Merge pull request #2105 from kholia/cdc_uac2_example

Add CDC+UAC2 composite device example for Pico
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Ha Thach 2023-08-03 15:13:56 +07:00 committed by GitHub
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@ -13,6 +13,7 @@ family_add_subdirectory(board_test)
family_add_subdirectory(cdc_dual_ports)
family_add_subdirectory(cdc_msc)
family_add_subdirectory(cdc_msc_freertos)
family_add_subdirectory(cdc_uac2)
family_add_subdirectory(dfu)
family_add_subdirectory(dfu_runtime)
family_add_subdirectory(dynamic_configuration)

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@ -0,0 +1,38 @@
cmake_minimum_required(VERSION 3.17)
include(${CMAKE_CURRENT_SOURCE_DIR}/../../../hw/bsp/family_support.cmake)
# gets PROJECT name for the example (e.g. <BOARD>-<DIR_NAME>)
family_get_project_name(PROJECT ${CMAKE_CURRENT_LIST_DIR})
project(${PROJECT} C CXX ASM)
# Checks this example is valid for the family and initializes the project
family_initialize_project(${PROJECT} ${CMAKE_CURRENT_LIST_DIR})
# Espressif has its own cmake build system
if(FAMILY STREQUAL "espressif")
return()
endif()
add_executable(${PROJECT})
# Example source
target_sources(${PROJECT} PUBLIC
${CMAKE_CURRENT_SOURCE_DIR}/src/cdc_app.c
${CMAKE_CURRENT_SOURCE_DIR}/src/main.c
${CMAKE_CURRENT_SOURCE_DIR}/src/uac2_app.c
${CMAKE_CURRENT_SOURCE_DIR}/src/usb_descriptors.c
)
# Example include
target_include_directories(${PROJECT} PUBLIC
${CMAKE_CURRENT_SOURCE_DIR}/src
)
# Configure compilation flags and libraries for the example... see the corresponding function
# in hw/bsp/FAMILY/family.cmake for details.
family_configure_device_example(${PROJECT} noos)
# Uncomment me to enable UART based debugging
# pico_enable_stdio_uart(${PROJECT} 1)

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@ -0,0 +1,16 @@
include ../../make.mk
INC += \
src \
$(TOP)/hw \
# Example source
EXAMPLE_SOURCE += \
src/cdc_app.c \
src/main.c \
src/uac2_app.c \
src/usb_descriptors.c \
SRC_C += $(addprefix $(CURRENT_PATH)/, $(EXAMPLE_SOURCE))
include ../../rules.mk

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@ -0,0 +1,52 @@
#### Composite CDC + UAC2 on Pico
This example provides a composite CDC + UAC2 device on top of a Raspberry Pi
Pico board.
#### Use Cases
- The CDC + UAC2 composite device happens to be important, especially in the
amateur radio community.
Modern radios (`rigs`) like Icom IC-7300 + IC-705 expose a sound card and a
serial device (`composite device`) to the computer over a single USB cable.
This allows for Audio I/O and CAT control over a single USB cable which is
very convenient.
By including and maintaining this example in TinyUSB repository, we enable
the amateur radio community to build (`homebrew`) radios with similar
functionality as the (expensive) commercial rigs.
This PR is important in bridging this specific gap between the commercial
rigs and homebrew equipment.
- https://digirig.net/digirig-mobile-rev-1-9/ is a digital interface for
interfacing radios (that lack an inbuilt digital interface) with computers.
Digirig Mobile works brilliantly (is OSS!) and is a big improvement over
traditional digital interfaces (like the SignaLink USB Interface). By using a
Raspberry Pi Pico powered CDC + UAC2 composite device, we can simplify the
Digirig Mobile schematic, drastically reduce the manufacturing cost, and
(again) enable the homebrewers community to homebrew a modern digital interface
with ease themselves.
#### Build Steps
```
cd examples/device/cdc_uac2
export PICO_SDK_PATH=$HOME/pico-sdk
cmake -DFAMILY=rp2040 pico .
cmake -DFAMILY=rp2040 -DCMAKE_BUILD_TYPE=Debug # use this for debugging
make BOARD=raspberry_pi_pico all
```
#### Development Notes
Please try to keep this code synchronized with the `uac2_headset` example
included in this repository.

