crossbar.h

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/*
  crossbar.h - signal crossbar definitions
 
  Part of grblHAL
 
  Copyright (c) 2021-2025 Terje Io
 
  grblHAL 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.
 
  grblHAL 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 grblHAL. If not, see <http://www.gnu.org/licenses/>.
*/
 
#ifndef _CROSSBAR_H_
#define _CROSSBAR_H_
 
#include "nuts_bolts.h"
 
typedef enum {
// NOTE: the sequence of the following enums MUST match the control_signals_t layout
    Input_Reset = 0,
    Input_FeedHold,
    Input_CycleStart,
    Input_SafetyDoor,
    Input_BlockDelete,
    Input_StopDisable,
    Input_EStop,
    Input_ProbeDisconnect,
    Input_MotorFault,
    Input_MotorWarning,
    Input_LimitsOverride,
    Input_SingleBlock,
    Input_Unassigned,
    Input_ProbeOvertravel,
    Input_Probe,
// end control_signals_t sequence
    Input_MotorFaultX,
    Input_MotorFaultY,
    Input_MotorFaultZ,
    Input_MotorFaultA,
    Input_MotorFaultB,
    Input_MotorFaultC,
    Input_MotorFaultU,
    Input_MotorFaultV,
    Input_MotorFaultX_2,
    Input_MotorFaultY_2,
    Input_MotorFaultZ_2,
    Input_Probe2,
    Input_Probe2Overtravel,
    Input_Toolsetter,
    Input_ToolsetterOvertravel,
    Input_MPGSelect,
    Input_ModeSelect = Input_MPGSelect, // Deprecated
    Input_LimitX,
    Input_LimitX2,
    Input_LimitX_2 = Input_LimitX2, // Deprecated
    Input_LimitX_Max,
    Input_HomeX,
    Input_HomeX_2,
    Input_LimitY,
    Input_LimitY2,
    Input_LimitY_2 = Input_LimitY2, // Deprecated
    Input_LimitY_Max,
    Input_HomeY,
    Input_HomeY_2,
    Input_LimitZ,
    Input_LimitZ2,
    Input_LimitZ_2 = Input_LimitZ2, // Deprecated
    Input_LimitZ_Max,
    Input_HomeZ,
    Input_HomeZ_2,
    Input_LimitA,
    Input_LimitA_Max,
    Input_HomeA,
    Input_LimitB,
    Input_LimitB_Max,
    Input_HomeB,
    Input_LimitC,
    Input_LimitC_Max,
    Input_HomeC,
    Input_LimitU,
    Input_LimitU_Max,
    Input_HomeU,
    Input_LimitV,
    Input_LimitV_Max,
    Input_HomeV,
    Input_SpindleIndex,
    Input_SpindlePulse,
    Input_Aux0,
    Input_Aux1,
    Input_Aux2,
    Input_Aux3,
    Input_Aux4,
    Input_Aux5,
    Input_Aux6,
    Input_Aux7,
    Input_Aux8,
    Input_Aux9,
    Input_Aux10,
    Input_Aux11,
    Input_Aux12,
    Input_Aux13,
    Input_Aux14,
    Input_Aux15,
    Input_Aux16,
    Input_Aux17,
    Input_Aux18,
    Input_Aux19,
    Input_Aux20,
    Input_Aux21,
    Input_Aux22,
    Input_Aux23,
    Input_AuxMax = Input_Aux23,
    Input_Analog_Aux0,
    Input_Analog_Aux1,
    Input_Analog_Aux2,
    Input_Analog_Aux3,
    Input_Analog_Aux4,
    Input_Analog_Aux5,
    Input_Analog_Aux6,
    Input_Analog_Aux7,
    Input_Analog_AuxMax = Input_Analog_Aux7,
// Output pins
    Output_StepX,
    Outputs = Output_StepX,
    Output_StepX2,
    Output_StepX_2 = Output_StepX2, // deprecated
    Output_StepY,
    Output_StepY2,
    Output_StepY_2 = Output_StepY2, // deprecated
    Output_StepZ,
    Output_StepZ2,
    Output_StepZ_2 = Output_StepZ2, // deprecated
    Output_StepA,
    Output_StepB,
    Output_StepC,
    Output_StepU,
    Output_StepV,
    Output_DirX,
