978 lines
31 KiB
C
978 lines
31 KiB
C
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/*
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******************************************************************************
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* @file usb_audio.c
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* @author FreqChip Firmware Team
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* @version V1.0.0
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* @date 2021
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* @brief This file provides the high layer firmware functions to manage the
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* USB Audio Device.
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******************************************************************************
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* @attention
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*
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* Copyright (c) 2021 FreqChip.
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* All rights reserved.
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*
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******************************************************************************
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*/
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#include "usb_audio.h"
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uint8_t gu8_Respond[5];
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uint8_t gu8_AudioReport;
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uint32_t gu32_BitWidthSpeaker;
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uint32_t gu32_BitWidthMic;
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uint32_t gu32_PacketLengthSpeaker;
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uint32_t gu32_PacketLengthMic;
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uint32_t gu32_SamplingFreqSpeaker;
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uint32_t gu32_SamplingFreqMic;
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uint16_t gu16_VolumeSpeaker = USB_AUDIO_VOLUME_MAX;
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uint16_t gu16_VolumeMic = USB_AUDIO_VOLUME_MAX;
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uint8_t gu8_MuteSpeaker = 0x00;
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uint8_t gu8_MuteMic = 0x00;
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/* Audio Set Control */
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typedef enum
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{
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AUDIO_SET_VOL_SPEAKER, /* set Speaker Volume */
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AUDIO_SET_VOL_MIC, /* set Microphone Volume */
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AUDIO_SET_MUTE_SPEAKER, /* set Speaker Mute */
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AUDIO_SET_MUTE_MIC, /* set Microphone Mute */
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AUDIO_SET_SAMPLING_SPEAKER, /* set Speaker Sampling Frequency */
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AUDIO_SET_SAMPLING_MIC, /* set Microphone Sampling Frequency */
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}Audio_SetControl;
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Audio_SetControl ge_CTLIndex;
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/* USB Standard Device Descriptor */
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const uint8_t USB_Audio_DeviceDesc[] =
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{
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0x12, /* bLength */
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0x01, /* bDescriptorType */
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0x00, /* bcdUSB */
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0x02,
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0x00, /* bDeviceClass */
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0x00, /* bDeviceSubClass */
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0x00, /* bDeviceProtocol */
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0x40, /* bMaxPacketSize */
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0xA4, /* idVendor */
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0xA5, /* idVendor */
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0xA6, /* idProduct */
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0xA7, /* idProduct */
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0x00, /* bcdDevice rel. 2.00 */
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0x02,
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0x01, /* Index of manufacturer string */
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0x02, /* Index of product string */
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0x03, /* Index of serial number string */
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0x01, /* bNumConfigurations */
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};
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/* USB Standard Configuration Descriptor */
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const uint8_t USB_Audio_ConfigurationDesc[] =
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{
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/* Configuration Descriptor */
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0x09, /* bLength */
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0x02, /* bDescriptorType */
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0x1C, /* wTotalLength */
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0x01,
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0x04, /* bNumInterfaces */
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0x01, /* bConfigurationValue */
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0x00, /* iConfiguration */
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0xC0, /* bmAttributes */
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0x32, /* bMaxPower */
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/* Audio Interface_0 Descriptor */