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@ -0,0 +1,72 @@
/*
* The MIT License (MIT)
*
* Copyright (c) 2019 Ha Thach (tinyusb.org)
* Copyright (c) 2022 Angel Molina (angelmolinu@gmail.com)
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*
*/
#include "bsp/board.h"
#include "tusb.h"
#include "common.h"
// Invoked when cdc when line state changed e.g connected/disconnected
void tud_cdc_line_state_cb(uint8_t itf, bool dtr, bool rts)
{
(void) itf;
(void) rts;
if (dtr)
{
// Terminal connected
}
else
{
// Terminal disconnected
}
}
// Invoked when CDC interface received data from host
void tud_cdc_rx_cb(uint8_t itf)
{
uint8_t buf[64];
uint32_t count;
// connected() check for DTR bit
// Most but not all terminal client set this when making connection
if (tud_cdc_connected())
{
if (tud_cdc_available()) // data is available
{
count = tud_cdc_n_read(itf, buf, sizeof(buf));
(void) count;
tud_cdc_n_write(itf, buf, count);
tud_cdc_n_write_flush(itf);
// dummy code to check that cdc serial is responding
board_led_write(0);
board_delay(50);
board_led_write(1);
board_delay(50);
board_led_write(0);
}
}
}

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@ -0,0 +1,34 @@
#ifndef __COMMON_H__
#define __COMMON_H__
/* Blink pattern
* - 25 ms : streaming data
* - 250 ms : device not mounted
* - 1000 ms : device mounted
* - 2500 ms : device is suspended
*/
enum
{
BLINK_STREAMING = 25,
BLINK_NOT_MOUNTED = 250,
BLINK_MOUNTED = 1000,
BLINK_SUSPENDED = 2500,
};
enum
{
VOLUME_CTRL_0_DB = 0,
VOLUME_CTRL_10_DB = 2560,
VOLUME_CTRL_20_DB = 5120,
VOLUME_CTRL_30_DB = 7680,
VOLUME_CTRL_40_DB = 10240,
VOLUME_CTRL_50_DB = 12800,
VOLUME_CTRL_60_DB = 15360,
VOLUME_CTRL_70_DB = 17920,
VOLUME_CTRL_80_DB = 20480,
VOLUME_CTRL_90_DB = 23040,
VOLUME_CTRL_100_DB = 25600,
VOLUME_CTRL_SILENCE = 0x8000,
};
#endif

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@ -0,0 +1,99 @@
/*
* The MIT License (MIT)
*
* Copyright (c) 2020 Jerzy Kasenberg
* Copyright (c) 2022 Angel Molina <angelmolinu@gmail.com>
* Copyright (c) 2023 Dhiru Kholia <dhiru.kholia@gmail.com>
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*
*/
#include <stdio.h>
#include <string.h>
#include "bsp/board.h"
#include "tusb.h"
#include "common.h"
extern uint32_t blink_interval_ms;
#if (CFG_TUSB_MCU == OPT_MCU_RP2040)
#include "pico/stdlib.h"
#endif
void led_blinking_task(void);
/*------------- MAIN -------------*/
int main(void)
{
board_init();
// init device stack on configured roothub port
tud_init(BOARD_TUD_RHPORT);
#if (CFG_TUSB_MCU == OPT_MCU_RP2040)
stdio_init_all();
#endif
TU_LOG1("CDC UAC2 example running\r\n");
while (1)
{
tud_task(); // TinyUSB device task
led_blinking_task();
#if (CFG_TUSB_MCU == OPT_MCU_RP2040)
// printf("Hello, world!\n");
#endif
}
return 0;
}
//--------------------------------------------------------------------+
// Device callbacks
//--------------------------------------------------------------------+
// Invoked when device is mounted
void tud_mount_cb(void)
{
blink_interval_ms = BLINK_MOUNTED;
}
// Invoked when device is unmounted
void tud_umount_cb(void)
{
blink_interval_ms = BLINK_NOT_MOUNTED;
}
// Invoked when usb bus is suspended
// remote_wakeup_en : if host allow us to perform remote wakeup
// Within 7ms, device must draw an average of current less than 2.5 mA from bus
void tud_suspend_cb(bool remote_wakeup_en)
{
(void)remote_wakeup_en;
blink_interval_ms = BLINK_SUSPENDED;
}
// Invoked when usb bus is resumed
void tud_resume_cb(void)
{
blink_interval_ms = BLINK_MOUNTED;
}

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@ -0,0 +1,174 @@
/*
* The MIT License (MIT)
*
* Copyright (c) 2020 Ha Thach (tinyusb.org)
* Copyright (c) 2020 Jerzy Kasenberg
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*
*/
#ifndef _TUSB_CONFIG_H_
#define _TUSB_CONFIG_H_
#ifdef __cplusplus
extern "C" {
#endif
#include "usb_descriptors.h"
//--------------------------------------------------------------------+
// Board Specific Configuration
//--------------------------------------------------------------------+
// RHPort number used for device can be defined by board.mk, default to port 0
#ifndef BOARD_TUD_RHPORT
#define BOARD_TUD_RHPORT 0
#endif
// RHPort max operational speed can defined by board.mk
#ifndef BOARD_TUD_MAX_SPEED
#define BOARD_TUD_MAX_SPEED OPT_MODE_DEFAULT_SPEED
#endif
//--------------------------------------------------------------------
// Common Configuration
//--------------------------------------------------------------------
// defined by compiler flags for flexibility
#ifndef CFG_TUSB_MCU
#error CFG_TUSB_MCU must be defined
#endif
#ifndef CFG_TUSB_OS
#define CFG_TUSB_OS OPT_OS_NONE
#endif
#ifndef CFG_TUSB_DEBUG
#define CFG_TUSB_DEBUG 0
#endif
// Enable Device stack
#define CFG_TUD_ENABLED 1
// Default is max speed that hardware controller could support with on-chip PHY
#define CFG_TUD_MAX_SPEED BOARD_TUD_MAX_SPEED
/* USB DMA on some MCUs can only access a specific SRAM region with restriction on alignment.
