Yo3iti la 13 aprilie 2022 22:19

2022-04-13T22:19:16Z

← Versiunea anterioară		Versiunea de la data 14 aprilie 2022 01:19
Linia 1:		Linia 1:
	<~~syntaxhighlight~~ lang="python">		<source lang="python">
	import smbus		import smbus

Linia 173:		Linia 173:
	return tempOut		return tempOut

	</~~syntaxhighlight~~>		</source>

Yo3iti la 18 aprilie 2020 19:41

2020-04-18T19:41:04Z

← Versiunea anterioară		Versiunea de la data 18 aprilie 2020 22:41
Linia 36:		Linia 36:
	def bytesToTemp(self, data):		def bytesToTemp(self, data):
	# Ajustare pentru extended mode		# Ajustare pentru extended mode
			# vezi mai jos, def setExtendedMode
	ext = self.extractConfig(1, 4, 1)		ext = self.extractConfig(1, 4, 1)
	#ext = data[1] & 0x01		#ext = data[1] & 0x01
Linia 101:		Linia 102:
	# 0 : 0.25 Hz		# 0 : 0.25 Hz
	# 1 : 1 Hz		# 1 : 1 Hz
	# 2 : 4 Hz (~~default~~)		# 2 : 4 Hz (implicit)
	# 3 : 8 Hz		# 3 : 8 Hz
	self.injectConfig(rate, 1, 6, 2)		self.injectConfig(rate, 1, 6, 2)

	def setExtendedMode(self, mode):		def setExtendedMode(self, mode):
	# 0 : 12-bit ( -55C to 128C)		# 0 : 12-bit ( de la -55C la 128C)
	# 1 : 13-bit ( -55C to 150C)		# 1 : 13-bit ( de la -55C la 150C)

	self.injectConfig(mode, 1, 4, 1)		self.injectConfig(mode, 1, 4, 1)
Linia 118:		Linia 119:

	def setAlertPolarity(self, polarity):		def setAlertPolarity(self, polarity):
	# 0 : ~~Active~~ Low		# 0 : Activ Low
	# 1 : ~~Active~~ High		# 1 : Activ High
	self.injectConfig(polarity, 0, 2, 1)		self.injectConfig(polarity, 0, 2, 1)

Yo3iti: Pagină nouă: import smbus TEMPERATURE_REG = 0x00 CONFIG_REG = 0x01 T_LOW_REG = 0x02 T_HIGH_REG = 0x03 ADDRESSES = [0x48, 0x49, 0x4A, 0x4B] tempConvert = {...

2020-04-18T19:39:00Z

Pagină nouă: <syntaxhighlight lang="python"> import smbus TEMPERATURE_REG = 0x00 CONFIG_REG = 0x01 T_LOW_REG = 0x02 T_HIGH_REG = 0x03 ADDRESSES = [0x48, 0x49, 0x4A, 0x4B] tempConvert = {...

Pagină nouă

<syntaxhighlight lang="python">
import smbus

TEMPERATURE_REG = 0x00
CONFIG_REG = 0x01
T_LOW_REG = 0x02
T_HIGH_REG = 0x03

ADDRESSES = [0x48, 0x49, 0x4A, 0x4B]

tempConvert = {
'C': lambda x: x,
'K': lambda x: x+273.15,
'F': lambda x: x*9/5+32,
'R': lambda x: (x+273.15)*9/5
}

tempConvertInv = {
'C': lambda x: x,
'K': lambda x: x-273.15,
'F': lambda x: (x-32)*5/9,
'R': lambda x: (x*5/9)-273.15
}
class TMP102(object):
def __init__(self, units=None, address=0x48, busnum=1):
units = units or 'C'
if (address not in ADDRESSES):
raise ValueError("Adresă incorectă: {0:#x}".format(address))
self.address = address
self.busnum = busnum

self.setUnits(units)
self.bus = smbus.SMBus(self.busnum)
self.readTemperature()

def bytesToTemp(self, data):
# Ajustare pentru extended mode
ext = self.extractConfig(1, 4, 1)
#ext = data[1] & 0x01
res = int((data[0] << (4+ext)) + (data[1] >> (4-ext)))

if (data[0] | 0x7F is 0xFF):
# 2 complement (x = x-2^bits)
res = res - 4096*(2**ext)
# Scrie temperatura în Celsius
return res*0.0625