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0x09, /* bLength */
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0x04, /* bDescriptorType */
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0x00, /* bInterfaceNumber */
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0x00, /* bAlternateSetting */
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0x00, /* bNumEndpoints */
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0x01, /* bInterfaceClass: Audio */
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0x01, /* bInterfaceSubClass: Audio Control */
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0x00, /* bInterfaceProtocol */
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0x00, /* iInterface */
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/* Audio Control Interface Header Descriptor */
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0x0A, /* bLength */
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0x24, /* bDescriptorType: CS_INTERFACE */
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0x01, /* bDescriptorSubtype: HEADER descriptor subtype */
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0x00, /* bcdADC */
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0x01,
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0x4C, /* wTotalLength */
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0x00,
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0x02, /* bInCollection */
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0x01, /* baInterfaceNr(1) */
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0x02, /* baInterfaceNr(2) */
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/* Audio Control Input Terminal Descriptor */
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0x0C, /* bLength */
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0x24, /* bDescriptorType: CS_INTERFACE */
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0x02, /* bDescriptorSubtype: INPUT_TERMINAL */
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0x01, /* bTerminalID */
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0x01, /* wTerminalType: USB streaming */
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0x01,
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0x00, /* bAssocTerminal */
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0x02, /* bNrChannels */
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0x03, /* wChannelConfig */
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0x00,
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0x00, /* iChannelNames */
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0x00, /* iTerminal */
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/* Audio Control Feature Unit Descriptor */
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0x0D, /* bLength */
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0x24, /* bDescriptorType: CS_INTERFACE */
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0x06, /* bDescriptorSubtype: FEATURE_UNIT */
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0x02, /* bUnitID */
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0x01, /* bSourceID */
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0x02, /* bControlSize */
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0x01,
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0x00,
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0x02,
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0x00,
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0x02,
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0x00,
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0x00, /* iFeature */
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/* Audio Control Output Terminal Descriptor */
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0x09, /* bLength */
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0x24, /* bDescriptorType: CS_INTERFACE */
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0x03, /* bDescriptorSubtype: OUTPUT_TERMINAL */
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0x03, /* bTerminalID */
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0x02, /* wTerminalType: Headphones */
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0x03,
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0x00, /* bAssocTerminal */
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0x02, /* bSourceID */
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0x00, /* iTerminal */
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/* Audio Control Input Terminal Descriptor */
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0x0C, /* bLength */
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0x24, /* bDescriptorType: CS_INTERFACE */
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0x02, /* bDescriptorSubtype: INPUT_TERMINAL */
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0x04, /* bTerminalID */
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0x01, /* wTerminalType: Microphone */
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0x02,
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0x00, /* bAssocTerminal */
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0x01, /* bNrChannels */
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0x04, /* wChannelConfig */
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0x00,
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0x00, /* iChannelNames */
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0x00, /* iTerminal */
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/* Audio Control Feature Unit Descriptor */
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0x0B, /* bLength */
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0x24, /* bDescriptorType: CS_INTERFACE */
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0x06, /* bDescriptorSubtype: FEATURE_UNIT */
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0x05, /* bUnitID */
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0x04, /* bSourceID */
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0x02, /* bControlSize */
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0x01,
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0x00,
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0x02,
