#pragma once

#include <stdbool.h>
#include <stdint.h>

#ifdef __cplusplus
extern "C" {
#endif

#define CC1101_QUARTZ                   26000000

#define CC1101_TIMEOUT                  500

#define CC1101_READ                     (1<<7)  /** Read Bit */
#define CC1101_BURST                    (1<<6)  /** Burst Bit */

/* Common registers, CC1101_BURST and CC1101_WRITE behaves as expected  */
#define CC1101_IOCFG2                   0x00    /** GDO2 output pin configuration */
#define CC1101_IOCFG1                   0x01    /** GDO1 output pin configuration */
#define CC1101_IOCFG0                   0x02    /** GDO0 output pin configuration */
#define CC1101_FIFOTHR                  0x03    /** RX FIFO and TX FIFO thresholds */
#define CC1101_SYNC1                    0x04    /** Sync word, high byte */
#define CC1101_SYNC0                    0x05    /** Sync word, low byte */
#define CC1101_PKTLEN                   0x06    /** Packet length */
#define CC1101_PKTCTRL1                 0x07    /** Packet automation control */
#define CC1101_PKTCTRL0                 0x08    /** Packet automation control */
#define CC1101_ADDR                     0x09    /** Device address */
#define CC1101_CHANNR                   0x0A    /** Channel number */
#define CC1101_FSCTRL1                  0x0B    /** Frequency synthesizer control */
#define CC1101_FSCTRL0                  0x0C    /** Frequency synthesizer control */
#define CC1101_FREQ2                    0x0D    /** Frequency control word, high byte */
#define CC1101_FREQ1                    0x0E    /** Frequency control word, middle byte */
#define CC1101_FREQ0                    0x0F    /** Frequency control word, low byte */
#define CC1101_MDMCFG4                  0x10    /** Modem configuration */
#define CC1101_MDMCFG3                  0x11    /** Modem configuration */
#define CC1101_MDMCFG2                  0x12    /** Modem configuration */
#define CC1101_MDMCFG1                  0x13    /** Modem configuration */
#define CC1101_MDMCFG0                  0x14    /** Modem configuration */
#define CC1101_DEVIATN                  0x15    /** Modem deviation setting */
#define CC1101_MCSM2                    0x16    /** Main Radio Control State Machine configuration */
#define CC1101_MCSM1                    0x17    /** Main Radio Control State Machine configuration */
#define CC1101_MCSM0                    0x18    /** Main Radio Control State Machine configuration */
#define CC1101_FOCCFG                   0x19    /** Frequency Offset Compensation configuration */
#define CC1101_BSCFG                    0x1A    /** Bit Synchronization configuration */
#define CC1101_AGCTRL2                  0x1B    /** AGC control */
#define CC1101_AGCTRL1                  0x1C    /** AGC control */
#define CC1101_AGCTRL0                  0x1D    /** AGC control */
#define CC1101_WOREVT1                  0x1E    /** High byte Event 0 timeout */
#define CC1101_WOREVT0                  0x1F    /** Low byte Event 0 timeout */
#define CC1101_WORCTRL                  0x20    /** Wake On Radio control */
#define CC1101_FREND1                   0x21    /** Front end RX configuration */
#define CC1101_FREND0                   0x22    /** Front end TX configuration */
#define CC1101_FSCAL3                   0x23    /** Frequency synthesizer calibration */
#define CC1101_FSCAL2                   0x24    /** Frequency synthesizer calibration */
#define CC1101_FSCAL1                   0x25    /** Frequency synthesizer calibration */
#define CC1101_FSCAL0                   0x26    /** Frequency synthesizer calibration */
#define CC1101_RCCTRL1                  0x27    /** RC oscillator configuration */
#define CC1101_RCCTRL0                  0x28    /** RC oscillator configuration */
#define CC1101_FSTEST                   0x29    /** Frequency synthesizer calibration control */
#define CC1101_PTEST                    0x2A    /** Production test */
#define CC1101_AGCTEST                  0x2B    /** AGC test */
#define CC1101_TEST2                    0x2C    /** Various test settings */
#define CC1101_TEST1                    0x2D    /** Various test settings */
#define CC1101_TEST0                    0x2E    /** Various test settings */

