Tasmota/sonoff/settings.h

/*
  settings.h - setting variables for Sonoff-Tasmota

  Copyright (C) 2019  Theo Arends

  This program is free software: you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation, either version 3 of the License, or
  (at your option) any later version.

  This program is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License for more details.

  You should have received a copy of the GNU General Public License
  along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

#ifndef _SETTINGS_H_
#define _SETTINGS_H_

const uint8_t PARAM8_SIZE = 18;            // Number of param bytes (SetOption)

typedef union {                            // Restricted by MISRA-C Rule 18.4 but so useful...
  uint32_t data;                           // Allow bit manipulation using SetOption
  struct {                                 // SetOption0 .. SetOption31
    uint32_t save_state : 1;               // bit 0              - SetOption0  - Save power state and use after restart
    uint32_t button_restrict : 1;          // bit 1              - SetOption1  - Control button multipress
    uint32_t value_units : 1;              // bit 2              - SetOption2  - Add units to JSON status messages
    uint32_t mqtt_enabled : 1;             // bit 3              - SetOption3  - Control MQTT
    uint32_t mqtt_response : 1;            // bit 4              - SetOption4  - Switch between MQTT RESULT or COMMAND
    uint32_t mqtt_power_retain : 1;        // bit 5              - CMND_POWERRETAIN
    uint32_t mqtt_button_retain : 1;       // bit 6              - CMND_BUTTONRETAIN
    uint32_t mqtt_switch_retain : 1;       // bit 7              - CMND_SWITCHRETAIN
    uint32_t temperature_conversion : 1;   // bit 8              - SetOption8  - Switch between Celsius or Fahrenheit
    uint32_t mqtt_sensor_retain : 1;       // bit 9              - CMND_SENSORRETAIN
    uint32_t mqtt_offline : 1;             // bit 10             - SetOption10 - Control MQTT LWT message format
    uint32_t button_swap : 1;              // bit 11 (v5.1.6)    - SetOption11 - Swap button single and double press functionality
    uint32_t stop_flash_rotate : 1;        // bit 12 (v5.2.0)    - SetOption12 - Switch between dynamic or fixed slot flash save location
    uint32_t button_single : 1;            // bit 13 (v5.4.0)    - SetOption13 - Support only single press to speed up button press recognition
    uint32_t interlock : 1;                // bit 14 (v5.6.0)    - CMND_INTERLOCK
    uint32_t pwm_control : 1;              // bit 15 (v5.8.1)    - SetOption15 - Switch between commands PWM or COLOR/DIMMER/CT/CHANNEL
    uint32_t ws_clock_reverse : 1;         // bit 16 (v5.8.1)    - SetOption16 - Switch between clockwise or counter-clockwise
    uint32_t decimal_text : 1;             // bit 17 (v5.8.1)    - SetOption17 - Switch between decimal or hexadecimal output
    uint32_t light_signal : 1;             // bit 18 (v5.10.0c)  - SetOption18 - Pair light signal with CO2 sensor
    uint32_t hass_discovery : 1;           // bit 19 (v5.11.1a)  - SetOption19 - Control Home Assistantautomatic discovery (See SetOption59)
    uint32_t not_power_linked : 1;         // bit 20 (v5.11.1f)  - SetOption20 - Control power in relation to Dimmer/Color/Ct changes
    uint32_t no_power_on_check : 1;        // bit 21 (v5.11.1i)  - SetOption21 - Show voltage even if powered off
    uint32_t mqtt_serial : 1;              // bit 22 (v5.12.0f)  - CMND_SERIALSEND and CMND_SERIALLOG
    uint32_t mqtt_serial_raw : 1;          // bit 23 (v6.1.1c)   - CMND_SERIALSEND3
    uint32_t pressure_conversion : 1;      // bit 24 (v6.3.0.2)  - SetOption24 - Switch between hPa or mmHg pressure unit
    uint32_t knx_enabled : 1;              // bit 25 (v5.12.0l)  - CMND_KNX_ENABLED
    uint32_t device_index_enable : 1;      // bit 26 (v5.13.1a)  - SetOption26 - Switch between POWER or POWER1
    uint32_t knx_enable_enhancement : 1;   // bit 27 (v5.14.0a)  - CMND_KNX_ENHANCED
    uint32_t rf_receive_decimal : 1;       // bit 28 (v6.0.0a)   - SetOption28 - RF receive data format
    uint32_t ir_receive_decimal : 1;       // bit 29 (v6.0.0a)   - SetOption29 - IR receive data format
    uint32_t hass_light : 1;               // bit 30 (v6.0.0b)   - SetOption30 - Enforce HAss autodiscovery as light
    uint32_t global_state : 1;             // bit 31 (v6.1.0)    - SetOption31 - Control link led blinking
  };
} SysBitfield;

