GPS技术在我们的日常生活中发挥着重要作用。从人类导航到飞机导航，它有助于解决与位置相关的各种问题。但是，除了提供位置详细信息外，GPS模块从卫星获取的NMEA数据还包含其他参数的信息，例如高度、压力、日期和时间等。这意味着GPS模块也可以用于其他项目。

在本篇文章中，我们将使用UBLOX NEO-6M GPS模块确定我们所在位置的高度。该项目的一个很好的应用将是无人机的安装，其中需要高度作为对IMU或其他类似情况的反馈。尽管存在各种与Arduino兼容的Arduino GPS模块，但它们通常很笨重，并带有其他限制，例如功率要求，这会限制使用它们的项目。UBLOX NEO 6M GPS模块不存在类似的问题。

该模块结构紧凑，尺寸与小型Arduino开发板差不多，这使它们可以轻松安装到任意小型Arduino项目中。 NEO-6M GPS模块是一款高性能GPS接收器，内置25 x 25 x 4mm陶瓷天线，为该模块提供了强大的卫星搜索功能。该模块通过串行协议与连接的微控制器通信，并运行在3-5V的电压电平上。我们将使用GPS模块获取高度数据并将其显示在OLED显示屏上。在本文的最后，您将知道如何使用NMEA协议从GPS模块获取各种信息。

所需的组件

●    GPS模块

●    彩色OLED显示屏

●    Arduino Uno开发板

●    面包板

●    连接导线

原理图

该项目的原理图非常简单。除了Arduino，我们还有其他两个主要组件，即GPS模块和OLED显示屏。 GPS模块通过串行通信，因此将连接到Arduino的串行引脚。但是，我们将使用基于软件串行的通信方式，因为Arduino与PC采用硬件串口进行通信的，请如下图所示连接组件。

Arduino开发板和GPS模块之间的连接如下表所示：

Arduino开发板	GPS模块
GND	GND
5v	VCC
D3	RX
D4	TX

代码

如前所述，我们将不使用GPS模块来获取位置信息（例如经度和纬度），而是展示如何从GPS输出中导出其他参数（例如高度）。GPS模块一旦连接到卫星，就会产生一堆被称为NMEA数据的信息。该数据包含有用的信息，例如位置、高度、压力等。下图显示了典型的NMEA数据。

了解这些信息并提取所需的数据可能是一项艰巨的任务。为使事情变得容易，我们将使用tinyGPS ++库，该库已经具有从NMEA数据中提取特定信息所需的所有函数。可以通过链接下载该库。除了tinyGPS ++库之外，我们还将使用Adafruit GFX库。 GFX库将使与OLED显示屏的交互变得容易。

我们首先包括项目所需的库，然后定义OLED连接的Arduino引脚。

1. // writtern by Nick Koumaris
   
2. //Info@educ8s.tv
   
3. 
   
4. #include <SoftwareSerial.h>
   
5. #include <Adafruit_GFX.h>
   
6. #include <Adafruit_SSD1331.h>
   
7. #include <SPI.h>
   
8. #include "TinyGPS++.h"
   
9. 
   
10. #define sclk 13
    
11. #define mosi 11
    
12. #define cs   10
    
13. #define rst  9
    
14. #define dc

复制代码

接下来，我们指定变量以表示项目要使用的颜色的十六进制数，并创建tinyGPS ++库的实例。 该实例将用于引用传递代码的模块。

1. #define  BLACK           0x0000
   
2. #define BLUE            0x001F
   
3. #define RED             0xF800
   
4. #define GREEN           0x07E0
   
5. #define CYAN            0x07FF
   
6. #define MAGENTA         0xF81F
   
7. #define YELLOW          0xFFE0  
   
8. #define WHITE           0xFFFF
   
9. 
   
10. TinyGPSPlus gps;

复制代码

为了使数据显示更加用户友好，创建了一个标语屏幕和图标，以便可以整洁而酷炫的方式显示信息。 表示UI和图标的字符代码在下面声明。

1. static const unsigned char PROGMEM title[] = {
   
2. 
   