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0x00,
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0x00, /* iFeature */
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/* Audio Control Output Terminal Descriptor */
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0x09, /* bLength */
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0x24, /* bDescriptorType: CS_INTERFACE */
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0x03, /* bDescriptorSubtype: OUTPUT_TERMINAL */
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0x06, /* bTerminalID */
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0x01, /* wTerminalType: USB streaming */
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0x01,
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0x00, /* bAssocTerminal */
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0x05, /* bSourceID */
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0x00, /* iTerminal */
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/* Audio Interface_1/0 Descriptor */
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0x09, /* bLength */
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0x04, /* bDescriptorType */
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0x01, /* bInterfaceNumber */
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0x00, /* bAlternateSetting */
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0x00, /* bNumEndpoints */
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0x01, /* bInterfaceClass: Audio */
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0x02, /* bInterfaceSubClass: Audio Streaming */
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0x00, /* bInterfaceProtocol */
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0x00, /* iConfiguration */
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/* HID Interface_1/1 Descriptor */
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0x09, /* bLength */
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0x04, /* bDescriptorType */
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0x01, /* bInterfaceNumber */
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0x01, /* bAlternateSetting */
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0x01, /* bNumEndpoints */
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0x01, /* bInterfaceClass: Audio */
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0x02, /* bInterfaceSubClass: Audio Streaming */
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0x00, /* bInterfaceProtocol */
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0x00, /* iConfiguration */
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/* Class-Specific AS Interface Descriptor */
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0x07, /* bLength */
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0x24, /* bDescriptorType: CS_INTERFACE */
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0x01, /* bDescriptorSubtype: AS_GENERAL */
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0x01, /* bTerminalLink */
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0x00, /* bDelay */
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0x01, /* wFormatTag: PCM */
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0x00,
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/* Class-Specific AS Format Type Descriptor */
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0x14, /* bLength */
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0x24, /* bDescriptorType: CS_INTERFACE */
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0x02, /* bDescriptorSubtype: FORMAT_TYPE */
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0x01, /* bFormatType: FORMAT_TYPE_I */
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0x02, /* bNrChannels */
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2, /* bSubframeSize: 2-Byte */
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16, /* bBitResolution: 16-bit */
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0x04, /* bSamFreqType */
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0x80, /* tSamFreq [1] : 16K */
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0x3E,
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0x00,
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0x00, /* tSamFreq [2] : 32K */
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0x7D,
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0x00,
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0x80, /* tSamFreq [3] : 48K */
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0xBB,
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0x00,
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0x00, /* tSamFreq [4] : 96K */
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0x77,
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0x01,
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/* Endpoint 2 Descriptor */
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0x09, /* bLength */
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0x05, /* bDescriptorType */
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0x02, /* bEndpointAddress: OUT 2 */
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0x0D, /* bmAttributes: Isochronous */
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0x00, /* wMaxPacketSize: 512byte */
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0x02,
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0x01, /* bInterval */
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0x00, /* bRefresh */
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0x00, /* bSynchAddress */
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/* Audio Streaming Isochronous Audio Data Endpoint Descriptor */
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0x07, /* bLength */
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0x25, /* bDescriptorType: CS_ENDPOINT */
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0x01, /* bDescriptorSubtype: EP_GENERAL */
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0x01, /* bmAttributes */
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0x01, /* bLockDelayUnits */
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0x01, /* wLockDelay */
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0x00, /* */