    Output_DirX2,
    Output_DirX_2 = Output_DirX2, // deprecated
    Output_DirY,
    Output_DirY2,
    Output_DirY_2 = Output_DirY2, // deprecated
    Output_DirZ,
    Output_DirZ2,
    Output_DirZ_2 = Output_DirZ2, // deprecated
    Output_DirA,
    Output_DirB,
    Output_DirC,
    Output_DirU,
    Output_DirV,
    Output_MotorChipSelect,
    Output_MotorChipSelectX,
    Output_MotorChipSelectY,
    Output_MotorChipSelectZ,
    Output_MotorChipSelectM3,
    Output_MotorChipSelectM4,
    Output_MotorChipSelectM5,
    Output_MotorChipSelectM6,
    Output_MotorChipSelectM7,
    Output_StepperPower,
    Output_StepperEnable,
    Output_StepperEnableSTEPPERS = Output_StepperEnable,
    Output_StepperEnableX,
    Output_StepperEnableX2 = Output_StepperEnableX,
    Output_StepperEnableY,
    Output_StepperEnableY2 = Output_StepperEnableY,
    Output_StepperEnableZ,
    Output_StepperEnableZ2 = Output_StepperEnableZ,
    Output_StepperEnableA,
    Output_StepperEnableB,
    Output_StepperEnableU,
    Output_StepperEnableV,
    Output_StepperEnableC,
    Output_StepperEnableXY,
    Output_StepperEnableAB,
    Output_SpindleOn,
    Output_SpindleDir,
    Output_SpindlePWM,
    Output_Spindle1On,
    Output_Spindle1Dir,
    Output_Spindle1PWM,
    Output_CoolantMist,
    Output_CoolantFlood,
    Output_Aux0,
    Output_Aux1,
    Output_Aux2,
    Output_Aux3,
    Output_Aux4,
    Output_Aux5,
    Output_Aux6,
    Output_Aux7,
    Output_Aux8,
    Output_Aux9,
    Output_Aux10,
    Output_Aux11,
    Output_Aux12,
    Output_Aux13,
    Output_Aux14,
    Output_Aux15,
    Output_Aux16,
    Output_Aux17,
    Output_Aux18,
    Output_Aux19,
    Output_Aux20,
    Output_Aux21,
    Output_Aux22,
    Output_Aux23,
    Output_AuxMax = Output_Aux23,
    Output_Analog_Aux0,
    Output_Analog_Aux1,
    Output_Analog_Aux2,
    Output_Analog_Aux3,
    Output_Analog_Aux4,
    Output_Analog_Aux5,
    Output_Analog_Aux6,
    Output_Analog_Aux7,
    Output_Analog_AuxMax = Output_Analog_Aux7,
    Output_LED,
    Output_LED_R,
    Output_LED_G,
    Output_LED_B,
    Output_LED_W,
    Output_LED_Adressable,
    Output_LED0_Adressable = Output_LED_Adressable,
    Output_LED1_Adressable,
    Output_CoProc_Reset,
    Output_CoProc_Boot0,
// Multipin peripherals
    Input_MISO,
    Multipin = Input_MISO,
    Output_MOSI,
    Output_SPICLK,
    Output_SPICS,
    Output_FlashCS,
    Output_SdCardCS,
    Input_SdCardDetect,
    Output_SPIRST,
    Input_SPIIRQ,
    Output_SCK,
    Output_I2CSCK = Output_SCK,
    Bidirectional_SDA,
    Bidirectional_I2CSDA = Bidirectional_SDA,
    Input_KeypadStrobe, // To be deprecated? Use Input_I2CStrobe instead.
    Input_I2CStrobe,
    Input_RX,
    Output_TX,
    Output_RTS,
    Input_QEI_A,
    Input_QEI_B,
    Input_QEI_Select,
    Input_QEI_Index,
    Virtual_Pin,
// Single pin bidirectional peripherals
    Bidirectional_MotorUARTX,
    Bidirectional = Bidirectional_MotorUARTX,
    Bidirectional_MotorUARTY,
    Bidirectional_MotorUARTZ,
    Bidirectional_MotorUARTM3,
    Bidirectional_MotorUARTM4,
    Bidirectional_MotorUARTM5,
    Bidirectional_MotorUARTM6,
    Bidirectional_MotorUARTM7
} pin_function_t;
 