* Tinyusb use follows macros to declare transferring memory so that they can be put
* into those specific section.
* e.g
* - CFG_TUSB_MEM SECTION : __attribute__ (( section(".usb_ram") ))
* - CFG_TUSB_MEM_ALIGN : __attribute__ ((aligned(4)))
*/
#ifndef CFG_TUSB_MEM_SECTION
#define CFG_TUSB_MEM_SECTION
#endif
#ifndef CFG_TUSB_MEM_ALIGN
#define CFG_TUSB_MEM_ALIGN __attribute__ ((aligned(4)))
#endif
//--------------------------------------------------------------------
// DEVICE CONFIGURATION
//--------------------------------------------------------------------
#ifndef CFG_TUD_ENDPOINT0_SIZE
#define CFG_TUD_ENDPOINT0_SIZE 64
#endif
//------------- CLASS -------------//
#define CFG_TUD_CDC 1
#define CFG_TUD_MSC 0
#define CFG_TUD_HID 0
#define CFG_TUD_MIDI 0
#define CFG_TUD_AUDIO 1
#define CFG_TUD_VENDOR 0
//--------------------------------------------------------------------
// AUDIO CLASS DRIVER CONFIGURATION
//--------------------------------------------------------------------
#define CFG_TUD_AUDIO_FUNC_1_DESC_LEN TUD_AUDIO_HEADSET_STEREO_DESC_LEN
// How many formats are used, need to adjust USB descriptor if changed
#define CFG_TUD_AUDIO_FUNC_1_N_FORMATS 2
// Audio format type I specifications
#if defined(__RX__)
#define CFG_TUD_AUDIO_FUNC_1_MAX_SAMPLE_RATE 48000 // 16bit/48kHz is the best quality for Renesas RX
#else
#define CFG_TUD_AUDIO_FUNC_1_MAX_SAMPLE_RATE 96000 // 24bit/96kHz is the best quality for full-speed, high-speed is needed beyond this
#endif
#define CFG_TUD_AUDIO_FUNC_1_N_CHANNELS_TX 1
#define CFG_TUD_AUDIO_FUNC_1_N_CHANNELS_RX 1 // Changed
// 16bit in 16bit slots
#define CFG_TUD_AUDIO_FUNC_1_FORMAT_1_N_BYTES_PER_SAMPLE_TX 2
#define CFG_TUD_AUDIO_FUNC_1_FORMAT_1_RESOLUTION_TX 16
#define CFG_TUD_AUDIO_FUNC_1_FORMAT_1_N_BYTES_PER_SAMPLE_RX 2
#define CFG_TUD_AUDIO_FUNC_1_FORMAT_1_RESOLUTION_RX 16
#if defined(__RX__)
// 8bit in 8bit slots
#define CFG_TUD_AUDIO_FUNC_1_FORMAT_2_N_BYTES_PER_SAMPLE_TX 1
#define CFG_TUD_AUDIO_FUNC_1_FORMAT_2_RESOLUTION_TX 8
#define CFG_TUD_AUDIO_FUNC_1_FORMAT_2_N_BYTES_PER_SAMPLE_RX 1
#define CFG_TUD_AUDIO_FUNC_1_FORMAT_2_RESOLUTION_RX 8
#else
// 24bit in 32bit slots
#define CFG_TUD_AUDIO_FUNC_1_FORMAT_2_N_BYTES_PER_SAMPLE_TX 4
#define CFG_TUD_AUDIO_FUNC_1_FORMAT_2_RESOLUTION_TX 24
#define CFG_TUD_AUDIO_FUNC_1_FORMAT_2_N_BYTES_PER_SAMPLE_RX 4
#define CFG_TUD_AUDIO_FUNC_1_FORMAT_2_RESOLUTION_RX 24
#endif
// EP and buffer size - for isochronous EP´s, the buffer and EP size are equal (different sizes would not make sense)
#define CFG_TUD_AUDIO_ENABLE_EP_IN 1
#define CFG_TUD_AUDIO_FUNC_1_FORMAT_1_EP_SZ_IN TUD_AUDIO_EP_SIZE(CFG_TUD_AUDIO_FUNC_1_MAX_SAMPLE_RATE, CFG_TUD_AUDIO_FUNC_1_FORMAT_1_N_BYTES_PER_SAMPLE_TX, CFG_TUD_AUDIO_FUNC_1_N_CHANNELS_TX)
#define CFG_TUD_AUDIO_FUNC_1_FORMAT_2_EP_SZ_IN TUD_AUDIO_EP_SIZE(CFG_TUD_AUDIO_FUNC_1_MAX_SAMPLE_RATE, CFG_TUD_AUDIO_FUNC_1_FORMAT_2_N_BYTES_PER_SAMPLE_TX, CFG_TUD_AUDIO_FUNC_1_N_CHANNELS_TX)
#define CFG_TUD_AUDIO_FUNC_1_EP_IN_SW_BUF_SZ TU_MAX(CFG_TUD_AUDIO_FUNC_1_FORMAT_1_EP_SZ_IN, CFG_TUD_AUDIO_FUNC_1_FORMAT_1_EP_SZ_IN)
