#if USE_USB_AUDIO_PLAYBACK
/* define synchronization method */
#define USE_AUDIO_PLAYBACK_USB_FEEDBACK 1
/* definition of channel count and space mapping of channels */
/* ! Please dont change channel count , other value than 0x02 aren't supported @TODO add support of multichannel*/
#define USB_AUDIO_CONFIG_PLAY_CHANNEL_COUNT 0x02 /* stereo audio */
#define USB_AUDIO_CONFIG_PLAY_CHANNEL_MAP 0x03 /* channels Left and right */
/* next two values define the supported resolution currently expansion supports only 16 bit and 24 bits resolutions @TODO add other resolution support*/
#define USB_AUDIO_CONFIG_PLAY_RES_BIT 16 /* 24 bit per sample */
#define USB_AUDIO_CONFIG_PLAY_RES_BYTE 2 /* 3 bytes */
/* definition of the list of frequencies */
#define USB_AUDIO_CONFIG_PLAY_USE_FREQ_192_K 1 /* to set by user: 1 : to use , 0 to not support*/
#define USB_AUDIO_CONFIG_PLAY_USE_FREQ_96_K 1 /* to set by user: 1 : to use , 0 to not support*/
#define USB_AUDIO_CONFIG_PLAY_USE_FREQ_48_K 1 /* to set by user: 1 : to use , 0 to not support*/
#define USB_AUDIO_CONFIG_PLAY_USE_FREQ_44_1_K 1 /* to set by user: 1 : to use , 0 to not support*/
#define USB_AUDIO_CONFIG_PLAY_USE_FREQ_32_K 0 /* to set by user: 1 : to use , 0 to not support*/
#define USB_AUDIO_CONFIG_PLAY_USE_FREQ_16_K 0 /* to set by user: 1 : to use , 0 to not support*/
#define USB_AUDIO_CONFIG_PLAY_USE_FREQ_8_K 0 /* to set by user: 1 : to use , 0 to not support*/
#define USE_AUDIO_TIMER_VOLUME_CTRL 0
#define USB_AUDIO_CONFIG_PLAY_BUFFER_SIZE (1024 * 10)
#endif /* USE_USB_AUDIO_PLAYBACK*/
work ok, but when change to 24 bit not.
#define USB_AUDIO_CONFIG_PLAY_RES_BIT 24 /* 24 bit per sample */
#define USB_AUDIO_CONFIG_PLAY_RES_BYTE 3 /* 3 bytes */
#define USB_AUDIO_CONFIG_PLAY_USE_FREQ_192_K 0 /* to set by user: 1 : to use , 0 to not support*/
Windows detect it, but cant test, play or show settings.