typedef union {                            // Restricted by MISRA-C Rule 18.4 but so useful...
  uint32_t data;                           // Allow bit manipulation using SetOption
  struct {                                 // SetOption50 .. SetOption81
    uint32_t timers_enable : 1;            // bit 0 (v6.1.1b)    - CMND_TIMERS
    uint32_t user_esp8285_enable : 1;      // bit 1 (v6.1.1.14)  - SetOption51 - Enable ESP8285 user GPIO's
    uint32_t time_append_timezone : 1;     // bit 2 (v6.2.1.2)   - SetOption52 - Append timezone to JSON time
    uint32_t gui_hostname_ip : 1;          // bit 3 (v6.2.1.20)  - SetOption53 - Show hostanme and IP address in GUI main menu
    uint32_t tuya_apply_o20 : 1;           // bit 4 (v6.3.0.4)   - SetOption54 - Apply SetOption20 settings to Tuya device
    uint32_t mdns_enabled : 1;             // bit 5 (v6.4.1.4)   - SetOption55 - Control mDNS service
    uint32_t use_wifi_scan : 1;            // bit 6 (v6.3.0.10)  - SetOption56 - Scan wifi network at restart for configured AP's
    uint32_t use_wifi_rescan : 1;          // bit 7 (v6.3.0.10)  - SetOption57 - Scan wifi network every 44 minutes for configured AP's
    uint32_t receive_raw : 1;              // bit 8 (v6.3.0.11)  - SetOption58 - Add IR Raw data to JSON message
    uint32_t hass_tele_on_power : 1;       // bit 9 (v6.3.0.13)  - SetOption59 - Send tele/%topic%/STATE in addition to stat/%topic%/RESULT
    uint32_t sleep_normal : 1;             // bit 10 (v6.3.0.15) - SetOption60 - Enable normal sleep instead of dynamic sleep
    uint32_t button_switch_force_local : 1;// bit 11 (v6.3.0.16) - SetOption61 - Force local operation when button/switch topic is set
    uint32_t no_hold_retain : 1;           // bit 12 (v6.4.1.19) - SetOption62 - Don't use retain flag on HOLD messages
    uint32_t no_power_feedback : 1;        // bit 13 (v6.5.0.9)  - SetOption63 - Don't scan relay power state at restart
    uint32_t use_underscore : 1;           // bit 14 (v6.5.0.12) - SetOption64 - Enable "_" instead of "-" as sensor index separator
    uint32_t ex_tuya_disable_dimmer : 1;   // bit 15 (v6.5.0.15) - SetOption65 - (Enable or Disable Tuya Serial Dimmer control) - free since 6.6.0.10
    uint32_t tuya_dimmer_range_255 : 1;    // bit 16 (v6.6.0.1)  - SetOption66 - Enable or Disable Dimmer range 255 slider control
    uint32_t buzzer_enable : 1;            // bit 17 (v6.6.0.1)  - SetOption67 - Enable buzzer when available
    uint32_t pwm_multi_channels : 1;       // bit 18 (v6.6.0.3)  - SetOption68 - Enable multi-channels PWM instead of Color PWM
    uint32_t tuya_dimmer_min_limit : 1;    // bit 19 (v6.6.0.5)  - SetOption69 - Limits Tuya dimmers to minimum of 10% (25) when enabled.
    uint32_t energy_weekend : 1;           // bit 20 (v6.6.0.8)  - CMND_TARIFF
    uint32_t spare21 : 1;
    uint32_t spare22 : 1;
    uint32_t spare23 : 1;
    uint32_t spare24 : 1;
    uint32_t spare25 : 1;
    uint32_t spare26 : 1;
    uint32_t spare27 : 1;
    uint32_t spare28 : 1;
    uint32_t spare29 : 1;
    uint32_t spare30 : 1;
    uint32_t spare31 : 1;
  };
} SysBitfield3;

