Created
August 24, 2014 12:56
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Gets temperature from USB Temper, show it by LED lighting of BerryClip on Raspberry Pi and log it into a file.
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#!/usr/bin/python | |
# coding: utf-8 | |
import RPi.GPIO as GPIO | |
import datetime | |
import logging | |
import usb | |
from temperusb import TemperDevice | |
GREEN_LED_1 = 4 | |
GREEN_LED_2 = 17 | |
YELLOW_LED_1 = 22 | |
YELLOW_LED_2 = 10 | |
RED_LED_1 = 9 | |
RED_LED_2 = 11 | |
MIN_TEMP = 16 | |
MAX_TEMP = 28 | |
LEDS = [ | |
GREEN_LED_1, GREEN_LED_2, YELLOW_LED_1, YELLOW_LED_2, RED_LED_1, RED_LED_2 | |
] | |
VENDOR_ID = 0x0c45 | |
PRODUCT_ID = 0x7401 | |
logging.basicConfig( | |
format='%(message)s', | |
filename='temper.log', | |
level=logging.INFO, | |
) | |
logger = logging.getLogger('temperature') | |
dev = usb.core.find(idVendor=VENDOR_ID, idProduct=PRODUCT_ID) | |
TDev = TemperDevice(dev) | |
def init(): | |
GPIO.setmode(GPIO.BCM) | |
for led in LEDS: | |
GPIO.setup(led, GPIO.OUT) | |
GPIO.output(led, False) | |
def show_temperature(): | |
old_active_leds = 0 | |
old_temp = 0 | |
while True: | |
temp = round(TDev.get_temperature(), 1) | |
active_leds = int( | |
(temp - MIN_TEMP) / ((MAX_TEMP - MIN_TEMP) / len(LEDS)) | |
) | |
if active_leds != old_active_leds: | |
for led in LEDS: | |
GPIO.output(led, False) | |
for led in LEDS[:active_leds]: | |
GPIO.output(led, True) | |
if temp != old_temp: | |
time_stop = datetime.datetime.now() | |
print '%s: %s ºC (Active LEDS: %s)' % ( | |
time_stop.strftime('%Y-%m-%d %H:%M:%S'), temp, active_leds | |
) | |
logger.info( | |
'%s;%s;%s' % ( | |
time_stop.strftime('%Y-%m-%d %H:%M:%S'), temp, active_leds | |
) | |
) | |
old_active_leds = active_leds | |
old_temp = temp | |
if __name__ == '__main__': | |
try: | |
init() | |
show_temperature() | |
except KeyboardInterrupt: | |
GPIO.cleanup() |
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