ffb_defs.h

Go to the documentation of this file.

/*
 * ffb_defs.h
 *
 *  Created on: Feb 9, 2020
 *      Author: Yannick
 */
 
#ifndef FFB_DEFS_H_
#define FFB_DEFS_H_
 
#include "cppmain.h"
#include "Filters.h"
#include "constants.h" // For #define MAX_AXIS
#define FFB_ID_OFFSET 0x00
#define MAX_EFFECTS 40
 
// HID Descriptor definitions - Axes
#define HID_USAGE_X     0x30
#define HID_USAGE_Y     0x31
#define HID_USAGE_Z     0x32
#define HID_USAGE_RX    0x33
#define HID_USAGE_RY    0x34
#define HID_USAGE_RZ    0x35
#define HID_USAGE_SL0   0x36
#define HID_USAGE_SL1   0x37
#define HID_USAGE_WHL   0x38
#define HID_USAGE_POV   0x39
 
// HID Descriptor definitions - FFB Effects
#define HID_USAGE_CONST 0x26    //    Usage ET Constant Force
#define HID_USAGE_RAMP  0x27    //    Usage ET Ramp
#define HID_USAGE_SQUR  0x30    //    Usage ET Square
#define HID_USAGE_SINE  0x31    //    Usage ET Sine
#define HID_USAGE_TRNG  0x32    //    Usage ET Triangle
#define HID_USAGE_STUP  0x33    //    Usage ET Sawtooth Up
#define HID_USAGE_STDN  0x34    //    Usage ET Sawtooth Down
#define HID_USAGE_SPRNG 0x40    //    Usage ET Spring
#define HID_USAGE_DMPR  0x41    //    Usage ET Damper
#define HID_USAGE_INRT  0x42    //    Usage ET Inertia
#define HID_USAGE_FRIC  0x43    //    Usage ET Friction
 
 
// HID Descriptor definitions - FFB Report IDs
#define HID_ID_STATE    0x02    // Usage PID State report
 
#define HID_ID_EFFREP   0x01    // Usage Set Effect Report
#define HID_ID_ENVREP   0x02    // Usage Set Envelope Report
#define HID_ID_CONDREP  0x03    // Usage Set Condition Report
#define HID_ID_PRIDREP  0x04    // Usage Set Periodic Report
#define HID_ID_CONSTREP 0x05    // Usage Set Constant Force Report
#define HID_ID_RAMPREP  0x06    // Usage Set Ramp Force Report
#define HID_ID_CSTMREP  0x07    // Usage Custom Force Data Report
#define HID_ID_SMPLREP  0x08    // Usage Download Force Sample
#define HID_ID_EFOPREP  0x0A    // Usage Effect Operation Report
#define HID_ID_BLKFRREP 0x0B    // Usage PID Block Free Report
#define HID_ID_CTRLREP  0x0C    // Usage PID Device Control
#define HID_ID_GAINREP  0x0D    // Usage Device Gain Report
#define HID_ID_SETCREP  0x0E    // Usage Set Custom Force Report
// Features
#define HID_ID_NEWEFREP 0x11    // Usage Create New Effect Report
#define HID_ID_BLKLDREP 0x12    // Usage Block Load Report
#define HID_ID_POOLREP  0x13    // Usage PID Pool Report
 
// Control
#define HID_ID_CUSTOMCMD 0xAF   // Custom cmd (old. reserved)
#define HID_ID_HIDCMD    0xA1   // HID cmd
#define HID_ID_STRCMD    0xAC   // HID cmd as string. reserved
//#define HID_ID_CUSTOMCMD_IN 0xA2   // Custom cmd in. reserved
//#define HID_ID_CUSTOMCMD_OUT 0xA1   // Custom cmd out. reserved
 
 
#define FFB_EFFECT_NONE         0x00
#define FFB_EFFECT_CONSTANT     0x01
#define FFB_EFFECT_RAMP         0x02
#define FFB_EFFECT_SQUARE       0x03
#define FFB_EFFECT_SINE         0x04
#define FFB_EFFECT_TRIANGLE     0x05
#define FFB_EFFECT_SAWTOOTHUP   0x06
#define FFB_EFFECT_SAWTOOTHDOWN 0x07
#define FFB_EFFECT_SPRING       0x08
#define FFB_EFFECT_DAMPER       0x09
#define FFB_EFFECT_INERTIA      0x0A
#define FFB_EFFECT_FRICTION     0x0B
#define FFB_EFFECT_CUSTOM       0x0C
 
