mirror of https://bitbucket.org/ausocean/av.git
63 lines
1.6 KiB
Go
63 lines
1.6 KiB
Go
// +build pi0
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/*
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DESCRIPTION
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pi0.go defines an initialisation function for use when running on the
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Raspberry Pi 0.
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AUTHORS
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Ella Pietraroia <ella@ausocean.org>
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Scott Barnard <scott@ausocean.org>
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Saxon Nelson-Milton <saxon@ausocean.org>
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LICENSE
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Copyright (C) 2020 the Australian Ocean Lab (AusOcean)
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It is free software: you can redistribute it and/or modify them
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under the terms of the GNU General Public License as published by the
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Free Software Foundation, either version 3 of the License, or (at your
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option) any later version.
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It is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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in gpl.txt. If not, see http://www.gnu.org/licenses.
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*/
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package main
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import (
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"os/exec"
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"time"
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"bitbucket.org/ausocean/utils/logging"
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)
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const audioCmd = "play"
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func initCommand(l logging.Logger) {
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const (
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cardPath = "/usr/share/doc/audioInjector/asound.state.RCA.thru.test"
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retryDur = 5 * time.Second
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alsactl = "alsactl"
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)
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// Make sure utility to set up sound card, alsactl, exists.
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checkPath(alsactl, l)
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// Set up sound card using alsactl.
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cmdInit := exec.Command(alsactl, "-f", cardPath, "restore")
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err := cmdInit.Run()
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for err != nil {
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l.Warning("alsactl run failed, retrying...", "error", err)
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time.Sleep(retryDur)
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err = cmdInit.Run()
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}
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// Make sure utility to play audio exists.
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checkPath(audioCmd, l)
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}
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