/* * Copyright (c) 2024, sakumisu * * SPDX-License-Identifier: Apache-2.0 */ #include "usbd_core.h" #include "usbd_audio.h" #define USING_FEEDBACK 0 #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 #define FEEDBACK_ENDP_PACKET_SIZE 0x04 #else #define EP_INTERVAL 0x01 #define FEEDBACK_ENDP_PACKET_SIZE 0x03 #endif #define AUDIO_IN_EP 0x81 #define AUDIO_OUT_EP 0x02 #define AUDIO_OUT_FEEDBACK_EP 0x83 #define AUDIO_IN_FU_ID 0x02 #define AUDIO_OUT_FU_ID 0x05 /* AUDIO Class Config */ #define AUDIO_SPEAKER_FREQ 16000U #define AUDIO_SPEAKER_FRAME_SIZE_BYTE 2u #define AUDIO_SPEAKER_RESOLUTION_BIT 16u #define AUDIO_MIC_FREQ 16000U #define AUDIO_MIC_FRAME_SIZE_BYTE 2u #define AUDIO_MIC_RESOLUTION_BIT 16u #define AUDIO_SAMPLE_FREQ(frq) (uint8_t)(frq), (uint8_t)((frq >> 8)), (uint8_t)((frq >> 16)) /* AudioFreq * DataSize (2 bytes) * NumChannels (Stereo: 2) */ #define AUDIO_OUT_PACKET ((uint32_t)((AUDIO_SPEAKER_FREQ * AUDIO_SPEAKER_FRAME_SIZE_BYTE * 2) / 1000)) /* 16bit(2 Bytes) 双声道(Mono:2) */ #define AUDIO_IN_PACKET ((uint32_t)((AUDIO_MIC_FREQ * AUDIO_MIC_FRAME_SIZE_BYTE * 2) / 1000)) #if USING_FEEDBACK == 0 #define USB_AUDIO_CONFIG_DESC_SIZ (unsigned long)(9 + \ AUDIO_AC_DESCRIPTOR_INIT_LEN(2) + \ AUDIO_SIZEOF_AC_INPUT_TERMINAL_DESC + \ AUDIO_SIZEOF_AC_FEATURE_UNIT_DESC(2, 1) + \ AUDIO_SIZEOF_AC_OUTPUT_TERMINAL_DESC + \ AUDIO_SIZEOF_AC_INPUT_TERMINAL_DESC + \ AUDIO_SIZEOF_AC_FEATURE_UNIT_DESC(2, 1) + \ AUDIO_SIZEOF_AC_OUTPUT_TERMINAL_DESC + \ AUDIO_AS_DESCRIPTOR_INIT_LEN(1) + \ AUDIO_AS_DESCRIPTOR_INIT_LEN(1)) #else #define USB_AUDIO_CONFIG_DESC_SIZ (unsigned long)(9 + \ AUDIO_AC_DESCRIPTOR_INIT_LEN(2) + \ AUDIO_SIZEOF_AC_INPUT_TERMINAL_DESC + \ AUDIO_SIZEOF_AC_FEATURE_UNIT_DESC(2, 1) + \ AUDIO_SIZEOF_AC_OUTPUT_TERMINAL_DESC + \ AUDIO_SIZEOF_AC_INPUT_TERMINAL_DESC + \ AUDIO_SIZEOF_AC_FEATURE_UNIT_DESC(2, 1) + \ AUDIO_SIZEOF_AC_OUTPUT_TERMINAL_DESC + \ AUDIO_AS_DESCRIPTOR_INIT_LEN(1) + \ AUDIO_AS_FEEDBACK_DESCRIPTOR_INIT_LEN(1)) #endif #define AUDIO_AC_SIZ (AUDIO_SIZEOF_AC_HEADER_DESC(2) + \ AUDIO_SIZEOF_AC_INPUT_TERMINAL_DESC + \ AUDIO_SIZEOF_AC_FEATURE_UNIT_DESC(2, 1) + \ AUDIO_SIZEOF_AC_OUTPUT_TERMINAL_DESC + \ AUDIO_SIZEOF_AC_INPUT_TERMINAL_DESC + \ AUDIO_SIZEOF_AC_FEATURE_UNIT_DESC(2, 1) + \ AUDIO_SIZEOF_AC_OUTPUT_TERMINAL_DESC) #ifdef CONFIG_USBDEV_ADVANCE_DESC static const uint8_t device_descriptor[] = { USB_DEVICE_DESCRIPTOR_INIT(USB_2_0, 0xef, 0x02, 0x01, USBD_VID, USBD_PID, 0x0001, 0x01) }; static const uint8_t config_descriptor[] = { USB_CONFIG_DESCRIPTOR_INIT(USB_AUDIO_CONFIG_DESC_SIZ, 0x03, 0x01, USB_CONFIG_BUS_POWERED, USBD_MAX_POWER), AUDIO_AC_DESCRIPTOR_INIT(0x00, 0x03, AUDIO_AC_SIZ, 0x00, 0x01, 0x02), AUDIO_AC_INPUT_TERMINAL_DESCRIPTOR_INIT(0x01, AUDIO_INTERM_MIC, 0x02, 0x0003), AUDIO_AC_FEATURE_UNIT_DESCRIPTOR_INIT(0x02, 0x01, 0x01, 0x03, 0x00, 0x00), AUDIO_AC_OUTPUT_TERMINAL_DESCRIPTOR_INIT(0x03, AUDIO_TERMINAL_STREAMING, 