|
6 | 6 | License: MIT. See license file for more information but you can |
7 | 7 | basically do whatever you want with this code. |
8 | 8 |
|
9 | | - This example shows how to query a Ublox module for its lat/long/altitude. Leave NMEA |
10 | | - parsing behind. Now you can simply ask the module for the datums you want! |
| 9 | + This example shows how to query a Ublox module for its lat/long/altitude. |
| 10 | +
|
| 11 | + Note: Long/lat are large numbers because they are * 10^7. To convert lat/long |
| 12 | + to something google maps understands simply divide the numbers by 1,000,000. We |
| 13 | + do this so that we don't have to use floating point numbers. |
| 14 | +
|
| 15 | + Leave NMEA parsing behind. Now you can simply ask the module for the datums you want! |
11 | 16 |
|
12 | 17 | Feel like supporting open source hardware? |
13 | 18 | Buy a board from SparkFun! |
@@ -36,120 +41,39 @@ void setup() |
36 | 41 |
|
37 | 42 | Wire.begin(); |
38 | 43 |
|
39 | | - myGPS.begin(); //Connect to the Ublox module using Wire port |
40 | | - if (myGPS.isConnected() == false) |
| 44 | + if (myGPS.begin() == false) //Connect to the Ublox module using Wire port |
41 | 45 | { |
42 | 46 | Serial.println(F("Ublox GPS not detected at default I2C address. Please check wiring. Freezing.")); |
43 | 47 | while (1); |
44 | 48 | } |
45 | | - |
46 | | - //Wire.setClock(400000); //Increase I2C clock speed to 400kHz |
47 | | - |
48 | | - /*byte response; |
49 | | - response = myGPS.getVal(VAL_GROUP_I2C, VAL_ID_I2C_ADDRESS, VAL_GROUP_I2C_SIZE, VAL_LAYER_RAM); |
50 | | - Serial.print("res: 0x"); |
51 | | - Serial.println(response, HEX); |
52 | | -
|
53 | | - delay(100); |
54 | | -
|
55 | | - response = myGPS.getVal(VAL_GROUP_I2COUTPROT, VAL_ID_I2COUTPROT_NMEA, VAL_GROUP_I2COUTPROT_SIZE, VAL_LAYER_RAM); |
56 | | - Serial.print("res: 0x"); |
57 | | - Serial.print(response, HEX); |
58 | | - while(1);*/ |
59 | | - |
60 | | - |
61 | | - myGPS.setI2COutput(COM_TYPE_UBX); //Set the I2C port to output UBX only (turn off NMEA noise) |
62 | | - myGPS.setNavigationFrequency(4); //Set output to 4 times a second |
63 | | - |
64 | | - byte rate = myGPS.getNavigationFrequency(); //Get the update rate of this module |
65 | | - Serial.print("Update rate:"); |
66 | | - Serial.println(rate); |
67 | | - |
68 | | - while(1); |
69 | | - |
70 | | - /*long pos = myGPS.getPositionAccuracy(); |
71 | | - Serial.print("pos: "); |
72 | | - Serial.println(pos); |
73 | | -
|
74 | | - byte version = myGPS.getProtocolVersionHigh(); |
75 | | - Serial.print("version: "); |
76 | | - Serial.println(version);*/ |
77 | | - |
78 | | - long latitude = myGPS.getLatitude(1000); |
79 | | - Serial.print("Lat: "); |
80 | | - Serial.print(latitude); |
81 | | - |
82 | | - |
83 | | - long longitude = myGPS.getLongitude(2000); |
84 | | - Serial.print(" Long: "); |
85 | | - Serial.print(longitude); |
86 | | - Serial.print(" (degrees * 10^-7)"); |
87 | | - |
88 | | - long altitude = myGPS.getAltitude(); |
89 | | - Serial.print(" Alt (above mean sea level): "); |
90 | | - Serial.print(altitude); |
91 | | - Serial.print(" (mm)"); |
92 | | - |
93 | | - byte SIV = myGPS.getSIV(); |
