66 lines
1.2 KiB
Python
Executable File
66 lines
1.2 KiB
Python
Executable File
#!/usr/bin/env python3
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import os
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import sys
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import time
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import mapid
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from serial.serialutil import SerialException
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mapid.load_dotenv()
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FIFO = os.environ.get("FIFO")
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def main():
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global FIFO
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if len(sys.argv) == 2:
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FIFO = sys.argv[1]
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# Write PID
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FIFO_BRIDGE_PID_FILE = os.environ.get("FIFO_BRIDGE_PID_FILE")
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f = open(FIFO_BRIDGE_PID_FILE, "w")
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f.write(os.getpid())
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f.close()
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del f
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# Create MAPIDCP object to communicate with the Arduino
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m = mapid.MAPIDCP()
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# Create FIFO
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os.mkfifo(FIFO)
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time.sleep(0.2)
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print("Created FIFO " + FIFO, file=sys.stderr)
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f = open(FIFO, "r")
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print("Opened FIFO for reading", file=sys.stderr)
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# Show greeting on screen
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m.cls()
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m.line(1)
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m.echo("fifo_bridge.py")
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m.line(2)
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m.echo(FIFO)
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# Main loop: read commands from FIFO and execute it
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keep_going = True
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while keep_going:
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try:
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line = f.readline().strip("\n")
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m._cmd(line)
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except KeyboardInterrupt:
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keep_going = False
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print()
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except SerialException:
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keep_going = False
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print("Caught a SerialException. Exiting now...", file=sys.stderr)
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# Remove FIFO and PID files
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os.remove(FIFO)
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os.remove(FIFO_BRIDGE_PID_FILE)
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print("Removed FIFO.", file=sys.stderr)
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if __name__ == "__main__":
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main()
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