3.15.1. Connect mouse or keyboard test
...........................................................................
44
3.15.2. Connect USB storage device test
..........................................................................
44
3.16. USB camera test
...............................................................................................................
45
3.17. 13 Pin transfer board interface pin description
................................................................
47
3.18. Audio test
..........................................................................................................................
48
3.18.1. Headphone jack play audio test
............................................................................
48
3.18.2. HDMI audio playback test
....................................................................................
50
3.19. IR receiving test
...............................................................................................................
50
3.20. Hardware watchdog test
...................................................................................................
51
3.21. Temperature sensor
..........................................................................................................
52
3.22. How to install Docker
......................................................................................................
53
3.23. 26pins GPIO, I2C, UART, SPI test
..................................................................................
54
3.23.1. 26 Pins description
................................................................................................
54
3.23.2. Install wiringOP
....................................................................................................
54
3.23.3. Test common GPIO port
.......................................................................................
55
3.23.4. SPI test
..................................................................................................................
57
3.23.5. I2C test
..................................................................................................................
58
3.23.6. UART test
..............................................................................................................
59
3.24. Method of redirecting kernel console output to serial port ttyS5
....................................
60
3.25. SPI Nor Flash test
............................................................................................................
61
4. Linux SDK instructions
.................................................................................................................
63
4.1. Get the source code of Linux SDK
....................................................................................
63
4.2. Download the compilation toolchain
.................................................................................
64
4.3. Compile u-boot
...................................................................................................................
65
4.4. Compile the Linux kernel
..................................................................................................
69
4.5. Compile rootfs
....................................................................................................................
73
4.6. Compile linux image
..........................................................................................................
75
5. Android
OS
instructions
................................................................................................................
77
5.1. Supported Android version
................................................................................................
77
5.2. Android 10 feature adaptation
............................................................................................
77
5.3. Onboard LED light display description
.............................................................................
78
5.4. How to use ADB?
...............................................................................................................
78
5.4.1. Open USB debugging option
..................................................................................
78
5.4.2. Use data cable to connect adb debugging
...............................................................
79
5.4.3. Use network connection adb debugging
.................................................................
80
5.5. How to use a USB camera
.................................................................................................
81
5.6. Android OS ROOT description
..........................................................................................
82
6. Android SDK instructions
.............................................................................................................
84
6.1. Download the source code of android SDK
......................................................................
84
6.2. Build android compilation environment
............................................................................
85
6.3. Compile android image
......................................................................................................
86
6.3.1. Compile the kernel
..................................................................................................
86
6.3.2. Compile android source code
.................................................................................
87
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