typedef union {
  uint32_t data;                           // Allow bit manipulation
  struct {
    uint32_t spare00 : 1;
    uint32_t spare01 : 1;
    uint32_t spare02 : 1;
    uint32_t spare03 : 1;
    uint32_t time_format : 2;              // (v6.6.0.9) - CMND_TIME
    uint32_t calc_resolution : 3;
    uint32_t weight_resolution : 2;
    uint32_t frequency_resolution : 2;
    uint32_t axis_resolution : 2;
    uint32_t current_resolution : 2;
    uint32_t voltage_resolution : 2;
    uint32_t wattage_resolution : 2;
    uint32_t emulation : 2;
    uint32_t energy_resolution : 3;
    uint32_t pressure_resolution : 2;
    uint32_t humidity_resolution : 2;
    uint32_t temperature_resolution : 2;
  };
} SysBitfield2;

typedef union {
  uint16_t data;
  struct {
    uint16_t hemis : 1;                    // bit 0        = 0=Northern, 1=Southern Hemisphere (=Opposite DST/STD)
    uint16_t week : 3;                     // bits 1 - 3   = 0=Last week of the month, 1=First, 2=Second, 3=Third, 4=Fourth
    uint16_t month : 4;                    // bits 4 - 7   = 1=Jan, 2=Feb, ... 12=Dec
    uint16_t dow : 3;                      // bits 8 - 10  = day of week, 1=Sun, 2=Mon, ... 7=Sat
    uint16_t hour : 5;                     // bits 11 - 15 = 0-23
  };
} TimeRule;

typedef union {
  uint32_t data;
  struct {
    uint32_t time : 11;                    // bits 0 - 10 = minutes in a day
    uint32_t window : 4;                   // bits 11 - 14 = minutes random window
    uint32_t repeat : 1;                   // bit 15
    uint32_t days : 7;                     // bits 16 - 22 = week day mask
    uint32_t device : 4;                   // bits 23 - 26 = 16 devices
    uint32_t power : 2;                    // bits 27 - 28 = 4 power states - Off, On, Toggle, Blink or Rule
    uint32_t mode : 2;                     // bits 29 - 30 = timer modes - 0 = Scheduler, 1 = Sunrise, 2 = Sunset
    uint32_t arm : 1;                      // bit 31
  };
} Timer;

typedef union {
  uint16_t data;
  struct {
    uint16_t pinmode : 3;                   // Pin mode (1 through 6)
    uint16_t pullup : 1;                    // Enable internal weak pull-up resistor
    uint16_t saved_state : 1;               // Save output state, if used.
    uint16_t int_report_mode : 2;           // Interrupt reporting mode 0 = immediate telemetry & event, 1 = immediate event only, 2 = immediate telemetry only
    uint16_t int_report_defer : 4;          // Number of interrupts to ignore until reporting (default 0, max 15)
    uint16_t int_count_en : 1;              // Enable interrupt counter for this pin
    uint16_t int_retain_flag : 1;           // Report if interrupt occured for pin in next teleperiod
    uint16_t spare13 : 1;
    uint16_t spare14 : 1;
    uint16_t spare15 : 1;
  };
} Mcp230xxCfg;

