from time import sleep
import mcp23008 as mcp
buttonpin=6
ledpin=7
dev=mcp.mcp23008()
dev.set_address(0x20)
dev.set_bus(1)
dev.begin()
dev.set_direction(ledpin,dev.OUTPUT)
dev.set_direction(buttonpin,dev.INPUT)
dev.set_pullup(buttonpin,dev.ENABLE)
sleep(0.5)
while 1:
but=1-dev.gpio(buttonpin)
dev.set_gpio(ledpin,but)
sleep(0.1)
# kwargs = {'address': 0x40}
# si7020_a20 = SI7020_A20(bus, kwargs)
kwargs = {'address': 0x40}
sht25 = SHT25(bus, kwargs)
## AIR COMPRESSOR DEMO END ##
## WAREHOUSE DEMO START DEF ##
time.sleep(.1)
tca9546.change_channel(1)
time.sleep(.1)
gpio_output_map = {0}
kwargs = {'address': 0x20, 'gpio_output_map': gpio_output_map}
mcp23008 = mcp23008(bus, kwargs)
kwargs = {}
kwargs = {'address': 0x13}
vcnl4010 = vcnl4010.VCNL4010(bus, kwargs)
## WAREHOUSE DEMO END DEF ##
except:
print('definition fail')
def set_certificates(client):
from iothub_client_cert import CERTIFICATES
try:
client.set_option("TrustedCerts", CERTIFICATES)
print ( "set_option TrustedCerts successful" )
import smbus
# Get I2C bus, this is bus 1
bus = smbus.SMBus(1)
#define which GPIOs are to be used as outputs. By default all GPIOs are defined as inputs.
#pass the number of the GPIOs in a set to the object. 0 is the first relay 1 is the second relay etc.
#for this example we have no relays and don't need this variable
# gpio_output_map = {}
#kwargs is a Python set that contains the address of your device and the output map to be passed to the object for initialization.
#since I am using the default address and have no outputs I don't need to pass this variable
# kwargs = {'address': 0x20, 'gpio_output_map': gpio_output_map}
#create the MCP23008 object from the MCP23008 library
#the object requires that you pass it the bus object so that it can communicate and share the bus with other chips if necessary
mcp23008 = mcp23008(smbus)
#by default the inputs are floating. I want to pull up input GPIO 4 so I can hook up a simple switch and read its status.
mcp23008.pull_up_gpio(4)
while True :
#I want to print out the status of GPIO 4. You can set this up in a conditional logic so it can execute whatever you'd like on change.
gpio_4_status = mcp23008.get_single_gpio_status(4)
print gpio_4_status
#if the status of GPIO 4 is high then I want to print out the status of all GPIOs
if(gpio_4_status):
#print out the byte that indicates the status of the GPIOs.
#255 means all GPIOs are high. 0 means all GPIOs are low.
#if only GPIO 0 is high then the value will be 1, if only GPIO 3 is high the value will be 8
#the bits in the byte would look like 00000001 (GPIO 0 is 1 aka high) and 00001000 (GPIO 0 is 1 aka high)
print mcp23008.get_all_gpio_status()