def scan_devices(bus: smbus.SMBus):
connected = []
for device in range(20, 120):
try:
bus.write_quick(device)
connected.append(device)
except Exception:
pass
return connected
class Scan(Base):
def __init__(self):
self.found = []
def setup(self):
self.bus = SMBus(1)
return self
def run(self):
for i in range(1, 127):
# rez = self.bus.read_byte(i)
try:
rez = self.bus.write_quick(i)
self.found.append(i)
print "%s -> %s" % (i, rez)
except IOError:
pass
def command(self, line):
if re.search('^rescan$', line):
self.run()
if len(self.found) > 0:
self.commander.default_address = self.found[0]
return True
elif re.search('^list$', line):
for a in self.found:
print a
return True
def help(self):
return "rescan # rescan for i2c"
class Scan(Base):
def __init__(self):
self.found = []
def setup(self):
self.bus = SMBus(1)
return self
def run(self):
for i in range(1,127):
# rez = self.bus.read_byte(i)
try:
rez = self.bus.write_quick(i)
self.found.append(i)
print "%s -> %s" % (i,rez)
except IOError:
pass
def command(self,line):
if re.search('^rescan$', line):
self.run()
if len(self.found) > 0:
self.commander.default_address = self.found[0]
return True
elif re.search('^list$', line):
for a in self.found:
print a
return True
def help(self):
return "rescan # rescan for i2c"
#!/usr/bin/python3 import time import smbus from smbus import SMBus HIH6130 = SMBus(1) while(True): var = [0, 0, 0, 0] HIH6130.write_quick(0x27) time.sleep(0.050) var = HIH6130.read_i2c_block_data(0x27, 0) status =(var[0] & 0xc0) >> 6 humidity = (((var[0] & 0x3f) << 8) + var[1]) * 100.0 / 16382.0 tempC = ((var[2] << 6) +((var[3] & 0xfc) >> 2)) * 165.0 / 16382.0 - 40.0 print 'Feuchtigkeit: %.2f RH' % humidity print 'Temperatur : %.2f C' % tempC time.sleep(1)
try:
# write block data
i2c.write_i2c_block_data(addr, index, seq)
except OSError as e:
print(e)
sleep(delay)
for i in range(index, index + count):
data[i] = seq[i - index]
exit(0)
try:
# zero byte write
i2c.write_quick(addr)
except OSError as e:
error[0] = e
sleep(delay)
try:
# single byte read
read[0] = i2c.read_byte(addr)
except OSError as e:
error[1] = e
sleep(delay)
try:
# single byte write
class WeatherStation:
def __init__(self, dataFile='/dev/null'):
self.dataFile = dataFile
self.fetched = False
# Initialise the BMP085 and use STANDARD mode (default value)
# self.bmp = BMP085(0x77, debug=True)
self.bmp = BMP085(0x77)
# To specify a different operating mode, uncomment one of the following:
# self.bmp = BMP085(0x77, 0) # ULTRALOWPOWER Mode
# self.bmp = BMP085(0x77, 1) # STANDARD Mode
# self.bmp = BMP085(0x77, 2) # HIRES Mode
# self.bmp = BMP085(0x77, 3) # ULTRAHIRES Mode
# Initilize HIH-6130.
bus = GFDITools.guessBus()
self.HIH6130 = SMBus(bus=bus)
# Temporary storage array for HIH6130 data
self.blockData = [0, 0, 0, 0]
def fetchData(self):
# Fetch temp & pressure data from BMP
self.temp = self.bmp.readTemperature()
self.pressure = self.bmp.readPressure() / 100.0
# Altitude seems buggy, so we're skipping it for now.
# altitude = self.bmp.readAltitude()
# Tell HIH-6130 we want temperature and humidity data.
self.HIH6130.write_quick(0x27)
# Wait for it.
time.sleep(0.050)
# Read the data we requested.
blockData = self.HIH6130.read_i2c_block_data(0x27, 0)
# Process the data.
self.status = (blockData[0] & 0xc0) >> 6
self.humidity = (((blockData[0] & 0x3f) << 8) + blockData[1]) * 100.0 / 16383.0
self.tempC = ((blockData[2] << 6) + ((blockData[3] & 0xfc) >> 2)) * 165.0 / 16383.0 - 40.0
# tempF = tempC*9.0/5.0 + 32.0
# Make a note that there is now data to be had.
self.fetched = True
def printData(self):
# print data to screen
# print "Data: ", "%02x "*len(d)%tuple(d)
# print "Status: ", status
if self.fetched:
print "Humidity: %.2f" % self.humidity, "%RH"
print "Temperature: %.2f C" % self.tempC
print "Barometric Pressure: %.2f hPa" % self.pressure
print "Temperature: %.2f C" % self.temp
else:
print "No data has been fetched."
return -1
def recordData(self):
if self.fetched:
if not os.path.exists(self.dataFile):
with open(self.dataFile, 'w') as csvfile:
datawriter = csv.writer(
csvfile,
quotechar=',',
quoting=csv.QUOTE_MINIMAL
)
datawriter.writerow([
'Date',
'Temp(C)',
'Pressure(hPa)',
'Humidity(%RH)'
])
with open(self.dataFile, 'a+') as csvfile:
datawriter = csv.writer(csvfile, quotechar=',', quoting=csv.QUOTE_MINIMAL)
datawriter.writerow([datetime.datetime.now(), self.tempC, self.pressure, self.humidity])
else:
print "No data has been fetched."
return -1
