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| | [[Android Hardware Access/zh|查看中文]] | | [[Android Hardware Access/zh|查看中文]] |
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| − | | + | The Document has moved to: [[FriendlyThings]] |
| − | ==Introduction==
| + | |
| − | FriendlyElec developed a library called “libfriendlyarm-hardware.so”, for android developer to access the hardware resources on the development board in their android apps, the library is based on Android NDK.<br />
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| − | | + | |
| − | ==Accessible Interfaces & Ports==
| + | |
| − | * Serial Port
| + | |
| − | * PWM
| + | |
| − | * EEPROM
| + | |
| − | * ADC
| + | |
| − | * LED
| + | |
| − | * LCD 1602 (I2C)
| + | |
| − | * OLED (SPI)
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| − | I2C, SPI, GPIO are accessible.<br />
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| − | <br />
| + | |
| − | <div><ul>
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| − | <li style="display: inline-block;"> [[File:Smart4418SDK+OLED.png|frameless|350px|Smart4418SDK+OLED]]</li>
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| − | <li style="display: inline-block;"> [[File:NanoPCT3-I2C-LCD1602.jpg|frameless|350px|NanoPCT3-I2C-LCD1602]] </li>
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| − | </ul></div>
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| − | | + | |
| − | ==Available OS & Boards==
| + | |
| − | * Android 2.3: Mini6410, Tiny6410
| + | |
| − | * Android 4.2: Mini210S, Smart210 with SDK, Tiny210 with SDK, Tiny4412 with SDK
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| − | * Android 4.4: NanoPi M2, NanoPi S2, NanoPC-T2, Smart4418 with SDK
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| − | * Android 5: NanoPi M3, NanoPi-T3, Tiny4412 with SDK
| + | |
| − | <br />
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| − | | + | |
| − | ==Code Samples==
| + | |
| − | * Here is a github address for code samples: https://github.com/friendlyarm/AndroidHardwareAccess
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| − | | + | |
| − | ==Compile & Deploy Andorid Code (SerialPortDemo)==
| + | |
| − | ===Step 1. Import source code in eclipse (SerialPortDemo)===
| + | |
| − | Start eclipse, click on "Import" on its main window's File menu and then select "Existing Android Code Into Workspace" to import your source code<br />
| + | |
| − | We name this project as "SerialPortDemo"<br />
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| − | | + | |
| − | <div><ul>
| + | |
| − | <li style="display: inline-block;">[[File:AndroidHW01.png|400px]]</li>
| + | |
| − | <li style="display: inline-block;">[[File:AndroidHW02.png|400px]] </li>
| + | |
| − | </ul></div>
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| − | | + | |
| − | ===Step 2. Edit source code===
| + | |
| − | The names of serial devices this DEMO accesses are listed in this file: src/com/friendlyarm/SerialPortDemo/SerialPortDataProcessView.java<br /> | + | |
| − | Make changes according to your devices' names:<br />
| + | |
| − | [[File:AndroidHW03.png|500px]]<br /> | + | |
| − | | + | |
| − | ====各个平台开发板的串口设备名称 ====
| + | |
| − | * Allwinner H3/H5平台开发板 (NanoPi M1/NanoPi M1 Plus等)
| + | |
| − | UART1-> /dev/ttyS1<br />
| + | |
| − | UART2 -> /dev/ttyS2<br />
| + | |
| − | UART3 -> /dev/ttyS3 (仅NanoPi M1, NanoPi K1, NanoPi K1 Plus可用)<br />
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| − | | + | |
| − | * S5P4418平台开发板 (NanoPi Fire2A/NanoPi M2A/NanoPi S2/NanoPC-T2等)
| + | |
| − | UART1 -> /dev/ttyAMA1 [注1]<br />
| + | |
| − | UART2 -> /dev/ttyAMA2 [注1]<br />
| + | |
| − | UART3 -> /dev/ttyAMA3<br />
| + | |
| − | UART4 -> /dev/ttyAMA4<br />
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| − | | + | |
| − | * S5P6818平台开发板 (NanoPi M3/NanoPC-T3等)
| + | |
| − | UART1 -> /dev/ttySAC1 [注1]<br />
| + | |
| − | UART2 -> /dev/ttySAC2 [注1]<br />
| + | |
| − | UART3 -> /dev/ttySAC3<br />
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| − | UART4 -> /dev/ttySAC4<br />
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| − | <br />
| + | |
| − | 注1: 仅部分板子可用，具体请查看原理图.