/* Strobe registers, CC1101_BURST is not available, CC1101_WRITE ignored */
#define CC1101_STROBE_SRES              0x30    /** Reset chip. */
#define CC1101_STROBE_SFSTXON           0x31    /** Enable and calibrate frequency synthesizer (if MCSM0.FS_AUTOCAL=1). If in RX (with CCA): Go to a wait state where only the synthesizer is running (for quick RX / TX turnaround). */
#define CC1101_STROBE_SXOFF             0x32    /** Turn off crystal oscillator. */
#define CC1101_STROBE_SCAL              0x33    /** Calibrate frequency synthesizer and turn it off. SCAL can be strobed from IDLE mode without setting manual calibration mode (MCSM0.FS_AUTOCAL=0) */
#define CC1101_STROBE_SRX               0x34    /** Enable RX. Perform calibration first if coming from IDLE and MCSM0.FS_AUTOCAL=1. */
#define CC1101_STROBE_STX               0x35    /** In IDLE state: Enable TX. Perform calibration first if MCSM0.FS_AUTOCAL=1. If in RX state and CCA is enabled: Only go to TX if channel is clear. */
#define CC1101_STROBE_SIDLE             0x36    /** Exit RX / TX, turn off frequency synthesizer and exit Wake-On-Radio mode if applicable. */
#define CC1101_STROBE_SWOR              0x38    /** Start automatic RX polling sequence (Wake-on-Radio) as described in Section 19.5 if WORCTRL.RC_PD=0. */
/* 0x37 is unused */
#define CC1101_STROBE_SPWD              0x39    /** Enter power down mode when CSn goes high. */
#define CC1101_STROBE_SFRX              0x3A    /** Flush the RX FIFO buffer. Only issue SFRX in IDLE or RXFIFO_OVERFLOW states. */
#define CC1101_STROBE_SFTX              0x3B    /** Flush the TX FIFO buffer. Only issue SFTX in IDLE or TXFIFO_UNDERFLOW states. */
#define CC1101_STROBE_SWORRST           0x3C    /** Reset real time clock to Event1 value. */
#define CC1101_STROBE_SNOP              0x3D    /** No operation. May be used to get access to the chip status byte.*/

/* Status registers, must be accessed with CC1101_BURST, but one by one */
#define CC1101_STATUS_PARTNUM           0x30    /** Chip ID Part Number */
#define CC1101_STATUS_VERSION           0x31    /** Chip ID Version */
#define CC1101_STATUS_FREQEST           0x32    /** Frequency Offset Estimate from Demodulator */
#define CC1101_STATUS_LQI               0x33    /** Demodulator Estimate for Link Quality */
#define CC1101_STATUS_RSSI              0x34    /** Received Signal Strength Indication */
#define CC1101_STATUS_MARCSTATE         0x35    /** Main Radio Control State Machine State */
#define CC1101_STATUS_WORTIME1          0x36    /** High Byte of WOR Time */
#define CC1101_STATUS_WORTIME0          0x37    /** Low Byte of WOR Time */
#define CC1101_STATUS_PKTSTATUS         0x38    /** Current GDOx Status and Packet Status */
#define CC1101_STATUS_VCO_VC_DAC        0x39    /** Current Setting from PLL Calibration Module */
#define CC1101_STATUS_TXBYTES           0x3A    /** Underflow and Number of Bytes */
#define CC1101_STATUS_RXBYTES           0x3B    /** Overflow and Number of Bytes */
#define CC1101_STATUS_RCCTRL1_STATUS    0x3C    /** Last RC Oscillator Calibration Result */
#define CC1101_STATUS_RCCTRL0_STATUS    0x3D    /** Last RC Oscillator Calibration Result */

/* Some special registers, use CC1101_BURST to read/write data */
#define CC1101_PATABLE                  0x3E    /** PATABLE register number, an 8-byte table that defines the PA control settings */
#define CC1101_FIFO                     0x3F    /** FIFO register nunmber, can be combined with CC1101_WRITE and/or CC1101_BURST */