0x02), AUDIO_AC_INPUT_TERMINAL_DESCRIPTOR_INIT(0x04, AUDIO_TERMINAL_STREAMING, 0x02, 0x0003), AUDIO_AC_FEATURE_UNIT_DESCRIPTOR_INIT(0x05, 0x04, 0x01, 0x03, 0x00, 0x00), AUDIO_AC_OUTPUT_TERMINAL_DESCRIPTOR_INIT(0x06, AUDIO_OUTTERM_SPEAKER, 0x05), #if USING_FEEDBACK == 0 AUDIO_AS_DESCRIPTOR_INIT(0x01, 0x04, 0x02, AUDIO_SPEAKER_FRAME_SIZE_BYTE, AUDIO_SPEAKER_RESOLUTION_BIT, AUDIO_OUT_EP, 0x09, AUDIO_OUT_PACKET, EP_INTERVAL, AUDIO_SAMPLE_FREQ_3B(AUDIO_SPEAKER_FREQ)), #else AUDIO_AS_FEEDBACK_DESCRIPTOR_INIT(0x01, 0x04, 0x02, AUDIO_SPEAKER_FRAME_SIZE_BYTE, AUDIO_SPEAKER_RESOLUTION_BIT, AUDIO_OUT_EP, AUDIO_OUT_PACKET, EP_INTERVAL, AUDIO_OUT_FEEDBACK_EP, AUDIO_SAMPLE_FREQ_3B(AUDIO_SPEAKER_FREQ)), #endif AUDIO_AS_DESCRIPTOR_INIT(0x02, 0x03, 0x02, AUDIO_MIC_FRAME_SIZE_BYTE, AUDIO_MIC_RESOLUTION_BIT, AUDIO_IN_EP, 0x05, AUDIO_IN_PACKET, EP_INTERVAL, AUDIO_SAMPLE_FREQ_3B(AUDIO_MIC_FREQ)) }; static const uint8_t device_quality_descriptor[] = { /////////////////////////////////////// /// device qualifier descriptor /////////////////////////////////////// 0x0a, USB_DESCRIPTOR_TYPE_DEVICE_QUALIFIER, 0x00, 0x02, 0x00, 0x00, 0x00, 0x40, 0x00, 0x00, }; static const char *string_descriptors[] = { (const char[]){ 0x09, 0x04 }, /* Langid */ "CherryUSB", /* Manufacturer */ "CherryUSB UAC DEMO", /* Product */ "2022123456", /* Serial Number */ }; static const uint8_t *device_descriptor_callback(uint8_t speed) { return device_descriptor; } static const uint8_t *config_descriptor_callback(uint8_t speed) { return config_descriptor; } static const uint8_t *device_quality_descriptor_callback(uint8_t speed) { return device_quality_descriptor; } static const char *string_descriptor_callback(uint8_t speed, uint8_t index) { if (index > 3) { return NULL; } return string_descriptors[index]; } const struct usb_descriptor audio_v1_descriptor = { .device_descriptor_callback = device_descriptor_callback, .config_descriptor_callback = config_descriptor_callback, .device_quality_descriptor_callback = device_quality_descriptor_callback, .string_descriptor_callback = string_descriptor_callback }; #else const uint8_t audio_v1_descriptor[] = { USB_DEVICE_DESCRIPTOR_INIT(USB_2_0, 0xef, 0x02, 0x01, USBD_VID, USBD_PID, 0x0001, 0x01), USB_CONFIG_DESCRIPTOR_INIT(USB_AUDIO_CONFIG_DESC_SIZ, 0x03, 0x01, USB_CONFIG_BUS_POWERED, USBD_MAX_POWER), AUDIO_AC_DESCRIPTOR_INIT(0x00, 0x03, AUDIO_AC_SIZ, 0x00, 0x01, 0x02), AUDIO_AC_INPUT_TERMINAL_DESCRIPTOR_INIT(0x01, AUDIO_INTERM_MIC, 0x02, 0x0003), AUDIO_AC_FEATURE_UNIT_DESCRIPTOR_INIT(0x02, 0x01, 0x01, 0x03, 0x00, 0x00), AUDIO_AC_OUTPUT_TERMINAL_DESCRIPTOR_INIT(0x03, AUDIO_TERMINAL_STREAMING, 0x02), AUDIO_AC_INPUT_TERMINAL_DESCRIPTOR_INIT(0x04, AUDIO_TERMINAL_STREAMING, 0x02, 0x0003), AUDIO_AC_FEATURE_UNIT_DESCRIPTOR_INIT(0x05, 0x04, 0x01, 0x03, 0x00, 0x00), AUDIO_AC_OUTPUT_TERMINAL_DESCRIPTOR_INIT(0x06, AUDIO_OUTTERM_SPEAKER, 