I am reading serial data like this:
connected = False
port = 'COM4'
baud = 9600
ser = serial.Serial(port, baud, timeout=0)
while not connected:
#serin = ser.read()
connected = True
while True:
print("test")
reading = ser.readline().decode()
The problem is that it prevents anything else from executing including bottle py web framework. Adding sleep() won't help.
Changing "while True"" to "while ser.readline():" doesn't print "test", which is strange since it worked in Python 2.7. Any ideas what could be wrong?
Ideally I should be able to read serial data only when it's available. Data is being sent every 1,000 ms.
Put it in a separate thread, for example:
import threading
import serial
connected = False
port = 'COM4'
baud = 9600
serial_port = serial.Serial(port, baud, timeout=0)
def handle_data(data):
print(data)
def read_from_port(ser):
while not connected:
#serin = ser.read()
connected = True
while True:
print("test")
reading = ser.readline().decode()
handle_data(reading)
thread = threading.Thread(target=read_from_port, args=(serial_port,))
thread.start()