def __init__(self):
"""Virtually private constructor."""
if Connection.__instance is not None:
raise Exception("This class is a singleton!")
# pylint: disable=import-outside-toplevel
from binhoHostAdapter import binhoHostAdapter
from binhoHostAdapter import binhoUtilities
# pylint: enable=import-outside-toplevel
devices = binhoUtilities.listAvailableDevices()
if len(devices) > 0:
Connection.__instance = binhoHostAdapter.binhoHostAdapter(devices[0])
else:
raise RuntimeError("No Binho Nova found!")
def __init__(self):
""" Virtually private constructor. """
if Connection.__instance is not None:
raise Exception("This class is a singleton!")
from binhoHostAdapter import binhoHostAdapter
from binhoHostAdapter import binhoUtilities
utilities = binhoUtilities.binhoUtilities()
devices = utilities.listAvailableDevices()
if len(devices) > 0:
Connection.__instance = binhoHostAdapter.binhoHostAdapter(
devices[0])
else:
raise RuntimeError('No Binho Nova found!')
def _connectToI2CBus():
binho = None
error=False
# Connect - catch errors
try:
utilities = binhoUtilities.binhoUtilities()
devices = utilities.listAvailableDevices()
if len(devices) == 1:
binho = binhoHostAdapter.binhoHostAdapter(devices[0])
binho.setNumericalBase(10)
binho.setOperationMode(0, "I2C")
binho.setPullUpStateI2C(0, "EN")
binho.setClockI2C(0, 400000)
elif len(devices) > 1:
print("Error:\tUnable to connect to I2C bus. More than one Binho Host Adapter found.")
error=True
else:
print("Error:\tUnable to connect to I2C bus. No Binho Host Adapter found.")
error=True
except Exception as ee:
if type(ee) is RuntimeError:
print("Error:\tUnable to connect to I2C bus. %s" % (ee))
print("\t\tEnsure a Binho Host Adapter is connected to the computer." % (os.uname().machine))
else:
print("Error:\tFailed to connect to I2C bus. Error: %s" % (ee))
# We had an error....
error=True
# below is probably not needed, but ...
if(not error and binho == None):
print("Error: Failed to connect to I2C bus. Unable to continue")
return binho
#test from binhoHostAdapter import binhoHostAdapter from binhoHostAdapter import binhoUtilities import time binhoTesterCommPort = 'COM12' #may need to be changed # create the binhoHostAdapter object binhoTester = binhoHostAdapter.binhoHostAdapter(binhoTesterCommPort) binhoTester.setOperationMode(0, 'I2C') binhoTester.setPullUpStateI2C(0, "DIS") binhoTester.setClockI2C(0, 400000) # initialize the display print(binhoTester.startI2C(0, 0xE0)) print(binhoTester.writeByteI2C(0, 0x21)) print(binhoTester.endI2C(0)) print(binhoTester.startI2C(0, 0xE0)) print(binhoTester.writeByteI2C(0, 0x81)) print(binhoTester.endI2C(0)) print(binhoTester.startI2C(0, 0xE0)) print(binhoTester.writeByteI2C(0, 0xA0)) print(binhoTester.endI2C(0)) print(binhoTester.startI2C(0, 0xE0)) print(binhoTester.writeByteI2C(0, 0xEF))