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| − | | + | |
| − | ===3) 编译DEMO源代码，并导出apk文件===
| + | |
| − | 在Package Explorer上点击项目名称，保证其处于选中状态:<br />
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| − | [[File:AndroidHW04.png|500px]]<br />
| + | |
| − | 在eclipse菜单File上选择Export...:<br />
| + | |
| − | [[File:AndroidHW05.png|500px]]<br />
| + | |
| − | 选择Export Android Application:<br />
| + | |
| − | [[File:AndroidHW06.png|500px]]<br />
| + | |
| − | 选择项目SerialPortDemo:<br />
| + | |
| − | [[File:AndroidHW07.png|500px]]<br />
| + | |
| − | 这一步，Eclipse要求我们创建或选择自已的签名，这里我们选择Create new keystore, 填写key生成后保存的路径和密码，然后点next:<br />
| + | |
| − | [[File:AndroidHW08.png|500px]]<br />
| + | |
| − | 继续参考下图完善签名信息，然后点next:<br />
| + | |
| − | [[File:AndroidHW09.png|500px]]<br />
| + | |
| − | 接着选择APK文件的保存位置，这里我们选择保存到 signapk-files子目录下，以方便我们稍后要进行的签名操作:<br />
| + | |
| − | [[File:AndroidHW10.png|500px]]<br />
| + | |
| − | 点Finish完成APK的导出：<br />
| + | |
| − | [[File:AndroidHW11.png|500px]]
| + | |
| − | ===4) 使用系统证书对APK进行重新签名===
| + | |
| − | 因为访问硬件需要APK有system权限，所以需要使用系统证对APK进行重新签名，<br />
| + | |
| − | 在命令行下进入signapk-files子目录，然后执行以下命令签名即可：
| + | |
| − | <syntaxhighlight lang="bash">
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| − | cd signapk-files/
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| − | java -jar ./signapk.jar platform.x509.pem platform.pk8 ./SerialPortDemo.apk SerialPortDemo-Signed.apk
| + | |
| − | </syntaxhighlight>
| + | |
| − | 其中，signapk.jar以及签名文件platform.x509.pem和platform.pk8可在开发板资源下载目录的android-platform-key-files目录下找到。
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| − | | + | |
| − | ===5) 运行与调试===
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| − | 5.1) 安装APK，用microUSB线将电脑与开发板连接，用adb命令安装SerialPortDemo-Signed.apk：
| + | |
| − | <syntaxhighlight lang="bash">
| + | |
| − | adb install SerialPortDemo-Signed.apk
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| − | </syntaxhighlight>
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| − | | + | |
| − | 5.2) 调试：
| + | |
| − | 运行 SerialPortDemo后，在adb shell命令行模式下执行：
| + | |
| − | <syntaxhighlight lang="bash">
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| − | ps -Z
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| − | </syntaxhighlight>
| + | |
| − | 然后找到com.friendlyarm.SerialPortDemo这个进程，如果前面的权限是如下所示，表明程序已经获得了 system 权限:
| + | |
| − | <syntaxhighlight lang="bash">
| + | |
| − | u:r:system_app:s0 system 1610 112 com.friendlyarm.SerialPortDemo
| + | |
| − | </syntaxhighlight>
| + | |
| − | 以上是Android4的，如果是Android5，则略有不同，不过都表示已经是 system 权限:
| + | |
| − | <syntaxhighlight lang="bash">
| + | |
| − | u:r:platform_app:s0 u0_a60 1905 138 com.friendlyarm.SerialPortDemo
| + | |
| − | </syntaxhighlight>
| + | |
| − | 如果程序没有获得 system 权限，则打开串口设备会失败。
| + | |
| − | | + | |
| − | ==Resources==
| + | |
| − | * Code Samples: https://github.com/friendlyarm/AndroidHardwareAccess
| + | |
| − | * Guide to API in Chinese: https://github.com/friendlyarm/AndroidHardwareAccess/blob/master/友善电子Android硬件开发指南.pdf
| + | |
| − | | + | |
| − | ==Update Log==
| + | |
| − | ===March-2-2017===
| + | |
| − | * Released English version
| + | |