#define PIN_ISINPUT(pin) (pin < Outputs)
#define PIN_ISOUTPUT(pin) (pin >= Outputs && pin < Bidirectional)
#define PIN_ISBIDIRECTIONAL(pin) (pin >= Bidirectional)
 
typedef struct {
    pin_function_t function;
    const char *name;
} pin_name_t;
 
PROGMEM static const pin_name_t pin_names[] = {
    { .function = Input_Reset,                .name = "Reset" },
    { .function = Input_FeedHold,             .name = "Feed hold" },
    { .function = Input_CycleStart,           .name = "Cycle start" },
    { .function = Input_SafetyDoor,           .name = "Safety door" },
    { .function = Input_BlockDelete,          .name = "Block delete" },
    { .function = Input_StopDisable,          .name = "Stop disable" },
    { .function = Input_EStop,                .name = "Emergency stop" },
    { .function = Input_ProbeDisconnect,      .name = "Probe disconnect" },
    { .function = Input_MotorFault,           .name = "Motor fault" },
    { .function = Input_MotorWarning,         .name = "Motor warning" },
    { .function = Input_LimitsOverride,       .name = "Limits override" },
    { .function = Input_SingleBlock,          .name = "Single block" },
    { .function = Input_ProbeOvertravel,      .name = "Probe overtravel" },
    { .function = Input_Probe,                .name = "Probe" },
    { .function = Input_MotorFaultX,          .name = "X motor fault" },
    { .function = Input_MotorFaultY,          .name = "Y motor fault" },
    { .function = Input_MotorFaultZ,          .name = "Z motor fault" },
    { .function = Input_MotorFaultX_2,        .name = "X motor fault 2" },
    { .function = Input_MotorFaultY_2,        .name = "Y motor fault 2" },
    { .function = Input_MotorFaultZ_2,        .name = "Z motor fault 2" },
    { .function = Input_Probe2,               .name = "Probe 2" },
    { .function = Input_Probe2Overtravel,     .name = "Probe 2 overtravel" },
    { .function = Input_Toolsetter,           .name = "Toolsetter" },
    { .function = Input_ToolsetterOvertravel, .name = "Toolsetter overtravel" },
    { .function = Input_MPGSelect,            .name = "MPG mode select" },
    { .function = Input_LimitX,               .name = "X limit min" },
    { .function = Input_LimitX_2,             .name = "X limit min 2" },
    { .function = Input_LimitX_Max,           .name = "X limit max" },
    { .function = Input_HomeX,                .name = "X home" },
    { .function = Input_HomeX_2,              .name = "X home 2" },
    { .function = Input_LimitY,               .name = "Y limit min" },
    { .function = Input_LimitY_2,             .name = "Y limit min 2" },
    { .function = Input_LimitY_Max,           .name = "Y limit max" },
    { .function = Input_HomeY,                .name = "Y home" },
    { .function = Input_HomeY_2,              .name = "Y home 2" },
    { .function = Input_LimitZ,               .name = "Z limit min" },
    { .function = Input_LimitZ_2,             .name = "Z limit min 2" },
    { .function = Input_LimitZ_Max,           .name = "Z limit max" },
    { .function = Input_HomeZ,                .name = "Z home" },
    { .function = Input_HomeZ_2,              .name = "Z home 2" },
#ifndef NO_SETTINGS_DESCRIPTIONS
    { .function = Input_SpindleIndex,         .name = "Spindle index" },
    { .function = Input_SpindlePulse,         .name = "Spindle pulse" },
    { .function = Input_Aux0,                 .name = "Aux in 0" },
    { .function = Input_Aux1,                 .name = "Aux in 1" },
    { .function = Input_Aux2,                 .name = "Aux in 2" },
    { .function = Input_Aux3,                 .name = "Aux in 3" },
    { .function = Input_Aux4,                 .name = "Aux in 4" },
    { .function = Input_Aux5,                 .name = "Aux in 5" },
    { .function = Input_Aux6,                 .name = "Aux in 6" },
    { .function = Input_Aux7,                 .name = "Aux in 7" },
    { .function = Input_Aux8,                 .name = "Aux in 8" },
    { .function = Input_Aux9,                 .name = "Aux in 9" },
    { .function = Input_Aux10,                .name = "Aux in 10" },
    { .function = Input_Aux11,                .name = "Aux in 11" },
    { .function = Input_Aux12,                .name = "Aux in 12" },
    { .function = Input_Aux13,                .name = "Aux in 13" },
    { .function = Input_Aux14,                .name = "Aux in 14" },
    { .function = Input_Aux15,                .name = "Aux in 15" },
    { .function = Input_Aux16,                .name = "Aux in 16" },
    { .function = Input_Aux17,                .name = "Aux in 17" },
    { .function = Input_Aux18,                .name = "Aux in 18" },
    { .function = Input_Aux19,                .name = "Aux in 19" },
    { .function = Input_Aux20,                .name = "Aux in 20" },
    { .function = Input_Aux21,                .name = "Aux in 21" },
    { .function = Input_Aux22,                .name = "Aux in 22" },
    { .function = Input_Aux23,                .name = "Aux in 23" },
    { .function = Input_Analog_Aux0,          .name = "Aux analog in 0" },
    { .function = Input_Analog_Aux1,          .name = "Aux analog in 1" },
