645267288c
Modify the BAP Broadcast source sample to use the next USB stack. For simplicity, the changes are minimum and will still do the same downsampling, and thus use a fixed 48KHz audio input. Signed-off-by: Emil Gydesen <emil.gydesen@nordicsemi.no>
56 lines
1.4 KiB
Plaintext
56 lines
1.4 KiB
Plaintext
/*
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* Copyright (c) 2025 Nordic Semiconductor ASA
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <dt-bindings/usb/audio.h>
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/ {
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uac2_broadcaster: usb_audio2 {
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compatible = "zephyr,uac2";
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status = "okay";
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full-speed;
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audio-function = <AUDIO_FUNCTION_OTHER>;
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/* Clock supporting 48KHz
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*
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* For simplicity we claim support for 48KHz only and then downsample if needed
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*/
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uac_aclk: aclk {
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compatible = "zephyr,uac2-clock-source";
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clock-type = "internal-programmable";
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frequency-control = "read-only";
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sampling-frequencies = <48000>;
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/* Falsely claim synchronous audio because we
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* currently don't calculate feedback value
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*/
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sof-synchronized;
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};
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/* USB Audio terminal from USB host to USB device */
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out_terminal: out_terminal {
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compatible = "zephyr,uac2-input-terminal";
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clock-source = <&uac_aclk>;
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terminal-type = <USB_TERMINAL_STREAMING>;
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front-left;
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front-right;
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};
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/* The broadcaster_output terminal defines what we are sending over Bluetooth */
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broadcaster_output: headphones {
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compatible = "zephyr,uac2-output-terminal";
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data-source = <&out_terminal>;
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clock-source = <&uac_aclk>;
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terminal-type = <OUTPUT_TERMINAL_UNDEFINED>;
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};
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as_iso_out: out_interface {
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compatible = "zephyr,uac2-audio-streaming";
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linked-terminal = <&out_terminal>;
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subslot-size = <2>;
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bit-resolution = <16>;
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};
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};
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};
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