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

Add sample code for getting volume to headset sample and headphone_microphone sample Signed-off-by: Saw Xu <Saw1993@126.com>
zephyrproject-rtos · Aug 15, 2023 · 4c96dfe · 4c96dfe
1 parent aac7c8f
commit 4c96dfe
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Showing 4 changed files with 24 additions and 0 deletions.
diff --git a/samples/subsys/usb/audio/headphones_microphone/app.overlay b/samples/subsys/usb/audio/headphones_microphone/app.overlay
@@ -10,6 +10,11 @@
 		feature-mute;
 		channel-l;
 		channel-r;
+
+		feature-volume;
+		volume-max = <0x0500>;
+		volume-min = <0xBA00>;
+		volume-res = <0x100>;
 	};
 	mic_0 {
 		compatible = "usb-audio-mic";

diff --git a/samples/subsys/usb/audio/headphones_microphone/src/main.c b/samples/subsys/usb/audio/headphones_microphone/src/main.c
@@ -45,10 +45,17 @@ static void data_received(const struct device *dev,
 static void feature_update(const struct device *dev,
 			   const struct usb_audio_fu_evt *evt)
 {
+	int16_t volume = 0;
+
 	LOG_DBG("Control selector %d for channel %d updated",
 		evt->cs, evt->channel);
 	switch (evt->cs) {
 	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:
 		break;
 	}

diff --git a/samples/subsys/usb/audio/headset/app.overlay b/samples/subsys/usb/audio/headset/app.overlay
@@ -14,5 +14,10 @@
 		hp-feature-mute;
 		hp-channel-l;
 		hp-channel-r;
+
+		hp-feature-volume;
+		volume-max = <0x0500>;
+		volume-min = <0xBA00>;
+		volume-res = <0x100>;
 	};
 };
diff --git a/samples/subsys/usb/audio/headset/src/main.c b/samples/subsys/usb/audio/headset/src/main.c
@@ -43,10 +43,17 @@ static void data_received(const struct device *dev,
 static void feature_update(const struct device *dev,
 			   const struct usb_audio_fu_evt *evt)
 {
+	int16_t volume = 0;
+
 	LOG_DBG("Control selector %d for channel %d updated",
 		evt->cs, evt->channel);
 	switch (evt->cs) {
 	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:
 		break;
 	}