#define CFG_TUD_AUDIO_FUNC_1_EP_IN_SZ_MAX TU_MAX(CFG_TUD_AUDIO_FUNC_1_FORMAT_1_EP_SZ_IN, CFG_TUD_AUDIO_FUNC_1_FORMAT_1_EP_SZ_IN) // Maximum EP IN size for all AS alternate settings used
// EP and buffer size - for isochronous EP´s, the buffer and EP size are equal (different sizes would not make sense)
#define CFG_TUD_AUDIO_ENABLE_EP_OUT 1
#define CFG_TUD_AUDIO_UNC_1_FORMAT_1_EP_SZ_OUT TUD_AUDIO_EP_SIZE(CFG_TUD_AUDIO_FUNC_1_MAX_SAMPLE_RATE, CFG_TUD_AUDIO_FUNC_1_FORMAT_1_N_BYTES_PER_SAMPLE_RX, CFG_TUD_AUDIO_FUNC_1_N_CHANNELS_RX)
#define CFG_TUD_AUDIO_UNC_1_FORMAT_2_EP_SZ_OUT TUD_AUDIO_EP_SIZE(CFG_TUD_AUDIO_FUNC_1_MAX_SAMPLE_RATE, CFG_TUD_AUDIO_FUNC_1_FORMAT_2_N_BYTES_PER_SAMPLE_RX, CFG_TUD_AUDIO_FUNC_1_N_CHANNELS_RX)
#define CFG_TUD_AUDIO_FUNC_1_EP_OUT_SW_BUF_SZ TU_MAX(CFG_TUD_AUDIO_UNC_1_FORMAT_1_EP_SZ_OUT, CFG_TUD_AUDIO_UNC_1_FORMAT_1_EP_SZ_OUT)
#define CFG_TUD_AUDIO_FUNC_1_EP_OUT_SZ_MAX TU_MAX(CFG_TUD_AUDIO_UNC_1_FORMAT_1_EP_SZ_OUT, CFG_TUD_AUDIO_UNC_1_FORMAT_1_EP_SZ_OUT) // Maximum EP IN size for all AS alternate settings used
// Number of Standard AS Interface Descriptors (4.9.1) defined per audio function - this is required to be able to remember the current alternate settings of these interfaces - We restrict us here to have a constant number for all audio functions (which means this has to be the maximum number of AS interfaces an audio function has and a second audio function with less AS interfaces just wastes a few bytes)
#define CFG_TUD_AUDIO_FUNC_1_N_AS_INT 2
// Size of control request buffer
#define CFG_TUD_AUDIO_FUNC_1_CTRL_BUF_SZ 64
// CDC FIFO size of TX and RX
#define CFG_TUD_CDC_RX_BUFSIZE 64
#define CFG_TUD_CDC_TX_BUFSIZE 64
#ifdef __cplusplus
}
#endif
#endif /* _TUSB_CONFIG_H_ */

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@ -0,0 +1,316 @@
/*
* The MIT License (MIT)
*
* Copyright (c) 2020 Jerzy Kasenberg
* Copyright (c) 2022 Angel Molina (angelmolinu@gmail.com)
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*
*/
#include <stdio.h>
#include <string.h>
#include "bsp/board.h"
#include "tusb.h"
#include "usb_descriptors.h"
#include "common.h"
//--------------------------------------------------------------------+
// MACRO CONSTANT TYPEDEF PROTOTYPES
//--------------------------------------------------------------------+
// List of supported sample rates
const uint32_t sample_rates[] = {44100, 48000};
uint32_t current_sample_rate = 44100;
#define N_SAMPLE_RATES TU_ARRAY_SIZE(sample_rates)
uint32_t blink_interval_ms = BLINK_NOT_MOUNTED;
// Audio controls
// Current states
int8_t mute[CFG_TUD_AUDIO_FUNC_1_N_CHANNELS_RX + 1]; // +1 for master channel 0
int16_t volume[CFG_TUD_AUDIO_FUNC_1_N_CHANNELS_RX + 1]; // +1 for master channel 0
// Buffer for microphone data
int32_t mic_buf[CFG_TUD_AUDIO_FUNC_1_EP_IN_SW_BUF_SZ / 4];
// Buffer for speaker data
int32_t spk_buf[CFG_TUD_AUDIO_FUNC_1_EP_OUT_SW_BUF_SZ / 4];
// Speaker data size received in the last frame
int spk_data_size;
// Resolution per format
const uint8_t resolutions_per_format[CFG_TUD_AUDIO_FUNC_1_N_FORMATS] = {CFG_TUD_AUDIO_FUNC_1_FORMAT_1_RESOLUTION_RX};
// Current resolution, update on format change
