User's Manual
Table Of Contents
- UPuTTYU provides Secure Socket Shell (SSH) access to the development board operating system.
- # Install Bonjour Print Service (For Windows 7 only)
- Steps:
- Check if the setup takes effect:
- In AP mode
- In Station mode
- Step1: Type UCI commands to assign SSID, key, and encryption information for running Station mode
- Step 2: Restart the Wi-Fi driver for activating the configuration
- Step 3: Check for Internet connection
- Step1: type UCI command to disable Station mode
- Step 2: restart the Wi-Fi driver
- Step 1: Create lks7688.cfg file
- Step 2: Attach the USB Drive to the board
- Step 3: Reset and press WiFi button
- # Using SCP
- Using Samba
- AWS IoT SDK for JavaScript
- AWS IoT Embedded-C SDK
- Basic Concepts :
- GPIO and Interupts
- PWM
- I2C
- SPI
- Installing MRAA
- Controlling LED with MRAA in Node.js
- Step-by-step
- Create and configure C project
- Supported cameras
- AI7688H has installed Linux UVC (USB Video Class) drivers to provide USB webcam suppport. Webcams follow the UVC standard can be supported on AI7688H. The real capabilities and supported resolution depend on the current UVC driver implementation.
- Step-by-step
- we use mjpg-streamer as the streaming application and it's already installed in the system firmware by default. For the webcam, Logitech C310 is used in this example.
AI7688H User Manual
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Copyright@2016 AcSiP
11 Audio Playback and Recording
AI7688H has an I2S interface for audio playback and recording. You'll need an audio DAC to convert
I2S to analog sound data.
Note: the recording function is only supported with firmware v0.9.3 and above.
Audio Playback
MP3 playback
To play a MP3 file, use madplay:
WAV playback
To play a WAV file, use aplay as below:
Audio recording
WAV recording
Note: for a high bit-rate WAV recording (like 16bit/44.1k format as the below example), please record
the file to a destination with high I/O speed (e.g. USB drive, SD card, or RAM) instead of the
on-board flash. Due to the low writing speed of the on-board flash, users will experience sound
jittering and buffer overrun if the recorded file is written to the on-board flash.
To record an audio file, use arecord as below: