Wireless
join_ttn.py
,send_ttn.py
的結果wireless-lab3-groupxx.docx
,並上傳到LMS作業區。sensor有三個腳位,請對照GPIO腳位圖
+
: 接3.3V (#1)out
: 接GPIO4 (#7)-
: GND (#9)
Learn More →
之後在Raspberry Pi上安裝DHT所需要的Library
$ sudo pip3 install Adafruit_DHT
使用下載Adafruit_Python_DHT程式碼
$ git clone https://github.com/adafruit/Adafruit_Python_DHT
測試
$ cd Adafruit_Python_DHT/examples
$ python3 AdafruitDHT.py 22 4
Learn More →
請想辦法與Lab2(OTAA)結合,可以查看Adafruit_DHT.py的程式,把一部分的程式移植到Lab2的程式裡
import sys
import Adafruit_DHT
# Parse command line parameters.
sensor_args = { '11': Adafruit_DHT.DHT11,
'22': Adafruit_DHT.DHT22,
'2302': Adafruit_DHT.AM2302 }
if len(sys.argv) == 3 and sys.argv[1] in sensor_args:
sensor = sensor_args[sys.argv[1]]
pin = sys.argv[2]
else:
print('Usage: sudo ./Adafruit_DHT.py [11|22|2302] <GPIO pin number>')
print('Example: sudo ./Adafruit_DHT.py 2302 4 - Read from an AM2302 connected to GPIO pin #4')
sys.exit(1)
# Try to grab a sensor reading. Use the read_retry method which will retry up
# to 15 times to get a sensor reading (waiting 2 seconds between each retry).
# 主要偵測的function
humidity, temperature = Adafruit_DHT.read_retry(sensor, pin)
# Un-comment the line below to convert the temperature to Fahrenheit.
# temperature = temperature * 9/5.0 + 32
# Note that sometimes you won't get a reading and
# the results will be null (because Linux can't
# guarantee the timing of calls to read the sensor).
# If this happens try again!
if humidity is not None and temperature is not None:
print('Temp={0:0.1f}* Humidity={1:0.1f}%'.format(temperature, humidity))
else:
print('Failed to get reading. Try again!')
sys.exit(1)
:star: 實驗結果 跑完OTAA傳輸模式的流程,分別截圖join_ttn.py,send_ttn.py的結果 將send_ttn.py的message改成:Wireless Lab2 傳輸資料後用MQTT查看,並用base64解密截圖。 以組為單位(一個人上傳即可),將這些截圖結果貼成一個word檔案,命名為wireless-lab2-groupxx.docx,並上傳到LMS作業區。 What is OTAA? OTAA模式送出 (join_ttn.py) 這份程式主要修改來自 jeroennijhof 的程式碼
Mar 19, 2023硬體版本 : Raspberry Pi 3 Model B+ 作業系統 : Raspbian 2018-06-27 LoRa : SX1276晶片 實驗用具 Rasbperry Pi 3B+ LoRa SX1276晶片
Mar 6, 2022實驗環境 硬體版本 : Raspberry Pi 3 Model B+ 作業系統 : Raspbian 2018-06-27 LoRa : SX1276晶片 實驗目標 使用ABP模式傳輸資料 並用MQTT取得資料後解碼
Feb 21, 2022若是在虛擬機上安裝,至少請給25G的空間,不然有可能會裝到一半沒空間。 安裝Bake Bake是可以簡化ns3下載及安裝的工具,並且能夠擴充模組成sns3。 先把Bake clone下來: $ git clone https://gitlab.com/nsnam/bake 查看目前的位置:
Jan 7, 2021or
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