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-rw-r--r--klippy/extras/htu21d.py226
1 files changed, 120 insertions, 106 deletions
diff --git a/klippy/extras/htu21d.py b/klippy/extras/htu21d.py
index 688338d9..d7104503 100644
--- a/klippy/extras/htu21d.py
+++ b/klippy/extras/htu21d.py
@@ -19,73 +19,78 @@ from . import bus
#
######################################################################
-HTU21D_I2C_ADDR= 0x40
+HTU21D_I2C_ADDR = 0x40
HTU21D_COMMANDS = {
- 'HTU21D_TEMP' :0xE3,
- 'HTU21D_HUMID' :0xE5,
- 'HTU21D_TEMP_NH' :0xF3,
- 'HTU21D_HUMID_NH' :0xF5,
- 'WRITE' :0xE6,
- 'READ' :0xE7,
- 'RESET' :0xFE,
- 'SERIAL' :[0xFA,0x0F,0xFC,0xC9],
- 'FIRMWARE_READ' :[0x84,0xB8]
-
+ "HTU21D_TEMP": 0xE3,
+ "HTU21D_HUMID": 0xE5,
+ "HTU21D_TEMP_NH": 0xF3,
+ "HTU21D_HUMID_NH": 0xF5,
+ "WRITE": 0xE6,
+ "READ": 0xE7,
+ "RESET": 0xFE,
+ "SERIAL": [0xFA, 0x0F, 0xFC, 0xC9],
+ "FIRMWARE_READ": [0x84, 0xB8],
}
HTU21D_RESOLUTION_MASK = 0x7E
HTU21D_RESOLUTIONS = {
- 'TEMP14_HUM12':int('00000000',2),
- 'TEMP13_HUM10':int('10000000',2),
- 'TEMP12_HUM08':int('00000001',2),
- 'TEMP11_HUM11':int('10000001',2)
+ "TEMP14_HUM12": int("00000000", 2),
+ "TEMP13_HUM10": int("10000000", 2),
+ "TEMP12_HUM08": int("00000001", 2),
+ "TEMP11_HUM11": int("10000001", 2),
}
ID_MAP = {
- 0x0D: 'SI7013',
- 0x14: 'SI7020',
- 0x15: 'SI7021',
- 0x31: 'SHT21',
- 0x01: 'SHT21',
- 0x32: 'HTU21D',
+ 0x0D: "SI7013",
+ 0x14: "SI7020",
+ 0x15: "SI7021",
+ 0x31: "SHT21",
+ 0x01: "SHT21",
+ 0x32: "HTU21D",
}
# Device with conversion time for tmp/resolution bit
# The format is:
# <CHIPNAME>:{id:<ID>, ..<RESOlUTION>:[<temp time>,<humidity time>].. }
HTU21D_DEVICES = {
- 'SI7013':{
- 'TEMP14_HUM12':[.11,.12],
- 'TEMP13_HUM10':[ .7, .5],
- 'TEMP12_HUM08':[ .4, .4],
- 'TEMP11_HUM11':[ .3, .7]},
- 'SI7020':{
- 'TEMP14_HUM12':[.11,.12],
- 'TEMP13_HUM10':[ .7, .5],
- 'TEMP12_HUM08':[ .4, .4],
- 'TEMP11_HUM11':[ .3, .7]},
- 'SI7021':{
- 'TEMP14_HUM12':[.11,.12],
- 'TEMP13_HUM10':[ .7, .5],
- 'TEMP12_HUM08':[ .4, .4],
- 'TEMP11_HUM11':[ .3, .7]},
- 'SHT21': {
- 'TEMP14_HUM12':[.85,.29],
- 'TEMP13_HUM10':[.43, .9],
- 'TEMP12_HUM08':[.22, .4],
- 'TEMP11_HUM11':[.11,.15]},
- 'HTU21D':{
- 'TEMP14_HUM12':[.50,.16],
