ethercat-linux/scripts/serial_exec.py

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#!/usr/bin/env python3
"""Execute command on J1900 via serial console."""
import serial, time, sys
PORT = "/dev/ttyUSB0"
BAUD = 115200
def main():
if len(sys.argv) < 2:
print(f"Usage: {sys.argv[0]} <command>")
sys.exit(1)
cmd = " ".join(sys.argv[1:])
ser = serial.Serial(PORT, BAUD, timeout=0.5)
ser.reset_input_buffer()
ser.write((cmd + "\r").encode())
time.sleep(3)
out = b""
while True:
chunk = ser.read(4096)
if not chunk:
break
out += chunk
ser.close()
print(out.decode("utf-8", errors="replace"))
if __name__ == "__main__":
main()