- Notes, cautions, and warnings
- Overview
- System views
- Installing your Edge Gateway
- Safety and regulatory information
- Setting up your Edge Gateway
- Activating your mobile broadband service
- Mounting your Edge Gateway
- Mounting the Edge Gateway using the standard-mount bracket
- Mounting the Edge Gateway using quick-mount bracket
- Attaching the cable control bars to the standard-mount bracket
- Mounting the Edge Gateway on a DIN rail using the DIN-rail bracket
- Mounting the Edge Gateway using the perpendicular mount
- Mounting the Edge Gateway using a VESA mount
- Setting up the ZigBee dongle
- Setting up the operating system
- Windows 10 IoT Enterprise LTSB 2016
- Ubuntu Core 16
- Overview
- Boot up and log in – Remote system configuration
- Updating operating system and applications
- Additional Ubuntu commands
- Ubuntu Network Manager
- Serial ports
- Minicom
- GPIO
- Security
- Watchdog Timer (WDT)
- Cloud LED On/Off
- Global Positioning Systems (GPS)
- Snappy auto update/Autopilot
- Accessing Snappy Store/Snapweb
- Sensors
- Ignition Pin
- System Power Management
- Restoring Ubuntu Core 16
- Flashing a new OS image
- Ubuntu Server
- Overview
- Login to the Edge Gateway using Ethernet Port 1
- Installing or configuring Dynamic Host Configuration Protocol (DHCP) daemon
- Ubuntu Server driver information
- Firmware management on Ubuntu Server
- Configure Watchdog Timer (WDT)
- Trusted Platform Module (TPM)
- Cloud LED On/Off
- Advanced Linux Sound Architecture (ALSA)
- Global Positioning Systems (GPS)
- Serial ports
- GPIO
- Sensors
- Ignition Pin
- System Power Management
- Ubuntu Network Manager
- Restoring Ubuntu Server
- Creating the OS recovery USB flash drive
- Accessing and updating BIOS
- References
- Appendix
- Contacting Dell
Dell Edge Gateway 3001 Installation and Operation Manual
Advanced Linux Sound Architecture (ALSA)
Advanced Linux Sound Architecture (ALSA) is part of the Linux kernel, which provides an Application Programming Interface (API) for sound card device drivers.
The following table lists ALSA utilities included with the Edge Gateway:
| Utilities | Description |
|---|---|
| alsactl | Advanced controls for ALSA sound drivers |
| alsaloop | Create loopbacks between PCM capture and playback devices |
| alsamixer | ALSA Ncurses mixer |
| alsaucm | ALSA use-case manager |
| amixer | Command-line mixer |
| amidi | Read from and write to ALSA raw-MIDI ports |
| aplay, arecord | Command-line playback and recording |
| aplaymidi, arecordmidi | Command-line MIDI playback and recording |
| aconnect, aseqnet, aseqdump | Command-line MIDI sequencer control |
| iecset | Set or dump IEC958 status bits |
| speaker-test | Speaker test-tone generator |
NOTE: For more information about ALSA on Ubuntu, see packages.ubuntu.com/bionic/alsa-utils.
Playback
The following shows an example of how to playback audio with ALSA.
- List available devices (default: baytrailcraudio).
# aplay -l
- Playback.
# aplay /usr/share/sounds/alsa/Front_Center.wmv
Recording
The following shows an example of how to record audio with ALSA.
- List available devices (default: baytrailcraudio).
# arecord -l
- Record.
# arecord -f cd -t wav /tmp/test.wav
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