define MAIN_CONTROLLER_COMPUTE_PERIOD_MS 10u
// cppcheck-suppress misra-c2012-5.4
#define MAIN_CONTROLLER_COMPUTE_PERIOD_MICROSECONDS (1000u * MAIN_CONTROLLER_COMPUTE_PERIOD_MS)
// Minimum and maximum bounds of execution parameters
#define CONST_MAX_PEAK_PRESSURE 700 // arbitrary [mmH2O]
#define CONST_MIN_PEAK_PRESSURE 100 // arbitrary [mmH2O]
#define CONST_MAX_PLATEAU_PRESSURE 400 // PP MAX ARDS = 300 [mmH2O]
#define CONST_MIN_PLATEAU_PRESSURE 50 // arbitrary [mmH2O]
#define CONST_MAX_PEEP_PRESSURE 300 // PP MAX = 300, or PEEP < PP [mmH2O]
#define CONST_MIN_PEEP_PRESSURE 0 // arbitrary but > 0 [mmH2O]
#define CONST_MIN_TRIGGER_OFFSET 0u // [mmH2O]
#define CONST_MAX_TRIGGER_OFFSET 100u // [mmH2O]
#define CONST_INITIAL_ZERO_PRESSURE 0u // [mmH2O]
#define CONST_INITIAL_ZERO_VOLUME 0u // [mL]
#define CONST_MIN_TIDAL_VOLUME 50u // [mL]
#define CONST_MAX_TIDAL_VOLUME 2000u // [mL]
#define CONST_MAX_INSPIRATORY_TRIGGER_FLOW 100u // [%]
#define CONST_MIN_INSPIRATORY_TRIGGER_FLOW 0u // [%]
#define CONST_MAX_EXPIRATORY_TRIGGER_FLOW 100u // [%]
#define CONST_MIN_EXPIRATORY_TRIGGER_FLOW 0u // [%]
#define CONST_MIN_MIN_INSPIRATION_DURATION 100u // [in ms]
#define CONST_MAX_MIN_INSPIRATION_DURATION 3000u // [in ms]
#define CONST_MIN_MAX_INSPIRATION_DURATION 200u // [in ms]
#define CONST_MAX_MAX_INSPIRATION_DURATION 5000u // [in ms]
#define CONST_MIN_PLATEAU_DURATION 0u // [in ms]
#define CONST_MAX_PLATEAU_DURATION 2000u // [in ms]
#define CONST_MIN_INSPIRATORY_FLOW 5000 // [in ml/min]
#define CONST_MAX_INSPIRATORY_FLOW 80000 // [in ml/min]
#define CONST_MIN_INSPIRATORY_DURATION 200u // [in ms]
#define CONST_MAX_INSPIRATORY_DURATION 3000u // [in ms]
#define CONST_MIN_LOW_INSPIRATORY_MINUTE_VOLUME_ALARM_THRESHOLD 0u // [in L/min]
#define CONST_MAX_LOW_INSPIRATORY_MINUTE_VOLUME_ALARM_THRESHOLD 20u // [in L/min]
#define CONST_MIN_LOW_EXPIRATORY_MINUTE_VOLUME_ALARM_THRESHOLD 0u // [in L/min]
#define CONST_MAX_LOW_EXPIRATORY_MINUTE_VOLUME_ALARM_THRESHOLD 20u // [in L/min]
#define CONST_MIN_HIGH_INSPIRATORY_MINUTE_VOLUME_ALARM_THRESHOLD 1u // [in L/min]
#define CONST_MAX_HIGH_INSPIRATORY_MINUTE_VOLUME_ALARM_THRESHOLD 40u // [in L/min]
#define CONST_MIN_HIGH_EXPIRATORY_MINUTE_VOLUME_ALARM_THRESHOLD 1u // [in L/min]
#define CONST_MAX_HIGH_EXPIRATORY_MINUTE_VOLUME_ALARM_THRESHOLD 40u // [in L/min]
#define CONST_MIN_LOW_RESPIRATORY_RATE_ALARM_THRESHOLD 5u // [in cpm]
#define CONST_MAX_LOW_RESPIRATORY_RATE_ALARM_THRESHOLD 25u // [in cpm]
