import serial, subprocess, time

import busio
from digitalio import DigitalInOut, Direction, Pull
import board
#import adafruit_rfm69
import adafruit_rfm9x

CS = DigitalInOut(board.CE1)
RESET = DigitalInOut(board.D25)
spi = busio.SPI(board.SCK, MOSI=board.MOSI, MISO=board.MISO)
#rfm = adafruit_rfm69.RFM69(spi, CS, RESET, 868.0)
rfm = adafruit_rfm9x.RFM9x(spi, CS, RESET, 868.0, baudrate=20000000)

addr = '/tmp/rfmtty'
addr_client = '/tmp/rfmtty_client'
baudrate = 115200

cmd=['/usr/bin/socat','-d','-d','PTY,link=%s,rawer,baud=%d' %(addr, baudrate), 'PTY,link=%s,rawer,baud=%d' %(addr_client, baudrate)]
socat_proc = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
time.sleep(1)

ser = serial.Serial(addr, baudrate=baudrate)

packet_len = 120
while True:
    packet = None
    packet = rfm.receive()
    ser_data = bytearray()
    while ser.inWaiting() > 0 and len(ser_data) <= packet_len:
        recieved_byte = ser.read(1)
        ser_data += recieved_byte
    if ser_data == b'':
        pass
    else:
        print(f'Received serial data: {ser_data}')
        rfm.send(ser_data)
    if packet is None:
        pass
    else:
        print(f'Received lora data: {packet}')
        print(f'RSSI: {rfm.last_rssi} SNR: {rfm.last_snr}')
        ser.write(packet)

socat_proc.kill()