0x05), #if USING_FEEDBACK == 0 AUDIO_AS_DESCRIPTOR_INIT(0x01, 0x04, 0x02, AUDIO_SPEAKER_FRAME_SIZE_BYTE, AUDIO_SPEAKER_RESOLUTION_BIT, AUDIO_OUT_EP, 0x09, AUDIO_OUT_PACKET, EP_INTERVAL, AUDIO_SAMPLE_FREQ_3B(AUDIO_SPEAKER_FREQ)), #else AUDIO_AS_FEEDBACK_DESCRIPTOR_INIT(0x01, 0x04, 0x02, AUDIO_SPEAKER_FRAME_SIZE_BYTE, AUDIO_SPEAKER_RESOLUTION_BIT, AUDIO_OUT_EP, AUDIO_OUT_PACKET, EP_INTERVAL, AUDIO_OUT_FEEDBACK_EP, AUDIO_SAMPLE_FREQ_3B(AUDIO_SPEAKER_FREQ)), #endif AUDIO_AS_DESCRIPTOR_INIT(0x02, 0x03, 0x02, AUDIO_MIC_FRAME_SIZE_BYTE, AUDIO_MIC_RESOLUTION_BIT, AUDIO_IN_EP, 0x05, AUDIO_IN_PACKET, EP_INTERVAL, AUDIO_SAMPLE_FREQ_3B(AUDIO_MIC_FREQ)), /////////////////////////////////////// /// 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 */ '2', 0x00, /* wcChar3 */ '1', 0x00, /* wcChar4 */ '2', 0x00, /* wcChar5 */ '3', 0x00, /* wcChar6 */ '4', 0x00, /* wcChar7 */ '5', 0x00, /* wcChar8 */ #if USING_FEEDBACK == 0 '1', 0x00, /* wcChar9 */ #else '2', 0x00, /* wcChar9 */ #endif #ifdef CONFIG_USB_HS /////////////////////////////////////// /// device qualifier descriptor /////////////////////////////////////// 0x0a, USB_DESCRIPTOR_TYPE_DEVICE_QUALIFIER, 0x00, 0x02, 0x00, 0x00, 0x00, 0x40, 0x00, 0x00, #endif 0x00 }; #endif USB_NOCACHE_RAM_SECTION USB_MEM_ALIGNX uint8_t read_buffer[AUDIO_OUT_PACKET]; USB_NOCACHE_RAM_SECTION USB_MEM_ALIGNX uint8_t write_buffer[AUDIO_IN_PACKET]; USB_NOCACHE_RAM_SECTION USB_MEM_ALIGNX uint8_t s_speaker_feedback_buffer[4]; volatile bool tx_flag = 0; volatile bool rx_flag = 0; volatile bool ep_tx_busy_flag = false; volatile uint32_t s_mic_sample_rate; volatile uint32_t s_speaker_sample_rate; static void usbd_event_handler(uint8_t busid, uint8_t event) { switch (event) { case USBD_EVENT_RESET: break; case USBD_EVENT_CONNECTED: break; case USBD_EVENT_DISCONNECTED: break; case USBD_EVENT_RESUME: break; case USBD_EVENT_SUSPEND: break; case USBD_EVENT_CONFIGURED: break; case USBD_EVENT_SET_REMOTE_WAKEUP: break; case USBD_EVENT_CLR_REMOTE_WAKEUP: break; default: break; } } void usbd_audio_open(uint8_t busid, uint8_t intf) { if (intf == 1) { rx_flag = 1; /* setup first out ep read transfer */ usbd_ep_start_read(busid, AUDIO_OUT_EP, read_buffer, AUDIO_OUT_PACKET); #if USING_FEEDBACK == 1 uint32_t feedback_value = AUDIO_FREQ_TO_FEEDBACK_FS(s_speaker_sample_rate); AUDIO_FEEDBACK_TO_BUF_FS(s_speaker_feedback_buffer, feedback_value); /* uac1 can only use 10.14 */ usbd_ep_start_write(busid, AUDIO_OUT_FEEDBACK_EP, s_speaker_feedback_buffer, FEEDBACK_ENDP_PACKET_SIZE); #endif USB_LOG_INFO("OPEN1\r\n"); } else { tx_flag = 1; ep_tx_busy_flag = false; USB_LOG_INFO("OPEN2\r\n"); } } void usbd_audio_close(uint8_t busid, uint8_t intf) { if (intf == 1) { rx_flag = 0; USB_LOG_INFO("CLOSE1\r\n"); } else { tx_flag = 0; ep_tx_busy_flag = false; USB_LOG_INFO("CLOSE2\r\n"); } } void usbd_audio_set_sampling_freq(uint8_t busid, uint8_t