    { .function = Input_Analog_Aux2,          .name = "Aux analog in 2" },
    { .function = Input_Analog_Aux3,          .name = "Aux analog in 3" },
    { .function = Input_Analog_Aux4,          .name = "Aux analog in 4" },
    { .function = Input_Analog_Aux5,          .name = "Aux analog in 5" },
    { .function = Input_Analog_Aux6,          .name = "Aux analog in 6" },
    { .function = Input_Analog_Aux7,          .name = "Aux analog in 7" },
#endif
    { .function = Output_StepX,               .name = "X step" },
    { .function = Output_StepX2,              .name = "X2 step" },
    { .function = Output_StepY,               .name = "Y step" },
    { .function = Output_StepY2,              .name = "Y2 step" },
    { .function = Output_StepZ,               .name = "Z step" },
    { .function = Output_StepZ2,              .name = "Z2 step" },
    { .function = Output_DirX,                .name = "X dir" },
    { .function = Output_DirX2,               .name = "X2 dir" },
    { .function = Output_DirY,                .name = "Y dir" },
    { .function = Output_DirY2,               .name = "Y2 dir" },
    { .function = Output_DirZ,                .name = "Z dir" },
    { .function = Output_DirZ2,               .name = "Z2 dir" },
    { .function = Output_StepperPower,        .name = "Stepper power" },
    { .function = Output_StepperEnable,       .name = "Steppers enable" },
    { .function = Output_StepperEnableX,      .name = "X enable" },
    { .function = Output_StepperEnableY,      .name = "Y enable" },
    { .function = Output_StepperEnableZ,      .name = "Z enable" },
    { .function = Output_StepperEnableXY,     .name = "XY enable" },
#ifdef A_AXIS
    { .function = Output_StepA,               .name = "A step" },
    { .function = Output_DirA,                .name = "A dir" },
    { .function = Output_StepperEnableA,      .name = "A enable" },
    { .function = Input_LimitA,               .name = "A limit min" },
    { .function = Input_LimitA_Max,           .name = "A limit max" },
    { .function = Input_HomeA,                .name = "A home" },
    { .function = Input_MotorFaultA,          .name = "A motor fault" },
#endif
#ifdef B_AXIS
    { .function = Output_StepB,               .name = "B step" },
    { .function = Output_DirB,                .name = "B dir" },
    { .function = Output_StepperEnableB,      .name = "B enable" },
    { .function = Output_StepperEnableAB,     .name = "AB enable" },
    { .function = Input_LimitB,               .name = "B limit min" },
    { .function = Input_LimitB_Max,           .name = "B limit max" },
    { .function = Input_HomeB,                .name = "B home" },
    { .function = Input_MotorFaultB,          .name = "B motor fault" },
#endif
#ifdef C_AXIS
    { .function = Output_StepC,               .name = "C step" },
    { .function = Output_DirC,                .name = "C dir" },
    { .function = Output_StepperEnableC,      .name = "C enable" },
    { .function = Input_LimitC,               .name = "C limit min" },
    { .function = Input_LimitC_Max,           .name = "C limit max" },
    { .function = Input_HomeC,                .name = "C home" },
    { .function = Input_MotorFaultC,          .name = "C motor fault" },
#endif
#ifdef U_AXIS
    { .function = Output_StepU,               .name = "U step" },
    { .function = Output_DirU,                .name = "U dir" },
    { .function = Output_StepperEnableU,      .name = "U enable" },
    { .function = Input_LimitU,               .name = "U limit min" },
    { .function = Input_LimitU_Max,           .name = "U limit max" },
    { .function = Input_HomeU,                .name = "U home" },
    { .function = Input_MotorFaultU,          .name = "U motor fault" },
#endif
#ifdef V_AXIS
    { .function = Output_StepV,               .name = "V step" },
    { .function = Output_DirV,                .name = "V dir" },
    { .function = Output_StepperEnableV,      .name = "V enable" },
    { .function = Input_LimitV,               .name = "V limit min" },
    { .function = Input_LimitV_Max,           .name = "V limit max" },
    { .function = Input_HomeV,                .name = "V home" },
    { .function = Input_MotorFaultV,          .name = "V motor fault" },
#endif
#ifndef NO_SETTINGS_DESCRIPTIONS
    { .function = Output_MotorChipSelect,     .name = "Motor CS" },
    { .function = Output_MotorChipSelectX,    .name = "Motor CSX" },
    { .function = Output_MotorChipSelectY,    .name = "Motor CSY" },
    { .function = Output_MotorChipSelectZ,    .name = "Motor CSZ" },
    { .function = Output_MotorChipSelectM3,   .name = "Motor CSM3" },
    { .function = Output_MotorChipSelectM4,   .name = "Motor CSM4" },
    { .function = Output_MotorChipSelectM5,   .name = "Motor CSM5" },
    { .function = Output_MotorChipSelectM6,   .name = "Motor CSM6" },
    { .function = Output_MotorChipSelectM7,   .name = "Motor CSM7" },
    { .function = Output_SpindleOn,           .name = "Spindle on" },
    { .function = Output_SpindleDir,          .name = "Spindle direction" },
    { .function = Output_SpindlePWM,          .name = "Spindle PWM" },
    { .function = Output_Spindle1On,          .name = "Spindle 2 on" },