typedef union {
  uint8_t data;
  struct {
    uint8_t spare0 : 1;
    uint8_t spare1 : 1;
    uint8_t spare2 : 1;
    uint8_t spare3 : 1;
    uint8_t spare4 : 1;
    uint8_t spare5 : 1;
    uint8_t spare6 : 1;
    uint8_t mhz19b_abc_disable : 1;        // Disable ABC (Automatic Baseline Correction for MHZ19(B) (0 = Enabled (default), 1 = Disabled with Sensor15 command)
  };
} SensorCfg1;

typedef struct {
  uint32_t usage1_kWhtotal;
  uint32_t usage1_kWhtoday;
  uint32_t return1_kWhtotal;
  uint32_t return2_kWhtotal;
  uint32_t last_usage_kWhtotal;
  uint32_t last_return_kWhtotal;
} EnergyUsage;


typedef struct {
  uint8_t fnid = 0;
  uint8_t dpid = 0;
} TuyaFnidDpidMap;

const uint8_t MAX_TUYA_FUNCTIONS = 16;

/*
struct SYSCFG {
  unsigned long cfg_holder;                // 000 Pre v6 header
  unsigned long save_flag;                 // 004
  unsigned long version;                   // 008
  unsigned long bootcount;                 // 00C
*/
struct SYSCFG {
  uint16_t      cfg_holder;                // 000 v6 header
  uint16_t      cfg_size;                  // 002
  unsigned long save_flag;                 // 004
  unsigned long version;                   // 008
  uint16_t      bootcount;                 // 00C
  uint16_t      cfg_crc;                   // 00E
  SysBitfield   flag;                      // 010
  int16_t       save_data;                 // 014
  int8_t        timezone;                  // 016
  char          ota_url[101];              // 017
  char          mqtt_prefix[3][11];        // 07C
  uint8_t       ex_baudrate;               // 09D - Free since 6.6.0.9
  uint8_t       seriallog_level;           // 09E
  uint8_t       sta_config;                // 09F
  uint8_t       sta_active;                // 0A0
  char          sta_ssid[2][33];           // 0A1 - Keep together with sta_pwd as being copied as one chunck with reset 5
  char          sta_pwd[2][65];            // 0E3 - Keep together with sta_ssid as being copied as one chunck with reset 5
  char          hostname[33];              // 165
  char          syslog_host[33];           // 186
  uint8_t       rule_stop;                 // 1A7
  uint16_t      syslog_port;               // 1A8
  uint8_t       syslog_level;              // 1AA
  uint8_t       webserver;                 // 1AB
  uint8_t       weblog_level;              // 1AC
  uint8_t       mqtt_fingerprint[2][20];   // 1AD
  uint8_t       adc_param_type;            // 1D5

