#ifndef MAPPINGS_H
#define MAPPINGS_H

#define SN_FRONT
//#define SN_REAR

#include <stdint.h>

typedef struct {
    uint8_t en;
    uint16_t can_id;
    uint8_t start_bit;
    char name[16];
    float scale_factor; // (phys_max/can_scale)/adc_quants
} adc_ch_tx_cfg_t;

static adc_ch_tx_cfg_t CAN_TX_MAP[16] = {
/* 0 */ {.en = 1, .can_id = 0xD1, .start_bit = 16, .name = "SAS"     , .scale_factor = ((6.5535/0.0001)/(2^12)) },
/* 1 */ {.en = 1, .can_id = 0xD2, .start_bit =  0, .name = "APPS1"   , .scale_factor = ((6.5535/0.0001)/(2^12)) },
/* 2 */ {.en = 0, .can_id = 0x00, .start_bit =  0, .name = "_unused_", .scale_factor = 0 },
/* 3 */ {.en = 0, .can_id = 0x00, .start_bit =  0, .name = "_unused_", .scale_factor = 0 },
/* 4 */ {.en = 0, .can_id = 0x00, .start_bit =  0, .name = "_unused_", .scale_factor = 0 },
/* 5 */ {.en = 0, .can_id = 0x00, .start_bit =  0, .name = "_unused_", .scale_factor = 0 },
/* 6 */ {.en = 0, .can_id = 0x00, .start_bit =  0, .name = "_unused_", .scale_factor = 0 },
/* 7 */ {.en = 0, .can_id = 0x00, .start_bit =  0, .name = "_unused_", .scale_factor = 0 },
/* 8 */ {.en = 1, .can_id = 0xD2, .start_bit = 16, .name = "APPS2"   , .scale_factor = ((6.5535/0.0001)/(2^12)) },
/* 9 */ {.en = 1, .can_id = 0xD3, .start_bit =  0, .name = "DS FL"   , .scale_factor = ((6.5535/0.0001)/(2^12)) },
/* A */ {.en = 1, .can_id = 0xD1, .start_bit =  0, .name = "BPS F"   , .scale_factor = ((6.5535/0.0001)/(2^12)) },
/* ... */
};

typedef enum {
    L1 = 0,
    L2 = 1,
    L3 = 2,
    L4 = 3,
    L5 = 4,
    L6 = 5,
    L7 = 6,
    L8 = 7,
    R9 = 8,
    RA = 9,
    RB = 10,
    RC = 11,
    RD = 12,
    RE = 13,
    RF = 14,
    R0 = 15,
} analog_pin_t;

typedef enum {
    L9 = 0,
    LA = 1,
    LC = 2,
    R5 = 3,
    R6 = 4,
    R7 = 5,
} digital_pin_t;

typedef enum {
    LB = 0,
    R8 = 1,
} freq_pin_t;

typedef enum {
    NONE = 0,   // Not used
    AIN = 1,    // Analog in
    DIN = 2,    // Digital in
    FIN = 3,    // Frequency in
    DOUT = 4,   // Digital out
    POUT = 5,   // PWM out
} signal_type_t;

typedef struct {
    signal_type_t type;

    // CAN INFO
    uint8_t start;      // start byte
    uint8_t length;     // in bytes
    
    // PERIPHERY INFO
    uint8_t channel;    // ADC or PWM or Freq channel
    uint8_t dio_map[8]; // Up to 8 bits mappable to DIOs

    // METADATA
    //float scale_factor; // (phys_max/can_scale)/adc_quants
    char name[16];
} can_signal_t;

typedef struct {
    uint16_t can_id;
    uint8_t dlc;
    uint8_t num_signals;
    can_signal_t signals[8];
} can_pkt_t;

#ifdef SN_FRONT

static can_pkt_t CAN_SIGNAL_MAP[4] {
    {
        .can_id = 0x0D1, .dlc = 5, .num_signals = 2, .signals = {
            { .type = AIN, .start = 0, .length = 2, .channel = RB, .name = "BPS F" },
            { .type = AIN, .start = 2, .length = 2, .channel = L1, .name = "SAS" },
            { .type = DIN, .start = 4, .length = 1, .dio_map = {L9, LC, R5, R6, R7}, .name = "SAS" }
        }
    },
    {
        .can_id = 0x0D2, .dlc = 4, .num_signals = 2, .signals = {
            { .type = AIN, .start = 0, .length = 2, .channel = R9, .name = "APPS 1" },
            { .type = AIN, .start = 2, .length = 2, .channel = L2, .name = "APPS 2" }
        }
    },
    {
        .can_id = 0x0D3, .dlc = 8, .num_signals = 4, .signals = {
            { .type = AIN, .start = 0, .length = 2, .channel = RA, .name = "DS FL" },
            { .type = AIN, .start = 2, .length = 2, .channel = RC, .name = "DS FR" },
            { .type = AIN, .start = 4, .length = 2, .channel = RE, .name = "SLS FL" },
            { .type = AIN, .start = 6, .length = 2, .channel = R0, .name = "SLS FR" }
        }
    },
    {
        .can_id = 0x0D4, .dlc = 8, .num_signals = 4, .signals = {
            { .type = AIN, .start = 0, .length = 2, .channel = RD, .name = "BDTS FL" },
            { .type = AIN, .start = 2, .length = 2, .channel = RF, .name = "BDTS FR" },
            { .type = FIN, .start = 4, .length = 2, .channel = LB, .name = "WSS FL" },
            { .type = FIN, .start = 6, .length = 2, .channel = R8, .name = "WSS FR" }
        }
    }
};

#endif

#endif