- 'TEMP13_HUM10':[.25, .5],
- 'TEMP12_HUM08':[.13, .3],
- 'TEMP11_HUM11':[.12, .8]}
+ "SI7013": {
+ "TEMP14_HUM12": [0.11, 0.12],
+ "TEMP13_HUM10": [0.7, 0.5],
+ "TEMP12_HUM08": [0.4, 0.4],
+ "TEMP11_HUM11": [0.3, 0.7],
+ },
+ "SI7020": {
+ "TEMP14_HUM12": [0.11, 0.12],
+ "TEMP13_HUM10": [0.7, 0.5],
+ "TEMP12_HUM08": [0.4, 0.4],
+ "TEMP11_HUM11": [0.3, 0.7],
+ },
+ "SI7021": {
+ "TEMP14_HUM12": [0.11, 0.12],
+ "TEMP13_HUM10": [0.7, 0.5],
+ "TEMP12_HUM08": [0.4, 0.4],
+ "TEMP11_HUM11": [0.3, 0.7],
+ },
+ "SHT21": {
+ "TEMP14_HUM12": [0.85, 0.29],
+ "TEMP13_HUM10": [0.43, 0.9],
+ "TEMP12_HUM08": [0.22, 0.4],
+ "TEMP11_HUM11": [0.11, 0.15],
+ },
+ "HTU21D": {
+ "TEMP14_HUM12": [0.50, 0.16],
+ "TEMP13_HUM10": [0.25, 0.5],
+ "TEMP12_HUM08": [0.13, 0.3],
+ "TEMP11_HUM11": [0.12, 0.8],
+ },
}
-#temperature coefficient for RH compensation at range 0C..80C,
+# temperature coefficient for RH compensation at range 0C..80C,
# for HTU21D & SHT21 only
-HTU21D_TEMP_COEFFICIENT= -0.15
-#crc8 polynomial for 16bit value, CRC8 -> x^8 + x^5 + x^4 + 1
-HTU21D_CRC8_POLYNOMINAL= 0x13100
+HTU21D_TEMP_COEFFICIENT = -0.15
+# crc8 polynomial for 16bit value, CRC8 -> x^8 + x^5 + x^4 + 1
+HTU21D_CRC8_POLYNOMINAL = 0x13100
+
class HTU21D:
def __init__(self, config):
@@ -93,19 +98,21 @@ class HTU21D:
self.name = config.get_name().split()[-1]
self.reactor = self.printer.get_reactor()
self.i2c = bus.MCU_I2C_from_config(
- config, default_addr=HTU21D_I2C_ADDR, default_speed=100000)
- self.hold_master_mode = config.getboolean('htu21d_hold_master',False)
- self.resolution = config.get('htu21d_resolution','TEMP12_HUM08')
- self.report_time = config.getint('htu21d_report_time',30,minval=5)
+ config, default_addr=HTU21D_I2C_ADDR, default_speed=100000
+ )
+ self.hold_master_mode = config.getboolean("htu21d_hold_master", False)
+ self.resolution = config.get("htu21d_resolution", "TEMP12_HUM08")
+ self.report_time = config.getint("htu21d_report_time", 30, minval=5)
if self.resolution not in HTU21D_RESOLUTIONS:
- raise config.error("Invalid HTU21D Resolution. Valid are %s"
- % '|'.join(HTU21D_RESOLUTIONS.keys()))
- self.deviceId = config.get('sensor_type')
- self.temp = self.min_temp = self.max_temp = self.humidity = 0.
