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update(demo): add macro for caculating feedback value

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sakumisu
2025-01-13 21:25:42 +08:00
parent 570d2b5ff8
commit a1ac569236
3 changed files with 31 additions and 4 deletions
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23
class/audio/usb_audio.h
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@@ -862,7 +862,7 @@ struct audio_cs_ep_ep_general_descriptor {
0x05, /* bmAttributes */ \
WBVAL(wMaxPacketSize), /* wMaxPacketSize */ \
bInterval, /* bInterval : one packet per frame */ \
bInterval, /* bRefresh */ \
0x00, /* bRefresh */ \
bFeedbackEndpointAddress, /* bSynchAddress */ \
0x07, /* bLength */ \
AUDIO_ENDPOINT_DESCRIPTOR_TYPE, /* bDescriptorType */ \
@@ -874,10 +874,10 @@ struct audio_cs_ep_ep_general_descriptor {
0x09, /* bLength */ \
USB_DESCRIPTOR_TYPE_ENDPOINT, /* bDescriptorType */ \
bFeedbackEndpointAddress, /* bFeedbackEndpointAddress Revise Dir to bEndpointAddress */ \
0x11, /* bmAttributes: TransferType=Isochronous SyncType=None EndpointType=Feedback */ \
0x15, /* bmAttributes: TransferType=Isochronous SyncType=Asynchronous EndpointType=Feedback */ \
WBVAL(4), /* XXXX wMaxPacketSize in Bytes */ \
bInterval, /* bInterval */ \
0x00, /* bRefresh */ \
0x03, /* bRefresh, 8ms */ \
0x00 /* bSynchAddress */
#define AUDIO_AS_DESCRIPTOR_INIT_LEN(n) (0x09 + 0x09 + 0x07 + 0x08 + 3 * n + 0x09 + 0x07)
@@ -1325,7 +1325,7 @@ struct audio_v2_control_range3_param_block {
0x07, /* bLength */ \
USB_DESCRIPTOR_TYPE_ENDPOINT, /* bDescriptorType */ \
bFeedbackEndpointAddress, /* bFeedbackEndpointAddress Revise Dir to bEndpointAddress */ \
0x11, /* bmAttributes: TransferType=Isochronous SyncType=None EndpointType=Feedback */ \
0x15, /* bmAttributes: TransferType=Isochronous SyncType=Asynchronous EndpointType=Feedback */ \
WBVAL(4), /* XXXX wMaxPacketSize in Bytes */ \
bInterval /* bInterval */
@@ -1340,4 +1340,19 @@ struct audio_v2_control_range3_param_block {
#define AUDIO_SAMPLE_FREQ_4B(frq) (uint8_t)(frq), (uint8_t)((frq >> 8)), \
(uint8_t)((frq >> 16)), (uint8_t)((frq >> 24))
/* format 10.14 */
#define AUDIO_UPDATE_FEEDBACK_DATA_FS(buf, freq) \
uint32_t value = ((freq / 1000) << 14) | ((freq % 1000) << 4); \
buf[0] = ((value >> 0U) & 0xFFU); \
buf[1] = ((value >> 8U) & 0xFFU); \
buf[2] = ((value >> 16U) & 0xFFU)
/* format 16.16 */
#define AUDIO_UPDATE_FEEDBACK_DATA_HS(buf, freq) \
uint32_t value = ((freq / 1000) << 13) | ((freq % 1000) << 3); \
buf[0] = ((value >> 0U) & 0xFFU); \
buf[1] = ((value >> 8U) & 0xFFU); \
buf[2] = ((value >> 16U) & 0xFFU); \
buf[3] = ((value >> 24U) & 0xFFU)
#endif /* USB_AUDIO_H */