  uint8_t       free_1D6[18];              // 1D6  Free since 5.12.0e

  uint8_t       sps30_inuse_hours;         // 1E8
  char          mqtt_host[33];             // 1E9 - Keep together with below as being copied as one chunck with reset 6
  uint16_t      mqtt_port;                 // 20A - Keep together
  char          mqtt_client[33];           // 20C - Keep together
  char          mqtt_user[33];             // 22D - Keep together
  char          mqtt_pwd[33];              // 24E - Keep together
  char          mqtt_topic[33];            // 26F - Keep together with above items as being copied as one chunck with reset 6
  char          button_topic[33];          // 290
  char          mqtt_grptopic[33];         // 2B1
  uint8_t       display_model;             // 2D2
  uint8_t       display_mode;              // 2D3
  uint8_t       display_refresh;           // 2D4
  uint8_t       display_rows;              // 2D5
  uint8_t       display_cols[2];           // 2D6
  uint8_t       display_address[8];        // 2D8
  uint8_t       display_dimmer;            // 2E0
  uint8_t       display_size;              // 2E1
  TimeRule      tflag[2];                  // 2E2
  uint16_t      pwm_frequency;             // 2E6
  power_t       power;                     // 2E8
  uint16_t      pwm_value[MAX_PWMS];       // 2EC
  int16_t       altitude;                  // 2F6
  uint16_t      tele_period;               // 2F8
  uint8_t       display_rotate;            // 2FA
  uint8_t       ledstate;                  // 2FB
  uint8_t       param[PARAM8_SIZE];        // 2FC  SetOption32 .. SetOption49
  int16_t       toffset[2];                // 30E
  uint8_t       display_font;              // 312
  char          state_text[4][11];         // 313
  uint8_t       energy_power_delta;        // 33F
  uint16_t      domoticz_update_timer;     // 340
  uint16_t      pwm_range;                 // 342
  unsigned long domoticz_relay_idx[MAX_DOMOTICZ_IDX];  // 344
  unsigned long domoticz_key_idx[MAX_DOMOTICZ_IDX];    // 354
  unsigned long energy_power_calibration;  // 364
  unsigned long energy_voltage_calibration;  // 368
  unsigned long energy_current_calibration;  // 36C
  unsigned long energy_kWhtoday;           // 370
  unsigned long energy_kWhyesterday;       // 374
  uint16_t      energy_kWhdoy;             // 378
  uint16_t      energy_min_power;          // 37A
  uint16_t      energy_max_power;          // 37C
  uint16_t      energy_min_voltage;        // 37E
  uint16_t      energy_max_voltage;        // 380
  uint16_t      energy_min_current;        // 382
  uint16_t      energy_max_current;        // 384
  uint16_t      energy_max_power_limit;    // 386 MaxPowerLimit
  uint16_t      energy_max_power_limit_hold;         // 388 MaxPowerLimitHold
  uint16_t      energy_max_power_limit_window;       // 38A MaxPowerLimitWindow
  uint16_t      energy_max_power_safe_limit;         // 38C MaxSafePowerLimit
  uint16_t      energy_max_power_safe_limit_hold;    // 38E MaxSafePowerLimitHold
  uint16_t      energy_max_power_safe_limit_window;  // 390 MaxSafePowerLimitWindow
  uint16_t      energy_max_energy;         // 392 MaxEnergy
  uint16_t      energy_max_energy_start;   // 394 MaxEnergyStart
  uint16_t      mqtt_retry;                // 396
  uint8_t       poweronstate;              // 398
  uint8_t       last_module;               // 399
  uint16_t      blinktime;                 // 39A
  uint16_t      blinkcount;                // 39C
  uint16_t      light_rotation;            // 39E
  SysBitfield3  flag3;                     // 3A0
  uint8_t       switchmode[MAX_SWITCHES];  // 3A4  (6.0.0b - moved from 0x4CA)
  char          friendlyname[MAX_FRIENDLYNAMES][33]; // 3AC
  char          switch_topic[33];          // 430
  char          serial_delimiter;          // 451
  uint8_t       ex_sbaudrate;              // 452 - Free since 6.6.0.9
  uint8_t       sleep;                     // 453
  uint16_t      domoticz_switch_idx[MAX_DOMOTICZ_IDX];      // 454
  uint16_t      domoticz_sensor_idx[MAX_DOMOTICZ_SNS_IDX];  // 45C
  uint8_t       module;                    // 474
  uint8_t       ws_color[4][3];            // 475
  uint8_t       ws_width[3];               // 481
  myio          my_gp;                     // 484