3. 0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,
   
4. 0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,
   
5. 0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,
   
6. 0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,
   
7. 0x0,0x3f,0xc0,0xff,0xc0,0xf,0xe0,0x0,0x0,0x0,0x0,0x0,
   
8. 0x0,0xff,0xe0,0xff,0xf0,0x3f,0xf0,0x0,0x0,0x0,0x0,0x0,
   
9. 0x3,0xff,0xe0,0xff,0xf8,0x7f,0xf0,0x0,0x0,0x0,0x0,0x0,
   
10. 0x7,0xff,0xe0,0xf0,0xfc,0xff,0xf0,0x0,0x0,0x0,0x0,0x0,
    
11. 0x7,0xe0,0x20,0xf0,0x3c,0xf8,0x10,0x0,0x0,0x0,0x0,0x0,
    
12. 0xf,0x80,0x0,0xf0,0x3c,0xf0,0x0,0x0,0x0,0x0,0x0,0x0,
    
13. 0xf,0x0,0x0,0xf0,0x3c,0xf0,0x0,0x0,0x0,0x0,0x0,0x0,
    
14. 0x1e,0x0,0x0,0xf0,0x3c,0xfc,0x0,0x0,0x0,0x0,0x0,0x0,
    
15. 0x1e,0xf,0xf0,0xf0,0x3c,0x7f,0x0,0x0,0x0,0x0,0x0,0x0,
    
16. 0x1e,0xf,0xf0,0xf0,0xf8,0x3f,0xc0,0x0,0x0,0x0,0x0,0x0,
    
17. 0x1e,0xf,0xf0,0xff,0xf8,0x1f,0xe0,0x0,0x0,0x0,0x0,0x0,
    
18. 0x1e,0xf,0xf0,0xff,0xe0,0x7,0xf0,0x0,0x0,0x0,0x0,0x0,
    
19. 0x1e,0x0,0xf0,0xff,0x80,0x1,0xf8,0x0,0x0,0x0,0x0,0x0,
    
20. 0x1f,0x0,0xf0,0xf0,0x0,0x0,0x78,0x0,0x0,0x0,0x0,0x0,
    
21. 0xf,0x80,0xf0,0xf0,0x0,0x80,0x78,0x0,0x0,0x0,0x0,0x0,
    
22. 0xf,0xc0,0xf0,0xf0,0x0,0xe0,0xf8,0x0,0x0,0x0,0x0,0x0,
    
23. 0x7,0xff,0xf0,0xf0,0x0,0xff,0xf8,0x0,0x0,0x0,0x0,0x0,
    
24. 0x3,0xff,0xf0,0xf0,0x0,0xff,0xf0,0x0,0x0,0x0,0x0,0x0,
    
25. 0x1,0xff,0xf0,0xf0,0x0,0xff,0xe0,0x0,0x0,0x0,0x0,0x0,
    
26. 0x0,0x7f,0x80,0xf0,0x0,0x3f,0x80,0x0,0x0,0x0,0x0,0x0,
    
27. 0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,
    
28. 0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,
    
29. 0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,
    
30. 0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,
    
31. 0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,
    
32. 0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,
    
33. 0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,
    
34. 0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,
    
35. 0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,
    
36. 0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,
    
37. 0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,
    
38. 0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,
    
39. 0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,
    
40. 0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,
    
41. 0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,
    
42. 0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,
    
43. 0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,
    
44. 0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,
    
45. 0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,
    
46. 0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,
    
47. 0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,
    
48. 0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,
    
49. 0x0,0xe0,0x71,0xff,0xf9,0xe0,0xf1,0xfd,0xff,0x7f,0x3f,0x80,
    
50. 0x0,0xf0,0x71,0xff,0xf9,0xf0,0xf1,0xfd,0xff,0x7f,0x3f,0xc0,
    
51. 0x1,0xb0,0x70,0x38,0x71,0xb0,0xb1,0xc0,0x38,0x70,0x38,0xc0,
    
52. 0x1,0xb0,0x70,0x38,0x71,0xf1,0xb1,0xc0,0x38,0x70,0x38,0xc0,
    
53. 0x3,0xb8,0x70,0x38,0x71,0xf9,0xb1,0xf8,0x38,0x7e,0x39,0xc0,
    
54. 0x3,0x18,0x70,0x38,0x71,0xdb,0xb1,0xf8,0x38,0x7e,0x3f,0x80,
    
55. 0x3,0x1c,0x70,0x38,0x71,0xdb,0x31,0xc0,0x38,0x70,0x3f,0x80,
    
56. 0x7,0xfc,0x70,0x38,0x71,0xdf,0x31,0xc0,0x38,0x70,0x39,0x80,
    
57. 0x7,0xfc,0x70,0x38,0x71,0xce,0x31,0xc0,0x38,0x70,0x39,0xc0,
    
58. 0x6,0xe,0x7f,0x38,0xf9,0xce,0x31,0xfc,0x38,0x7f,0x38,0xe0,
    
59. 0xe,0xe,0x7f,0x38,0xf9,0xce,0x31,0xfc,0x38,0x7f,0x38,0xf0,
    
60. 0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,
    
61. 0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,
    
62. 0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,
    
63. 0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,
    
64. 0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,
    
65. 0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,
    
66. 0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0
    
67. };
    
