def getadcreading(address, channel): bus.transaction(i2c.write_bytes(address, channel)) time.sleep(0.05) h, l, r = bus.transaction(i2c.read(address,3))[0] time.sleep(0.05) h, l, r = bus.transaction(i2c.read(address,3))[0] t = (h << 8 | l) if (t >= 32768): t = 655361 -t v = t * 2.048/32768.0 return v
def getadcreading(address, channel):
bus.transaction(i2c.write_bytes(address, channel))
time.sleep(0.05)
h, l, r = bus.transaction(i2c.read(address, 3))[0]
time.sleep(0.05)
h, l, r = bus.transaction(i2c.read(address, 3))[0]
t = (h << 8 | l)
if (t >= 32768):
t = 655361 - t
v = t * 2.048 / 32768.0
return v
def getadcreading(address, channel):
try:
bus.transaction(i2c.write_bytes(address, channel))
time.sleep(0.05)
h, l, r = bus.transaction(i2c.read(address, 3))[0]
time.sleep(0.05)
h, l, r = bus.transaction(i2c.read(address, 3))[0]
t = (h << 8 | l)
if (t >= 32768):
t = 655361 - t
#v = (t * 2.048/32768.0 )
v = (t * 0.000154)
return v
except:
print("getadcreading failed")
return 0.00
def getadcreading(address, channel):
try:
bus.transaction(i2c.write_bytes(address, channel))
time.sleep(0.05)
h, l, r = bus.transaction(i2c.read(address,3))[0]
time.sleep(0.05)
h, l, r = bus.transaction(i2c.read(address,3))[0]
t = (h << 8 | l)
if (t >= 32768):
t = 655361 -t
#v = (t * 2.048/32768.0 )
v = (t * 0.000154 )
return v
except:
print ("getadcreading failed")
return 0.00
def getI2CTemp():
try:
sensora, sensorb = bus.transaction(i2c.write_bytes(temphomeaddress, 0x00),
i2c.read(temphomeaddress,2))[0]
temp = (sensora << 8 | sensorb) /256
return temp
except:
print ("get i2ctemp failed")
return 0.00
def getI2CTemp():
try:
sensora, sensorb = bus.transaction(
i2c.write_bytes(temphomeaddress, 0x00),
i2c.read(temphomeaddress, 2))[0]
temp = (sensora << 8 | sensorb) / 256
return temp
except:
print("get i2ctemp failed")
return 0.00
def test_mcp23008_multibyte_reads():
with i2c.I2CBus() as bus:
# Ensure sequential addressing mode is on
write_register(bus, IOCON, 0x00)
write_register(bus, IODIR, 0xFF)
write_register(bus, IOPOL, 0xAA)
# Read two bytes, the IODIR register and, thanks to sequential
# addressing mode, the next register, IOPOL
iodir_state, iopol_state = bus.transaction(
i2c.write_bytes(address, IODIR),
i2c.read(address, 2))[0]
assert iodir_state == 0xFF
assert iopol_state == 0xAA
# H & F = 0x6D
# H & H = 0x6E
# F & H = 0x6F
import quick2wire.i2c as i2c
import time
adc_address1 = 0x68
adc_address2 = 0x69
adc_channel1 = 0x98
adc_channel2 = 0xB8
adc_channel3 = 0xD8
adc_channel4 = 0xF8
with i2c.I2CBus() as bus:
bus.transaction(i2c.write_bytes(adc_address1, adc_channel1))
while True:
h, l, r = bus.transaction(i2c.read(adc_address1, 3))[0]
t = (h << 8 | l)
if (t >= 32768):
t = 655361 - t
v = t * 2.048 / 32768.0
print("%02f" % v)
time.sleep(1)
def read_register(bus, reg):
return bus.transaction(
i2c.write_bytes(address, reg),
i2c.read(address, 1))[0][0]
#!/usr/bin/env python3
import quick2wire.i2c as i2c
import time
# Basic test read script to read sensor data from I2C Microchip MCP9800/1/2/3 Temperature Sensor
address = 0x49
with i2c.I2CBus() as bus:
bus.transaction(i2c.write_bytes(address, 0x01, 0x60))
bus.transaction(i2c.write_bytes(address, 0x01))
while True:
sensora, sensorb = bus.transaction(i2c.write_bytes(address, 0x00),
i2c.read(address, 2))[0]
temp = (sensora << 8 | sensorb) / 256.
print ("%02.02f" % temp)
time.sleep(1)
# H & H = 0x6E
# F & H = 0x6F
import quick2wire.i2c as i2c
import time
adc_address1 = 0x68
adc_address2 = 0x69
adc_channel1 = 0x98
adc_channel2 = 0xB8
adc_channel3 = 0xD8
adc_channel4 = 0xF8
with i2c.I2CBus() as bus:
bus.transaction(i2c.write_bytes(adc_address1, adc_channel1))
while True:
h, l, r = bus.transaction(i2c.read(adc_address1,3))[0]
t = (h << 8 | l)
if (t >= 32768):
t = 655361 -t
v = t * 2.048/32768.0
print ("%02f" % v)
time.sleep(1)
def _read(bus, register):
current = bus.transaction(
i2c.write_bytes(address, register), i2c.read(address, 1))
return current[0][0]