    { .function = Output_Spindle1Dir,         .name = "Spindle 2 direction" },
    { .function = Output_Spindle1PWM,         .name = "Spindle 2 PWM" },
    { .function = Output_CoolantMist,         .name = "Mist" },
    { .function = Output_CoolantFlood,        .name = "Flood" },
    { .function = Output_Aux0,                .name = "Aux out 0" },
    { .function = Output_Aux1,                .name = "Aux out 1" },
    { .function = Output_Aux2,                .name = "Aux out 2" },
    { .function = Output_Aux3,                .name = "Aux out 3" },
    { .function = Output_Aux4,                .name = "Aux out 4" },
    { .function = Output_Aux5,                .name = "Aux out 5" },
    { .function = Output_Aux6,                .name = "Aux out 6" },
    { .function = Output_Aux7,                .name = "Aux out 7" },
    { .function = Output_Aux8,                .name = "Aux out 8" },
    { .function = Output_Aux9,                .name = "Aux out 9" },
    { .function = Output_Aux10,               .name = "Aux out 10" },
    { .function = Output_Aux11,               .name = "Aux out 11" },
    { .function = Output_Aux12,               .name = "Aux out 12" },
    { .function = Output_Aux13,               .name = "Aux out 13" },
    { .function = Output_Aux14,               .name = "Aux out 14" },
    { .function = Output_Aux15,               .name = "Aux out 15" },
    { .function = Output_Aux15,               .name = "Aux out 16" },
    { .function = Output_Aux16,               .name = "Aux out 17" },
    { .function = Output_Aux17,               .name = "Aux out 18" },
    { .function = Output_Aux18,               .name = "Aux out 19" },
    { .function = Output_Aux19,               .name = "Aux out 20" },
    { .function = Output_Aux20,               .name = "Aux out 21" },
    { .function = Output_Aux21,               .name = "Aux out 22" },
    { .function = Output_Aux22,               .name = "Aux out 23" },
    { .function = Output_Analog_Aux0,         .name = "Aux analog out 0" },
    { .function = Output_Analog_Aux1,         .name = "Aux analog out 1" },
    { .function = Output_Analog_Aux2,         .name = "Aux analog out 2" },
    { .function = Output_Analog_Aux3,         .name = "Aux analog out 3" },
    { .function = Output_Analog_Aux4,         .name = "Aux analog out 4" },
    { .function = Output_Analog_Aux5,         .name = "Aux analog out 5" },
    { .function = Output_Analog_Aux6,         .name = "Aux analog out 6" },
    { .function = Output_Analog_Aux7,         .name = "Aux analog out 7" },
    { .function = Output_LED,                 .name = "LED" },
    { .function = Output_LED_R,               .name = "LED R" },
    { .function = Output_LED_G,               .name = "LED G" },
    { .function = Output_LED_B,               .name = "LED B" },
    { .function = Output_LED_W,               .name = "LED W" },
    { .function = Output_LED_Adressable,      .name = "LED adressable" },
    { .function = Output_LED1_Adressable,     .name = "LED adressable 1" },
    { .function = Output_CoProc_Reset,        .name = "CoProc Reset" },
    { .function = Output_CoProc_Boot0,        .name = "CoProc Boot0" },
    { .function = Input_MISO,                 .name = "MISO" },
    { .function = Output_MOSI,                .name = "MOSI" },
    { .function = Output_SPICLK,              .name = "SPI CLK" },
    { .function = Output_SPICS,               .name = "SPI CS" },
    { .function = Output_FlashCS,             .name = "Flash CS" },
    { .function = Output_SdCardCS,            .name = "SD card CS" },
    { .function = Input_SdCardDetect,         .name = "SD card detect" },
    { .function = Output_SPIRST,              .name = "SPI reset" },
    { .function = Input_SPIIRQ,               .name = "SPI IRQ" },
    { .function = Output_I2CSCK,              .name = "I2C SCK" },
    { .function = Bidirectional_SDA,          .name = "I2C SDA" },
    { .function = Input_KeypadStrobe,         .name = "Keypad strobe" },
    { .function = Input_I2CStrobe,            .name = "I2C strobe" },
    { .function = Input_RX,                   .name = "RX" },
    { .function = Output_TX,                  .name = "TX" },
    { .function = Output_RTS,                 .name = "RTS" },
    { .function = Input_QEI_A,                .name = "QEI A" },
    { .function = Input_QEI_B,                .name = "QEI B" },
    { .function = Input_QEI_Select,           .name = "QEI select" },
    { .function = Input_QEI_Index,            .name = "QEI index" },
    { .function = Virtual_Pin,                .name = "Virtual" },
    { .function = Bidirectional_MotorUARTX,   .name = "UART X" },
    { .function = Bidirectional_MotorUARTY,   .name = "UART Y" },
    { .function = Bidirectional_MotorUARTZ,   .name = "UART Z" },
    { .function = Bidirectional_MotorUARTM3,  .name = "UART M3" },
    { .function = Bidirectional_MotorUARTM4,  .name = "UART M4" },
    { .function = Bidirectional_MotorUARTM5,  .name = "UART M5" },
    { .function = Bidirectional_MotorUARTM6,  .name = "UART M6" },
    { .function = Bidirectional_MotorUARTM7,  .name = "UART M7" }
#endif
};
 