68. static const unsigned char PROGMEM ui[] =
    
69. {
    
70. 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
    
71. 0x80,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x1,
    
72. 0x80,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x1,
    
73. 0x80,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x1,
    
74. 0x80,0xe0,0x38,0x7f,0xf7,0xdf,0xfc,0xe0,0xe1,0xfe,0x7,0xf1,
    
75. 0x81,0xf0,0x38,0x7f,0xf7,0xdf,0xfc,0xe0,0xe1,0xff,0x7,0xf1,
    
76. 0x81,0xb0,0x38,0x7,0x3,0x81,0xc0,0xe0,0xe1,0xc7,0x87,0x1,
    
77. 0x81,0xb8,0x38,0x7,0x3,0x81,0xc0,0xe0,0xe1,0xc3,0xc7,0x1,
    
78. 0x83,0xb8,0x38,0x7,0x3,0x81,0xc0,0xe0,0xe1,0xc1,0xc7,0x1,
    
79. 0x83,0xb8,0x38,0x7,0x3,0x81,0xc0,0xe0,0xe1,0xc1,0xc7,0xe1,
    
80. 0x87,0x1c,0x38,0x7,0x3,0x81,0xc0,0xe0,0xe1,0xc1,0xc7,0xe1,
    
81. 0x87,0x1c,0x38,0x7,0x3,0x81,0xc0,0xe0,0xe1,0xc1,0xc7,0x1,
    
82. 0x87,0xfc,0x38,0x7,0x3,0x81,0xc0,0xe0,0xe1,0xc1,0xc7,0x1,
    
83. 0x8f,0xfe,0x38,0x7,0x3,0x81,0xc0,0xe0,0xe1,0xc3,0x87,0x1,
    
84. 0x8e,0xe,0x38,0x7,0x3,0x81,0xc0,0x71,0xc1,0xc7,0x87,0x1,
    
85. 0x8e,0xe,0x3f,0x87,0x7,0xc1,0xc0,0x7f,0xc1,0xff,0x7,0xf1,
    
86. 0x9c,0x7,0x3f,0x87,0x7,0xc1,0xc0,0x1f,0x1,0xfc,0x7,0xf1,
    
87. 0x80,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x1,
    
88. 0x80,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x1,
    
89. 0x80,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x1,
    
90. 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
    
91. 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
    
92. 0x80,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x1,
    
93. 0x80,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x1,
    
94. 0x80,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x1,
    
95. 0x80,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x1,
    
96. 0x80,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x1,
    
97. 0x80,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x1,
    
98. 0x80,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x1,
    
99. 0x80,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x1,
    
100. 0x80,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x1,
     
101. 0x80,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x1,
     
102. 0x80,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x1,
     
103. 0x80,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x1,
     
104. 0x80,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x1,
     
105. 0x80,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x1,
     
106. 0x80,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x1,
     
107. 0x80,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x1,
     
108. 0x80,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x1,
     
109. 0x80,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x1,
     
110. 0x80,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x1,
     
111. 0x80,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x1,
     
112. 0x80,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x1,
     
113. 0x80,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x1,
     
114. 0x80,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x1,
     
115. 0x80,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x1,
     
116. 0x80,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x1,
     
117. 0x80,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x1,
     
118. 0x80,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x1,
     
119. 0x80,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x1,
     
120. 0x80,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x1,
     
121. 0x80,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x1,
     
122. 0x80,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x1,
     
123. 0x80,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x1,
     
124. 0x80,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x1,
     
125. 0x80,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x1,
     
126. 0x80,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x1,
     
127. 0x80,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x1,
     
128. 0x80,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x1,
     
129. 0x80,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x1,
     
130. 0x80,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x1,
     
131. 0x80,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x1,
     
132. 0x80,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x1,
     
133. 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff
     
134. };
     
135. 
     
