def sample(self):
util.set_gpio(self.soil, 'value', '1')
readings = []
for i in xrange(10):
time.sleep(0.1)
value = util.read_sys(self.ain)
if value:
readings.append(value)
util.set_gpio(self.soil, 'value', '0')
if len(readings) > 0:
reading = max(readings)
self.history.append(reading)
return reading, max(self.history)
else:
return None, max(self.history)
def main_loop(args):
log = util.Logfile(args.output)
gft = fusiontables.GoogleAPI(args)
plant_a = Plant(util.SOLENOID_A, util.SOIL_A, util.AIN_A, args.hsize)
plant_b = Plant(util.SOLENOID_B, util.SOIL_B, util.AIN_B, args.hsize)
while True:
# Read humidity, temperature, and luminosity.
hum, temp = util.read_hum_temp()
lux = util.read_sys('/sys/bus/iio/devices/iio:device0/in_intensity_both_raw')
# Read soil moisture.
a_raw, a_max = plant_a.sample()
time.sleep(0.5)
b_raw, b_max = plant_b.sample()
now = time.localtime()
log.check_rotate(now)
log.write(now, '%.2f %.2f %d' % (hum, temp, lux))
log.write(now, 'A: %d (max %d), B: %d (max %d)\n' % (a_raw, a_max,
b_raw, b_max))
try:
gft.push_update(now, hum, temp, lux)
except Exception as e:
print str(e)
log.write(now, 'GFTERROR: %s' % str(e))
if a_max < args.water_threshold:
plant_a.water(args.duration, log)
if b_max < args.water_threshold:
plant_b.water(args.duration, log)
# Open solenoid(s), if necessary. Add hysteresis? Check moisture again?
time.sleep(args.interval)
