259 lines
9.3 KiB
C
259 lines
9.3 KiB
C
#include "usbd_core.h"
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#include "usbd_audio.h"
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#define USBD_VID 0xffff
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#define USBD_PID 0xffff
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#define USBD_MAX_POWER 100
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#define USBD_LANGID_STRING 1033
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#ifdef CONFIG_USB_HS
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#define EP_INTERVAL 0x04
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#else
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#define EP_INTERVAL 0x01
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#endif
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#define AUDIO_IN_EP 0x81
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#define AUDIO_OUT_EP 0x02
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#define AUDIO_IN_FU_ID 0x02
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#define AUDIO_OUT_FU_ID 0x05
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/* AUDIO Class Config */
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#define AUDIO_SPEAKER_FREQ 16000U
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#define AUDIO_SPEAKER_FRAME_SIZE_BYTE 2u
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#define AUDIO_SPEAKER_RESOLUTION_BIT 16u
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#define AUDIO_MIC_FREQ 16000U
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#define AUDIO_MIC_FRAME_SIZE_BYTE 2u
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#define AUDIO_MIC_RESOLUTION_BIT 16u
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#define AUDIO_SAMPLE_FREQ(frq) (uint8_t)(frq), (uint8_t)((frq >> 8)), (uint8_t)((frq >> 16))
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/* AudioFreq * DataSize (2 bytes) * NumChannels (Stereo: 2) */
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#define AUDIO_OUT_PACKET ((uint32_t)((AUDIO_SPEAKER_FREQ * AUDIO_SPEAKER_FRAME_SIZE_BYTE * 2) / 1000))
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/* 16bit(2 Bytes) 双声道(Mono:2) */
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#define AUDIO_IN_PACKET ((uint32_t)((AUDIO_MIC_FREQ * AUDIO_MIC_FRAME_SIZE_BYTE * 2) / 1000))
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#define USB_AUDIO_CONFIG_DESC_SIZ (unsigned long)(9 + \
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AUDIO_AC_DESCRIPTOR_INIT_LEN(2) + \
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AUDIO_SIZEOF_AC_INPUT_TERMINAL_DESC + \
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AUDIO_SIZEOF_AC_FEATURE_UNIT_DESC(2, 1) + \
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AUDIO_SIZEOF_AC_OUTPUT_TERMINAL_DESC + \
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AUDIO_SIZEOF_AC_INPUT_TERMINAL_DESC + \
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AUDIO_SIZEOF_AC_FEATURE_UNIT_DESC(2, 1) + \
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AUDIO_SIZEOF_AC_OUTPUT_TERMINAL_DESC + \
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AUDIO_AS_DESCRIPTOR_INIT_LEN(1) + \
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AUDIO_AS_DESCRIPTOR_INIT_LEN(1))
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#define AUDIO_AC_SIZ (AUDIO_SIZEOF_AC_HEADER_DESC(2) + \
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AUDIO_SIZEOF_AC_INPUT_TERMINAL_DESC + \
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AUDIO_SIZEOF_AC_FEATURE_UNIT_DESC(2, 1) + \
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AUDIO_SIZEOF_AC_OUTPUT_TERMINAL_DESC + \
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AUDIO_SIZEOF_AC_INPUT_TERMINAL_DESC + \
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AUDIO_SIZEOF_AC_FEATURE_UNIT_DESC(2, 1) + \
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AUDIO_SIZEOF_AC_OUTPUT_TERMINAL_DESC)
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const uint8_t audio_v1_descriptor[] = {
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USB_DEVICE_DESCRIPTOR_INIT(USB_2_0, 0xef, 0x02, 0x01, USBD_VID, USBD_PID, 0x0001, 0x01),
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USB_CONFIG_DESCRIPTOR_INIT(USB_AUDIO_CONFIG_DESC_SIZ, 0x03, 0x01, USB_CONFIG_BUS_POWERED, USBD_MAX_POWER),
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AUDIO_AC_DESCRIPTOR_INIT(0x00, 0x03, AUDIO_AC_SIZ, 0x00, 0x01, 0x02),
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AUDIO_AC_INPUT_TERMINAL_DESCRIPTOR_INIT(0x01, AUDIO_INTERM_MIC, 0x02, 0x0003),
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AUDIO_AC_FEATURE_UNIT_DESCRIPTOR_INIT(0x02, 0x01, 0x01, 0x03, 0x00, 0x00),
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AUDIO_AC_OUTPUT_TERMINAL_DESCRIPTOR_INIT(0x03, AUDIO_TERMINAL_STREAMING, 0x02),
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AUDIO_AC_INPUT_TERMINAL_DESCRIPTOR_INIT(0x04, AUDIO_TERMINAL_STREAMING, 0x02, 0x0003),
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AUDIO_AC_FEATURE_UNIT_DESCRIPTOR_INIT(0x05, 0x04, 0x01, 0x03, 0x00, 0x00),
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AUDIO_AC_OUTPUT_TERMINAL_DESCRIPTOR_INIT(0x06, AUDIO_OUTTERM_SPEAKER, 0x05),
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AUDIO_AS_DESCRIPTOR_INIT(0x01, 0x04, 0x02, AUDIO_SPEAKER_FRAME_SIZE_BYTE, AUDIO_SPEAKER_RESOLUTION_BIT, AUDIO_OUT_EP, 0x09, AUDIO_OUT_PACKET,
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EP_INTERVAL, AUDIO_SAMPLE_FREQ_3B(AUDIO_SPEAKER_FREQ)),
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AUDIO_AS_DESCRIPTOR_INIT(0x02, 0x03, 0x02, AUDIO_MIC_FRAME_SIZE_BYTE, AUDIO_MIC_RESOLUTION_BIT, AUDIO_IN_EP, 0x05, AUDIO_IN_PACKET,
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EP_INTERVAL, AUDIO_SAMPLE_FREQ_3B(AUDIO_MIC_FREQ)),
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///////////////////////////////////////
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/// string0 descriptor
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///////////////////////////////////////
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USB_LANGID_INIT(USBD_LANGID_STRING),
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///////////////////////////////////////
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/// string1 descriptor
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///////////////////////////////////////
