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-rw-r--r--src/home/temphum/i2c.py52
1 files changed, 0 insertions, 52 deletions
diff --git a/src/home/temphum/i2c.py b/src/home/temphum/i2c.py
deleted file mode 100644
index 7d8e2e3..0000000
--- a/src/home/temphum/i2c.py
+++ /dev/null
@@ -1,52 +0,0 @@
-import abc
-import smbus
-
-from .base import BaseSensor, SensorType
-
-
-class I2CSensor(BaseSensor, abc.ABC):
- def __init__(self, bus: int):
- super().__init__()
- self.bus = smbus.SMBus(bus)
-
-
-class DHT12(I2CSensor):
- i2c_addr = 0x5C
-
- def _measure(self):
- raw = self.bus.read_i2c_block_data(self.i2c_addr, 0, 5)
- if (raw[0] + raw[1] + raw[2] + raw[3]) & 0xff != raw[4]:
- raise ValueError("checksum error")
- return raw
-
- def temperature(self) -> float:
- raw = self._measure()
- temp = raw[2] + (raw[3] & 0x7f) * 0.1
- if raw[3] & 0x80:
- temp *= -1
- return temp
-
- def humidity(self) -> float:
- raw = self._measure()
- return raw[0] + raw[1] * 0.1
-
-
-class Si7021(I2CSensor):
- i2c_addr = 0x40
-
- def temperature(self) -> float:
- raw = self.bus.read_i2c_block_data(self.i2c_addr, 0xE3, 2)
- return 175.72 * (raw[0] << 8 | raw[1]) / 65536.0 - 46.85
-
- def humidity(self) -> float:
- raw = self.bus.read_i2c_block_data(self.i2c_addr, 0xE5, 2)
- return 125.0 * (raw[0] << 8 | raw[1]) / 65536.0 - 6.0
-
-
-def create_sensor(type: SensorType, bus: int) -> BaseSensor:
- if type == SensorType.Si7021:
- return Si7021(bus)
- elif type == SensorType.DHT12:
- return DHT12(bus)
- else:
- raise ValueError('unexpected sensor type')