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/* HID Interface_1/2 Descriptor */
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0x09, /* bLength */
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0x04, /* bDescriptorType */
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0x01, /* bInterfaceNumber */
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0x02, /* bAlternateSetting */
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0x01, /* bNumEndpoints */
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0x01, /* bInterfaceClass: Audio */
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0x02, /* bInterfaceSubClass: Audio Streaming */
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0x00, /* bInterfaceProtocol */
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0x00, /* iConfiguration */
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/* Class-Specific AS Interface Descriptor */
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0x07, /* bLength */
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0x24, /* bDescriptorType: CS_INTERFACE */
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0x01, /* bDescriptorSubtype: AS_GENERAL */
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0x01, /* bTerminalLink */
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0x00, /* bDelay */
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0x01, /* wFormatTag: PCM */
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0x00,
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/* Class-Specific AS Format Type Descriptor */
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0x0B, /* bLength */
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0x24, /* bDescriptorType: CS_INTERFACE */
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0x02, /* bDescriptorSubtype: FORMAT_TYPE */
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0x01, /* bFormatType: FORMAT_TYPE_I */
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0x02, /* bNrChannels */
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3, /* bSubframeSize: 3-Byte */
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24, /* bBitResolution: 24-bit */
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0x04, /* bSamFreqType */
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0x80, /* tSamFreq [1] : 48K */
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0xBB,
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0x00,
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/* Endpoint 2 Descriptor */
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0x09, /* bLength */
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0x05, /* bDescriptorType */
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0x02, /* bEndpointAddress: OUT 2 */
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0x0D, /* bmAttributes: Isochronous */
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0x00, /* wMaxPacketSize: 512byte */
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0x02,
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0x01, /* bInterval */
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0x00, /* bRefresh */
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0x00, /* bSynchAddress */
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/* Audio Streaming Isochronous Audio Data Endpoint Descriptor */
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0x07, /* bLength */
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0x25, /* bDescriptorType: CS_ENDPOINT */
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0x01, /* bDescriptorSubtype: EP_GENERAL */
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0x01, /* bmAttributes */
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0x01, /* bLockDelayUnits */
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0x01, /* wLockDelay */
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0x00, /* */
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/* Audio Interface_2/0 Descriptor */
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0x09, /* bLength */
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0x04, /* bDescriptorType */
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0x02, /* bInterfaceNumber */
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0x00, /* bAlternateSetting */
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0x00, /* bNumEndpoints */
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0x01, /* bInterfaceClass: Audio */
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0x02, /* bInterfaceSubClass: Audio Streaming */
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0x00, /* bInterfaceProtocol */
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0x00, /* iConfiguration */
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/* Audio Interface_2/1 Descriptor */
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0x09, /* bLength */
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0x04, /* bDescriptorType */
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0x02, /* bInterfaceNumber */
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0x01, /* bAlternateSetting */
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0x01, /* bNumEndpoints */
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0x01, /* bInterfaceClass: Audio */
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0x02, /* bInterfaceSubClass: Audio Streaming */
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0x00, /* bInterfaceProtocol */
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0x00, /* iConfiguration */
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/* Class-Specific AS Interface Descriptor */
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0x07, /* bLength */
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0x24, /* bDescriptorType: CS_INTERFACE */
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0x01, /* bDescriptorSubtype: AS_GENERAL */
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0x06, /* bTerminalLink */
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0x00, /* bDelay */
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0x01, /* wFormatTag: PCM */
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0x00,
