FIFO name now declared in dotenv

.env

@@ -1,5 +1,11 @@
+# Serial device
 SERIAL_DEV="/dev/cu.usbserial-A700e0gN"
 #SERIAL_DEV="/dev/ttyUSB0"
+
+# Serial baud rate
 SERIAL_SPEED=9600
 #SERIAL_SPEED=19200
 #SERIAL_SPEED=115200
+
+# FIFO filename
+FIFO="/tmp/mapid"

fifo_bridge.py

@@ -7,7 +7,8 @@ import mapid
 from serial.serialutil import SerialException
 
 
-FIFO = "/tmp/mapid"
+mapid.load_dotenv()
+FIFO = return os.environ.get("FIFO")
 
 
 def main():