International Space Station tracker

1#include <Adafruit_SSD1306.h>
2#include <splash.h>
3#include <Adafruit_GrayOLED.h>
4#include  <gfxfont.h>
5#include <Adafruit_GFX.h>
6#include <Adafruit_SPITFT.h>
7#include  <Adafruit_SPITFT_Macros.h>
8#include <SPI.h>
9#include <Wire.h>
10
11#define  SCREEN_WIDTH 128
12#define SCREEN_HEIGHT 64
13
14#define OLED_RESET -1
15#define  SCREEN_ADDRESS 0x3C
16Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire,  OLED_RESET);
17
18#include "USE_ESP8266.h"
19#include <TimeLib.h>
20char server  [] = "api.open-notify.org";
21void digitalClockDisplay();
22
23void setup ()
24{
25display.begin(SSD1306_SWITCHCAPVCC,  0X3C);
26display.clearDisplay ();
27
28  Serial.begin(115200);
29  if (!configureNetwork())  //start the network
30  {
31    Serial.println("Failed to configure the network");
32    while(1)
33    {
34      delay(0); //halt; ESP8266 does not like infinity  loop without a delay
35    }
36   }
37int ret = client.connect(server, 80);
38if  (ret == 1)
39{
40  Serial.println("Connected");
41  client.println("GET /iss-now.json  HTTP/1.0"); //the http request
42  client.print("Host: "); client.println(server);
43  client.println("Connection: close");
44  client.println();
45}
46else
47{
48  Serial.println("Connection failed, error was: ");
49  Serial.print(ret, DEC);
50  while(1)
51  {
52    delay(0); //halt; esp8266 does not like infinite loop without  a delay
53  }
54 }
55}
56
57char timestampMarker[] = "\\"timestamp\\":";
58char  posMarker[] = "\\"iss_position\\":";
59
60void loop ()
61{
62  if (client.available())
63  {
64    String id = client.readStringUntil('"');
65    if (id.equals("timestamp"))  //start of timestamp
66    {
67      if (client.find(':')) //a ":" follows each  identifier
68      {
69      unsigned long timestamp = client.parseInt();
70      setTime(timestamp);
71      digitalClockDisplay();
72      
73      }
74      else
75      {
76        Serial.println("failed to parse timestamp.");
77      }
78    }
79    if (id.equals("iss_position")) //start of position data
80    {
81      if (client.find(':')) 
82      {
83       display.setTextSize(1);
84  display.setTextColor(WHITE);
85 
86  while(client.peek () != '}' && client.find('"'))  {
87      String id = client.readStringUntil ('"');
88      float val = client.parseFloat  ();
89      client.find ('"');
90      Serial.print(id + ":"); Serial.println(val,  4);
91
92      if(id == "longitude"){
93         display.setCursor(0,20);
94         display.print("longitude:");
95         display.setCursor(0,30);
96         display.print(val);
97      }
98      if(id == "latitude"){
99         display.setCursor(0,40);
100         display.print("latitude:");
101         display.setCursor(0,50);
102         display.print(val);
103      }
104  }//end while
105  display.display();
106      }
107      else
108      {
109        Serial.print("Failed to parse position  data.");
110      }
111    }
112  }
113if (!client.connected())
114  {
115    Serial.println();
116    Serial.println("disconnecting.");
117    client.stop();
118    while(1)
119  {
120    delay (0); //halt, esp8266 does not like loop w/o delay
121  }
122 }
123}
124String  padDigits(int digit)
125{
126  String str = String("0") + digit; //put a zero  in front of digit
127  return str.substring(str.length() - 2);
128}
129
130void  digitalClockDisplay ()
131{
132  String datestr = String(year()) + "-" + padDigits(month())  +
133                   "-" + padDigits(day());
134  String timestr = String(hour())  + ":" + padDigits(minute()) +
135                   ":" + padDigits(second());
136  Serial.println(datestr + " " + timestr);
137 
138}