#!/usr/bin/env python
# -*- coding: utf-8 -*-
"""
ble_temp_watch.py - poll the device "devinfo" CLI command over the read/write
characteristic every 2s and print chip temperature + raw ADC/trim values.

    usage:  .venv-ble/Scripts/python ble_temp_watch.py

Use it to verify the TS reading: warm the chip with a finger and watch the
adc value rise / temperature change. Ctrl+C to stop.
"""

import asyncio
import re
import time

from bleak import BleakClient

from ble_cli_test import CLI_RW_UUID, find_device

POLL_S = 2.0
TEMP_RE = re.compile(r"chip temp: (\S+) C \(adc=(\d+) trim=(\d+)\)")


async def main():
    dev = await find_device()
    print("connecting %s (%s) ..." % (dev.name, dev.address))
    async with BleakClient(dev) as client:
        print("connected, mtu=%d - polling devinfo every %.0fs, Ctrl+C to stop"
              % (client.mtu_size, POLL_S))
        print("time      temp      adc   trim")
        while True:
            await client.write_gatt_char(CLI_RW_UUID, b"devinfo", response=True)
            await asyncio.sleep(0.1)
            rsp = (await client.read_gatt_char(CLI_RW_UUID)).decode("ascii", "replace")
            m = TEMP_RE.search(rsp)
            if m:
                print("%s  %-7s  %-5s  %s"
                      % (time.strftime("%H:%M:%S"), m.group(1), m.group(2), m.group(3)))
            else:
                print("%s  (parse failed) %r" % (time.strftime("%H:%M:%S"), rsp[:80]))
            await asyncio.sleep(POLL_S)


if __name__ == "__main__":
    try:
        asyncio.run(main())
    except KeyboardInterrupt:
        pass