Revision 317c2b10
Added by dsorber about 13 years ago
| 525.743/code/bfcslib/sensor.py | ||
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class Sensor(object):
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""" Container abstraction for a 'sensor' """
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def __init__(self, led, temp_sensor_function):
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self.led = led
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self.temp_sensor_function = temp_sensor_function
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def get_temp(self):
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return round(self.temp_sensor_function())
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# When the "temp" attribute is accessed call the temp sensor function
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# which will return the desired temperature reading
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temp = property(get_temp)
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| 525.743/code/rpi_client.py | ||
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import datetime
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import itertools
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import sys
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import time
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import RPIO
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from bfcslib.relay import Relay
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from bfcslib.sensor import Sensor
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from bfcslib.seven_seg import SevenSegmentDisplay
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from bfcslib.status_led import LED
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from bfcslib.tmp512 import TMP512
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# Global variables
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NUM_SENSORS = 4
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sensor_iterator = itertools.cycle(range(0, NUM_SENSORS))
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CURRENT_IDX = sensor_iterator.next()
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SENSORS = None
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THRESHOLD_TEMP = 82
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def button_isr(gpio_id, val):
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global CURRENT_IDX
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global SENSORS
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# Turn off previous LED
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SENSORS[CURRENT_IDX]['led'].off()
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# Turn off previous sensor indicator LED
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SENSORS[CURRENT_IDX].led.off()
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# Update current index
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# print 'CURRENT_IDX: %s' % CURRENT_IDX
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CURRENT_IDX = sensor_iterator.next()
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# Turn on new LED
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SENSORS[CURRENT_IDX]['led'].on()
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# Turn on new sensor indicator LED
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SENSORS[CURRENT_IDX].led.on()
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def main():
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global CURRENT_IDX
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| ... | ... | |
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tmp512_1 = TMP512(0x5d)
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tmp512_2 = TMP512(0x5c)
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SENSORS = [{'led': sensor1_led, 'temp': tmp512_1.temp_sensor2},
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{'led': sensor2_led, 'temp': tmp512_1.temp_sensor1},
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{'led': sensor3_led, 'temp': tmp512_2.temp_sensor2},
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{'led': sensor4_led, 'temp': tmp512_2.temp_sensor1}]
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# Create the sensor objects to encapsulate a status LED and temperature
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# sensor channel
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sensor1 = Sensor(sensor1_led, tmp512_1.temp_sensor2)
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sensor2 = Sensor(sensor2_led, tmp512_1.temp_sensor1)
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sensor3 = Sensor(sensor3_led, tmp512_2.temp_sensor2)
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sensor4 = Sensor(sensor4_led, tmp512_2.temp_sensor1)
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# Create the global list of all the sensor objects
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SENSORS = [sensor1, sensor2, sensor3, sensor4]
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# Turn on initial sensor LED
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SENSORS[CURRENT_IDX]['led'].on()
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SENSORS[CURRENT_IDX].led.on()
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# Setup 7 seg display
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ssdisplay = SevenSegmentDisplay()
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ss_display = SevenSegmentDisplay()
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# Setup relay
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relay = Relay()
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relay_state = False
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# Setup pushbutton
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# Use the BCM addressing scheme
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# Use the BCM addressing scheme, set GPIO 22 as input
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RPIO.setmode(RPIO.BCM)
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# Setup input
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RPIO.setup(22, RPIO.IN)
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# Setup switch interrupt with debounce
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| ... | ... | |
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# Main loop
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while True:
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temps = []
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now = datetime.datetime.now()
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# Iterate over all temperature sensors and read their temp
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for idx in xrange(NUM_SENSORS):
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temp = SENSORS[idx]['temp']()
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# Get the current temperature reading
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temp = SENSORS[idx].temp
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temps.append(temp)
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# Display the currently selected temp sensor value
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if idx == CURRENT_IDX:
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ssdisplay.display_number(temp)
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ss_display.display_number(temp)
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# Bit 'o debug information
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print now.strftime('%m/%d/%Y %H:%M:%S')
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for idx in xrange(NUM_SENSORS):
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print '\t Sensor %d: %d' % (idx + 1, temps[idx])
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# Sort all the temperature readings for easier manipulation
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temps.sort(reverse=True)
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if relay_state:
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# Relay is on, decide if we need to turn it off
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if temps[0] < THRESHOLD_TEMP and \
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temps[1] < THRESHOLD_TEMP and \
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temps[2] < THRESHOLD_TEMP and \
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temps[3] < THRESHOLD_TEMP:
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relay_state = False
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relay.off()
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else:
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# Relay is off, decide if we need to turn it on
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if temps[0] > THRESHOLD_TEMP and temps[1] > THRESHOLD_TEMP:
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relay_state = True
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relay.on()
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# Read once ever second
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time.sleep(1)
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if __name__ == '__main__':
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Adding work to rpi_client from this weekend.