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| resources:tools-software:linuxdsp:docs:quickstartguide:sharc-alsa-example [15 Oct 2021 12:29] – created Henrik Mau | resources:tools-software:linuxdsp:docs:quickstartguide:sharc-alsa-example [02 Nov 2021 16:10] – Added photo of audio connection Henrik Mau | ||
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| Line 10: | Line 10: | ||
| < | < | ||
| - | echo 2Channel-SC594.ldr | + | # echo 2Channel-SC594.ldr |
| - | echo start > / | + | # echo start > / |
| </ | </ | ||
| Line 18: | Line 18: | ||
| \\ | \\ | ||
| ==== Playing Audio ==== | ==== Playing Audio ==== | ||
| - | The audio from the SHARC is routed to DAC1/2. Connect a set of speakers to J17 also labelled as DAC1/2. | + | * The audio from the SHARC is routed to DAC1/2. Connect a set of speakers to J17 also labelled as DAC1/2. |
| + | {{: | ||
| Play back the audio sample file stored in / | Play back the audio sample file stored in / | ||
| < | < | ||
| - | aplay / | + | # aplay / |
| </ | </ | ||
| Line 32: | Line 34: | ||
| < | < | ||
| - | ./rpmsg-bind-chardev -d virtio0.sharc-audioweaver.-1.201 -a 60 | + | # rpmsg-bind-chardev -d virtio0.sharc-audioweaver.-1.201 -a 60 |
| + | </ | ||
| + | |||
| + | Once the binding has been created a character device /dev/rpmsg0 is available and will accept commands with the syntax < | ||
| + | < | ||
| + | # echo 0 800.0 > /dev/rpmsg0 | ||
| </ | </ | ||
| + | Similarly to add a 500Hz tone to channel 1 (Right) enter the following command: | ||
| < | < | ||
| - | echo 0 800.0 > /dev/rpmsg0 | + | # echo 1 500.0 > /dev/rpmsg0 |
| </ | </ | ||
| + | When running aplay again you will hear a dual tone frequency on both channels. | ||
| < | < | ||
| - | echo 1 500.0 > /dev/rpmsg0 | + | # aplay /usr/share/ |
| </ | </ | ||
resources/tools-software/linuxdsp/docs/quickstartguide/sharc-alsa-example.txt · Last modified: 14 Sep 2023 10:12 by Vasileios Bimpikas