  uint8_t       my_adc0;                   // 495
  uint16_t      light_pixels;              // 496
  uint8_t       light_color[5];            // 498
  uint8_t       light_correction;          // 49D
  uint8_t       light_dimmer;              // 49E
  uint8_t       rule_enabled;              // 49F
  uint8_t       rule_once;                 // 4A0
  uint8_t       light_fade;                // 4A1
  uint8_t       light_speed;               // 4A2
  uint8_t       light_scheme;              // 4A3
  uint8_t       light_width;               // 4A4
  uint8_t       knx_GA_registered;         // 4A5  Number of Group Address to read
  uint16_t      light_wakeup;              // 4A6
  uint8_t       knx_CB_registered;         // 4A8  Number of Group Address to write
  char          web_password[33];          // 4A9
  uint8_t       interlock[MAX_INTERLOCKS]; // 4CA
  char          ntp_server[3][33];         // 4CE
  uint8_t       ina219_mode;               // 531
  uint16_t      pulse_timer[MAX_PULSETIMERS]; // 532
  uint16_t      button_debounce;           // 542
  uint32_t      ip_address[4];             // 544
  unsigned long energy_kWhtotal;           // 554
  char          mqtt_fulltopic[100];       // 558
  SysBitfield2  flag2;                     // 5BC
  unsigned long pulse_counter[MAX_COUNTERS];  // 5C0
  uint16_t      pulse_counter_type;        // 5D0
  uint16_t      pulse_counter_debounce;    // 5D2
  uint8_t       rf_code[17][9];            // 5D4
  uint8_t       timezone_minutes;          // 66D
  uint16_t      switch_debounce;           // 66E
  Timer         timer[MAX_TIMERS];         // 670
  int           latitude;                  // 6B0
  int           longitude;                 // 6B4
  uint16_t      knx_physsical_addr;        // 6B8  (address_t is a uint16_t)
  uint16_t      knx_GA_addr[MAX_KNX_GA];   // 6BA  (address_t is a uint16_t) x KNX_max_GA
  uint16_t      knx_CB_addr[MAX_KNX_CB];   // 6CE  (address_t is a uint16_t) x KNX_max_CB
  uint8_t       knx_GA_param[MAX_KNX_GA];  // 6E2  Type of Input (relay changed, button pressed, sensor read <-teleperiod)
  uint8_t       knx_CB_param[MAX_KNX_CB];  // 6EC  Type of Output (set relay, toggle relay, reply sensor value)
  Mcp230xxCfg   mcp230xx_config[16];       // 6F6
  uint8_t       mcp230xx_int_prio;         // 716
  SensorCfg1    SensorBits1;               // 717  On/Off settings used by Sensor Commands
  uint16_t      mcp230xx_int_timer;        // 718
  uint8_t       rgbwwTable[5];             // 71A
  uint8_t       user_template_base;        // 71F
  mytmplt       user_template;             // 720  29 bytes
  uint8_t       novasds_period;            // 73D
  uint8_t       web_color[18][3];          // 73E
  uint16_t      display_width;             // 774
  uint16_t      display_height;            // 776
  uint16_t      baudrate;                  // 778
  uint16_t      sbaudrate;                 // 77A
  EnergyUsage   energy_usage;              // 77C
//  uint32_t      drivers[3];                // 794 - 6.5.0.12 replaced by below three entries
  uint32_t      adc_param1;                // 794
  uint32_t      adc_param2;                // 798
  int           adc_param3;                // 79C
  uint32_t      monitors;                  // 7A0
  uint32_t      sensors[3];                // 7A4 Normal WebSensor, Debug SetSensor
  uint32_t      displays;                  // 7B0
  uint32_t      energy_kWhtotal_time;      // 7B4
  unsigned long weight_item;               // 7B8 Weight of one item in gram * 10
  uint16_t      ledmask;                   // 7BC
  uint16_t      weight_max;                // 7BE Total max weight in kilogram
  unsigned long weight_reference;          // 7C0 Reference weight in gram
  unsigned long weight_calibration;        // 7C4
  unsigned long energy_frequency_calibration;  // 7C8 also used by HX711 to save last weight
  uint16_t      web_refresh;               // 7CC
  char          mems[MAX_RULE_MEMS][10];   // 7CE
  char          rules[MAX_RULE_SETS][MAX_RULE_SIZE];  // 800 uses 512 bytes in v5.12.0m, 3 x 512 bytes in v5.14.0b
  TuyaFnidDpidMap tuya_fnid_map[MAX_TUYA_FUNCTIONS];  // E00    32 bytes
  uint16_t      ina226_r_shunt[4];         // E20
  uint16_t      ina226_i_fs[4];            // E28