ep, uint32_t sampling_freq) { if (ep == AUDIO_OUT_EP) { s_speaker_sample_rate = sampling_freq; } else if (ep == AUDIO_IN_EP) { s_mic_sample_rate = sampling_freq; } } uint32_t usbd_audio_get_sampling_freq(uint8_t busid, uint8_t ep) { (void)busid; uint32_t freq = 0; if (ep == AUDIO_OUT_EP) { freq = s_speaker_sample_rate; } else if (ep == AUDIO_IN_EP) { freq = s_mic_sample_rate; } return freq; } void usbd_audio_out_callback(uint8_t busid, uint8_t ep, uint32_t nbytes) { USB_LOG_RAW("actual out len:%d\r\n", (unsigned int)nbytes); usbd_ep_start_read(busid, AUDIO_OUT_EP, read_buffer, AUDIO_OUT_PACKET); } void usbd_audio_in_callback(uint8_t busid, uint8_t ep, uint32_t nbytes) { USB_LOG_RAW("actual in len:%d\r\n", (unsigned int)nbytes); ep_tx_busy_flag = false; } #if USING_FEEDBACK == 1 void usbd_audio_iso_out_feedback_callback(uint8_t busid, uint8_t ep, uint32_t nbytes) { USB_LOG_RAW("actual feedback len:%d\r\n", (unsigned int)nbytes); uint32_t feedback_value = AUDIO_FREQ_TO_FEEDBACK_FS(s_speaker_sample_rate); AUDIO_FEEDBACK_TO_BUF_FS(s_speaker_feedback_buffer, feedback_value); usbd_ep_start_write(busid, AUDIO_OUT_FEEDBACK_EP, s_speaker_feedback_buffer, FEEDBACK_ENDP_PACKET_SIZE); } #endif static struct usbd_endpoint audio_in_ep = { .ep_cb = usbd_audio_in_callback, .ep_addr = AUDIO_IN_EP }; static struct usbd_endpoint audio_out_ep = { .ep_cb = usbd_audio_out_callback, .ep_addr = AUDIO_OUT_EP }; #if USING_FEEDBACK == 1 static struct usbd_endpoint audio_out_feedback_ep = { .ep_cb = usbd_audio_iso_out_feedback_callback, .ep_addr = AUDIO_OUT_FEEDBACK_EP }; #endif struct usbd_interface intf0; struct usbd_interface intf1; struct usbd_interface intf2; struct audio_entity_info audio_entity_table[] = { { .bEntityId = AUDIO_IN_FU_ID, .bDescriptorSubtype = AUDIO_CONTROL_FEATURE_UNIT, .ep = AUDIO_IN_EP }, { .bEntityId = AUDIO_OUT_FU_ID, .bDescriptorSubtype = AUDIO_CONTROL_FEATURE_UNIT, .ep = AUDIO_OUT_EP }, }; void audio_v1_init(uint8_t busid, uintptr_t reg_base) { #ifdef CONFIG_USBDEV_ADVANCE_DESC usbd_desc_register(busid, &audio_v1_descriptor); #else usbd_desc_register(busid, audio_v1_descriptor); #endif usbd_add_interface(busid, usbd_audio_init_intf(busid, &intf0, 0x0100, audio_entity_table, 2)); usbd_add_interface(busid, usbd_audio_init_intf(busid, &intf1, 0x0100, audio_entity_table, 2)); usbd_add_interface(busid, usbd_audio_init_intf(busid, &intf2, 0x0100, audio_entity_table, 2)); usbd_add_endpoint(busid, &audio_in_ep); usbd_add_endpoint(busid, &audio_out_ep); #if USING_FEEDBACK == 1 usbd_add_endpoint(busid, &audio_out_feedback_ep); #endif usbd_initialize(busid, reg_base, usbd_event_handler); } void audio_v1_test(uint8_t busid) { if (tx_flag) { memset(write_buffer, 'a', AUDIO_IN_PACKET); ep_tx_busy_flag = true; usbd_ep_start_write(busid, AUDIO_IN_EP, write_buffer, AUDIO_IN_PACKET); while (ep_tx_busy_flag) { if (tx_flag == false) { break; } } } }