#define HID_ACTUATOR_POWER      0x08
#define HID_SAFETY_SWITCH       0x04
#define HID_ENABLE_ACTUATORS    0x02
#define HID_EFFECT_PAUSE        0x01
#define HID_ENABLE_ACTUATORS_MASK 0xFD
#define HID_EFFECT_PLAYING      0x10
 
#define HID_DIRECTION_ENABLE 0x04
#define FFB_EFFECT_DURATION_INFINITE 0xffff
 
// Only include these for cpp
#ifdef __cplusplus
 
// HID gamepad report
 
 
struct  __attribute__((__packed__)) reportHID_t {
        uint8_t id = 1;
        uint64_t buttons = 0;
        int16_t X = 0;
        int16_t Y = 0;
        int16_t Z = 0;
        int16_t RX = 0;
        int16_t RY = 0;
        int16_t RZ = 0;
        int16_t Dial = 0;
        int16_t Slider = 0;
};
 
/*
 * Helper function to access analog axes in packed HID report struct
 */
inline void setHidReportAxis(reportHID_t *report, uint8_t idx, int16_t val){
    switch(idx){
    case 0:
        report->X = val;
        break;
    case 1:
        report->Y = val;
        break;
    case 2:
        report->Z = val;
        break;
    case 3:
        report->RX = val;
        break;
    case 4:
        report->RY = val;
        break;
    case 5:
        report->RZ = val;
        break;
    case 6:
        report->Dial = val;
        break;
    case 7:
        report->Slider = val;
        break;
    default:
        return;
    }
}
 
typedef struct
{
    const uint8_t   reportId = HID_ID_STATE+FFB_ID_OFFSET;
    //uint8_t   effectBlockIndex = 1;   //EffectId
    uint8_t status = (HID_ACTUATOR_POWER) | (HID_ENABLE_ACTUATORS);   // Bits: 0=Device Paused,1=Actuators Enabled,2=Safety Switch,3=Actuator Power, 4=Effect Playing
 
} __attribute__((packed)) reportFFB_status_t;
 
 
 
typedef struct
    {
    uint8_t     reportId = 1;
    uint8_t     effectBlockIndex = 0;   // 1..max_effects
    uint8_t     effectType = 0;
    uint16_t    duration = 0; // 0..32767 ms
    uint16_t    triggerRepeatInterval = 0; // 0..32767 ms
    uint16_t    samplePeriod = 0;   // 0..32767 ms
    uint16_t    startDelay = 0;   // 0..32767 ms
    uint8_t     gain = 255; // 0..255 scaler
    uint8_t     triggerButton = 0; // button ID. unused
    uint8_t     enableAxis = 0; // bits: 0=X, 1=Y, 2=DirectionEnable
    uint16_t    directionX = 0;   // angle (0=0 .. 36000=360deg)
    uint16_t    directionY = 0;   // angle (0=0 .. 36000=360deg) TODO axes are last bytes in struct if fewer axes are used. use different report if this is not enough anymore!
//#if MAX_AXIS == 3
//  uint8_t directionZ = 0; // angle (0=0 .. 255=360deg)
//#endif
    //  uint16_t    typeSpecificBlockOffsetX = 0; // Needed?
    //  uint16_t    typeSpecificBlockOffsetY = 0;
//  uint16_t    startDelay; // 0..32767 ms
} __attribute__((packed)) FFB_SetEffect_t;
 
typedef struct
    {
    uint8_t     reportId;
    uint8_t     effectBlockIndex;   // 1..max_effects
    uint8_t     parameterBlockOffset;   // bits: 0..3=parameterBlockOffset, 4..5=instance1, 6..7=instance2
    int16_t     cpOffset;   // Center
    int16_t     positiveCoefficient; // Scaler for positive range
    int16_t     negativeCoefficient;
    uint16_t    positiveSaturation;   // Clipping point for positive range
    uint16_t    negativeSaturation;
    uint16_t    deadBand;
} __attribute__((packed)) FFB_SetCondition_Data_t;
 
 
typedef struct
    {
    //uint8_t       reportId; // ID removed by tinyusb
    uint8_t effectType; // Effect type ID
    uint16_t    byteCount; // Size of custom effects
} __attribute__((packed)) FFB_CreateNewEffect_Feature_Data_t;
 
