第35讲：智能温度测量系统（综合实验）c
python
import RPi.GPIO as GPIO
import importlib
import time
import sys
# BOARD pin numbering
LedR = 11
LedG = 12
LedB = 13
Buzz = 15
#ds18b20 = '28-031467805fff'
#location = '/sys/bus/w1/devices/' + ds18b20 + '/w1_slave'
joystick = importlib.import_module('15_joystick_PS2')
ds18b20 = importlib.import_module('26_ds18b20')
beep = importlib.import_module('10_active_buzzer')
rgb = importlib.import_module('02_rgb_led')
joystick.setup()
ds18b20.setup()
beep.setup(Buzz)
rgb.setup(LedR, LedG, LedB)
color = {'Red':0xFF0000, 'Green':0x00FF00, 'Blue':0x0000FF}
def setup():
global lowl, highl
lowl = 29
highl = 31
def edge():
global lowl, highl
temp = joystick.direction()
if temp == 'Pressed':
destroy()
quit()
if temp == 'up' and lowl < highl-1:
highl += 1
if temp == 'down' and lowl >= -5:
highl -= 1
if temp == 'right' and highl <= 125:
lowl += 1
if temp == 'left' and lowl < highl-1:
lowl -= 1
def loop():
while True:
edge()
temp = ds18b20.read()
print 'The lower limit of temperature : ', lowl
print 'The upper limit of temperature : ', highl
print 'Current temperature : ', temp
if float(temp) < float(lowl):
rgb.setColor(color['Blue'])
for i in range(0, 3):
beep.beep(0.5)
if temp >= float(lowl) and temp < float(highl):
rgb.setColor(color['Green'])
if temp >= float(highl):
rgb.setColor(color['Red'])
for i in range(0, 3):
beep.beep(0.1)
def destroy():
beep.destroy()
joystick.destroy()
ds18b20.destroy()
rgb.destroy()
GPIO.cleanup()
if __name__ == "__main__":
try:
setup()
loop()
except KeyboardInterrupt:
destroy()
2022-05-27 11:05:39
3KB
1