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0x14, /* bLength */
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USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
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'C', 0x00, /* wcChar0 */
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'h', 0x00, /* wcChar1 */
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'e', 0x00, /* wcChar2 */
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'r', 0x00, /* wcChar3 */
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'r', 0x00, /* wcChar4 */
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'y', 0x00, /* wcChar5 */
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'U', 0x00, /* wcChar6 */
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'S', 0x00, /* wcChar7 */
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'B', 0x00, /* wcChar8 */
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///////////////////////////////////////
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/// string2 descriptor
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///////////////////////////////////////
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0x26, /* bLength */
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USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
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'C', 0x00, /* wcChar0 */
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'h', 0x00, /* wcChar1 */
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'e', 0x00, /* wcChar2 */
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'r', 0x00, /* wcChar3 */
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'r', 0x00, /* wcChar4 */
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'y', 0x00, /* wcChar5 */
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'U', 0x00, /* wcChar6 */
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'S', 0x00, /* wcChar7 */
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'B', 0x00, /* wcChar8 */
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' ', 0x00, /* wcChar9 */
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'U', 0x00, /* wcChar10 */
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'A', 0x00, /* wcChar11 */
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'C', 0x00, /* wcChar12 */
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' ', 0x00, /* wcChar13 */
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'D', 0x00, /* wcChar14 */
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'E', 0x00, /* wcChar15 */
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'M', 0x00, /* wcChar16 */
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'O', 0x00, /* wcChar17 */
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///////////////////////////////////////
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/// string3 descriptor
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///////////////////////////////////////
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0x16, /* bLength */
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USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
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'2', 0x00, /* wcChar0 */
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'0', 0x00, /* wcChar1 */
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'2', 0x00, /* wcChar2 */
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'1', 0x00, /* wcChar3 */
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'0', 0x00, /* wcChar4 */
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'3', 0x00, /* wcChar5 */
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'1', 0x00, /* wcChar6 */
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'0', 0x00, /* wcChar7 */
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'0', 0x00, /* wcChar8 */
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'1', 0x00, /* wcChar9 */
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#ifdef CONFIG_USB_HS
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///////////////////////////////////////
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/// device qualifier descriptor
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///////////////////////////////////////
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0x0a,
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USB_DESCRIPTOR_TYPE_DEVICE_QUALIFIER,
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0x00,
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0x02,
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0x00,
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0x00,
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0x00,
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0x40,
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0x01,
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0x00,
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#endif
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0x00
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};
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USB_NOCACHE_RAM_SECTION USB_MEM_ALIGNX uint8_t read_buffer[AUDIO_OUT_PACKET];
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USB_NOCACHE_RAM_SECTION USB_MEM_ALIGNX uint8_t write_buffer[AUDIO_IN_PACKET];
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volatile bool tx_flag = 0;
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volatile bool rx_flag = 0;
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volatile bool ep_tx_busy_flag = false;
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void usbd_event_handler(uint8_t event)
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{
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switch (event) {
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case USBD_EVENT_RESET:
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break;
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case USBD_EVENT_CONNECTED:
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break;
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case USBD_EVENT_DISCONNECTED:
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break;
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case USBD_EVENT_RESUME:
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break;
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case USBD_EVENT_SUSPEND:
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break;