typedef enum {
    PinGroup_SpindleControl = 0,
    PinGroup_SpindlePWM,
    PinGroup_Coolant,
    PinGroup_SpindlePulse,
    PinGroup_SpindleIndex,
    PinGroup_StepperPower,
    PinGroup_StepperEnable,
    PinGroup_StepperStep,
    PinGroup_StepperDir,
    PinGroup_AuxOutput,
    PinGroup_AuxInputAnalog,
    PinGroup_AuxOutputAnalog,
    PinGroup_MotorChipSelect,
    PinGroup_MotorUART,
    PinGroup_I2C,
    PinGroup_SPI,
    PinGroup_UART1,
    PinGroup_UART = PinGroup_UART1,
    PinGroup_UART2,
    PinGroup_UART3,
    PinGroup_UART4,
    PinGroup_USB,
    PinGroup_CAN,
    PinGroup_LED,
    PinGroup_Home,
    PinGroup_Virtual,
// Interrupt capable pins that may have debounce processing enabled
    PinGroup_Control       = (1<<8),
    PinGroup_Limit         = (1<<9),
    PinGroup_LimitMax      = (1<<10),
    PinGroup_Probe         = (1<<11),
    PinGroup_Keypad        = (1<<12),
    PinGroup_MPG           = (1<<13),
    PinGroup_QEI           = (1<<14),
    PinGroup_QEI_Select    = (1<<15),
    PinGroup_QEI_Index     = (1<<16),
    PinGroup_Motor_Warning = (1<<17),
    PinGroup_Motor_Fault   = (1<<18),
    PinGroup_SdCard        = (1<<19),
    PinGroup_AuxInput      = (1<<20)
} pin_group_t;
 
