def Interrupt(channel):
global DI
print("Interrupt!")
#The list of for the new values
DI_new = [0,0,0,0,0,0,0,0]
#read all inputs sequentially
for i in range (1,8):
DI_new[i-1]=i2ciotools.readDigitalInputPort(I2C_PORT, DI_MODULE_1_ADDR, i)
#Now check if the new value equals the old value
#if it does... nothing changes
for i in range (0,7):
if (DI[i] != DI_new[i]):
#If old doesn't match new value... that PIN changed
print("PIN "+str(i)+" changed")
#print out a list of the current state of all inputs
for i in range(0,7):
sys.stdout.write(str(DI[i]))
sys.stdout.write(" ")
print("")
print("")
#Don't forget that step... new=old
DI=DI_new
print ("Input is NOT active")
except:
print ("ERROR! The DI module isn't there. Check the wires and the address")
#OK, enough with the exception catching for each statement. If you have just DI or DO
#the following code block won't execute correctly as the first time a non-existing module
#is used the code will fail and go to the except statement
try:
#Set the output PIN/Port 1 to 0 (inactive)
#Use the slightly different writeDigitalOutputPort to do that...
i2ciotools.writeDigitalOutputPort(I2C_PORT, DO_MODULE_1_ADDR, 1, 0)
#Read using the readDigitalInputPort
if (i2ciotools.readDigitalInputPort(I2C_PORT, DI_MODULE_1_ADDR,1)==1):
print ("Input is active")
else:
print ("Input is NOT active")
#Let's go hardcore and send the byte directly (note the negated byte)
#Set the output PIN/Port 1 to 1 (active)
i2ciotools.writeDigitalOutput(I2C_PORT, DO_MODULE_1_ADDR, 0xFE)
if (i2ciotools.readDigitalInput(I2C_PORT, DI_MODULE_1_ADDR)==0xFE):
print ("Input is active")
else:
print ("Input is NOT active")
#Set the output PIN/Port 1 to 0 (inactive)
#Back to the shortest notation...