matthieu
fce468cf76
- Add FastAPI service exposing /health, /last, /send/esclave, /send/dsd, /send/custom - Implement SerialBridge aligned with legacy Tkinter behavior (open delay 2s, post-write 0.5s, read in_waiting once) - Enforce single in-flight serial request (non-blocking lock, returns 409 BUSY) - Add environment-based serial configuration (.env + systemd EnvironmentFile) - Document installation, systemd service, and Tailscale usage (direct IP and tailscale serve)
84 lines
2.0 KiB
Python
84 lines
2.0 KiB
Python
import os
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import time
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import socket
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from fastapi import FastAPI, HTTPException
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from pydantic import BaseModel
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from .serial_bridge import SerialBridge, SerialConfig
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app = FastAPI(title="Pont bascule API", version="1.3")
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TRAME_ESCLAVE = b"\x01\x0D\x0A"
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TRAME_DSD = b"\x01\x10\x39\x39\x4D\x0D\x0A"
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def env(name: str, default: str) -> str:
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return os.getenv(name, default)
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def hex2b(s: str) -> bytes:
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s = s.strip().replace("0x", "").replace(",", " ")
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parts = [p for p in s.split() if p]
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return bytes(int(p, 16) for p in parts)
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cfg = SerialConfig(
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port=env("SERIAL_PORT", "/dev/ttyUSB0"),
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baudrate=int(env("SERIAL_BAUDRATE", "9600")),
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timeout_s=float(env("SERIAL_TIMEOUT_S", "1.0")),
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open_delay_s=float(env("SERIAL_OPEN_DELAY_S", "2.0")), # ✅ comme Tkinter
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post_write_delay_s=float(env("SERIAL_POST_WRITE_DELAY_S", "0.5")), # ✅
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)
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bridge = SerialBridge(cfg)
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class CustomReq(BaseModel):
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hex: str
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@app.get("/health")
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def health():
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return {
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"ok": True,
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"mode": "serial",
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"busy": bridge.busy(),
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"hostname": socket.gethostname(),
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"timestamp": time.time(),
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"port": cfg.port,
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"baudrate": cfg.baudrate,
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}
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@app.get("/last")
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def last():
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return bridge.last()
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@app.post("/send/esclave")
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def send_esclave():
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res = bridge.send_and_read_once(TRAME_ESCLAVE)
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if res.get("busy"):
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raise HTTPException(status_code=409, detail=res["error"])
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return res
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@app.post("/send/dsd")
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def send_dsd():
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res = bridge.send_and_read_once(TRAME_DSD)
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if res.get("busy"):
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raise HTTPException(status_code=409, detail=res["error"])
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return res
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@app.post("/send/custom")
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def send_custom(req: CustomReq):
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try:
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payload = hex2b(req.hex)
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except Exception as e:
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raise HTTPException(status_code=400, detail=f"Invalid hex: {e}")
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res = bridge.send_and_read_once(payload)
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if res.get("busy"):
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raise HTTPException(status_code=409, detail=res["error"])
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return res
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