'''
ESP32 sender for BME280 with sleep

Measured values on a ESP32 WROOM development board
5V power supply at Vin, red power on board led on
11 mA   ESP Sleep (red power LED on)
40 mA   ESP ON, Wifi Off
112 mA  ESP ON  Wifi ON

Communication Method: ESPNOW

external library
ttps://github.com/robert-hh/BME280

2026-01-27 mchris
'''

import network, espnow, machine
from machine import Pin, I2C
import time, struct
from bme280_float import *
import re

peer = b'\xcc\x7b\x5c\x1e\xac\x5c'
SLEEP_TIME_MS = 6000 #300000  # 5 minutes (300 seconds * 1000)
NUM_READINGS = 5

i2c = I2C(1, scl=Pin(22), sda=Pin(21), freq=100000)
bme280 = BME280(i2c=i2c)
led = Pin(2, Pin.OUT)

sta = network.WLAN(network.WLAN.IF_STA)
sta.active(True)
sta.disconnect()
e = espnow.ESPNow()
e.active(True)
e.add_peer(peer)

led.on()
#e.send(peer, b"Starting burst...")

def parse_value(s):
    num = re.match(r'([\d.]+)', s).group(1)
    return float(num)

values = bme280.values
parsed = [parse_value(v) for v in values]
data = struct.pack('<5f', *parsed)
e.send(peer, data, True)
print('Sent:', parsed)
#time.sleep_ms(200)
led.toggle()

#led.off()
time.sleep(3)
e.active(False)
sta.active(False)

machine.deepsleep(SLEEP_TIME_MS)