uint8_t current_resolution;
// Helper for clock get requests
static bool tud_audio_clock_get_request(uint8_t rhport, audio_control_request_t const *request)
{
TU_ASSERT(request->bEntityID == UAC2_ENTITY_CLOCK);
if (request->bControlSelector == AUDIO_CS_CTRL_SAM_FREQ)
{
if (request->bRequest == AUDIO_CS_REQ_CUR)
{
TU_LOG1("Clock get current freq %lu\r\n", current_sample_rate);
audio_control_cur_4_t curf = { (int32_t) tu_htole32(current_sample_rate) };
return tud_audio_buffer_and_schedule_control_xfer(rhport, (tusb_control_request_t const *)request, &curf, sizeof(curf));
}
else if (request->bRequest == AUDIO_CS_REQ_RANGE)
{
audio_control_range_4_n_t(N_SAMPLE_RATES) rangef =
{
.wNumSubRanges = tu_htole16(N_SAMPLE_RATES)
};
TU_LOG1("Clock get %d freq ranges\r\n", N_SAMPLE_RATES);
for(uint8_t i = 0; i < N_SAMPLE_RATES; i++)
{
rangef.subrange[i].bMin = (int32_t) sample_rates[i];
rangef.subrange[i].bMax = (int32_t) sample_rates[i];
rangef.subrange[i].bRes = 0;
TU_LOG1("Range %d (%d, %d, %d)\r\n", i, (int)rangef.subrange[i].bMin, (int)rangef.subrange[i].bMax, (int)rangef.subrange[i].bRes);
}
return tud_audio_buffer_and_schedule_control_xfer(rhport, (tusb_control_request_t const *)request, &rangef, sizeof(rangef));
}
}
else if (request->bControlSelector == AUDIO_CS_CTRL_CLK_VALID &&
request->bRequest == AUDIO_CS_REQ_CUR)
{
audio_control_cur_1_t cur_valid = { .bCur = 1 };
TU_LOG1("Clock get is valid %u\r\n", cur_valid.bCur);
return tud_audio_buffer_and_schedule_control_xfer(rhport, (tusb_control_request_t const *)request, &cur_valid, sizeof(cur_valid));
}
TU_LOG1("Clock get request not supported, entity = %u, selector = %u, request = %u\r\n",
request->bEntityID, request->bControlSelector, request->bRequest);
return false;
}
// Helper for clock set requests
static bool tud_audio_clock_set_request(uint8_t rhport, audio_control_request_t const *request, uint8_t const *buf)
{
(void)rhport;
TU_ASSERT(request->bEntityID == UAC2_ENTITY_CLOCK);
TU_VERIFY(request->bRequest == AUDIO_CS_REQ_CUR);
if (request->bControlSelector == AUDIO_CS_CTRL_SAM_FREQ)
{
TU_VERIFY(request->wLength == sizeof(audio_control_cur_4_t));
current_sample_rate = (uint32_t) ((audio_control_cur_4_t const *)buf)->bCur;
TU_LOG1("Clock set current freq: %ld\r\n", current_sample_rate);
return true;
}
else
{
TU_LOG1("Clock set request not supported, entity = %u, selector = %u, request = %u\r\n",
request->bEntityID, request->bControlSelector, request->bRequest);
return false;
}
}
// Helper for feature unit get requests
static bool tud_audio_feature_unit_get_request(uint8_t rhport, audio_control_request_t const *request)
{
TU_ASSERT(request->bEntityID == UAC2_ENTITY_SPK_FEATURE_UNIT);
if (request->bControlSelector == AUDIO_FU_CTRL_MUTE && request->bRequest == AUDIO_CS_REQ_CUR)
{
audio_control_cur_1_t mute1 = { .bCur = mute[request->bChannelNumber] };
TU_LOG1("Get channel %u mute %d\r\n", request->bChannelNumber, mute1.bCur);
return tud_audio_buffer_and_schedule_control_xfer(rhport, (tusb_control_request_t const *)request, &mute1, sizeof(mute1));
}