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/* Class-Specific AS Format Type Descriptor */
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0x14, /* bLength */
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0x24, /* bDescriptorType: CS_INTERFACE */
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0x02, /* bDescriptorSubtype: FORMAT_TYPE */
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0x01, /* bFormatType: FORMAT_TYPE_I */
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0x01, /* bNrChannels */
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0x02, /* bSubframeSize */
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0x10, /* bBitResolution */
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0x04, /* bSamFreqType */
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0x80, /* tSamFreq [1] */
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0x3E,
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0x00,
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0x00, /* tSamFreq [2] */
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0x7D,
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0x00,
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0x80, /* tSamFreq [3] */
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0xBB,
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0x00,
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0x00, /* tSamFreq [4] */
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0x77,
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0x01,
|
||
|
|
|
||
|
|
/* Endpoint 1 Descriptor */
|
||
|
|
0x09, /* bLength */
|
||
|
|
0x05, /* bDescriptorType */
|
||
|
|
0x81, /* bEndpointAddress: IN 1 */
|
||
|
|
0x0D, /* bmAttributes: Isochronous */
|
||
|
|
0x00, /* wMaxPacketSize: 256byte */
|
||
|
|
0x01,
|
||
|
|
0x01, /* bInterval */
|
||
|
|
0x00, /* bRefresh */
|
||
|
|
0x00, /* bSynchAddress */
|
||
|
|
|
||
|
|
/* Audio Streaming Isochronous Audio Data Endpoint Descriptor */
|
||
|
|
0x07, /* bLength */
|
||
|
|
0x25, /* bDescriptorType: CS_ENDPOINT */
|
||
|
|
0x01, /* bDescriptorSubtype: EP_GENERAL */
|
||
|
|
0x00, /* bmAttributes */
|
||
|
|
0x01, /* bLockDelayUnits */
|
||
|
|
0x01, /* wLockDelay */
|
||
|
|
0x00,
|
||
|
|
|
||
|
|
/* HID Interface_3/0 Descriptor */
|
||
|
|
0x09, /* bLength */
|
||
|
|
0x04, /* bDescriptorType */
|
||
|
|
0x03, /* bInterfaceNumber */
|
||
|
|
0x00, /* bAlternateSetting */
|
||
|
|
0x01, /* bNumEndpoints */
|
||
|
|
0x03, /* bInterfaceClass: HID */
|
||
|
|
0x00, /* bInterfaceSubClass */
|
||
|
|
0x00, /* bInterfaceProtocol */
|
||
|
|
0x00, /* iConfiguration */
|
||
|
|
|
||
|
|
/* HID Descriptor */
|
||
|
|
0x09, /* bLength */
|
||
|
|
0x21, /* bDescriptorType: HID */
|
||
|
|
0x10, /* bcdHID: 1.10 */
|
||
|
|
0x01,
|
||
|
|
0x21, /* bCountryCode */
|
||
|
|
0x01, /* bNumDescriptors */
|
||
|
|
0x22, /* bDescriptorType: Report */
|
||
|
|
0x2A, /* wDescriptorLength */
|
||
|
|
0x00,
|
||
|
|
|
||
|
|
/* Endpoint 2 Descriptor */
|
||
|
|
0x07, /* bLength */
|
||
|
|
0x05, /* bDescriptorType */
|
||
|
|
0x82, /* bEndpointAddress: IN 2 */
|
||
|
|
0x03, /* bmAttributes: Interrupt */
|
||
|
|
0x02, /* wMaxPacketSize: 2byte */
|
||
|
|
0x00,
|
||
|
|
0x14, /* bInterval: 20ms */
|
||
|
|
};
|
||
|
|
|
||
|
|
/* USB Standard Manufacture Descriptor */
|
||
|
|
const uint8_t USB_Audio_ManufactureDesc[] =
|
||
|
|
{
|
||
|
|
0x12, /* bLength */
|
||
|
|
0x03, /* bDescriptorType */
|
||
|
|
'F', 0x00, /* BString */
|
||
|
|
'R', 0x00,
|
||
|
|
'E', 0x00,
|
||
|
|
'Q', 0x00,
|
||
|
|
'C', 0x00,
|
||
|
|
'H', 0x00,
|
||
|
|
'I', 0x00,
|
||
|
|
'P', 0x00,
|
||
|
|
};
|
||
|
|
|
||
|
|
/* USB Standard Product Descriptor */
|
||
|
|
const uint8_t USB_Audio_ProductDesc[] =
|
||
|
|
{
|
||
|
|
0x1E, /* bLength */
|
||
|
|
0x03, /* bDescriptorType */
|
||
|
|
'F', 0x00, /* BString */
|
||
|
|
'R', 0x00,
|
||
|
|
'E', 0x00,
|
||
|
|
'Q', 0x00,
|
||
|
|
'C', 0x00,
|
||
|
|
'H', 0x00,
|
||
|
|
'I', 0x00,
|
||
|
|
'P', 0x00,
|
||
|
|
'-', 0x00,
|
||
|
|
'A', 0x00,
|
||
|
|
'u', 0x00,
|
||
|
|
'd', 0x00,
|
||
|
|
'i', 0x00,
|
||
|
|
'o', 0x00,
|
||
|
|
};
|
||
|
|
|
||
|
|
/* USB Standard SerialNumber Descriptor */
|
||
|
|
const uint8_t USB_Audio_SerialNumberDesc[] =
|
||
|
|
{
|
||
|
|
0x1E, /* bLength */
|
||
|
|
0x03, /* bDescriptorType */
|
||
|
|
'2', 0x00, /* BString */
|
||
|
|
'0', 0x00,
|
||
|
|
'2', 0x00,
|
||
|
|
'1', 0x00,
|
||
|
|
'-', 0x00,
|
||
|
|
'1', 0x00,
|
||
|
|
'0', 0x00,
|
||
|
|
'0', 0x00,
|
||
|
|
'1', 0x00,
|
||
|
|
'-', 0x00,
|
||
|
|
'B', 0x00,
|
||
|
|
'1', 0x00,
|
||
|
|
'3', 0x00,
|
||
|
|
'6', 0x00,
|
||
|
|
};
|
||
|
|
|
||
|
|
/* USB Standard LanuageID Descriptor */
|
||
|
|
const uint8_t USB_Audio_LanuageIDDesc[] =
|
||
|
|
{
|
||
|
|
0x04, /* bLength */
|
||
|
|
0x03, /* bDescriptorType */
|
||
|
|
0x09, /* BString */
|
||
|
|
0x04,
|
||
|
|
};
|
||
|
|
|
||
|
|
/* HID device report Descriptor */
|
||
|
|
uint8_t USB_HID_Audio_ReportDesc[] =
|
||
|
|
{
|
||
|
|
0x2A, /* Length */
|
||
|
|
|
||
|
|
0x06, 0x0C, 0x00,
|
||
|
|
0x09, 0x01,
|
||
|
|
0xA1, 0x01,
|
||
|
|
0x25, 0x01,
|
||
|
|
0x15, 0x00,
|
||
|
|
0x0A, 0xE2, 0x00, /* Mute */
|
||
|
|
0x0A, 0xEA, 0x00, /* Volume Decrement */
|
||
|
|
0x0A, 0xE9, 0x00, /* Volume Increment */
|
||
|
|
0x0A, 0xB6, 0x00, /* Scan Previous Track */
|
||
|
|
0x0A, 0xCD, 0x00, /* Play/Pause */
|
||
|
|
0x0A, 0xB5, 0x00, /* Scan Next Track */
|
||
|
|
0x0A, 0xB7, 0x00, /* STOP */
|
||
|
|
0x0A, 0xB7, 0x00, /* STOP */
|
||
|
|
0x75, 0x01,
|
||
|
|
0x95, 0x08,
|
||
|
|
0x81, 0x02,
|
||
|
|
0xC0,
|
||
|
|
};
|
||
|
|
|
||
|
|
/*********************************************************************
|
||
|
|
* @fn usb_hid_set_Audio_report
|
||
|
|
*
|
||
|
|
* @brief set report
|
||
|
|
*/
|
||
|
|
void usb_hid_set_Audio_report(uint8_t fu8_Value)
|
||
|
|
{
|
||
|
|
gu8_AudioReport = fu8_Value;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*********************************************************************
|
||
|
|
* @fn usb_hid_send_Audio_report
|
||
|
|
*
|
||
|
|
* @brief set report
|
||
|
|
*/
|
||
|
|
int usb_hid_send_Audio_report(void)
|
||
|
|
{
|
||
|
|
usb_selecet_endpoint(ENDPOINT_2);
|
||
|
|
|
||
|
|
if (usb_Endpoints_GET_TxPktRdy() == false)
|
||
|
|
{
|
||
|
|
usb_write_fifo(ENDPOINT_2, &gu8_AudioReport, 1);
|
||
|
|
usb_Endpoints_SET_TxPktRdy();