#define CONST_MIN_HIGH_RESPIRATORY_RATE_ALARM_THRESHOLD 15u // [in cpm]
#define CONST_MAX_HIGH_RESPIRATORY_RATE_ALARM_THRESHOLD 35u // [in cpm]
#define CONST_MIN_LOW_TIDAL_VOLUME_ALARM_THRESHOLD 0u // [in mL]
#define CONST_MAX_LOW_TIDAL_VOLUME_ALARM_THRESHOLD 1000u // [in mL]
#define CONST_MIN_HIGH_TIDAL_VOLUME_ALARM_THRESHOLD 50u // [in mL]
#define CONST_MAX_HIGH_TIDAL_VOLUME_ALARM_THRESHOLD 2000u // [in mL]
#define CONST_MIN_LEAK_ALARM_THRESHOLD 0u // [in cL/min]
#define CONST_MIN_LEAK_ALARM_THRESHOLD 10000u // [in cL/min]
#define CONST_MIN_PEAK_PRESSURE_ALARM_THRESHOLD 50 // [in mmH2O]
#define CONST_MAX_PEAK_PRESSURE_ALARM_THRESHOLD 700 // [in mmH2O]
#define CONST_MIN_PATIENT_HEIGHT 30 // [in cm]
#define CONST_MAX_PATIENT_HEIGHT 250 // [in cm]
#define CONST_MIN_PATIENT_GENDER 0 // [male]
#define CONST_MAX_PATIENT_GENDER 1 // [female]
// Expiration term in the "Inspiration/Expiration" ratio given that Inspiration = 10
#define CONST_MIN_EXPIRATORY_TERM 10u
#define CONST_MAX_EXPIRATORY_TERM 60u
#define DEFAULT_PEEP_COMMAND 50u // in mmH2O
#define DEFAULT_PLATEAU_COMMAND 200u // in mmH2O
#define DEFAULT_PEAK_PRESSURE_COMMAND 200u // in mmH2O
#define DEFAULT_EXPIRATORY_TERM_COMMAND 20u // 20 means I:E = 10:20 = 1:2
#define DEFAULT_TIDAL_VOLUME_COMMAND 400u // in mL
#define DEFAULT_PLATEAU_DURATION_COMMAND 200u // in ms
#define DEFAULT_TRIGGER_OFFSET 20u // in mmH2O
#define DEFAULT_INSPIRATORY_TRIGGER_FLOW_COMMAND 10u // in percent of current flow
#define DEFAULT_EXPIRATORY_TRIGGER_FLOW_COMMAND 30u // in percent of max inspirated flow
#define DEFAULT_MIN_INSPIRATION_DURATION_COMMAND 200u // in ms
#define DEFAULT_MAX_INSPIRATION_DURATION_COMMAND 1000u // in ms
#define DEFAULT_TARGET_FLOW_COMMAND 40000u // in mL/min
#define DEFAULT_INSPIRATORY_DURATION 800u // in ms
#define DEFAULT_LOW_INSPIRATORY_MINUTE_VOLUME_ALARM_THRESHOLD 3000u // [in mL/min]
#define DEFAULT_LOW_EXPIRATORY_MINUTE_VOLUME_ALARM_THRESHOLD 3000u // [in mL/min]
#define DEFAULT_HIGH_INSPIRATORY_MINUTE_VOLUME_ALARM_THRESHOLD 20000u // [in mL/min]
#define DEFAULT_HIGH_EXPIRATORY_MINUTE_VOLUME_ALARM_THRESHOLD 20000u // [in mL/min]
#define DEFAULT_LOW_RESPIRATORY_RATE_ALARM_THRESHOLD 16u // [in cpm]
#define DEFAULT_HIGH_RESPIRATORY_RATE_ALARM_THRESHOLD 24u // [in cpm]
#define DEFAULT_LOW_TIDAL_VOLUME_ALARM_THRESHOLD 200u // [in mL]
#define DEFAULT_HIGH_TIDAL_VOLUME_ALARM_THRESHOLD 1000u // [in mL]
#define DEFAULT_LEAK_ALARM_THRESHOLD 2000u // [in mL/min]
