from enum import Enum


class ModemConfig(Enum):
    Bw125Cr45Sf128 = (0x72, 0x74, 0x04)
    Bw500Cr45Sf128 = (0x92, 0x74, 0x04)
    Bw31_25Cr48Sf512 = (0x48, 0x94, 0x04)
    Bw125Cr48Sf4096 = (0x78, 0xc4, 0x0c)


FLAGS_ACK = 0x80
BROADCAST_ADDRESS = 255

REG_00_FIFO = 0x00
REG_01_OP_MODE = 0x01
REG_06_FRF_MSB = 0x06
REG_07_FRF_MID = 0x07
REG_08_FRF_LSB = 0x08
REG_0E_FIFO_TX_BASE_ADDR = 0x0e
REG_0F_FIFO_RX_BASE_ADDR = 0x0f
REG_10_FIFO_RX_CURRENT_ADDR = 0x10
REG_12_IRQ_FLAGS = 0x12
REG_13_RX_NB_BYTES = 0x13
REG_1D_MODEM_CONFIG1 = 0x1d
REG_1E_MODEM_CONFIG2 = 0x1e
REG_19_PKT_SNR_VALUE = 0x19
REG_1A_PKT_RSSI_VALUE = 0x1a
REG_20_PREAMBLE_MSB = 0x20
REG_21_PREAMBLE_LSB = 0x21
REG_22_PAYLOAD_LENGTH = 0x22
REG_26_MODEM_CONFIG3 = 0x26

REG_4D_PA_DAC = 0x4d
REG_40_DIO_MAPPING1 = 0x40
REG_0D_FIFO_ADDR_PTR = 0x0d

PA_DAC_ENABLE = 0x07
PA_DAC_DISABLE = 0x04
PA_SELECT = 0x80

CAD_DETECTED_MASK = 0x01
RX_DONE = 0x40
TX_DONE = 0x08
CAD_DONE = 0x04
CAD_DETECTED = 0x01

LONG_RANGE_MODE = 0x80
MODE_SLEEP = 0x00
MODE_STDBY = 0x01
MODE_TX = 0x03
MODE_RXCONTINUOUS = 0x05
MODE_CAD = 0x07

REG_09_PA_CONFIG = 0x09
FXOSC = 32000000.0
FSTEP = (FXOSC / 524288)