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
return -1;
|
||
|
|
}
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*********************************************************************
|
||
|
|
* @fn usb_Audio_SetControl
|
||
|
|
*
|
||
|
|
* @brief Set Speaker volume, Set microphone volume
|
||
|
|
* Set Speaker Mute, Set microphone Mute
|
||
|
|
* Set Speaker sampling frequency, Set microphone sampling frequency
|
||
|
|
*/
|
||
|
|
static void usb_Audio_SetControl(void)
|
||
|
|
{
|
||
|
|
uint8_t lu8_RxCount;
|
||
|
|
|
||
|
|
lu8_RxCount = usb_Endpoint0_get_RxCount();
|
||
|
|
|
||
|
|
switch (ge_CTLIndex)
|
||
|
|
{
|
||
|
|
case AUDIO_SET_VOL_SPEAKER: usb_read_fifo(ENDPOINT_0, (uint8_t *)&gu16_VolumeSpeaker, lu8_RxCount); break;
|
||
|
|
case AUDIO_SET_VOL_MIC: usb_read_fifo(ENDPOINT_0, (uint8_t *)&gu16_VolumeMic, lu8_RxCount); break;
|
||
|
|
case AUDIO_SET_MUTE_SPEAKER: usb_read_fifo(ENDPOINT_0, (uint8_t *)&gu8_MuteSpeaker, lu8_RxCount); break;
|
||
|
|
case AUDIO_SET_MUTE_MIC: usb_read_fifo(ENDPOINT_0, (uint8_t *)&gu8_MuteMic, lu8_RxCount); break;
|
||
|
|
case AUDIO_SET_SAMPLING_SPEAKER:
|
||
|
|
{
|
||
|
|
usb_read_fifo(ENDPOINT_0, (uint8_t *)&gu32_SamplingFreqSpeaker, lu8_RxCount);
|
||
|
|
|
||
|
|
void usb_Audio_ChangeSamplingRate_callback(uint8_t Index);
|
||
|
|
usb_Audio_ChangeSamplingRate_callback(AUDIO_SET_SAMPLING_SPEAKER);
|
||
|
|
}break;
|
||
|
|
case AUDIO_SET_SAMPLING_MIC:
|
||
|
|
{
|
||
|
|
usb_read_fifo(ENDPOINT_0, (uint8_t *)&gu32_SamplingFreqMic, lu8_RxCount);
|
||
|
|
|
||
|
|
void usb_Audio_ChangeSamplingRate_callback(uint8_t Index);
|
||
|
|
usb_Audio_ChangeSamplingRate_callback(AUDIO_SET_SAMPLING_MIC);
|
||
|
|
}break;
|
||
|
|
|
||
|
|
default: break;
|
||
|
|
}
|
||
|
|
|
||
|
|
usb_Endpoint0_FlushFIFO();
|
||
|
|
|
||
|
|
Endpoint_0_DataOut_Handler = NULL;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*********************************************************************
|
||
|
|
* @fn usb_Audio_ClassRequest_Handler
|
||
|
|
*
|
||
|
|
* @brief Audio Class Request Handler
|
||
|
|
*
|
||
|
|
* @param None.
|
||
|
|
* @return None.
|
||
|
|
*/
|
||
|
|
static void usb_Audio_ClassRequest_Handler(usb_StandardRequest_t* pStandardRequest, usb_ReturnData_t* pReturnData)
|
||
|
|
{
|
||
|
|
if (pStandardRequest->bmRequestType & RECIPIENT_INTERFACE)
|
||
|
|
{
|
||
|
|
switch (pStandardRequest->bRequest)
|
||
|
|
{
|
||
|
|
case GET_CUR:
|
||
|
|
{
|
||
|
|
if (pStandardRequest->wValue[1] == MUTE_CONTROL)
|
||
|
|
{
|
||
|
|
if (pStandardRequest->wIndex[1] == 0x02)
|
||
|
|
{
|
||
|
|
gu8_Respond[0] = gu8_MuteSpeaker;
|
||
|
|
}
|
||
|
|
else if (pStandardRequest->wIndex[1] == 0x05)
|
||
|
|
{
|
||
|
|
gu8_Respond[0] = gu8_MuteMic;
|
||
|
|
}
|
||
|
|
|
||
|
|
pReturnData->DataBuffer = gu8_Respond;
|
||
|
|
pReturnData->DataLength = 1;
|
||
|
|
}
|
||
|
|
else if (pStandardRequest->wValue[1] == VOLUME_CONTROL)
|
||
|
|
{
|
||
|
|
if (pStandardRequest->wIndex[1] == 0x02)
|
||
|
|
{
|
||
|
|
gu8_Respond[0] = gu16_VolumeSpeaker & 0xFF;
|
||
|
|
gu8_Respond[1] = gu16_VolumeSpeaker >> 8 & 0xFF;
|
||
|
|
}
|
||
|
|
else if (pStandardRequest->wIndex[1] == 0x05)
|
||
|
|
{
|
||
|
|
gu8_Respond[0] = gu16_VolumeMic & 0xFF;
|
||
|
|
gu8_Respond[1] = gu16_VolumeMic >> 8 & 0xFF;
|
||
|
|
}
|
||
|
|
|
||
|
|
pReturnData->DataBuffer = gu8_Respond;
|
||
|
|
pReturnData->DataLength = 2;
|
||
|
|
}
|
||
|
|
}break;
|
||
|
|
|
||
|
|
case GET_MIN:
|
||
|
|
{
|
||
|
|
if (pStandardRequest->wValue[1] == VOLUME_CONTROL)
|
||
|
|
{
|
||
|
|
gu8_Respond[0] = 0x00;
|
||
|
|
gu8_Respond[1] = 0x00;
|
||
|
|
|
||
|
|
pReturnData->DataBuffer = gu8_Respond;
|
||
|
|
pReturnData->DataLength = 2;
|
||
|
|
}
|
||
|
|
}break;
|
||
|
|
|
||
|
|
case GET_MAX:
|
||
|
|
{
|
||
|
|
if (pStandardRequest->wValue[1] == VOLUME_CONTROL)
|
||
|
|
{
|
||
|
|
gu8_Respond[0] = USB_AUDIO_VOLUME_MAX;
|
||
|
|
gu8_Respond[1] = 0x00;
|
||
|
|
|
||
|
|
pReturnData->DataBuffer = gu8_Respond;
|
||
|
|
pReturnData->DataLength = 2;
|
||
|
|
}
|
||
|
|
}break;
|
||
|
|
|
||
|
|
case GET_RES:
|
||
|
|
{
|
||
|
|
if (pStandardRequest->wValue[1] == VOLUME_CONTROL)
|
||
|
|
{
|
||
|
|
gu8_Respond[0] = 0x01;
|
||
|
|
gu8_Respond[1] = 0x00;
|
||
|
|
|
||
|
|
pReturnData->DataBuffer = gu8_Respond;
|
||
|
|
pReturnData->DataLength = 2;
|
||
|
|
}
|
||
|
|
}break;
|
||
|
|
|
||
|
|
case SET_CUR:
|
||
|
|
{
|
||
|
|
if (pStandardRequest->wValue[1] == VOLUME_CONTROL)
|
||
|
|
{
|
||
|
|
/* Speaker */
|
||
|
|
if (pStandardRequest->wIndex[1] == 0x02)
|
||
|
|
{
|
||
|
|
ge_CTLIndex = AUDIO_SET_VOL_SPEAKER;
|
||
|
|
}
|
||
|
|
/* microphone */
|
||
|
|
else if (pStandardRequest->wIndex[1] == 0x05)
|
||
|
|
{
|
||
|
|
ge_CTLIndex = AUDIO_SET_VOL_MIC;
|
||
|
|
}
|
||
|
|
|
||
|
|
Endpoint_0_DataOut_Handler = usb_Audio_SetControl;
|
||
|
|
}
|
||
|
|
else if (pStandardRequest->wValue[1] == MUTE_CONTROL)
|
||
|
|
{
|
||
|
|
/* Speaker */
|
||
|
|
if (pStandardRequest->wIndex[1] == 0x02)
|
||
|
|
{
|
||
|
|
ge_CTLIndex = AUDIO_SET_MUTE_SPEAKER;
|
||
|
|
}
|
||
|
|
/* microphone */
|
||
|
|
else if (pStandardRequest->wIndex[1] == 0x05)
|
||
|
|
{
|
||
|
|
ge_CTLIndex = AUDIO_SET_MUTE_MIC;
|
||
|
|
}
|
||
|
|
|
||
|
|
Endpoint_0_DataOut_Handler = usb_Audio_SetControl;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
default: break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else if (pStandardRequest->bmRequestType & RECIPIENT_ENDPOINT)
|
||
|
|
{
|
||
|
|
switch (pStandardRequest->bRequest)
|
||
|
|
{
|
||
|
|
case SET_CUR:
|
||
|
|
{
|
||
|
|
if (pStandardRequest->wValue[1] == SAMPLING_FREQ_CONTROL)
|
||
|
|
{
|
||
|
|
/* IN Endpoint */
|
||
|
|
if (pStandardRequest->wIndex[0] == 0x81)
|
||
|
|
{
|
||
|
|
ge_CTLIndex = AUDIO_SET_SAMPLING_MIC;
|
||
|
|
}
|
||
|
|
/* OUT Endpoint */
|
||
|
|
else if (pStandardRequest->wIndex[0] == 0x02)
|
||
|
|
{
|
||
|
|
ge_CTLIndex = AUDIO_SET_SAMPLING_SPEAKER;
|
||
|
|
}
|
||
|
|
|
||
|
|
Endpoint_0_DataOut_Handler = usb_Audio_SetControl;
|
||
|
|
}
|
||
|
|
}break;
|
||
|
|
|
||
|
|
default: break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/*********************************************************************
|
||
|
|
* @fn usb_hid_StandardClassRequest_Handler
|
||
|
|
*
|
||
|
|
* @brief HID Standard Class Request Handler
|
||
|
|
*
|
||
|
|
* @param None.
|
||
|
|
* @return None.
