'''
ESP32 sender for BME280

Communication Method: ESPNOW

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

2026-01-26 mchris
'''

peer = b'\xcc\x7b\x5c\x1e\xac\x5c'   # MAC address of receiver ESP32


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

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

led = Pin(2, Pin.OUT) # ESP32WROOM Pin2
led.on()
# A WLAN interface must be active to send()/recv()
sta = network.WLAN(network.WLAN.IF_STA)  # Or network.WLAN.IF_AP
sta.active(True)
sta.disconnect()  # Reset any prior connections

e = espnow.ESPNow()
e.active(True)

e.add_peer(peer)      # Must add_peer() before send()

e.send(peer, "Starting...")
led.on()

def parse_value(s):
    # Extract number before °C/%/hPa etc.
    num = re.match(r'([\d.]+)', s).group(1)
    return float(num)

while True:
    for i in range(100):
        values=bme280.values
        parsed = [parse_value(v) for v in values]  # [100.0, 10.0, 1013.0, 23.4, 45.0]
        data = struct.pack('<5f', *parsed)        
        e.send(peer, data,True)
        print('Sent:', parsed)
        time.sleep_ms(200)
        led.toggle()

e.send(peer, b'end')
led.off()