+ raise config.error(
+ "Invalid HTU21D Resolution. Valid are %s"
+ % "|".join(HTU21D_RESOLUTIONS.keys())
+ )
+ self.deviceId = config.get("sensor_type")
+ self.temp = self.min_temp = self.max_temp = self.humidity = 0.0
self.sample_timer = self.reactor.register_timer(self._sample_htu21d)
self.printer.add_object("htu21d " + self.name, self)
- self.printer.register_event_handler("klippy:connect",
- self.handle_connect)
+ self.printer.register_event_handler("klippy:connect", self.handle_connect)
def handle_connect(self):
self._init_htu21d()
@@ -123,14 +130,15 @@ class HTU21D:
def _init_htu21d(self):
# Device Soft Reset
- self.i2c.i2c_write([HTU21D_COMMANDS['RESET']])
+ self.i2c.i2c_write([HTU21D_COMMANDS["RESET"]])
# Wait 15ms after reset
- self.reactor.pause(self.reactor.monotonic() + .15)
+ self.reactor.pause(self.reactor.monotonic() + 0.15)
# Read ChipId
- params = self.i2c.i2c_read([HTU21D_COMMANDS['SERIAL'][2],
- HTU21D_COMMANDS['SERIAL'][3]], 3)
- response = bytearray(params['response'])
+ params = self.i2c.i2c_read(
+ [HTU21D_COMMANDS["SERIAL"][2], HTU21D_COMMANDS["SERIAL"][3]], 3
+ )
+ response = bytearray(params["response"])
rdevId = response[0] << 8
rdevId |= response[1]
checksum = response[2]
@@ -145,98 +153,104 @@ class HTU21D:
if self.deviceId != guess_dev:
logging.warning(
- "htu21d: Found device %s. Forcing to type %s as config." %
- (guess_dev, self.deviceId))
+ "htu21d: Found device %s. Forcing to type %s as config."
+ % (guess_dev, self.deviceId)
+ )
# Set Resolution
- params = self.i2c.i2c_read([HTU21D_COMMANDS['READ']], 1)
- response = bytearray(params['response'])
+ params = self.i2c.i2c_read([HTU21D_COMMANDS["READ"]], 1)
+ response = bytearray(params["response"])
registerData = response[0] & HTU21D_RESOLUTION_MASK
registerData |= HTU21D_RESOLUTIONS[self.resolution]
- self.i2c.i2c_write([HTU21D_COMMANDS['WRITE']],registerData)
+ self.i2c.i2c_write([HTU21D_COMMANDS["WRITE"]], registerData)
logging.info("htu21d: Setting resolution to %s " % self.resolution)
def _sample_htu21d(self, eventtime):
try:
# Read Temperature
if self.hold_master_mode:
- params = self.i2c.i2c_write([HTU21D_COMMANDS['HTU21D_TEMP']])
+ params = self.i2c.i2c_write([HTU21D_COMMANDS["HTU21D_TEMP"]])
else:
- params = self.i2c.i2c_write([HTU21D_COMMANDS['HTU21D_TEMP_NH']])
+ params = self.i2c.i2c_write([HTU21D_COMMANDS["HTU21D_TEMP_NH"]])
# Wait
- self.reactor.pause(self.reactor.monotonic()
- + HTU21D_DEVICES[self.deviceId][self.resolution][0])
-
+ self.reactor.pause(
+ self.reactor.monotonic()
+ + HTU21D_DEVICES[self.deviceId][self.resolution][0]
+ )
- params = self.i2c.i2c_read([],3)
+ params = self.i2c.i2c_read([], 3)
- response = bytearray(params['response'])
- rtemp = response[0] << 8
+ response = bytearray(params["response"])
+ rtemp = response[0] << 8
rtemp |= response[1]
if self._chekCRC8(rtemp) != response[2]:
- logging.warning(
- "htu21d: Checksum error on Temperature reading!"