#define DEFAULT_PEAK_PRESSURE_ALARM_THRESHOLD 500u // [in mmH2O]
#define DEFAULT_PATIENT_HEIGHT 170u // [in cm]
#define DEFAULT_PATIENT_GENDER 0u // [0 = male, 1 = female]
#define PEAK_PRESSURE_ALARM_THRESHOLD_OFFSET_FROM_PLATEAU 150 // [in mmH2O]
#define AIR_EXHAUST_THRESHOLD_FROM_PEAK_PRESSURE_ALARM 100 // [in mmH2O]
#define DEFAULT_CYCLE_PER_MINUTE_COMMAND 20u
#define CONST_MAX_CYCLE 35u
#define CONST_MIN_CYCLE 5u
#define DEFAULT_PEAK_PRESSURE_DELTA 10u
#define MAX_PRESSURE_OFFSET 40
#define MIN_EXPIRATORY_FLOW_OFFSET 2.5
#define TRIGGER_MODE_ENABLED_BY_DEFAULT false
///@}
/**
* @name PID gains & settings
*/
///@{
static const int32_t PID_BLOWER_KP = 2000;
static const int32_t PID_BLOWER_KI = 50;
static const int32_t PID_BLOWER_KD = 0;
static const int32_t PID_BLOWER_INTEGRAL_MAX = 1000;
static const int32_t PID_BLOWER_INTEGRAL_MIN = -1000;
static const int32_t PID_PATIENT_KP = 15000;
static const int32_t PID_PATIENT_KI = 200;
static const int32_t PID_PATIENT_KD = 110;
static const int32_t PID_PATIENT_INTEGRAL_MAX = 1000;
static const int32_t PID_PATIENT_INTEGRAL_MIN = -1000;
/// Increase target pressure by an offset (in mmH2O) for safety, to avoid going below the target
/// pressure
static const int32_t PID_PATIENT_SAFETY_PEEP_OFFSET = 0;
#define PC_NUMBER_OF_SAMPLE_DERIVATIVE_MOVING_MEAN 10u
#define NUMBER_OF_SAMPLE_LAST_VALUES 20u
/// Number of periods used for calculating the respiratory rate
#define NUMBER_OF_BREATH_PERIOD 3u
///@}
/**
* @name Valves
*/
///@{
/// Angle when opened
#define VALVE_OPEN_STATE 0u
/// Angle when closed
#define VALVE_CLOSED_STATE 125u
#define VALVE_PERIOD 1000 // 1 kHz Faulhaber motors are controlled with a 1 kHz PWM
#define FAULHABER_OPENED 660 // PWM duty cycle 64% -> open
#define FAULHABER_CLOSED 900 // PWM duty cycle 90% -> closed
#define VALVE_RESPONSE_TIME_MS 50 // estimated response time for going to open state to close state
#define PIN_INSPIRATORY_VALVE D5 // PB4 / TIM3_CH1
#define PIN_EXPIRATORY_VALVE D4 // PB5 / TIM3_CH2
#define TIM_CHANNEL_INSPIRATORY_VALVE 1
#define TIM_CHANNEL_EXPIRATORY_VALVE 2
#define ESC_PPM_PERIOD \
10000 // ESC should be driven in 50 Hz. 100 Hz is a security against ESC or nucleo bugs. Some
// ESC stops very quickly
///@}
/**
* @name Blower
*/
///@{
#define MIN_BLOWER_SPEED 300u
#define MAX_BLOWER_SPEED 1800u
#define DEFAULT_BLOWER_SPEED 900u
///@}
/**
* @name LCD screen
*/
///@{
#define PIN_LCD_RS PA8
#define PIN_LCD_RW PC12
