#pragma once

#include <stdint.h>

namespace can_space {

enum MBOX_NUMBERS {
    MODBUS_SETTINGS_MBOX = 0,
    COMM_VERSION_MBOX = 1,
    MODBUS_DATA_COMM_TO_CPU_RSV2_MBOX = 26,
    MODBUS_DATA_COMM_TO_CPU_RSV1_MBOX = 27,
    MODBUS_DATA_CPU_TO_COMM_MBOX = 28,
    MODBUS_DATA_COMM_TO_CPU_MBOX = 29,
    DIGITAL_INPUT_MBOX = 30,
    DIGITAL_OUTPUT_MBOX = 31
};


enum CAN_VARIANT{
    CANA,
    CANB
};

enum configFlags{
    NONE = 0,
    MSB_ENABLE = 1u << 0,
    STM_ENABLE = 1u << 1
};


enum configSystemIsrFlags{
    I0EN_ENABLE = 1ul,
    I1EN_ENABLE = 1ul << 1,
    GIL_ENABLE = 1ul << 2,
    WLIM_ENABLE = 1ul << 8,
    EPIM_ENABLE = 1ul << 9,
    BOIM_ENABLE = 1ul << 10,
    RMLIM_ENABLE = 1ul << 11,
    WUIM_ENABLE = 1ul << 12,
    WDIM_ENABLE = 1ul << 13,
    AAIM_ENABLE = 1ul << 14,
    TCOM_ENABLE = 1ul << 16,
    MTOM_ENABLE = 1ul << 17
};


// eCAN Message Control Register (MSGCTRL) bit definitions
struct MsgCtrlBits {     // bits  description
    uint16_t      DLC:4;             // 0:3
    uint16_t      RTR:1;             // 4
    uint16_t      OPC:1;             // 1
    uint16_t      rsvd1:2;           // 7:6   reserved
    uint16_t      TPL:5;             // 12:8
    uint16_t      rsvd2:3;           // 15:13 reserved
};


union MsgCtrlReg {
    uint16_t              all;
    struct MsgCtrlBits  bit;

    MsgCtrlReg(uint16_t configData = 0){
        all = configData;
    }
};


struct MsgID_Bits {         // bits  description
    uint16_t      EXTMSGID_L:16;  // 0:15
    uint16_t      EXTMSGID_H:2;   // 16:17
    uint16_t      STDMSGID:11;    // 18:28
    uint16_t      AAM:1;          // 29
    uint16_t      AME:1;          // 30
    uint16_t      IDE:1;          // 31
};

// Allow access to the bit fields or entire register
union MsgID {
    uint32_t              all;
    struct MsgID_Bits   bit;

    MsgID(uint32_t boxID = 0xAAA, bool isExtendedID = false, bool isAAM = false, bool isAME = false) {   
        if(!isExtendedID){
            bit.STDMSGID = boxID;
            bit.EXTMSGID_H = 0;
            bit.EXTMSGID_L = 0;
        }
        else{ all = boxID; }

        bit.IDE = isExtendedID;
        bit.AAM = isAAM;
        bit.AME = isAME;
    }

    MsgID(const MsgID& init) {   
        all = init.all;
    }
};


struct CANMessage {
    uint16_t dataLength;
    union CANMDL_REG mdl;
    union CANMDH_REG mdh;

    CANMessage(){
        mdl.all = 0;
        mdh.all = 0;
    }
};


}