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samples: subsys: usb: audio: Add volume control case

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Add sample code for getting volume to headset sample and
headphone_microphone sample

Signed-off-by: Saw Xu <Saw1993@126.com>
This commit is contained in:
Saw Xu 2023-08-15 11:12:09 +08:00 • committed by Carles Cufí
commit 8951bab7e7
4 changed files with 24 additions and 0 deletions
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5
samples/subsys/usb/audio/headphones_microphone/app.overlay
View file

@ -10,6 +10,11 @@
feature-mute; feature-mute;
channel-l; channel-l;
channel-r; channel-r;
feature-volume;
volume-max = <0x0500>;
volume-min = <0xBA00>;
volume-res = <0x100>;
}; };
mic_0 { mic_0 {
compatible = "usb-audio-mic"; compatible = "usb-audio-mic";

7
samples/subsys/usb/audio/headphones_microphone/src/main.c
View file

@ -45,10 +45,17 @@ static void data_received(const struct device *dev,
static void feature_update(const struct device *dev, static void feature_update(const struct device *dev,
const struct usb_audio_fu_evt *evt) const struct usb_audio_fu_evt *evt)
{ {
int16_t volume = 0;
LOG_DBG("Control selector %d for channel %d updated", LOG_DBG("Control selector %d for channel %d updated",
evt->cs, evt->channel); evt->cs, evt->channel);
switch (evt->cs) { switch (evt->cs) {
case USB_AUDIO_FU_MUTE_CONTROL: case USB_AUDIO_FU_MUTE_CONTROL:
break;
case USB_AUDIO_FU_VOLUME_CONTROL:
volume = *((int16_t *)(evt->val));
LOG_INF("set volume: %d", volume);
break;
default: default:
break; break;
} }

5
samples/subsys/usb/audio/headset/app.overlay
View file

@ -14,5 +14,10 @@
hp-feature-mute; hp-feature-mute;
hp-channel-l; hp-channel-l;
hp-channel-r; hp-channel-r;
hp-feature-volume;
volume-max = <0x0500>;
volume-min = <0xBA00>;
volume-res = <0x100>;
}; };
}; };

7
samples/subsys/usb/audio/headset/src/main.c
View file

@ -43,10 +43,17 @@ static void data_received(const struct device *dev,
static void feature_update(const struct device *dev, static void feature_update(const struct device *dev,
const struct usb_audio_fu_evt *evt) const struct usb_audio_fu_evt *evt)
{ {
int16_t volume = 0;
LOG_DBG("Control selector %d for channel %d updated", LOG_DBG("Control selector %d for channel %d updated",
evt->cs, evt->channel); evt->cs, evt->channel);
switch (evt->cs) { switch (evt->cs) {
case USB_AUDIO_FU_MUTE_CONTROL: case USB_AUDIO_FU_MUTE_CONTROL:
break;
case USB_AUDIO_FU_VOLUME_CONTROL:
volume = *((int16_t *)(evt->val));
LOG_INF("set volume: %d", volume);
break;
default: default:
break; break;
} }