else if (UAC2_ENTITY_SPK_FEATURE_UNIT && request->bControlSelector == AUDIO_FU_CTRL_VOLUME)
{
if (request->bRequest == AUDIO_CS_REQ_RANGE)
{
audio_control_range_2_n_t(1) range_vol = {
.wNumSubRanges = tu_htole16(1),
.subrange[0] = { .bMin = tu_htole16(-VOLUME_CTRL_50_DB), tu_htole16(VOLUME_CTRL_0_DB), tu_htole16(256) }
};
TU_LOG1("Get channel %u volume range (%d, %d, %u) dB\r\n", request->bChannelNumber,
range_vol.subrange[0].bMin / 256, range_vol.subrange[0].bMax / 256, range_vol.subrange[0].bRes / 256);
return tud_audio_buffer_and_schedule_control_xfer(rhport, (tusb_control_request_t const *)request, &range_vol, sizeof(range_vol));
}
else if (request->bRequest == AUDIO_CS_REQ_CUR)
{
audio_control_cur_2_t cur_vol = { .bCur = tu_htole16(volume[request->bChannelNumber]) };
TU_LOG1("Get channel %u volume %d dB\r\n", request->bChannelNumber, cur_vol.bCur / 256);
return tud_audio_buffer_and_schedule_control_xfer(rhport, (tusb_control_request_t const *)request, &cur_vol, sizeof(cur_vol));
}
}
TU_LOG1("Feature unit get request not supported, entity = %u, selector = %u, request = %u\r\n",
request->bEntityID, request->bControlSelector, request->bRequest);
return false;
}
// Helper for feature unit set requests
static bool tud_audio_feature_unit_set_request(uint8_t rhport, audio_control_request_t const *request, uint8_t const *buf)
{
(void)rhport;
TU_ASSERT(request->bEntityID == UAC2_ENTITY_SPK_FEATURE_UNIT);
TU_VERIFY(request->bRequest == AUDIO_CS_REQ_CUR);
if (request->bControlSelector == AUDIO_FU_CTRL_MUTE)
{
TU_VERIFY(request->wLength == sizeof(audio_control_cur_1_t));
mute[request->bChannelNumber] = ((audio_control_cur_1_t const *)buf)->bCur;
TU_LOG1("Set channel %d Mute: %d\r\n", request->bChannelNumber, mute[request->bChannelNumber]);
return true;
}
else if (request->bControlSelector == AUDIO_FU_CTRL_VOLUME)
{
TU_VERIFY(request->wLength == sizeof(audio_control_cur_2_t));
volume[request->bChannelNumber] = ((audio_control_cur_2_t const *)buf)->bCur;
TU_LOG1("Set channel %d volume: %d dB\r\n", request->bChannelNumber, volume[request->bChannelNumber] / 256);
return true;
}
else
{
TU_LOG1("Feature unit set request not supported, entity = %u, selector = %u, request = %u\r\n",
request->bEntityID, request->bControlSelector, request->bRequest);
return false;
}
}
//--------------------------------------------------------------------+
// Application Callback API Implementations
//--------------------------------------------------------------------+
// Invoked when audio class specific get request received for an entity
bool tud_audio_get_req_entity_cb(uint8_t rhport, tusb_control_request_t const *p_request)
{
audio_control_request_t const *request = (audio_control_request_t const *)p_request;
if (request->bEntityID == UAC2_ENTITY_CLOCK)
return tud_audio_clock_get_request(rhport, request);
if (request->bEntityID == UAC2_ENTITY_SPK_FEATURE_UNIT)
return tud_audio_feature_unit_get_request(rhport, request);
else
{
TU_LOG1("Get request not handled, entity = %d, selector = %d, request = %d\r\n",
request->bEntityID, request->bControlSelector, request->bRequest);
}
return false;
}
