119 lines
2.5 KiB
Python
119 lines
2.5 KiB
Python
from fastapi import FastAPI, HTTPException
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import subprocess
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import threading
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import time
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import RPi.GPIO as GPIO
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app = FastAPI()
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# -------------------------
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# GPIO SETUP
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# -------------------------
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STEP = 23
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DIR = 24
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EN = 25
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GPIO.setmode(GPIO.BCM)
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GPIO.setup(STEP, GPIO.OUT)
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GPIO.setup(DIR, GPIO.OUT)
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GPIO.setup(EN, GPIO.OUT)
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GPIO.output(EN, GPIO.LOW)
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motor_running = False
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motor_thread = None
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def step_motor(steps, direction, delay=0.001):
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GPIO.output(DIR, direction)
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for _ in range(steps):
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GPIO.output(STEP, GPIO.HIGH)
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time.sleep(delay)
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GPIO.output(STEP, GPIO.LOW)
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time.sleep(delay)
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def motor_loop():
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global motor_running
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while True:
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if not motor_running:
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time.sleep(0.1)
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continue
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step_motor(200, GPIO.HIGH, 0.001)
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time.sleep(1)
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step_motor(200, GPIO.LOW, 0.001)
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time.sleep(1)
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# -------------------------
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# SAFE COMMAND WHITELIST
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# -------------------------
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COMMANDS = {
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"restart_nginx": ["sudo", "systemctl", "restart", "nginx"],
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"uptime": ["uptime"],
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"update": ["sudo", "apt", "update"]
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}
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# -------------------------
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# API ENDPOINTS
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# -------------------------
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motor_thread = threading.Thread(target=motor_loop, daemon=True)
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motor_thread.start()
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print("Motor thread initialized")
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@app.post("/run")
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def run_task(task: str, token: str):
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if token != "MY_SECRET_TOKEN":
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raise HTTPException(status_code=403, detail="Unauthorized")
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if task not in COMMANDS:
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raise HTTPException(status_code=400, detail="Invalid task")
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try:
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result = subprocess.check_output(COMMANDS[task], text=True)
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return {"output": result}
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except subprocess.CalledProcessError as e:
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return {"error": e.output}
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@app.post("/motor/start")
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def start_motor(token: str):
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global motor_running, motor_thread
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if token != "MY_SECRET_TOKEN":
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raise HTTPException(status_code=403, detail="Unauthorized")
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if motor_running:
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return {"status": "already running"}
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motor_running = True
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GPIO.output(EN, GPIO.LOW) # disable driver
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return {"status": "motor started"}
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@app.post("/motor/stop")
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def stop_motor(token: str):
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global motor_running
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if token != "MY_SECRET_TOKEN":
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raise HTTPException(status_code=403, detail="Unauthorized")
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motor_running = False
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GPIO.output(EN, GPIO.HIGH) # disable driver
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return {"status": "motor stopped"}
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@app.on_event("shutdown")
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def shutdown():
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global motor_running
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motor_running = False
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GPIO.output(EN, GPIO.HIGH)
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GPIO.cleanup() |