|
||
|
|
*/
|
||
|
|
static void usb_hid_StandardClassRequest_Handler(usb_StandardRequest_t* pStandardRequest, usb_ReturnData_t* pReturnData)
|
||
|
|
{
|
||
|
|
switch (pStandardRequest->wValue[1])
|
||
|
|
{
|
||
|
|
case DESCRIPTOR_HID_REPORT:
|
||
|
|
{
|
||
|
|
if (pStandardRequest->wIndex[0] == 3){
|
||
|
|
pReturnData->DataLength = USB_HID_Audio_ReportDesc[0];
|
||
|
|
pReturnData->DataBuffer = &USB_HID_Audio_ReportDesc[1];
|
||
|
|
}
|
||
|
|
}break;
|
||
|
|
|
||
|
|
default: break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
extern volatile uint16_t MIC_Buffer[960];
|
||
|
|
extern volatile uint32_t MIC_Packet;
|
||
|
|
extern volatile uint32_t MIC_RxCount;
|
||
|
|
extern volatile uint32_t MIC_TxCount;
|
||
|
|
extern volatile bool MIC_Start;
|
||
|
|
|
||
|
|
extern volatile uint32_t Speaker_Buffer[192 * 2 * 10];
|
||
|
|
extern volatile uint32_t Speaker_Packet;
|
||
|
|
extern volatile uint32_t Speaker_RxCount;
|
||
|
|
extern volatile uint32_t Speaker_TxCount;
|
||
|
|
extern volatile bool Speaker_Start;
|
||
|
|
|
||
|
|
/*********************************************************************
|
||
|
|
* @fn usb_Audio_Endpoints_Handler
|
||
|
|
*
|
||
|
|
* @brief Audio Endpoints Handler
|
||
|
|
*
|
||
|
|
*/
|
||
|
|
void usb_Audio_Endpoints_Handler(uint8_t RxStatus, uint8_t TxStatus)
|
||
|
|
{
|
||
|
|
uint32_t lu32_RxCount;
|
||
|
|
|
||
|
|
/* ENDPOINT_2 Rx */
|
||
|
|
if (RxStatus & 0x04)
|
||
|
|
{
|
||
|
|
/* Receive audio playback data */
|
||
|
|
usb_selecet_endpoint(ENDPOINT_2);
|
||
|
|
|
||
|
|
if (usb_Endpoints_GET_RxPktRdy())
|
||
|
|
{
|
||
|
|
switch (gu32_BitWidthSpeaker)
|
||
|
|
{
|
||
|
|
case USB_AUDIO_DATA_WIDTH_16BIT:
|
||
|
|
{
|
||
|
|
lu32_RxCount = usb_Endpoints_get_RxCount_16bit();
|
||
|
|
usb_read_fifo(ENDPOINT_2, (uint8_t *)&Speaker_Buffer[gu32_PacketLengthSpeaker * Speaker_Packet], lu32_RxCount);
|
||
|
|
usb_Endpoints_FlushRxFIFO();
|
||
|
|
|
||
|
|
Speaker_Packet += 1;
|
||
|
|
if (Speaker_Packet >= 10)
|
||
|
|
{
|
||
|
|
Speaker_Packet = 0;
|
||
|
|
}
|
||
|
|
Speaker_RxCount = Speaker_Packet * gu32_PacketLengthSpeaker;
|
||
|
|
|
||
|
|
if (Speaker_Packet >= 5 && Speaker_Start == false)
|
||
|
|
{
|
||
|
|
Speaker_Start = true;
|
||
|
|
}
|
||
|
|
}break;
|
||
|
|
|
||
|
|
case USB_AUDIO_DATA_WIDTH_24BIT:
|
||
|
|
{
|
||
|
|
lu32_RxCount = usb_Endpoints_get_RxCount_16bit();
|
||
|
|
|
||
|
|
uint32_t BufferIndex = (gu32_PacketLengthSpeaker * 2) * Speaker_Packet;
|
||
|
|
for(int i = 0; i < lu32_RxCount/3; i++)
|
||
|
|
usb_read_fifo(ENDPOINT_2, (uint8_t *)&Speaker_Buffer[BufferIndex + i], 3);
|
||
|
|
usb_Endpoints_FlushRxFIFO();
|
||
|
|
|
||
|
|
Speaker_Packet += 1;
|
||
|
|
if (Speaker_Packet >= 10)
|
||
|
|
{
|
||
|
|
Speaker_Packet = 0;
|
||
|
|
}
|
||
|
|
Speaker_RxCount = Speaker_Packet * (gu32_PacketLengthSpeaker * 2);
|
||
|
|
|
||
|
|
if (Speaker_Packet >= 5 && Speaker_Start == false)
|
||
|
|
{
|
||
|
|
Speaker_Start = true;
|
||
|
|
}
|
||
|
|
}break;
|
||
|
|
|
||
|
|
default:break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/* ENDPOINT_1 Tx */
|
||
|
|
if (TxStatus & 0x02)
|
||
|
|
{
|
||
|
|
/* Send microphone data to Host */
|
||
|
|
if (MIC_Start)
|
||
|
|
{
|
||
|
|
usb_selecet_endpoint(ENDPOINT_1);
|
||
|
|
|
||
|
|
if (usb_Endpoints_GET_TxPktRdy() == false)
|
||
|
|
{
|
||
|
|
usb_write_fifo(ENDPOINT_1, (uint8_t *)&MIC_Buffer[MIC_TxCount], gu32_PacketLengthMic*2);
|
||
|
|
usb_Endpoints_SET_TxPktRdy();
|
||
|
|
|
||
|
|
MIC_TxCount += gu32_PacketLengthMic;
|
||
|
|
|
||
|
|
if (MIC_TxCount >= gu32_PacketLengthMic*10)
|
||
|
|
{
|
||
|
|
MIC_TxCount = 0;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
void usb_Audio_InterfaceAlternateSet_callback(uint8_t Interface)
|
||
|
|
{
|
||
|
|
switch (Interface)
|
||
|
|
{
|
||
|
|
/* Speaker Interface */
|
||
|
|
case 1:
|
||
|
|
{
|
||
|
|
/* Change the data bit width */