// Invoked when audio class specific set request received for an entity
bool tud_audio_set_req_entity_cb(uint8_t rhport, tusb_control_request_t const *p_request, uint8_t *buf)
{
audio_control_request_t const *request = (audio_control_request_t const *)p_request;
if (request->bEntityID == UAC2_ENTITY_SPK_FEATURE_UNIT)
return tud_audio_feature_unit_set_request(rhport, request, buf);
if (request->bEntityID == UAC2_ENTITY_CLOCK)
return tud_audio_clock_set_request(rhport, request, buf);
TU_LOG1("Set request not handled, entity = %d, selector = %d, request = %d\r\n",
request->bEntityID, request->bControlSelector, request->bRequest);
return false;
}
bool tud_audio_set_itf_close_EP_cb(uint8_t rhport, tusb_control_request_t const * p_request)
{
(void)rhport;
uint8_t const itf = tu_u16_low(tu_le16toh(p_request->wIndex));
uint8_t const alt = tu_u16_low(tu_le16toh(p_request->wValue));
if (ITF_NUM_AUDIO_STREAMING_SPK == itf && alt == 0) {
// Audio streaming stop
blink_interval_ms = BLINK_MOUNTED;
}
return true;
}
bool tud_audio_set_itf_cb(uint8_t rhport, tusb_control_request_t const * p_request)
{
(void)rhport;
uint8_t const itf = tu_u16_low(tu_le16toh(p_request->wIndex));
uint8_t const alt = tu_u16_low(tu_le16toh(p_request->wValue));
TU_LOG2("Set interface %d alt %d\r\n", itf, alt);
if (ITF_NUM_AUDIO_STREAMING_SPK == itf && alt != 0) {
// Audio streaming start
blink_interval_ms = BLINK_STREAMING;
}
// Clear buffer when streaming format is changed
spk_data_size = 0;
if(alt != 0)
{
current_resolution = resolutions_per_format[alt-1];
}
return true;
}
bool tud_audio_rx_done_pre_read_cb(uint8_t rhport, uint16_t n_bytes_received, uint8_t func_id, uint8_t ep_out, uint8_t cur_alt_setting)
{
(void)rhport;
(void)func_id;
(void)ep_out;
(void)cur_alt_setting;
spk_data_size = tud_audio_read(spk_buf, n_bytes_received);
tud_audio_write(spk_buf, n_bytes_received);
return true;
}
bool tud_audio_tx_done_pre_load_cb(uint8_t rhport, uint8_t itf, uint8_t ep_in, uint8_t cur_alt_setting)
{
(void)rhport;
(void)itf;
(void)ep_in;
(void)cur_alt_setting;
// This callback could be used to fill microphone data separately
return true;
}
//--------------------------------------------------------------------+
// BLINKING TASK
//--------------------------------------------------------------------+
void led_blinking_task(void)
{
static uint32_t start_ms = 0;
static bool led_state = false;
// Blink every interval ms
if (board_millis() - start_ms < blink_interval_ms) return;
start_ms += blink_interval_ms;
board_led_write(led_state);
led_state = 1 - led_state;
}

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/*
* The MIT License (MIT)
*
* Copyright (c) 2020 Ha Thach (tinyusb.org)
* Copyright (c) 2020 Jerzy Kasenberg
* Copyright (c) 2022 Angel Molina (angelmolinu@gmail.com)
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*
*/
#include "tusb.h"
#include "usb_descriptors.h"
/* A combination of interfaces must have a unique product id, since PC will save device driver after the first plug.
* Same VID/PID with different interface e.g MSC (first), then CDC (later) will possibly cause system error on PC.
