changed 5 years ago  
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物聯網 Lab2

物聯網目錄：

感測器資料

達成目標

基本功能：

  • 加速度儀資料
  • 姿勢儀資料
  • 位置資料

版面設計

Image Not Showing Possible Reasons
  • The image file may be corrupted
  • The server hosting the image is unavailable
  • The image path is incorrect
  • The image format is not supported
Learn More →
Image Not Showing Possible Reasons
  • The image file may be corrupted
  • The server hosting the image is unavailable
  • The image path is incorrect
  • The image format is not supported
Learn More →

程式設計












if btn_get.Click:
    lab_accel.Text = "Accelerometer:\n" +\
                    "X: " + AccelerometerSensor1.XAccel +\
                    "\nY: " + AccelerometerSensor1.YAccel +\
                    "\nZ: " + AccelerometerSensor1.ZAccel
    lab_ori.Text = "Orientation:\n" +\
                    "Roll: " + OrientationSensor1.Roll +\
                    "\nPitch: " + AccelerometerSensor1.Pitch +\
                    "\nAzimuth: " + AccelerometerSensor1.Azimuth
    lab_loc.Text = "Location:\n" +\
                    "[" + LocationSensor1.Latitude + "," + LocationSensor1.Longitude + "]"

實際畫面

顯示位置於 Google

達成目標

基本功能：

  • 傳送自己位置給 server (POST)
  • 顯示自己位置於 Google
  • 獲取 server 位置 (GET)
  • 顯示 server 位置於 Google

額外功能：

  • 顯示 server 回傳的經緯度

版面設計

Image Not Showing Possible Reasons
  • The image file may be corrupted
  • The server hosting the image is unavailable
  • The image path is incorrect
  • The image format is not supported
Learn More →
Image Not Showing Possible Reasons
  • The image file may be corrupted
  • The server hosting the image is unavailable
  • The image path is incorrect
  • The image format is not supported
Learn More →

與 Lab1 類似，這邊設定 web_send 端點為 /MY_LOC， web_get 端點為 /SERVER_LOC，前者負責 POST，後者負責 GET

http://電腦 IPv4:1880/MY_LOC
http://電腦 IPv4:1880/SERVER_LOC

程式設計

多屬性需要 & 來分隔，在此為兩個屬性 lat=xxx&lon=xxx
顯示地圖的部分可以參考 android intent，範例是使用經緯度搜尋，這邊使用經緯度加上縮放
獲取 server 位置需要 split 得到陣列，再分別記錄起來

須注意 list 是從 1 開始而非 0




































float Lat_M = 0
float Lon_M = 0
float Lat_S = 0
float Lon_S = 0
string temp = ""

if btn_me.Click:
    Lat_M = LocationSensor1.Latitude
    Lon_M = LocationSensor1.Longitude
    lab_loc.Text = "Me: " + Lat_M + ", " + Lon_M
    web_send.PostText(text=("lat="+Lat_M+"&lon="+Lon_M))

if web_send.GotText:
    lab_loc.Text = "My Location: " + responseContent
    lab_info.Text = responseCode

if btn_showM.Clock:
    ActivityStarter1.Action = "android.intent.action.VIEW"
    ActivityStarter1.DataUri = "geo:" + Lat_M + "," + Lon_M + "?z=zoom"
    ActivityStarter1.StartActivity()

if btn_server.Click:
    web_get.Get()

if web_get.GotText:
    lab_loc.Text = "Server's Location: " + responseContent
    lab_info.Text = responseCode
    temp = split(responseContent, ",")
    Lat_S = temp[1]
    Lon_S = temp[2]

if btn_showM.Clock:
    ActivityStarter1.Action = "android.intent.action.VIEW"
    ActivityStarter1.DataUri = "geo:" + Lat_S + "," + Lon_S + "?z=zoom"
    ActivityStarter1.StartActivity()

傳送給 server 與顯示自己位置：

獲取 server 位置與顯示：

Node-RED 拉出以下所示

  • http-in：分別為 POST 與 GET，也分別對應 /MY_LOC 與 SERVER_LOC
  • function 的 MY_LOC：單純把傳給 server 的內容再打包回來
msg.payload = msg.payload.lat + ', ' + msg.payload.lon;
return msg;
  • function 的 SERVER_LOC：固定回傳一個定點，在此設計為 25.040288, 121.512160 (總統府)

實際畫面

自己位置

server 位置

Select a repo