|
||
|
|
if (usbdev_get_interface_alternate_num(1) == 1)
|
||
|
|
gu32_BitWidthSpeaker = USB_AUDIO_DATA_WIDTH_16BIT;
|
||
|
|
else if (usbdev_get_interface_alternate_num(1) == 2)
|
||
|
|
gu32_BitWidthSpeaker = USB_AUDIO_DATA_WIDTH_24BIT;
|
||
|
|
}break;
|
||
|
|
|
||
|
|
default:break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
void usb_Audio_ChangeSamplingRate_callback(uint8_t Index)
|
||
|
|
{
|
||
|
|
switch (Index)
|
||
|
|
{
|
||
|
|
/* Change the Speaker sampling rate */
|
||
|
|
case AUDIO_SET_SAMPLING_SPEAKER:
|
||
|
|
{
|
||
|
|
gu32_PacketLengthSpeaker = gu32_SamplingFreqSpeaker/1000;
|
||
|
|
}break;
|
||
|
|
|
||
|
|
/* Change the Mic sampling rate */
|
||
|
|
case AUDIO_SET_SAMPLING_MIC:
|
||
|
|
{
|
||
|
|
gu32_PacketLengthMic = gu32_SamplingFreqMic/1000;
|
||
|
|
}break;
|
||
|
|
|
||
|
|
default:break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
uint32_t usb_Audio_get_Speaker_Packet_Length(void)
|
||
|
|
{
|
||
|
|
return gu32_PacketLengthSpeaker;
|
||
|
|
}
|
||
|
|
uint32_t usb_Audio_get_Mic_Packet_Length(void)
|
||
|
|
{
|
||
|
|
return gu32_PacketLengthMic;
|
||
|
|
}
|
||
|
|
uint32_t usb_Audio_get_Speaker_Bit_Width(void)
|
||
|
|
{
|
||
|
|
return gu32_BitWidthSpeaker;
|
||
|
|
}
|
||
|
|
uint32_t usb_Audio_get_Mic_Bit_Width(void)
|
||
|
|
{
|
||
|
|
return gu32_BitWidthMic;
|
||
|
|
}
|
||
|
|
uint32_t usb_Audio_get_Speaker_Mute_status(void)
|
||
|
|
{
|
||
|
|
return gu8_MuteSpeaker;
|
||
|
|
}
|
||
|
|
uint32_t usb_Audio_get_Mic_Mute_status(void)
|
||
|
|
{
|
||
|
|
return gu8_MuteMic;
|
||
|
|
}
|
||
|
|
uint32_t usb_Audio_get_Speaker_Volume(void)
|
||
|
|
{
|
||
|
|
return gu16_VolumeSpeaker;
|
||
|
|
}
|
||
|
|
uint32_t usb_Audio_get_Mic_Volume(void)
|
||
|
|
{
|
||
|
|
return gu16_VolumeMic;
|
||
|
|
}
|
||
|
|
uint32_t usb_Audio_get_Speaker_SamplingFreq(void)
|
||
|
|
{
|
||
|
|
return gu32_SamplingFreqSpeaker;
|
||
|
|
}
|
||
|
|
uint32_t usb_Audio_get_Mic_SamplingFreq(void)
|
||
|
|
{
|
||
|
|
return gu32_SamplingFreqMic;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*********************************************************************
|
||
|
|
* @fn usb_audio_init
|
||
|
|
*
|
||
|
|
* @brief audio device parameter initialization
|
||
|
|
*
|
||
|
|
* @param None.
|
||
|
|
* @return None.
|
||
|
|
*/
|
||
|
|
void usb_audio_init(void)
|
||
|
|
{
|
||
|
|
/* Initialize the relevant pointer */
|
||
|
|
usbdev_get_dev_desc((uint8_t *)USB_Audio_DeviceDesc);
|
||
|
|
|
||
|
|
usbdev_get_config_desc((uint8_t *)USB_Audio_ConfigurationDesc);
|
||
|
|
usbdev_get_string_Manufacture((uint8_t *)USB_Audio_ManufactureDesc);
|
||
|
|
usbdev_get_string_Product((uint8_t *)USB_Audio_ProductDesc);
|
||
|
|
usbdev_get_string_SerialNumber((uint8_t *)USB_Audio_SerialNumberDesc);
|
||
|
|
usbdev_get_string_LanuageID((uint8_t *)USB_Audio_LanuageIDDesc);
|
||
|
|
|
||
|
|
Endpoint_0_StandardClassRequest_Handler = usb_hid_StandardClassRequest_Handler;
|
||
|
|
Endpoint_0_ClassRequest_Handler = usb_Audio_ClassRequest_Handler;
|
||
|
|
|
||
|
|
Endpoints_Handler = usb_Audio_Endpoints_Handler;
|
||
|
|
|
||
|
|
USB_InterfaceAlternateSet_callback = usb_Audio_InterfaceAlternateSet_callback;
|
||
|
|
|
||
|
|
USB_Reset_Handler = usb_audio_init;
|
||
|
|
|
||
|
|
/* config data endpoint fifo */
|
||
|
|
usb_selecet_endpoint(ENDPOINT_1);
|
||
|
|
usb_TxSyncEndpoint_enable();
|
||
|
|
usb_endpoint_Txfifo_config(64/8, 5); /* 256 Byte, 64 ~ 319 */
|
||
|
|
usb_TxMaxP_set(256/8);
|
||
|
|
|
||
|
|
usb_selecet_endpoint(ENDPOINT_2);
|
||
|
|
usb_RxSyncEndpoint_enable();
|
||
|
|
usb_endpoint_Rxfifo_config(320/8, 6); /* 512 Byte, 320 ~ 831 */
|
||
|
|
usb_RxMaxP_set(512/8);
|
||
|
|
usb_endpoint_Txfifo_config(832/8, 1); /* 16 Byte, 832 ~ 464 */
|
||
|
|
usb_TxMaxP_set(16/8);
|
||
|
|
|
||
|
|
usb_TxInt_Enable(ENDPOINT_1);
|
||
|
|
usb_RxInt_Enable(ENDPOINT_2);
|
||
|
|
}
|