#include "usbd_core.h" #include "usbd_audio.h" #define USBD_VID 0xffff #define USBD_PID 0xffff #define USBD_MAX_POWER 100 #define USBD_LANGID_STRING 1033 #ifdef CONFIG_USB_HS #define EP_INTERVAL 0x04 #else #define EP_INTERVAL 0x01 #endif #define AUDIO_OUT_EP 0x01 #define AUDIO_FREQ 48000 #define HALF_WORD_BYTES 2 //2 half word (one channel) #define SAMPLE_BITS 16 //16 bit per channel #define OUT_CHANNEL_NUM 2 #if OUT_CHANNEL_NUM == 1 #define OUTPUT_CTRL DBVAL(BMCONTROL) #define OUTPUT_CH_ENABLE 0x00000001 #elif OUT_CHANNEL_NUM == 2 #define OUTPUT_CTRL DBVAL(BMCONTROL), DBVAL(BMCONTROL) #define OUTPUT_CH_ENABLE 0x00000003 #elif OUT_CHANNEL_NUM == 3 #define OUTPUT_CTRL DBVAL(BMCONTROL), DBVAL(BMCONTROL), DBVAL(BMCONTROL) #define OUTPUT_CH_ENABLE 0x00000007 #elif OUT_CHANNEL_NUM == 4 #define OUTPUT_CTRL DBVAL(BMCONTROL), DBVAL(BMCONTROL), DBVAL(BMCONTROL), DBVAL(BMCONTROL) #define OUTPUT_CH_ENABLE 0x0000000f #elif OUT_CHANNEL_NUM == 5 #define OUTPUT_CTRL DBVAL(BMCONTROL), DBVAL(BMCONTROL), DBVAL(BMCONTROL), DBVAL(BMCONTROL), DBVAL(BMCONTROL) #define OUTPUT_CH_ENABLE 0x0000001f #elif OUT_CHANNEL_NUM == 6 #define OUTPUT_CTRL DBVAL(BMCONTROL), DBVAL(BMCONTROL), DBVAL(BMCONTROL), DBVAL(BMCONTROL), DBVAL(BMCONTROL), DBVAL(BMCONTROL) #define OUTPUT_CH_ENABLE 0x0000003F #elif OUT_CHANNEL_NUM == 7 #define OUTPUT_CTRL DBVAL(BMCONTROL), DBVAL(BMCONTROL), DBVAL(BMCONTROL), DBVAL(BMCONTROL), DBVAL(BMCONTROL), DBVAL(BMCONTROL), DBVAL(BMCONTROL) #define OUTPUT_CH_ENABLE 0x0000007f #elif OUT_CHANNEL_NUM == 8 #define OUTPUT_CTRL DBVAL(BMCONTROL), DBVAL(BMCONTROL), DBVAL(BMCONTROL), DBVAL(BMCONTROL), DBVAL(BMCONTROL), DBVAL(BMCONTROL), DBVAL(BMCONTROL), DBVAL(BMCONTROL) #define OUTPUT_CH_ENABLE 0x000000ff #endif #define AUDIO_OUT_PACKET ((uint32_t)((AUDIO_FREQ * HALF_WORD_BYTES * OUT_CHANNEL_NUM) / 1000)) #define BMCONTROL (AUDIO_V2_FU_CONTROL_MUTE | AUDIO_V2_FU_CONTROL_VOLUME) #define USB_AUDIO_CONFIG_DESC_SIZ (9 + \ AUDIO_V2_AC_DESCRIPTOR_INIT_LEN + \ AUDIO_V2_SIZEOF_AC_CLOCK_SOURCE_DESC + \ AUDIO_V2_SIZEOF_AC_INPUT_TERMINAL_DESC + \ AUDIO_V2_SIZEOF_AC_FEATURE_UNIT_DESC(OUT_CHANNEL_NUM) + \ AUDIO_V2_SIZEOF_AC_OUTPUT_TERMINAL_DESC + \ AUDIO_V2_AS_DESCRIPTOR_INIT_LEN) #define AUDIO_AC_SIZ (AUDIO_V2_SIZEOF_AC_HEADER_DESC + \ AUDIO_V2_SIZEOF_AC_CLOCK_SOURCE_DESC + \ AUDIO_V2_SIZEOF_AC_INPUT_TERMINAL_DESC + \ AUDIO_V2_SIZEOF_AC_FEATURE_UNIT_DESC(OUT_CHANNEL_NUM) + \ AUDIO_V2_SIZEOF_AC_OUTPUT_TERMINAL_DESC) const uint8_t audio_descriptor[] = { USB_DEVICE_DESCRIPTOR_INIT(USB_2_0, 0x00, 0x00, 0x00, USBD_VID, USBD_PID, 0x0001, 0x01), USB_CONFIG_DESCRIPTOR_INIT(USB_AUDIO_CONFIG_DESC_SIZ, 0x02, 0x01, USB_CONFIG_BUS_POWERED, USBD_MAX_POWER), AUDIO_V2_AC_DESCRIPTOR_INIT(0x00, 0x02, AUDIO_AC_SIZ, AUDIO_CATEGORY_SPEAKER, 0x00, 0x00), AUDIO_V2_AC_CLOCK_SOURCE_DESCRIPTOR_INIT(0x01, 0x03, 0x03), AUDIO_V2_AC_INPUT_TERMINAL_DESCRIPTOR_INIT(0x02, AUDIO_TERMINAL_STREAMING, 0x01, OUT_CHANNEL_NUM, OUTPUT_CH_ENABLE, 0x0000), AUDIO_V2_AC_FEATURE_UNIT_DESCRIPTOR_INIT(0x03, 