#define PIN_LCD_EN PA5
#define PIN_LCD_D4 PC7 // PC7
#define PIN_LCD_D5 PB10 // PB6
#define PIN_LCD_D6 PA7 // PA7
#define PIN_LCD_D7 PA6 // PA6
/// Number of lines
#define SCREEN_LINE_NUMBER 4
/// Number of characters per line
#define SCREEN_LINE_LENGTH 20
/// Period between screen updates in microsecond. Should be a multiple of
/// MAIN_CONTROLLER_COMPUTE_PERIOD_MICROSECONDS
#define LCD_UPDATE_PERIOD_US 300000u
/// Period between screen resets in minutes
#define LCD_RESET_PERIOD 5
///@}
/**
* @name Buttons
*/
///@{
#define PIN_BTN_ALARM_OFF PB2
#define PIN_BTN_START PC13
#define PIN_BTN_STOP PB15
// other buttons are in a 3x3 matrix
#define PIN_OUT_COL1 PC2
#define PIN_OUT_COL2 PC3
#define PIN_OUT_COL3 PC6
#define PIN_IN_ROW1 PC9
#define PIN_IN_ROW2 PC10
#define PIN_IN_ROW3 PC11
// expander used to read AC status
#define PIN_IN_MAINS_CONNECTED PB1
#define PIN_IN_CONNECTION_TO_SUPPLY_OK PB6
///@}
/**
* @name LED
*/
///@{
#define PIN_LED_START PC8 // below start button, close to START label
#define PIN_LED_GREEN PB13 // "alarm off"
#define PIN_LED_YELLOW PB14 // "alarm med"
#define PIN_LED_RED PC4 // "alarm high"
#define LED_START_ACTIVE HIGH
#define LED_START_INACTIVE LOW
#define LED_RED_ACTIVE HIGH
#define LED_RED_INACTIVE LOW
#define LED_YELLOW_ACTIVE HIGH
#define LED_YELLOW_INACTIVE LOW
#define LED_GREEN_ACTIVE HIGH
#define LED_GREEN_INACTIVE LOW
///@}
/**
* @name Other I/O
*/
///@{
#define PIN_PRESSURE_SENSOR PA1
#define PIN_BUZZER PB7 // TIM4_CH2
#define PIN_ESC_BLOWER PA10 // PA10 / TIM1_CH3
#define TIM_CHANNEL_ESC_BLOWER 3
#define PIN_TEMP_BLOWER PC1
#define PIN_BATTERY PA4
#define PIN_TELEMETRY_SERIAL_RX PB3 // UART1
#define PIN_TELEMETRY_SERIAL_TX PA9 // UART1
#define PIN_ENABLE_PWR_RASP PD2 // Raspberry Power Supply. High is OFF.
#define PWR_RASP_ACTIVE LOW
#define PWR_RASP_INACTIVE HIGH
///@}
/**
* @name Flow meter
*/
///@{
#ifdef MASS_FLOW_METER_ENABLED
#define MASS_FLOW_TIMER TIM10
#define MASS_FLOW_CHANNEL 1
#define PIN_I2C_SDA PB9
#define PIN_I2C_SCL PB8
#define MFM_ANALOG_INPUT A3
#define MFM_POWER_CONTROL PC0
#define MFM_POWER_OFF LOW
#define MFM_POWER_ON HIGH
#endif
#define MASS_FLOW_ERROR_VALUE 999999
///@}
/**
* @name Alarm thresholds
*/
///@{
#define ALARM_THRESHOLD_MIN_PRESSURE 20 // RCM-SW-2 + RCM-SW-19
#define ALARM_THRESHOLD_DIFFERENCE_PERCENT 20 // RCM-SW-1 + RCM-SW-14
#define ALARM_THRESHOLD_DIFFERENCE_PRESSURE 20 // RCM-SW-3 + RCM-SW-15
///@}
#define ADC_RESOLUTION_MAKAIR 12