1. Amazon Alexa¶
1.1. Amazon授权¶
使用 Alexa Voice Service，首先你需要注册一个Amazon账号，向 Amazon 注册你的产品，并对你的 alexa client 进行授权。
第一步，按照官方指导，仔细的按照步骤，注册你的产品，并创建安全配置文件。
第二步，得到你的 Client ID 和 Product ID
获取 Product ID：
获取 Client ID：
1.3. 使用流程¶
注意：Alexa Voice Service 不支持中文。
● 上电开机，如果没有配置网络，先进行配网。
● 将上面获得的Client ID 和 Product ID填入 /oem/AlexaClientSDKConfig.json的deviceInfo属性：
"deviceInfo":{
// Unique device serial number. e.g. 123456
"deviceSerialNumber":"123456",
// The Client ID of the Product from developer.amazon.com
"clientId":"YOUR_CLIENT_ID",
// Product ID from developer.amazon.com
"productId":"YOUR_PRODUCT_ID"
},
● 执行下面命令启动 Alexa
SampleApp /oem/AlexaClientSDKConfig.json /oem/resources/
● 第一次启动需要进行认证授权，按提示打开对应网页，输入验证码进行认证即可
##################################
# NOT YET AUTHORIZED #
##################################
################################################################################################
# To authorize, browse to: 'https://amazon.com/us/code' and enter the code: AT4HLU #
################################################################################################
#################################################
# Checking for authorization (1)... #
#################################################
● 认证过程中，稍等几分钟后，就可以与 Alexa 进行对话，可通过呼叫“alexa”唤醒，不过大部分交互体验都要通过命令行引导。
+----------------------------------------------------------------------------+
| Options: |
| Wake word: |
| Simply say Alexa and begin your query. |
| Tap to talk: |
| Press 't' and Enter followed by your query (no need for the 'Alexa').|
| Hold to talk: |
| Press 'h' followed by Enter to simulate holding a button. |
| Then say your query (no need for the 'Alexa'). |
| Press 'h' followed by Enter to simulate releasing a button. |
| Stop an interaction: |
| Press 's' and Enter to stop an ongoing interaction. |
| Privacy mode (microphone off): |
| Press 'm' and Enter to turn on and off the microphone. |
| Echo Spatial Perception (ESP): This is for testing purpose only! |
| Press 'e' followed by Enter at any time to adjust ESP settings. |
| Playback Controls: |
| Press '1' for a 'PLAY' button press. |
| Press '2' for a 'PAUSE' button press. |
| Press '3' for a 'NEXT' button press. |
| Press '4' for a 'PREVIOUS' button press. |
| Settings: |
| Press 'c' followed by Enter at any time to see the settings screen. |
| Speaker Control: |
| Press 'p' followed by Enter at any time to adjust speaker settings. |
| Firmware Version: |
| Press 'f' followed by Enter at any time to report a different |
| firmware version. |
| Info: |
| Press 'i' followed by Enter at any time to see the help screen. |
| Reset device: |
| Press 'k' followed by Enter at any time to reset your device. This |
| will erase any data stored in the device and you will have to |
| re-register your device. |
| This option will also exit the application. |
| Reauthorize device: |
| Press 'z' followed by Enter at any time to re-authorize your device. |
| This will erase any data stored in the device and initiate |
| re-authorization. |
| Quit: |
| Press 'q' followed by Enter at any time to quit the application. |
+----------------------------------------------------------------------------+
1.4. 资源¶
Alexa 源码目录：
SDK/external/alexaClientSDK/
Buildroot 的 Alexa package 目录：
SDK/buildroot/package/rockchip/alexaClientSDK/
Alexa 没有自启动入口，需要进入系统后自己手动启动Alexa，方法如上一节。如果需要自启动，则可以参考DuerOS。
1.5. 编译方法¶
● 编译之前，亦可将上面获得的Client ID 和 Product ID填入SDK/device/rockchip/rk3308/alexa/AlexaClientSDKConfig.json的deviceInfo属性，这样固件就默认的带有了Client ID 和 Product ID信息。
"deviceInfo":{
// Unique device serial number. e.g. 123456
"deviceSerialNumber":"123456",
// The Client ID of the Product from developer.amazon.com
"clientId":"YOUR_CLIENT_ID",
// Product ID from developer.amazon.com
"productId":"YOUR_PRODUCT_ID"
},
● 甚至可以从已经认证过的设备中，拷贝/oem/application-necessities/cblAuthDelegate.db到SDK中device/rockchip/rk3308/alexa/application-necessities/cblAuthDelegate.db，这样Alexa就会跳过认证，直接开始对话。
● 编辑 device/rockchip/rk3308/BoardConfig.mk 文件，将 OEM_PATH=oem 修改为 OEM_PATH=alexa，保存退出
● 配置 firefly_rk3308_release
source buildroot/build/envsetup.sh
选择[1]，按回车，配置成功后如下
● Buildroot配置：BR2_PACKAGE_ALEXACLIENTSDK
make menuconfig
进入图形选择界面，输入 /，跳出搜索界面如下，输入BR2_PACKAGE_ALEXACLIENTSDK，按回车进行搜索
选择[1]，然后按空格选择上 alexa client sdk
前面有 [ * ] 号，表示已经选上，然后< Save >保存，并< Exit >退出图形界面，输入配置保存命令：
make savedefconfig
保存配置，不保存的话，会在一键编译脚本中被重置
● 在编译前，如果当前仓库不是第一次编译，需要执行：
make gst1-plugins-good-reconfigure && make gst1-plugins-good-rebuild
● 最后全部编译
./build.sh