# A easy Gpio library example for the Udoo Neo created by David Smerkous
# The current things this library can do
# digitalWriting/Reading - Soon to come PWM
from neo import Gpio # import Gpio library
from time import sleep # import sleep to wait for blinks
neo = Gpio() #create new Neo object
pinTwo = 2 #pin to use
pinThree = 3
neo.pinMode(pinTwo, neo.OUTPUT)# Use innerbank pin 2 and set it as output either 0 (neo.INPUT) or 1 (neo.OUTPUT)
neo.pinMode(pinThree, neo.INPUT)# Use pin three(innerbank) and read set state to read
#Blink example
for a in range(0, 5): #Do for five times
neo.digitalWrite(pinTwo,neo.HIGH) #write high value to pin
sleep(1)# wait one second
neo.digitalWrite(pinTwo,neo.LOW) #write low value to pin
sleep(1)# wait one second
#Read pin
print "Current pin("+str(pinThree)+") state is: "+str(neo.digitalRead(pinThree)) # read current value of pinThree(To succesfully read a pin it must be either pulled to ground or 3.3v, a non connected wire will not work)
def getSamsungCode(self):
# Learning mode feedback led
pinLED = 26
# IR receiver
pinIR = 25
command_length_samasung = 65
neo = Gpio()
neo.pinMode(pinIR, neo.INPUT)
neo.pinMode(pinLED, neo.OUTPUT)
neo.digitalWrite(pinLED, neo.HIGH)
sample_number = 0
# Compute the average result after MAX_SAMPLES
bits_sum = [0] * 32
MAX_SAMPLES = 3
while True:
# stop the receiver after MAX_SAMPLES
if sample_number == MAX_SAMPLES:
for x in range(0, len(bits_sum)):
bits_sum[x] = bits_sum[x] / (MAX_SAMPLES * 1.0)
break
value = 1
# Loop until get IR data
time_to_live = 45000
while value and time_to_live:
value = neo.digitalRead(pinIR)
time_to_live -= 1
if time_to_live == 0:
neo.digitalWrite(pinLED, neo.LOW)
return ""
# Grab the start time of the command
startTime = datetime.now()
# Used to buffer the command pulses
command = []
# The end of the "command" happens when we read more than
# a certain number of 1s (1 is off for the IR receiver)
numOnes = 0
# Used to keep track of transitions from 1 to 0
previousVal = 0
while True:
if value != previousVal:
# The value has changed, so calculate the length of this run
now = datetime.now()
pulseLength = now - startTime
startTime = now
command.append((previousVal, pulseLength.microseconds))
# print str(previousVal) + " " + str(pulseLength.microseconds)
#if len(command) == command_length_samasung:
# break
if value:
numOnes = numOnes + 1
else:
numOnes = 0
if numOnes > 100:
break
#if numOnes > 300:
# break
previousVal = value
value = neo.digitalRead(pinIR)
# A Sony IR signal starts with 2400 microseconds on and 600 microseconds off;
# that's the first wide pulse. A "1" bit is transmitted with 1200 microseconds on and 600 microseconds off,
# while a "0" bit is transmitted with 600 microseconds on and 600 microseconds off.
# (This encoding is also called SIRC or SIRCS encoding.)
# Chop the header of the received IR signal
# print command
command = command[2:]
command = command[:64]
#print "Command length: " + str(len(command))
# Establish the payload of the received IR signal
binaryString = "".join(
map(lambda x: "1" if x[1] > 1080 else "0",
filter(lambda x: x[0] == 1, command)))
# The length of the payload, according to SONY protocol is 12 bits; skip otherwise
#print len(binaryString)
if len(binaryString) != 32:
continue
#print "Good length!"
sample_number = sample_number + 1
binaryString = map(int, binaryString)
bits_sum = [sum(x) for x in zip(bits_sum, binaryString)]
# compute the IR code based on MAX_SAMPLES
result = ""
for x in bits_sum:
if x < 0.5:
result += '0'
else:
result += '1'
neo.digitalWrite(pinLED, neo.LOW)
print result
return result
def getCode(self):
# Learning mode feedback led
pinLED = 26
# IR receiver
pinIR = 25
neo = Gpio()
neo.pinMode(pinIR, neo.INPUT)
neo.pinMode(pinLED, neo.OUTPUT)
neo.digitalWrite(pinLED, neo.HIGH)
# Compute the average result after MAX_SAMPLES
gap_number = 0
MAX_GAPS = 3
GAP_TIME = 20000
value = 1
time_to_live = 45000
while value and time_to_live:
value = neo.digitalRead(pinIR)
time_to_live -= 1
if time_to_live == 0:
neo.digitalWrite(pinLED, neo.LOW)
return ""
# Grab the start time of the command
startTime = datetime.now()
# Used to buffer the command pulses
command = []
# Used to keep track of transitions from 1 to 0
previousVal = 0
while True:
if value != previousVal:
# The value has changed, so calculate the length of this run
now = datetime.now()
pulseLength = now - startTime
startTime = now
if pulseLength.microseconds > GAP_TIME:
gap_number = gap_number + 1
if gap_number == MAX_GAPS:
break
command.append((previousVal, pulseLength.microseconds))
previousVal = value
value = neo.digitalRead(pinIR)
neo.digitalWrite(pinLED, neo.LOW)
result = ""
for (i, j) in command:
result = result + " " + str(j)
#result = result.replace(",", "")
result = result[1:]
print result
return result