typedef enum {
    IRQ_Mode_None          = 0b00000, 
    IRQ_Mode_Rising        = 0b00001, 
    IRQ_Mode_Falling       = 0b00010, 
    IRQ_Mode_RisingFalling = 0b00011, 
    IRQ_Mode_Change        = 0b00100, 
    IRQ_Mode_Edges         = 0b00111, 
    IRQ_Mode_High          = 0b01000, 
    IRQ_Mode_Low           = 0b10000, 
    IRQ_Mode_All           = 0b11111  
} pin_irq_mode_t;
 
typedef enum {
    IRQ_I2C_Strobe = 0,
    IRQ_SPI
} irq_type_t;
 
typedef bool (*irq_callback_ptr)(uint_fast8_t id, bool level);
 
typedef struct driver_irq_handler {
    irq_type_t type;
    irq_callback_ptr callback;
    struct driver_irq_handler *next;
} driver_irq_handler_t;
 
typedef enum {
    PullMode_None    = 0b00, 
    PullMode_Up      = 0b01, 
    PullMode_Down    = 0b10, 
    PullMode_UpDown  = 0b11  
} pull_mode_t;
 
typedef enum {
    Resolution_4bit = 0, 
    Resolution_8bit,     
    Resolution_10bit,    
    Resolution_12bit,    
    Resolution_14bit,    
    Resolution_16bit,    
    Resolution_18bit,    
    Resolution_20bit,    
    Resolution_24bit,    
    Resolution_32bit     
} resolution_t;
 
#define PINMODE_NONE        (0)
#define PINMODE_OUTPUT      (1U<<1)
#ifndef __LPC17XX__
#define PINMODE_OD          (1U<<2)
#endif
#define PINMODE_PULLUP      (PullMode_Up<<3)
#define PINMODE_PULLDOWN    (PullMode_Down<<3)
#define PINMODE_ANALOG      (1U<<11)
#define PINMODE_PWM         (1U<<12)
#define PINMODE_PWM_SERVO   (1U<<13)
 
typedef union {
    uint32_t mask;
    struct {
        uint32_t input      :1,
                 output     :1,
                 open_drain :1,
                 pull_mode  :2, 
                 irq_mode   :5, 
                 invert     :1,
                 analog     :1,
                 pwm        :1,
                 servo_pwm  :1,
                 claimable  :1,
                 debounce   :1,
                 external   :1,
                 async      :1,
                 resolution :4, 
                 unused     :10;
    };
} pin_cap_t;
 
typedef union {
    uint16_t mask;
    struct {
        uint16_t input      :1,
                 output     :1,
                 open_drain :1,
                 pull_mode  :2,
                 irq_mode   :5,
                 inverted   :1,
                 analog     :1,
                 pwm        :1,
                 servo_pwm  :1,
                 claimed    :1,
                 debounce   :1;
    };
} pin_mode_t;
 
#define XBAR_SET_CAP(cap, mode) { cap.mask = mode.mask; cap.claimable = !mode.claimed; }
#define XBAR_SET_DIN_INFO(pin, pin_id, src, cfg_fn, get_val_fn) { \
  pin.id = pin_id; \
  pin.mode = src.mode; \
  pin.cap = src.cap; \
  pin.cap.invert = On; \
  pin.cap.claimable = !src.mode.claimed; \
  pin.function = src.id; \
  pin.group = src.group; \
  pin.pin = src.pin; \
  pin.port = (void *)src.port; \
  pin.description = src.description; \
  pin.config = cfg_fn; \
  pin.get_value = get_val_fn; \
}
#define XBAR_SET_DOUT_INFO(pin, pin_id, src, cfg_fn, get_val_fn) { \
  pin.id = pin_id; \
  pin.mode = src.mode; \
  pin.cap.mask = src.mode.mask; \
  pin.cap.invert = On; \
  pin.cap.claimable = !src.mode.claimed; \
  pin.function = src.id; \
  pin.group = src.group; \
  pin.pin = src.pin; \
  pin.port = (void *)src.port; \
  pin.description = src.description; \
  pin.config = cfg_fn; \
  pin.get_value = get_val_fn; \
}
 