  uint8_t       free_e30[456];             // E30

  uint32_t      cfg_timestamp;             // FF8
  uint32_t      cfg_crc32;                 // FFC
} Settings;

struct RTCRBT {
  uint16_t      valid;                     // 280 (RTC memory offset 100 - sizeof(RTCRBT))
  uint8_t       fast_reboot_count;         // 282
  uint8_t       free_003[1];               // 283
} RtcReboot;

struct RTCMEM {
  uint16_t      valid;                     // 290 (RTC memory offset 100)
  uint8_t       oswatch_blocked_loop;      // 292
  uint8_t       ota_loader;                // 293
  unsigned long energy_kWhtoday;              // 294
  unsigned long energy_kWhtotal;              // 298
  unsigned long pulse_counter[MAX_COUNTERS];  // 29C
  power_t       power;                     // 2AC
  EnergyUsage   energy_usage;              // 2B0
  uint8_t       free_038[36];              // 2C8
                                           // 2EC - 2FF free locations
} RtcSettings;

struct TIME_T {
  uint8_t       second;
  uint8_t       minute;
  uint8_t       hour;
  uint8_t       day_of_week;               // sunday is day 1
  uint8_t       day_of_month;
  uint8_t       month;
  char          name_of_month[4];
  uint16_t      day_of_year;
  uint16_t      year;
  unsigned long days;
  unsigned long valid;
} RtcTime;

struct XDRVMAILBOX {
  bool          grpflg;
  bool          usridx;
  uint16_t      command_code;
  uint32_t      index;
  uint32_t      data_len;
  int32_t       payload;
  char         *topic;
  char         *data;
  char         *command;
} XdrvMailbox;

const uint8_t MAX_RULES_FLAG = 8;          // Number of bits used in RulesBitfield (tricky I know...)
typedef union {                            // Restricted by MISRA-C Rule 18.4 but so useful...
  uint16_t data;                           // Allow bit manipulation
  struct {
    uint16_t system_boot : 1;
    uint16_t time_init : 1;
    uint16_t time_set : 1;
    uint16_t mqtt_connected : 1;
    uint16_t mqtt_disconnected : 1;
    uint16_t wifi_connected : 1;
    uint16_t wifi_disconnected : 1;
    uint16_t http_init : 1;
    uint16_t spare08 : 1;
    uint16_t spare09 : 1;
    uint16_t spare10 : 1;
    uint16_t spare11 : 1;
    uint16_t spare12 : 1;
    uint16_t spare13 : 1;
    uint16_t spare14 : 1;
    uint16_t spare15 : 1;
  };
} RulesBitfield;

typedef union {
  uint8_t data;
  struct {
    uint8_t wifi_down : 1;
    uint8_t mqtt_down : 1;
    uint8_t spare02 : 1;
    uint8_t spare03 : 1;
    uint8_t spare04 : 1;
    uint8_t spare05 : 1;
    uint8_t spare06 : 1;
    uint8_t spare07 : 1;
  };
} StateBitfield;

// See issue https://github.com/esp8266/Arduino/issues/2913
#ifdef USE_ADC_VCC
  ADC_MODE(ADC_VCC);                       // Set ADC input for Power Supply Voltage usage
#endif

#endif  // _SETTINGS_H_