94 | | - Serial.print(" SIV: "); |
95 | | - Serial.print(SIV); |
96 | | - |
97 | | - byte fixType = myGPS.getFixType(); |
98 | | - Serial.print(" Fix: "); |
99 | | - Serial.print(fixType); |
100 | | - |
101 | | - byte RTK = myGPS.getCarrierSolutionType(); |
102 | | - Serial.print(" RTK: "); |
103 | | - Serial.print(RTK); |
104 | | - if (RTK == 1) Serial.println("High precision float fix!"); |
105 | | - if (RTK == 2) Serial.println("High precision fix!"); |
106 | | - |
107 | | - long speed = myGPS.getGroundSpeed(); |
108 | | - Serial.print(" Speed: "); |
109 | | - Serial.print(speed); |
110 | | - Serial.print(" (mm/s)"); |
111 | | - |
112 | | - long heading = myGPS.getHeading(); |
113 | | - Serial.print(" Heading: "); |
114 | | - Serial.print(heading); |
115 | | - Serial.print(" (degrees * 10^-5)"); |
116 | | - |
117 | | - int pDOP = myGPS.getPDOP(); |
118 | | - Serial.print(" pDOP: "); |
119 | | - Serial.print(pDOP / 100.0, 2); |
120 | | - |
121 | | - while (1); |
122 | 49 | } |
123 | 50 |
|
124 | 51 | void loop() |
125 | 52 | { |
126 | | - /* myGPS.checkUblox(); //See if new data is available. Process bytes as they come in. |
127 | | -
|
128 | | - delay(250); //Don't pound too hard on the I2C bus |
129 | | -
|
130 | | - //Every other second print the current 3D position accuracy |
131 | | - if (millis() - lastTime > 1000) |
132 | | - { |
133 | | - long latitude = myGPS.getLatitude(); |
134 | | - Serial.print("Lat: "); |
135 | | - Serial.print(latitude); |
136 | | -
|
137 | | - while (1); |
138 | | -
|
139 | | - long longitude = myGPS.getLongitude(); |
140 | | - Serial.print(" Long: "); |
141 | | - Serial.print(longitude); |
142 | | - Serial.print(" (degrees * 10^-7)"); |
143 | | -
|
144 | | - long altitude = myGPS.getAltitude(); |
145 | | - Serial.print(" Alt (above mean sea level): "); |
146 | | - Serial.print(altitude); |
147 | | - Serial.print(" (mm)"); |
148 | | -
|
149 | | - long altitudeEllipsoid = myGPS.getAltitudeEllipsoid(); |
150 | | - Serial.print(" AltMSL (above Ellipsoid model surface of earth): "); |
151 | | - Serial.print(altitudeEllipsoid); |
152 | | - Serial.println(" (mm)"); |
153 | | - }*/ |
154 | | - |
| 53 | + //Query module only every second. Doing it more often will just cause I2C traffic. |
| 54 | + //The module only responds when a new position is available |
| 55 | + if (millis() - lastTime > 1000) |
| 56 | + { |
| 57 | + lastTime = millis(); //Update the timer |
| 58 | + |
| 59 | + long latitude = myGPS.getLatitude(); |
| 60 | + Serial.print(F("Lat: ")); |
| 61 | + Serial.print(latitude); |
| 62 | + |
| 63 | + long longitude = myGPS.getLongitude(); |
| 64 | + Serial.print(F(" Long: ")); |
| 65 | + Serial.print(longitude); |
| 66 | + Serial.print(F(" (degrees * 10^-7)")); |
| 67 | + |
| 68 | + long altitude = myGPS.getAltitude(); |
| 69 | + Serial.print(F(" Alt (above mean sea level): ")); |
| 70 | + Serial.print(altitude); |
| 71 | + Serial.print(F(" (mm)")); |
| 72 | + |
| 73 | + byte SIV = myGPS.getSIV(); |
| 74 | + Serial.print(F(" SIV: ")); |
| 75 | + Serial.print(SIV); |
| 76 | + |
| 77 | + Serial.println(); |
| 78 | + } |
155 | 79 | } |
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