0x02, OUTPUT_CTRL), AUDIO_V2_AC_OUTPUT_TERMINAL_DESCRIPTOR_INIT(0x04, AUDIO_OUTTERM_SPEAKER, 0x03, 0x01, 0x0000), AUDIO_V2_AS_DESCRIPTOR_INIT(0x01, 0x02, OUT_CHANNEL_NUM, OUTPUT_CH_ENABLE, HALF_WORD_BYTES, SAMPLE_BITS, AUDIO_OUT_EP, AUDIO_OUT_PACKET, EP_INTERVAL), /////////////////////////////////////// /// string0 descriptor /////////////////////////////////////// USB_LANGID_INIT(USBD_LANGID_STRING), /////////////////////////////////////// /// string1 descriptor /////////////////////////////////////// 0x14, /* bLength */ USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */ 'C', 0x00, /* wcChar0 */ 'h', 0x00, /* wcChar1 */ 'e', 0x00, /* wcChar2 */ 'r', 0x00, /* wcChar3 */ 'r', 0x00, /* wcChar4 */ 'y', 0x00, /* wcChar5 */ 'U', 0x00, /* wcChar6 */ 'S', 0x00, /* wcChar7 */ 'B', 0x00, /* wcChar8 */ /////////////////////////////////////// /// string2 descriptor /////////////////////////////////////// 0x26, /* bLength */ USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */ 'C', 0x00, /* wcChar0 */ 'h', 0x00, /* wcChar1 */ 'e', 0x00, /* wcChar2 */ 'r', 0x00, /* wcChar3 */ 'r', 0x00, /* wcChar4 */ 'y', 0x00, /* wcChar5 */ 'U', 0x00, /* wcChar6 */ 'S', 0x00, /* wcChar7 */ 'B', 0x00, /* wcChar8 */ ' ', 0x00, /* wcChar9 */ 'U', 0x00, /* wcChar10 */ 'A', 0x00, /* wcChar11 */ 'C', 0x00, /* wcChar12 */ ' ', 0x00, /* wcChar13 */ 'D', 0x00, /* wcChar14 */ 'E', 0x00, /* wcChar15 */ 'M', 0x00, /* wcChar16 */ 'O', 0x00, /* wcChar17 */ /////////////////////////////////////// /// string3 descriptor /////////////////////////////////////// 0x16, /* bLength */ USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */ '2', 0x00, /* wcChar0 */ '0', 0x00, /* wcChar1 */ '2', 0x00, /* wcChar2 */ '1', 0x00, /* wcChar3 */ '0', 0x00, /* wcChar4 */ '3', 0x00, /* wcChar5 */ '1', 0x00, /* wcChar6 */ '0', 0x00, /* wcChar7 */ '0', 0x00, /* wcChar8 */ '3', 0x00, /* wcChar9 */ #ifdef CONFIG_USB_HS /////////////////////////////////////// /// device qualifier descriptor /////////////////////////////////////// 0x0a, USB_DESCRIPTOR_TYPE_DEVICE_QUALIFIER, 0x00, 0x02, 0x00, 0x00, 0x00, 0x40, 0x01, 0x00, #endif 0x00 }; volatile bool rx_flag = 0; void usbd_audio_open(uint8_t intf) { rx_flag = 1; USB_LOG_RAW("OPEN\r\n"); } void usbd_audio_close(uint8_t intf) { USB_LOG_RAW("CLOSE\r\n"); rx_flag = 0; } static usbd_class_t audio_class; static usbd_interface_t audio_control_intf; static usbd_interface_t audio_stream_intf; void usbd_audio_iso_callback(uint8_t ep) { } static usbd_endpoint_t audio_in_ep = { .ep_cb = usbd_audio_iso_callback, .ep_addr = AUDIO_OUT_EP }; void audio_init() { usbd_desc_register(audio_descriptor); usbd_audio_add_interface(&audio_class, &audio_control_intf); usbd_audio_add_interface(&audio_class, &audio_stream_intf); usbd_interface_add_endpoint(&audio_stream_intf, &audio_in_ep); usbd_audio_add_entity(0x01, AUDIO_CONTROL_CLOCK_SOURCE); usbd_audio_add_entity(0x03, AUDIO_CONTROL_FEATURE_UNIT); usbd_initialize(); } void audio_test() { while (1) { if (rx_flag) { } } }