# CircuitPython Demo - USB/Serial echo

import board
import busio
import digitalio
import time
led = digitalio.DigitalInOut(board.D13)
led.direction = digitalio.Direction.OUTPUT

uart = busio.UART(board.TX, board.RX, baudrate=9600,timeout=0)


c=0
seq = []
seq_string=""
count=0
for x in range(0,3):
    print("Boot...")
    led.value=True
    time.sleep(0.5)
    led.value=False
    time.sleep(0.5)


while True:
    led.value = True
    c = uart.read(1)
    #if (c!=None):
    if ( c != b'' and c !=None ):
       #print(str(c))
       #print("c="+str(c))
       #print("char="+chr(c[0]))
       seq.append(chr(c[0])) #convert from ANSII
       if c == b'\n':
           data_string=''.join(seq).strip()
           print("Line " + str(count) + ': ' + data_string)
           seq = []
           joined_seq=""
           seq_string=""
           count=count+1
    #time.sleep(1)
    led.value = False
    #time.sleep(1)