def tempToBytes(self, temp):
# Temp trebuie transformată ÎNAINTE de introducere
data = [0 , 0]
res = int(temp/0.0625)
ext = self.extractConfig(1, 4, 1)
if (res < 0):
res = res + 4096 * (2**ext)
data[0] = (res >> (4 + ext)) & 0xFF
data[1] = ((res & (2**(4 + ext)-1)) << (4 - ext)) | ext
return data

def extractConfig(self, num, location=0, length=0):

data = self.bus.read_i2c_block_data(self.address, CONFIG_REG, 2)
if (num == 3):
#dump complet de regiștri
return data
else:
mask = 2**length - 1
return (data[num] >> location) & mask

def injectConfig(self, setting, num, location, length):
mask = (2**length - 1) << location
setting = (setting << location) & mask
data = self.bus.read_i2c_block_data(self.address, CONFIG_REG, 2)
data[num] &= ~mask
data[num] |= setting
self.bus.write_i2c_block_data(self.address, CONFIG_REG, data)

def readTemperature(self, units=None):
data = self.bus.read_i2c_block_data(self.address, TEMPERATURE_REG, 2)
tempC = self.bytesToTemp(data)
units = units or self.units

try:
tempOut = tempConvert[units](tempC)
except:
raise ValueError('Unități nevalide "' + self.units + '"')
return tempOut

def getUnits(self):
return self.units

def setUnits(self, units):
if (units.upper() in 'RCKF' and len(units) == 1):
self.units = units.upper()
else:
raise ValueError("Unități nevalide, trebuie utilizat C(elsius), K(elvin),"
"F(ahrenheit), sau R(ankine)")

def setConversionRate(self, rate):
# 0 : 0.25 Hz
# 1 : 1 Hz
# 2 : 4 Hz (default)
# 3 : 8 Hz
self.injectConfig(rate, 1, 6, 2)

def setExtendedMode(self, mode):
# 0 : 12-bit ( -55C to 128C)
# 1 : 13-bit ( -55C to 150C)

self.injectConfig(mode, 1, 4, 1)

def sleep(self):
self.injectConfig(True, 0, 0, 1)

def wakeup(self):
self.injectConfig(False, 0, 0, 1)

def setAlertPolarity(self, polarity):
# 0 : Active Low
# 1 : Active High
self.injectConfig(polarity, 0, 2, 1)

def alert(self):
return extractConfig(1, 5, 1)

def setFault(self, faultSetting):
# 0 : 1 eroare
# 1 : 2 erori
# 2 : 4 erori
# 3 : 6 erori
self.injectConfig(faultSetting, 0, 3, 2)

def setAlertMode(self, mode):
# 0 : Mode comparator (Activ în interiorul ecartului de temperatură)
# 1 : Mod termostat (Activ dacă e peste T_High, reset la citire)
self.injectConfig(mode, 0, 1, 1)

def setBoundTemp(self, upper, temperature, units=None):
units = units or self.units
ext = self.extractConfig(1, 4, 1)
try:
temperature = tempConvertInv[units](temperature)
except:
raise ValueError('Unități nevalide "' + self.units + '"')
if (ext is 1 and temperature > 150):
temperature = 150
elif (temperature < -55):
temperature = -55
data = self.tempToBytes(temperature)

if (upper):
reg = T_HIGH_REG
else:
reg = T_LOW_REG

self.bus.write_i2c_block_data(self.address, reg, data)

def getBoundTemp(self, upper, units=None):
units = units or self.units
if (upper):
reg = T_HIGH_REG
else:
reg = T_LOW_REG
data = self.bus.read_i2c_block_data(self.address, reg, 2)
tempC = self.bytesToTemp(data)

try:
tempOut = tempConvert[units](tempC)
except:
raise ValueError('Unități nevalide "' + self.units + '"')
return tempOut

</syntaxhighlight>

Citire senzor tmp102 pentru driver de termostatare - Revizia istoricului

Yo3iti la 13 aprilie 2022 22:19

Yo3iti la 18 aprilie 2020 19:41

Yo3iti: Pagină nouă: import smbus TEMPERATURE_REG = 0x00 CONFIG_REG = 0x01 T_LOW_REG = 0x02 T_HIGH_REG = 0x03 ADDRESSES = [0x48, 0x49, 0x4A, 0x4B] tempConvert = {...