/* * Copyright (c) 2024, sakumisu * * SPDX-License-Identifier: Apache-2.0 */ #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_IN_EP 0x81 #define AUDIO_IN_FU_ID 0x02 /* AUDIO Class Config */ #define AUDIO_FREQ 16000U #define IN_CHANNEL_NUM 1 #if IN_CHANNEL_NUM == 1 #define INPUT_CTRL 0x03, 0x03 #define INPUT_CH_ENABLE 0x0000 #elif IN_CHANNEL_NUM == 2 #define INPUT_CTRL 0x03, 0x03, 0x03 #define INPUT_CH_ENABLE 0x0003 #elif IN_CHANNEL_NUM == 3 #define INPUT_CTRL 0x03, 0x03, 0x03, 0x03 #define INPUT_CH_ENABLE 0x0007 #elif IN_CHANNEL_NUM == 4 #define INPUT_CTRL 0x03, 0x03, 0x03, 0x03, 0x03 #define INPUT_CH_ENABLE 0x000f #elif IN_CHANNEL_NUM == 5 #define INPUT_CTRL 0x03, 0x03, 0x03, 0x03, 0x03, 0x03 #define INPUT_CH_ENABLE 0x001f #elif IN_CHANNEL_NUM == 6 #define INPUT_CTRL 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03 #define INPUT_CH_ENABLE 0x003F #elif IN_CHANNEL_NUM == 7 #define INPUT_CTRL 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03 #define INPUT_CH_ENABLE 0x007f #elif IN_CHANNEL_NUM == 8 #define INPUT_CTRL 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03 #define INPUT_CH_ENABLE 0x00ff #endif /* AudioFreq * DataSize (2 bytes) * NumChannels (Stereo: 1) */ /* 16bit(2 Bytes) 单声道(Mono:1) */ #define AUDIO_IN_PACKET ((uint32_t)((AUDIO_FREQ * 2 * IN_CHANNEL_NUM) / 1000)) #define USB_AUDIO_CONFIG_DESC_SIZ (unsigned long)(9 + \ AUDIO_AC_DESCRIPTOR_INIT_LEN(1) + \ AUDIO_SIZEOF_AC_INPUT_TERMINAL_DESC + \ AUDIO_SIZEOF_AC_FEATURE_UNIT_DESC(IN_CHANNEL_NUM, 1) + \ AUDIO_SIZEOF_AC_OUTPUT_TERMINAL_DESC + \ AUDIO_AS_DESCRIPTOR_INIT_LEN(1)) #define AUDIO_AC_SIZ (AUDIO_SIZEOF_AC_HEADER_DESC(1) + \ AUDIO_SIZEOF_AC_INPUT_TERMINAL_DESC + \ AUDIO_SIZEOF_AC_FEATURE_UNIT_DESC(IN_CHANNEL_NUM, 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, 0x02, 0x01, USB_CONFIG_BUS_POWERED, USBD_MAX_POWER), AUDIO_AC_DESCRIPTOR_INIT(0x00, 0x02, AUDIO_AC_SIZ, 0x00, 0x01), AUDIO_AC_INPUT_TERMINAL_DESCRIPTOR_INIT(0x01, AUDIO_INTERM_MIC, IN_CHANNEL_NUM, INPUT_CH_ENABLE), AUDIO_AC_FEATURE_UNIT_DESCRIPTOR_INIT(AUDIO_IN_FU_ID, 0x01, 0x01, INPUT_CTRL), AUDIO_AC_OUTPUT_TERMINAL_DESCRIPTOR_INIT(0x03, AUDIO_TERMINAL_STREAMING, AUDIO_IN_FU_ID), AUDIO_AS_DESCRIPTOR_INIT(0x01, 0x03, IN_CHANNEL_NUM, 2, 16, AUDIO_IN_EP, 0x05, AUDIO_IN_PACKET, EP_INTERVAL, AUDIO_SAMPLE_FREQ_3B(AUDIO_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, 0x02, 0x01, USB_CONFIG_BUS_POWERED, USBD_MAX_POWER), AUDIO_AC_DESCRIPTOR_INIT(0x00, 0x02, AUDIO_AC_SIZ, 0x00, 0x01), AUDIO_AC_INPUT_TERMINAL_DESCRIPTOR_INIT(0x01, AUDIO_INTERM_MIC, IN_CHANNEL_NUM, INPUT_CH_ENABLE), AUDIO_AC_FEATURE_UNIT_DESCRIPTOR_INIT(AUDIO_IN_FU_ID, 0x01, 0x01, INPUT_CTRL), AUDIO_AC_OUTPUT_TERMINAL_DESCRIPTOR_INIT(0x03, AUDIO_TERMINAL_STREAMING, AUDIO_IN_FU_ID), AUDIO_AS_DESCRIPTOR_INIT(0x01, 0x03, IN_CHANNEL_NUM, 2, 16, AUDIO_IN_EP, 0x05, AUDIO_IN_PACKET, EP_INTERVAL, AUDIO_SAMPLE_FREQ_3B(AUDIO_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 */ '0' + IN_CHANNEL_NUM, 0x00, /* wcChar9 */ #ifdef CONFIG_USB_HS /////////////////////////////////////// /// device qualifier descriptor /////////////////////////////////////// 0x0a, USB_DESCRIPTOR_TYPE_DEVICE_QUALIFIER, 0x00, 0x02, 0x00, 0x00, 0x00, 0x40, 0x00, 0x00, #endif 0x00 }; #endif volatile bool tx_flag = 0; volatile bool ep_tx_busy_flag = false; 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) { tx_flag = 1; ep_tx_busy_flag = false; USB_LOG_RAW("OPEN\r\n"); } void usbd_audio_close(uint8_t busid, uint8_t intf) { USB_LOG_RAW("CLOSE\r\n"); ep_tx_busy_flag = false; tx_flag = 0; } void usbd_audio_iso_callback(uint8_t busid, uint8_t ep, uint32_t nbytes) { USB_LOG_RAW("actual in len:%d\r\n", nbytes); ep_tx_busy_flag = false; } static struct usbd_endpoint audio_in_ep = { .ep_cb = usbd_audio_iso_callback, .ep_addr = AUDIO_IN_EP }; struct usbd_interface intf0; struct usbd_interface intf1; struct audio_entity_info audio_entity_table[] = { { .bEntityId = AUDIO_IN_FU_ID, .bDescriptorSubtype = AUDIO_CONTROL_FEATURE_UNIT, .ep = AUDIO_IN_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, 1)); usbd_add_interface(busid, usbd_audio_init_intf(busid, &intf1, 0x0100, audio_entity_table, 1)); usbd_add_endpoint(busid, &audio_in_ep); usbd_initialize(busid, reg_base, usbd_event_handler); } USB_NOCACHE_RAM_SECTION USB_MEM_ALIGNX uint8_t write_buffer[AUDIO_IN_PACKET]; void audio_test(uint8_t busid) { while (1) { 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; } } } } }