// Feature GET report
typedef struct
    {
    //uint8_t   reportId = HID_ID_BLKLDREP; // No report ID for tinyusb feature GET
    uint8_t effectBlockIndex;   // 1..max_effects
    uint8_t loadStatus;   // 1=Success,2=Full,3=Error
    uint16_t    ramPoolAvailable;
} __attribute__((packed)) FFB_BlockLoad_Feature_Data_t;
 
typedef struct
    {
    //uint8_t   reportId = HID_ID_POOLREP; // No report ID for tinyusb feature GET
    uint16_t    ramPoolSize = MAX_EFFECTS;
    uint8_t     maxSimultaneousEffects = MAX_EFFECTS;
    uint8_t     memoryManagement = 1;   // 0=DeviceManagedPool (0/1), 1=SharedParameterBlocks (0/1)
} __attribute__((packed)) FFB_PIDPool_Feature_Data_t;
 
 
typedef struct
    {
    uint8_t reportId;
    uint8_t effectBlockIndex;
    uint16_t magnitude;
    int16_t offset;
    uint16_t    phase; // degrees
    uint32_t    period;   // 0..32767 ms
} __attribute__((packed)) FFB_SetPeriodic_Data_t;
 
typedef struct
{
    uint8_t reportId;
    uint8_t effectBlockIndex;
    uint16_t attackLevel;
    uint16_t fadeLevel;
    uint32_t attackTime;
    uint32_t fadeTime;
} __attribute__((packed)) FFB_SetEnvelope_Data_t;
 
typedef struct
{
    uint8_t reportId;
    uint8_t effectBlockIndex;
    uint16_t startLevel;
    uint16_t endLevel;
} __attribute__((packed)) FFB_SetRamp_Data_t;
 
typedef struct
{
    int16_t cpOffset = 0; // Center point
    int16_t positiveCoefficient = 0;
    int16_t negativeCoefficient = 0;
    uint16_t positiveSaturation = 0;
    uint16_t negativeSaturation = 0;
    uint16_t deadBand = 0;
 
    bool isActive(){ // Condition is active if either coefficient is not zero
        return (positiveCoefficient != 0 && positiveSaturation != 0) || (negativeCoefficient != 0 && negativeSaturation != 0);
    }
} FFB_Effect_Condition;
 
typedef struct
{
    uint8_t reportId;
    uint8_t effectBlockIndex;
    uint8_t state;
    uint8_t loopCount;
} __attribute__((packed)) FFB_EffOp_Data_t;
 
// Internal struct for storing effects
typedef struct
{
    volatile uint8_t state = 0;
    uint8_t type = FFB_EFFECT_NONE; // Type
    int16_t offset = 0;               // Center point
    uint8_t gain = 255;             // Scaler. often unused
    int16_t magnitude = 0;         // High res intensity of effect
    int16_t startLevel = 0;           // Ramp effect
    int16_t endLevel = 0;           // Ramp effect
    float axisMagnitudes[MAX_AXIS] = {0}; // 0=0,100%=1
 
    FFB_Effect_Condition conditions[MAX_AXIS];
    int16_t phase = 0;
    uint16_t period = 0;
    uint32_t duration = FFB_EFFECT_DURATION_INFINITE;                    // Duration in ms
    uint16_t attackLevel = 0, fadeLevel = 0; // Envelope effect
    uint32_t attackTime = 0, fadeTime = 0;     // Envelope effect
 
    std::unique_ptr<Biquad> filter[MAX_AXIS] = { nullptr };  // Optional filter
    uint16_t startDelay = 0;
    uint32_t startTime = 0;      // Elapsed time in ms before effect starts
    uint16_t samplePeriod = 0;
    bool useEnvelope = false;
    bool useSingleCondition = true;
} FFB_Effect;
 
 
 
// --------------- Effects------------------------
typedef struct
    {
    uint8_t reportId;
    uint8_t effectBlockIndex;   // 1..max_effects
    int16_t magnitude; // High res intensity
} __attribute__((packed)) FFB_SetConstantForce_Data_t;
 
#endif //c++
 
#endif /* FFB_DEFS_H_ */