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case USBD_EVENT_CONFIGURED:
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break;
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case USBD_EVENT_SET_REMOTE_WAKEUP:
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break;
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case USBD_EVENT_CLR_REMOTE_WAKEUP:
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break;
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default:
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break;
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}
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}
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void usbd_audio_open(uint8_t intf)
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{
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if (intf == 1) {
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rx_flag = 1;
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/* setup first out ep read transfer */
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usbd_ep_start_read(AUDIO_OUT_EP, read_buffer, AUDIO_OUT_PACKET);
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printf("OPEN1\r\n");
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} else {
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tx_flag = 1;
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printf("OPEN2\r\n");
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}
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}
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void usbd_audio_close(uint8_t intf)
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{
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if (intf == 1) {
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rx_flag = 1;
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printf("CLOSE1\r\n");
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} else {
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tx_flag = 0;
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printf("CLOSE2\r\n");
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}
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}
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void usbd_audio_out_callback(uint8_t ep, uint32_t nbytes)
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{
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USB_LOG_RAW("actual out len:%d\r\n", nbytes);
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usbd_ep_start_read(AUDIO_OUT_EP, read_buffer, AUDIO_OUT_PACKET);
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}
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void usbd_audio_in_callback(uint8_t ep, uint32_t nbytes)
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{
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USB_LOG_RAW("actual in len:%d\r\n", nbytes);
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ep_tx_busy_flag = false;
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}
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static struct usbd_endpoint audio_in_ep = {
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.ep_cb = usbd_audio_in_callback,
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.ep_addr = AUDIO_IN_EP
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};
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static struct usbd_endpoint audio_out_ep = {
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.ep_cb = usbd_audio_out_callback,
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.ep_addr = AUDIO_OUT_EP
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};
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struct usbd_interface intf0;
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struct usbd_interface intf1;
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struct usbd_interface intf2;
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struct audio_entity_info audio_entity_table[] = {
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{ .bEntityId = AUDIO_IN_FU_ID,
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.bDescriptorSubtype = AUDIO_CONTROL_FEATURE_UNIT,
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.ep = AUDIO_IN_EP },
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{ .bEntityId = AUDIO_OUT_FU_ID,
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.bDescriptorSubtype = AUDIO_CONTROL_FEATURE_UNIT,
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.ep = AUDIO_OUT_EP },
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};
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void audio_v1_init(void)
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{
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usbd_desc_register(audio_v1_descriptor);
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usbd_add_interface(usbd_audio_init_intf(&intf0, 0x0100, audio_entity_table, 2));
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usbd_add_interface(usbd_audio_init_intf(&intf1, 0x0100, audio_entity_table, 2));
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usbd_add_interface(usbd_audio_init_intf(&intf2, 0x0100, audio_entity_table, 2));
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usbd_add_endpoint(&audio_in_ep);
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usbd_add_endpoint(&audio_out_ep);
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usbd_initialize();
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}
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void audio_v1_test(void)
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{
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if (tx_flag) {
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memset(write_buffer, 'a', AUDIO_IN_PACKET);
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ep_tx_busy_flag = true;
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usbd_ep_start_write(AUDIO_IN_EP, write_buffer, AUDIO_IN_PACKET);
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while (ep_tx_busy_flag) {
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if (tx_flag == false) {
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break;
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}
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}
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}
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}
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