#define CC1101_IOCFG_INV                (1<<6)  /** IOCFG inversion */

typedef enum {
    CC1101IocfgRxFifoThreshold=0x00,
    CC1101IocfgRxFifoThresholdOrPacket=0x01,
    CC1101IocfgTxFifoThreshold=0x02,
    CC1101IocfgTxFifoFull=0x03,
    CC1101IocfgRxOverflow=0x04,
    CC1101IocfgTxUnderflow=0x05,
    CC1101IocfgSyncWord=0x06,
    CC1101IocfgPacket=0x07,
    CC1101IocfgPreamble=0x08,
    CC1101IocfgClearChannel=0x09,
    CC1101IocfgLockDetector=0x0A,
    CC1101IocfgSerialClock=0x0B,
    CC1101IocfgSerialSynchronousDataOutput=0x0C,
    CC1101IocfgSerialDataOutput=0x0D,
    CC1101IocfgCarrierSense=0x0E,
    CC1101IocfgCrcOk=0x0F,
    /* Reserved range: 0x10 - 0x15 */
    CC1101IocfgRxHardData1=0x16,
    CC1101IocfgRxHardData0=0x17,
    /* Reserved range: 0x18 - 0x1A */
    CC1101IocfgPaPd=0x1B,
    CC1101IocfgLnaPd=0x1C,
    CC1101IocfgRxSymbolTick=0x1D,
    /* Reserved range: 0x1E - 0x23 */
    CC1101IocfgWorEvnt0=0x24,
    CC1101IocfgWorEvnt1=0x25,
    CC1101IocfgClk256=0x26,
    CC1101IocfgClk32k=0x27,
    /* Reserved: 0x28 */
    CC1101IocfgChpRdyN=0x29,
    /* Reserved: 0x2A */
    CC1101IocfgXoscStable=0x2B,
    /* Reserved range: 0x2C - 0x2D */
    CC1101IocfgHighImpedance=0x2E,
    CC1101IocfgHW=0x2F,
    /* Only one CC1101IocfgClkXoscN can be selected as an output at any time */
    CC1101IocfgClkXosc1=0x30,
    CC1101IocfgClkXosc1_5=0x31,
    CC1101IocfgClkXosc2=0x32,
    CC1101IocfgClkXosc3=0x33,
    CC1101IocfgClkXosc4=0x34,
    CC1101IocfgClkXosc6=0x35,
    CC1101IocfgClkXosc8=0x36,
    CC1101IocfgClkXosc12=0x37,
    CC1101IocfgClkXosc16=0x38,
    CC1101IocfgClkXosc24=0x39,
    CC1101IocfgClkXosc32=0x3A,
    CC1101IocfgClkXosc48=0x3B,
    CC1101IocfgClkXosc64=0x3C,
    CC1101IocfgClkXosc96=0x3D,
    CC1101IocfgClkXosc128=0x3E,
    CC1101IocfgClkXosc192=0x3F,
} CC1101Iocfg;

typedef enum {
    CC1101StateIDLE=0b000,              /** IDLE state */
    CC1101StateRX=0b001,                /** Receive mode */
    CC1101StateTX=0b010,                /** Transmit mode */
    CC1101StateFSTXON=0b011,            /** Fast TX ready */
    CC1101StateCALIBRATE=0b100,         /** Frequency synthesizer calibration is running */
    CC1101StateSETTLING=0b101,          /** PLL is settling */
    CC1101StateRXFIFO_OVERFLOW=0b110,   /** RX FIFO has overflowed. Read out any useful data, then flush the FIFO with SFRX */
    CC1101StateTXFIFO_UNDERFLOW=0b111,  /** TX FIFO has underflowed. Acknowledge with SFTX */
} CC1101State;

typedef struct {
    uint8_t FIFO_BYTES_AVAILABLE:4;
    CC1101State STATE:3;
    bool CHIP_RDYn:1;
} CC1101Status;

typedef union {
    CC1101Status status;
    uint8_t status_raw;
} CC1101StatusRaw;


typedef struct {
    uint8_t NUM_TXBYTES:7;
    bool TXFIFO_UNDERFLOW:1;
} CC1101TxBytes;

typedef struct {
    uint8_t NUM_RXBYTES:7;
    bool RXFIFO_OVERFLOW:1;
} CC1101RxBytes;

#ifdef __cplusplus
}
#endif