def meas_temp(senseID,sense_type):
# 12 bit number in range 0-4095
adcval=pi_adc.readadc(senseID, SPICLK, SPIMOSI, SPIMISO, SPICS)
#print adcval
if sense_type==36:
temperature=25.0+((3.3*(adcval/4095.0))-0.75)/(0.01) # 750mV at 25degC with 10mV/degC
else:
temperature=25.0+((3.3*(adcval/4095.0))-0.5)/(0.02) # 500mV at 25degC with 20mV/degC
return temperature
cpu_key = home_key
cpu_ID = 82576
GPIO.setmode(GPIO.BCM)
# setup the ADC
pi_adc.adc_setup(SPICLK,SPIMISO,SPIMOSI,SPICS)
# setup the Phototransistor input
photo_setup(PHOTOIN)
while adcmode:
if adcmode>0:
adcval=pi_adc.readadc(adcmode-1, SPICLK, SPIMOSI, SPIMISO, SPICS)
time.sleep(avelen)
temperature36=25.0+((3.3*(adcval/4095.0))-0.75)/(0.01) # 750mV at 25degC with 10mV/degC
temperature37=25.0+((3.3*(adcval/4095.0))-0.5)/(0.02) # 500mV at 25degC with 20mV/degC
print "adcmode on channel {:d} : {:d} {:2.2f}degC {:2.2f}degC".format(adcmode,adcval,temperature36,temperature37)
else:
adcval=0
for i in range(1000):
#adcval+=pi_adc.readadc(-adcmode-1, SPICLK, SPIMOSI, SPIMISO, SPICS)
adcval+=meastemp(-adcmode-1,36)
print str(datetime.datetime.utcnow())+ " " + str(adcval/1000.0)
while True:
# once an hour update the stream
