def back(): gpio.output(Trigger_Fb,0) # Set Trigger LOW time.sleep(0.5) gpio.output(Trigger_Fb,1) time.sleep(0.00001) # 10uS pulse gpio.output(Trigger_Fb,0) start=time.time() while gpio.input(Echo_Fb)==0: start=time.time() while gpio.input(Echo_Fb)==1: stop=time.time() elapsed = stop-start distance_Fb = elapsed * 34000 distance_Fb=distance_Fb/2 distance_Fb=round(distance_Fb,0) return(distance_Fb) print(distance_Fb)
def back():
gpio.output(Trigger_Fb, 0) # Set Trigger LOW
time.sleep(0.5)
gpio.output(Trigger_Fb, 1)
time.sleep(0.00001) # 10uS pulse
gpio.output(Trigger_Fb, 0)
start = time.time()
while gpio.input(Echo_Fb) == 0:
start = time.time()
while gpio.input(Echo_Fb) == 1:
stop = time.time()
elapsed = stop - start
distance_Fb = elapsed * 34000
distance_Fb = distance_Fb / 2
distance_Fb = round(distance_Fb, 0)
return (distance_Fb)
print(distance_Fb)
def readadc(channelNumber, clockPin, kitoutputPin, kitInputPin, chipSelectPin):
# First of all we only have eight channels from 0 to 7, other values are not accepted, sorry!
if (channelNumber > 7) or (channelNumber < 0):
print("channel number should be between 0 and 7")
return -1
# chipSelectPin should be brought high and back low to initiate communication
gpio.output(chipSelectPin, gpio.HIGH)
gpio.output(clockPin, gpio.LOW)
gpio.output(chipSelectPin, gpio.LOW)
# configuration bits (configBits) sequence is constructed as follow :
# start bit + single-ended bit + channel number (3 bits) + 000 (not sent; see below)
# Example : let's say I am using channel number 3 then configBits = start bit (1) +
# single-ended bit (1) + channel number (011) + 000 = 11011000
# another way to find the same value is channelNumber channelNumber (00000011) LOGICAL OR 0x18 (00011000)
# SHIFTED three bits to left = 11011000
configBits = channelNumber
configBits |= 0x18
configBits <<= 3
# send configurationn bits to the mcp3008 module
# every time the MSB is extracted then sent
for i in range(5):
if configBits & 0x80:
gpio.output(kitoutputPin, gpio.HIGH)
else:
gpio.output(kitoutputPin, gpio.LOW)
configBits <<= 1
# clock signal
gpio.output(clockPin, gpio.HIGH)
gpio.output(clockPin, gpio.LOW)
# reading bits from the mcp3008 module channel, the module sends 10 bit
# one idle bit is sent before and another one after the data, a total of twelve bits is sent
readInput = 0
for index in range(10):
# clock
gpio.output(clockPin, gpio.HIGH)
gpio.output(clockPin, gpio.LOW)
readInput <<= 1
if gpio.input(kitInputPin):
readInput |= 0x1
# disable the mcp3008 module
gpio.output(chipSelectPin, gpio.HIGH)
return readInput
def DHT11Measures():
# --------------------------------------
# initialisation
# refer to the tutorial for more information about the
# GPIO pins in the A13-SOM-LTE
sensor = port.PE11
gpio.init()
# --------------------------------------
# trigger measure
gpio.setcfg(sensor, gpio.OUTPUT)
gpio.output(sensor, 1)
time.sleep(0.025)
gpio.output(sensor, 0)
time.sleep(0.02)
# ----------------------------------------
# grab data
gpio.setcfg(sensor, gpio.INPUT)
data = []
bit_count = 0
tmp = 0
count = 0
HumidityBit = "0"
TemperatureBit = ""
crc = ""
threshold = 9
for i in range(0, 1500):
data.append(gpio.input(sensor))
# print(data)
# --------------------------------------------
# treat data to extract the values
def bin2dec(string_num):
