"""

"""
from machine import Pin, I2C
from machine import Timer
import utime
import sys
from bmp280 import BMP280

INTERVAL = 1000  # millisecond
BMP_addr = 0x76  # 預設位址 0x76
oled_width = 128
oled_height = 64

if(sys.platform=="esp8266"):
  led_pin = 2 # GPIO2(D4)
  I2C_SDA =4 # GPIO4(D2)
  I2C_SCL =5 # GIPO5(D1)
  i2c = I2C(scl=Pin(I2C_SCL), sda=Pin(I2C_SDA), freq=100000)     #initializing the I2C method for ESP8266
  button_pin = 16 # GPIO16(D0)
elif(sys.platform=="esp32"):
  led_pin = 2
  I2C_SDA =21 # GPIO21(I2C SDA)
  I2C_SCL =22 # GPIO22(I2C SCL)
  i2c = I2C(0, scl=Pin(I2C_SCL), sda=Pin(I2C_SDA), freq=100000)     #initializing the I2C method for ESP32
  button_pin = 35
elif(sys.platform=="rp2"):
  led_pin = "LED"
  I2C_SDA =16 # GPIO16(I2C SDA)
  I2C_SCL =17 # GPIO17(I2C SCL)
  i2c = I2C(0, scl=Pin(I2C_SCL), sda=Pin(I2C_SDA), freq=100000)     #initializing the I2C method for pi Pico
  button_pin = 21

# Start Function
if __name__ == "__main__":
  print("Hello, " + sys.platform + "!")

  # Define GPIO pins for LED and push button
  led1 = Pin(led_pin, Pin.OUT)  # Initialize LED

  # FORCEER een scan om te kijken of de bus leeft
  devices = i2c.scan()  # I2C scanning
  if len(devices) != 0:
    print(f"找到 I2C 設備，位址: {[hex(d) for d in devices]}")
    if devices.count(BMP_addr) > 0:
      print(f"BMP280 found at I2C address {BMP_addr:#x}")
    else:
      raise OSError(f"BMP280 not found at I2C address {BMP_addr:#x}")
  else:
    raise OSError("No device found")

  try:
    # 建立 BMP280 物件
    bmp = BMP280(i2c, addr=BMP_addr)
    utime.sleep_ms(1000)

    lastTime = utime.ticks_ms()

    print("--- Start measurement ---")
    while True:
      currTime = utime.ticks_ms()
      if (currTime - lastTime > INTERVAL):
        lastTime = currTime
        led1.value(not led1.value())

        temp = bmp.temperature()
        pressure = bmp.pressure()
      
        # 根據標準海平面氣壓 (1013.25 hPa) 估算海拔高度 (米)
        altitude = 44330 * (1 - (pressure / 1013.25) ** (1 / 5.255))

        print(f"溫度: {temp:.2f} °C | 氣壓: {pressure:.2f} hPa | 估計海拔: {altitude:.2f} m")
  except Exception as e:
    print(e)
  except KeyboardInterrupt: # 使用者中斷執行(通常是輸入^C)
    print("Stop")

  print("Exit measurement.")