typedef struct {
    bool inverted;
    bool debounce;
    pull_mode_t pull_mode;
} gpio_in_config_t;
 
typedef struct {
    bool inverted;
    bool open_drain;
    bool pwm;
} gpio_out_config_t;
 
typedef struct {
    float freq_hz;   //
    float min;
    float max;
    float off_value; // percent of period
    float min_value; // percent of period
    float max_value; // percent of period
    bool invert;
    bool servo_mode;
} pwm_config_t;
 
typedef union
{
    pwm_config_t *pwm_config;
    gpio_in_config_t *gpio_in_config;
    gpio_out_config_t *gpio_out_config;
} xbar_cfg_ptr_t __attribute__ ((__transparent_union__));
 
struct xbar;
 
typedef float (*xbar_get_value_ptr)(struct xbar *pin);
typedef void (*xbar_set_value_ptr)(struct xbar *pin, float value);
typedef bool (*xbar_set_function_ptr)(struct xbar *pin, pin_function_t function);
typedef void (*xbar_event_ptr)(bool on);
typedef bool (*xbar_config_ptr)(struct xbar *pin, xbar_cfg_ptr_t cfg_data, bool persistent);
 
typedef struct {
    pin_function_t function;
    uint8_t aux_port;
    pin_irq_mode_t irq_mode;
    control_signals_t cap;
    uint8_t pin;
    void *port;
    void *input;
} aux_ctrl_t;
 
typedef struct {
    pin_function_t function;
    uint8_t aux_port;
    uint8_t pin;
    void *port;
    void *output;
} aux_ctrl_out_t;
 
typedef struct xbar {
    void *ports_id;
    uint8_t id;                         
    pin_function_t function;            
    pin_group_t group;                  
    void *port;                         
    const char *description;            
    uint_fast8_t pin;                   
    pin_cap_t cap;                      
    pin_mode_t mode;                    
    xbar_config_ptr config;             
    xbar_get_value_ptr get_value;       
    xbar_set_value_ptr set_value;       
    xbar_set_function_ptr set_function; 
//    xbar_event_ptr on_event;            //!< Not used - might be removed.
} xbar_t;
 
typedef struct {
    pin_function_t function;
    pin_group_t group;
    void *port;
    uint_fast8_t pin;
    pin_mode_t mode;
    const char *description;
} periph_pin_t;
 
typedef struct periph_signal {
    periph_pin_t pin;
    struct periph_signal *next;
} periph_signal_t;
 
typedef union {
    uint8_t mask;
    struct {
        uint8_t limits      :1,
                aux_inputs  :1,
                safety_door :1,
                qei_select  :1,
                unassigned  :4;
    };
} pin_debounce_t;
 
static inline uint8_t xbar_fault_pin_to_axis (pin_function_t fn)
{
    return fn >= Input_MotorFaultX && fn <= Input_MotorFaultV ? fn - Input_MotorFaultX : (fn >= Input_MotorFaultX_2 && fn <= Input_MotorFaultZ_2 ? fn - Input_MotorFaultX_2 : 0);
}
 
static inline stepper_state_t xbar_stepper_state_set (stepper_state_t *state, uint8_t axis, bool b)
{
    if(b)
        state->details.b.bits |= bit(axis);
    else
        state->details.a.bits |= bit(axis);
 
    return *state;
}
 
static inline bool xbar_stepper_state_get (stepper_state_t state, uint8_t axis, bool b)
{
    return bit_istrue(b ? state.details.b.bits : state.details.a.bits, bit(axis));
}
 
void xbar_set_homing_source (void);
limit_signals_t xbar_get_homing_source (void);
limit_signals_t xbar_get_homing_source_from_cycle (axes_signals_t homing_cycle);
axes_signals_t xbar_fn_to_axismask (pin_function_t id);
const char *xbar_fn_to_pinname (pin_function_t id);
control_signals_t xbar_fn_to_signals_mask (pin_function_t id);
 
#endif