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import time
import RPi.GPIO as GPIO
GPIO.setmode(GPIO.BCM)
PIN_CLK = 3 #2
PIN_DAT = 2 #3
PIN_CS = 4
delay = 0.0000005
# pin setup done here
try:
GPIO.setup(PIN_CLK,GPIO.OUT)
GPIO.setup(PIN_DATA,GPIO.IN)
GPIO.setup(PIN_CS,GPIO.OUT)
GPIO.output(PIN_CS,1)
GPIO.output(PIN_CLK,1)
except:
print "ERROR. Unable to setup the configuration requested"
#wait some time to start
time.sleep(0.5)
print "GPIO configuration enabled"
def clockup():
GPIO.output(PIN_CLK,1)
def clockdown():
GPIO.output(PIN_CLK,0)
def readpos():
GPIO.output(PIN_CS,0) #pulls low to start
time.sleep(delay*2)
data = [0]
clockdown()
for i in range(0,10); #bitcount):
clockup() #375 ns between each
data[i]<<=1
data[i]|=GPIO.input(PIN_DATA)
clockdown()
GPIO.output(PIN_CS,1) #pull high after finish
return data
try:
while(1):
print readpos()
time.sleep(0.001)
#break
finally:
print "cleaning up GPIO"
GPIO.cleanup()
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