ich habe eine Anfängerfrage. Ich möchte den in Python geschriebenen Treiber für den Temperatursensor SHT35 benutzen, den ich unter https://github.com/dvsu/Sensirion-SHT3X ... n/sht3x.py gefunden habe:
Code: Alles auswählen
from ubinascii import hexlify
from time import sleep
from machine import I2C
class SHT3X:
def __init__(self, bus_obj:I2C, address:int):
self.address = address
self.bus = bus_obj
def get_temperature_in_celsius(self, data:int) -> float:
# Temperature conversion formula (Celsius)
# T[C] = -45 + (175 * (raw_temp_data / (2^16 - 1)))
return round(-45 + (175 * (data / ((2**16) - 1))), 2)
def get_temperature_in_fahrenheit(self, data:int) -> float:
# Temperature conversion formula (Fahrenheit)
# T[F] = -49 + (315 * (raw_temp_data / (2^16 - 1)))
return round(-49 + (315 * (data / ((2**16) - 1))), 2)
def get_relative_humidity(self, data:int) -> float:
# Relative humidity conversion formula
# RH = 100 * (raw_humidity_data / (2^16 - 1))
return round(100 * (data/ ((2**16) - 1)), 2)
def get_measurement(self) -> dict:
try:
sleep(0.05)
self.bus.writeto(self.address, b'\x2c\x06')
sleep(0.05)
data = hexlify(self.bus.readfrom(self.address, 6))
temp_data = int(data[0:4], 16)
humi_data = int(data[6:10], 16)
sleep(0.05)
return {
"temp_celsius": self.get_temperature_in_celsius(temp_data),
"temp_fahrenheit": self.get_temperature_in_fahrenheit(temp_data),
"humidity": self.get_relative_humidity(humi_data)
}
except Exception as e:
print("Failed to read temperature and humidity value")
print(e)
class SHT31(SHT3X):
def __init__(self, bus_obj:I2C):
self.sensor_name = 'SHT31'
super().__init__(bus_obj, address=68) # 0x44
class SHT35(SHT3X):
def __init__(self, bus_obj:I2C):
self.sensor_name = 'SHT35'
super().__init__(bus_obj, address=69) # 0x45Code: Alles auswählen
from machine import Pin, I2C
# Initialisierung I2C-Pins
i2c_sda = Pin(14)
i2c_scl = Pin(15)
# Initialisierung I2C
i2c = I2C(1,sda=i2c_sda,scl=i2c_scl,freq=400000)