def begin(self, address=MPR121_I2CADDR_DEFAULT, i2c=None, **kwargs):
"""Initialize communication with the MPR121.
Can specify a custom I2C address for the device using the address
parameter (defaults to 0x5A). Optional i2c parameter allows specifying a
custom I2C bus source (defaults to platform's I2C bus).
Returns True if communication with the MPR121 was established, otherwise
returns False.
"""
# Assume we're using platform's default I2C bus if none is specified.
if i2c is None:
import Adafruit_GPIO.I2C as I2C
i2c = I2C
# Require repeated start conditions for I2C register reads. Unfortunately
# the MPR121 is very sensitive and requires repeated starts to read all
# the registers.
I2C.require_repeated_start()
# Save a reference to the I2C device instance for later communication.
self._device = i2c.get_i2c_device(address, **kwargs)
return self._reset()
def begin(self, address=MPR121_I2CADDR_DEFAULT, i2c=None, **kwargs):
"""Initialize communication with the MPR121.
Can specify a custom I2C address for the device using the address
parameter (defaults to 0x5A). Optional i2c parameter allows specifying a
custom I2C bus source (defaults to platform's I2C bus).
Returns True if communication with the MPR121 was established, otherwise
returns False.
"""
# Assume we're using platform's default I2C bus if none is specified.
if i2c is None:
import Adafruit_GPIO.I2C as I2C
i2c = I2C
# Require repeated start conditions for I2C register reads. Unfortunately
# the MPR121 is very sensitive and requires repeated starts to read all
# the registers.
I2C.require_repeated_start()
# Save a reference to the I2C device instance for later communication.
self._device = i2c.get_i2c_device(address, **kwargs)
return self._reset()
import Adafruit_GPIO.I2C as I2C
I2C.require_repeated_start()
class Melexis:
def __init__(self, address=0x5A):
self._i2c = I2C.Device(address, busnum=1)
def readAmbient(self):
return self._readTemp(0x06)
def readObject1(self):
return self._readTemp(0x07)
def readObject2(self):
return self._readTemp(0x08)
def _readTemp(self, reg):
temp = self._i2c.readS16(reg)
print("raw temp {}".format(temp))
temp = temp * .02 - 273.15
return temp
def readsensor():
sensor = Melexis()
t = sensor.readObject1()
a = sensor.readAmbient()
print("Object: {}C , Ambiant: {}C".format(round(t, 3), round(a, 3)))