- )
+ logging.warning("htu21d: Checksum error on Temperature reading!")
else:
- self.temp = (0.002681 * float(rtemp) - 46.85)
+ self.temp = 0.002681 * float(rtemp) - 46.85
logging.debug("htu21d: Temperature %.2f " % self.temp)
# Read Humidity
if self.hold_master_mode:
- self.i2c.i2c_write([HTU21D_COMMANDS['HTU21D_HUMID']])
+ self.i2c.i2c_write([HTU21D_COMMANDS["HTU21D_HUMID"]])
else:
- self.i2c.i2c_write([HTU21D_COMMANDS['HTU21D_HUMID_NH']])
+ self.i2c.i2c_write([HTU21D_COMMANDS["HTU21D_HUMID_NH"]])
# Wait
- self.reactor.pause(self.reactor.monotonic()
- + HTU21D_DEVICES[self.deviceId][self.resolution][1])
+ self.reactor.pause(
+ self.reactor.monotonic()
+ + HTU21D_DEVICES[self.deviceId][self.resolution][1]
+ )
- params = self.i2c.i2c_read([],3)
+ params = self.i2c.i2c_read([], 3)
- response = bytearray(params['response'])
+ response = bytearray(params["response"])
rhumid = response[0] << 8
- rhumid|= response[1]
+ rhumid |= response[1]
if self._chekCRC8(rhumid) != response[2]:
logging.warning("htu21d: Checksum error on Humidity reading!")
else:
- #clear status bits,
+ # clear status bits,
# humidity always returns xxxxxx10 in the LSB field
- rhumid ^= 0x02;
- self.humidity = (0.001907 * float(rhumid) - 6)
- if (self.humidity < 0):
- #due to RH accuracy, measured value might be
+ rhumid ^= 0x02
+ self.humidity = 0.001907 * float(rhumid) - 6
+ if self.humidity < 0:
+ # due to RH accuracy, measured value might be
# slightly less than 0 or more 100
self.humidity = 0
- elif (self.humidity > 100):
+ elif self.humidity > 100:
self.humidity = 100
# Only for HTU21D & SHT21.
# Calculates temperature compensated Humidity, %RH
- if( self.deviceId in ['SHT21','HTU21D']
- and self.temp > 0 and self.temp < 80):
+ if (
+ self.deviceId in ["SHT21", "HTU21D"]
+ and self.temp > 0
+ and self.temp < 80
+ ):
logging.debug("htu21d: Do temp compensation..")
self.humidity = self.humidity
- + (25.0 - self.temp) * HTU21D_TEMP_COEFFICIENT;
+ +(25.0 - self.temp) * HTU21D_TEMP_COEFFICIENT
logging.debug("htu21d: Humidity %.2f " % self.humidity)
except Exception:
logging.exception("htu21d: Error reading data")
- self.temp = self.humidity = .0
+ self.temp = self.humidity = 0.0
return self.reactor.NEVER
if self.temp < self.min_temp or self.temp > self.max_temp:
self.printer.invoke_shutdown(
"HTU21D temperature %0.1f outside range of %0.1f:%.01f"
- % (self.temp, self.min_temp, self.max_temp))
+ % (self.temp, self.min_temp, self.max_temp)
+ )
measured_time = self.reactor.monotonic()
print_time = self.i2c.get_mcu().estimated_print_time(measured_time)
self._callback(print_time, self.temp)
return measured_time + self.report_time
- def _chekCRC8(self,data):
- for bit in range(0,16):
- if (data & 0x8000):
- data = (data << 1) ^ HTU21D_CRC8_POLYNOMINAL;
+ def _chekCRC8(self, data):
+ for bit in range(0, 16):
+ if data & 0x8000:
+ data = (data << 1) ^ HTU21D_CRC8_POLYNOMINAL
else:
data <<= 1
data = data >> 8
@@ -244,8 +258,8 @@ class HTU21D:
def get_status(self, eventtime):
return {
- 'temperature': round(self.temp, 2),
- 'humidity': self.humidity,
+ "temperature": round(self.temp, 2),
+ "humidity": self.humidity,
}
generated by cgit v1.2.3-70-g09d2 (git 2.50.1) at 2025-08-31 19:48:19 +0000