136. static const unsigned char PROGMEM gpsIcon[] = {
     
137. 
     
138. 0x0,0xe0,0x0,0x0,
     
139. 0x1,0xf0,0x0,0x0,
     
140. 0x3,0xf8,0x0,0x0,
     
141. 0x3,0x98,0x0,0x0,
     
142. 0xe,0x7,0x0,0x0,
     
143. 0xe,0x7,0x80,0x0,
     
144. 0xe,0x3,0x80,0x0,
     
145. 0x3,0x81,0xfc,0x0,
     
146. 0x3,0xc1,0xfc,0x0,
     
147. 0x1,0xc1,0xfe,0x0,
     
148. 0x0,0xf7,0xfe,0x0,
     
149. 0x0,0x3f,0xfc,0x0,
     
150. 0x0,0x3f,0xfc,0x0,
     
151. 0x0,0x1f,0xff,0x80,
     
152. 0x0,0x1f,0xfb,0x80,
     
153. 0xcc,0x1f,0xe1,0xc0,
     
154. 0xce,0x1f,0xe0,0x70,
     
155. 0xce,0xf,0xe0,0x70,
     
156. 0x6e,0x7,0x60,0x38,
     
157. 0x67,0x0,0x78,0xc,
     
158. 0x63,0x0,0x1c,0x1c,
     
159. 0x73,0x80,0x1c,0x3c,
     
160. 0x71,0xf0,0x7,0x70,
     
161. 0x30,0xf8,0x7,0xf0,
     
162. 0x1c,0x3e,0x3,0xc0,
     
163. 0xf,0x0,0x0,0x80,
     
164. 0xf,0x80,0x0,0x0,
     
165. 0x3,0xf0,0x0,0x0,
     
166. 0x0,0xfe,0x0,0x0,
     
167. 0x0,0xe,0x0,0x0
     
168. };

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接下来，我们初始化软件串行库，说明将arduino的引脚用作软件TX和RX引脚。我们还创建OLED库的实例。

1. SoftwareSerial SoftSerial(4, 3); //RX, TX
   
2. Adafruit_SSD1331 display = Adafruit_SSD1331(cs, dc, rst);

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在void setup()函数中，我们初始化显示屏和串行通信，以声明希望设备进行通信的波特率。用于该项目的特定GPS模块的预设波特率是9600bps。确保与您的模块相同，或进行相应的修改。为了解决问题，我们显示了UI，使OLED准备显示高度数据。

1. void setup()
   
2. {
   
3.   
   
4.   display.begin();
   
5.   display.fillScreen(BLACK);
   
6. 
   
7.   printSplashScreen();
   
8.   
   
9.   SoftSerial.begin(9600);  // the SoftSerial baud rate
   
10.   delay(1000);
    
11.   Serial.begin(9600);      // the Serial port of Arduino baud rate.
    
12.   delay(2000);
    
13.   printUI();
    
14. 
    
15. }

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在void loop函数中，我们检查GPS模块是否正在接收数据，并使用gps.altitude.meters()函数从模块中提取高度信息。该代码还显示了如何使用gps.location.lat()和gps.location.lng()函数从NMEA数据中获取位置信息的示例，以获取经度和纬度信息。

1. void loop()
   
2. {
   
3.   String altitude ;
   
4.   
   
5.   while (SoftSerial.available() > 0)
   
6.    gps.encode(SoftSerial.read());
   
7.   
   
8.   if (gps.location.isUpdated())
   
9.   {
   
10.     Serial.print("LAT="); Serial.print(gps.location.lat(), 6);
    
11.     Serial.print("  LNG="); Serial.println(gps.location.lng(), 6);
    
12.   }
    
13. 
    
14.   if (gps.altitude.isUpdated())
    
15.   {
    
16.     Serial.print("Altitude:");
    
17.     Serial.println(gps.altitude.meters());
    
18.     altitude = String((int)gps.altitude.meters())+" m";
    
19.     display.setCursor(18,35);
    
20.     display.print(altitude);
    
21.   }
    
22. }

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最终效果演示

该项目的演示非常简单。 查看原理图以确认您已正确连接所有组件，然后将代码上传到Arduino开发板。 几分钟后，您应该会在OLED上看到设备当前位置的高度。 确保在室外进行测试。

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