return str(int(string_num, 2))
try:
# You may need to add this to your code, as normally the sensor
# starts by sending a short sequence of 0s then another short
# sequence of 1s to show it is available before sending the
# metrics data, as I could not see this in my data I just did not
# use this code
# Code
# if data[count] == 0:
# while data[count] == 0:
# count += 1
# while data[count] == 1:
# tmp = 1
# count += 1
# End of code
# The first bit of data being normally truncated and as it is a zero for sure
# (humidity is always under 100%) then we directly put a 0 in HumidityBit and we read
# the next 31 bits which are structured as follows :
# Humidity (7bits) - 0 byte - Temperature (8bits) - 0
for i in range(0, 31):
bit_count = 0
while data[count] == 0:
tmp = 1
count += 1
while data[count] == 1:
bit_count += 1
count += 1
if bit_count > threshold:
if 0 <= i < 7:
HumidityBit += "1"
if 15 <= i < 23:
TemperatureBit += "1"
else:
if 0 <= i < 7:
HumidityBit += "0"
if 15 <= i < 23:
TemperatureBit += "0"
except Exception as e:
print(e)
print("A problem occurred during data gathering")
exit(0)
# the next 8 bits encode CRC which is equal to the sum of
# the temperature value and the humidity value
try:
for i in range(0, 8):
bit_count = 0
while data[count] == 0:
tmp = 1
count += 1
while data[count] == 1:
bit_count += 1
count += 1
if bit_count > threshold:
crc += "1"
else:
crc += "0"
except Exception as e:
print(e)
print("A problem occurred during CRC calculation")
exit(0)
Humidity = bin2dec(HumidityBit)
Temperature = bin2dec(TemperatureBit)
# --------------------------------------
# Check CRC is correct then print results
if int(Humidity) + int(Temperature) - int(bin2dec(crc)) == 0:
return ("Humidity = " + Humidity + "%"), ("Temperature = " + Temperature + "C")
else:
print("Wrong data, incorrect CRC")
return None
from pyA13.gpio import port
__author__ = "Stefan Mavrodiev"
__copyright__ = "Copyright 2014, Olimex LTD"
__credits__ = ["Stefan Mavrodiev"]
__license__ = "GPL"
__version__ = "2.0"
__maintainer__ = __author__
__email__ = "*****@*****.**"
led = connector.gpio0p0 # This is the same as port.PH2
button = connector.gpio3p40
"""Init gpio module"""
gpio.init()
"""Set directions"""
gpio.setcfg(led, gpio.OUTPUT)
gpio.setcfg(button, gpio.INPUT)
"""Enable pullup resistor"""
gpio.pullup(button, gpio.PULLUP)
#gpio.pullup(button, gpio.PULLDOWN) # Optionally you can use pull-down resistor
try:
print("Press CTRL+C to exit")
while True:
state = gpio.input(button) # Read button state
"""Since we use pull-up the logic will be inverted"""
gpio.output(led, not state)
except KeyboardInterrupt:
print("Goodbye.")
__credits__ = ["Stefan Mavrodiev"]
__license__ = "GPL"
__version__ = "2.0"
__maintainer__ = __author__
__email__ = "*****@*****.**"
led = connector.gpio0p0 # This is the same as port.PH2
button = connector.gpio3p40
"""Init gpio module"""
gpio.init()
"""Set directions"""
gpio.setcfg(led, gpio.OUTPUT)
gpio.setcfg(button, gpio.INPUT)
"""Enable pullup resistor"""
gpio.pullup(button, gpio.PULLUP)
#gpio.pullup(button, gpio.PULLDOWN) # Optionally you can use pull-down resistor
try:
print ("Press CTRL+C to exit")
while True:
state = gpio.input(button) # Read button state
"""Since we use pull-up the logic will be inverted"""
gpio.output(led, not state)
except KeyboardInterrupt:
print ("Goodbye.")