*
* Auto ProductID layout's Bitmap:
* [MSB] AUDIO | MIDI | HID | MSC | CDC [LSB]
*/
#define _PID_MAP(itf, n) ( (CFG_TUD_##itf) << (n) )
#define USB_PID (0x4000 | _PID_MAP(CDC, 0) | _PID_MAP(MSC, 1) | _PID_MAP(HID, 2) | \
_PID_MAP(MIDI, 3) | _PID_MAP(AUDIO, 4) | _PID_MAP(VENDOR, 5) )
//--------------------------------------------------------------------+
// Device Descriptors
//--------------------------------------------------------------------+
tusb_desc_device_t const desc_device =
{
.bLength = sizeof(tusb_desc_device_t),
.bDescriptorType = TUSB_DESC_DEVICE,
.bcdUSB = 0x0200,
// Use Interface Association Descriptor (IAD)
// As required by USB Specs IAD's subclass must be common class (2) and protocol must be IAD (1)
.bDeviceClass = TUSB_CLASS_MISC,
.bDeviceSubClass = MISC_SUBCLASS_COMMON,
.bDeviceProtocol = MISC_PROTOCOL_IAD,
.bMaxPacketSize0 = CFG_TUD_ENDPOINT0_SIZE,
.idVendor = 0xCafe,
.idProduct = USB_PID,
.bcdDevice = 0x0100,
.iManufacturer = 0x01,
.iProduct = 0x02,
.iSerialNumber = 0x03,
.bNumConfigurations = 0x01
};
// Invoked when received GET DEVICE DESCRIPTOR
// Application return pointer to descriptor
uint8_t const * tud_descriptor_device_cb(void)
{
return (uint8_t const *)&desc_device;
}
//--------------------------------------------------------------------+
// Configuration Descriptor
//--------------------------------------------------------------------+
#define CONFIG_TOTAL_LEN (TUD_CONFIG_DESC_LEN + CFG_TUD_AUDIO * TUD_AUDIO_HEADSET_STEREO_DESC_LEN + CFG_TUD_CDC * TUD_CDC_DESC_LEN)
#if CFG_TUSB_MCU == OPT_MCU_LPC175X_6X || CFG_TUSB_MCU == OPT_MCU_LPC177X_8X || CFG_TUSB_MCU == OPT_MCU_LPC40XX
// LPC 17xx and 40xx endpoint type (bulk/interrupt/iso) are fixed by its number
// 0 control, 1 In, 2 Bulk, 3 Iso, 4 In etc ...
#define EPNUM_AUDIO_IN 0x03
#define EPNUM_AUDIO_OUT 0x03
#define EPNUM_CDC_NOTIF 0x84
#define EPNUM_CDC_OUT 0x05
#define EPNUM_CDC_IN 0x85
#elif CFG_TUSB_MCU == OPT_MCU_NRF5X
// ISO endpoints for NRF5x are fixed to 0x08 (0x88)
#define EPNUM_AUDIO_IN 0x08
#define EPNUM_AUDIO_OUT 0x08
#define EPNUM_CDC_NOTIF 0x81
#define EPNUM_CDC_OUT 0x02
#define EPNUM_CDC_IN 0x82
#elif CFG_TUSB_MCU == OPT_MCU_SAMG || CFG_TUSB_MCU == OPT_MCU_SAMX7X
// SAMG & SAME70 don't support a same endpoint number with different direction IN and OUT
// e.g EP1 OUT & EP1 IN cannot exist together
#define EPNUM_AUDIO_IN 0x01
#define EPNUM_AUDIO_OUT 0x02
#define EPNUM_CDC_NOTIF 0x83
#define EPNUM_CDC_OUT 0x04
#define EPNUM_CDC_IN 0x85
#elif CFG_TUSB_MCU == OPT_MCU_FT90X || CFG_TUSB_MCU == OPT_MCU_FT93X
// FT9XX doesn't support a same endpoint number with different direction IN and OUT
// e.g EP1 OUT & EP1 IN cannot exist together
#define EPNUM_AUDIO_IN 0x01
#define EPNUM_AUDIO_OUT 0x02
#define EPNUM_CDC_NOTIF 0x83
#define EPNUM_CDC_OUT 0x04
#define EPNUM_CDC_IN 0x85
#else
#define EPNUM_AUDIO_IN 0x01
#define EPNUM_AUDIO_OUT 0x01
#define EPNUM_CDC_NOTIF 0x83
#define EPNUM_CDC_OUT 0x04
#define EPNUM_CDC_IN 0x84
#endif
uint8_t const desc_configuration[] =
{
// Config number, interface count, string index, total length, attribute, power in mA
TUD_CONFIG_DESCRIPTOR(1, ITF_NUM_TOTAL, 0, CONFIG_TOTAL_LEN, 0x00, 100),
// Interface number, string index, EP Out & EP In address, EP size
TUD_AUDIO_HEADSET_STEREO_DESCRIPTOR(2, EPNUM_AUDIO_OUT, EPNUM_AUDIO_IN | 0x80),
// CDC: Interface number, string index, EP notification address and size, EP data address (out, in) and size.
TUD_CDC_DESCRIPTOR(ITF_NUM_CDC, 6, EPNUM_CDC_NOTIF, 8, EPNUM_CDC_OUT, EPNUM_CDC_IN, 64)
};
// Invoked when received GET CONFIGURATION DESCRIPTOR
// Application return pointer to descriptor
// Descriptor contents must exist long enough for transfer to complete
uint8_t const * tud_descriptor_configuration_cb(uint8_t index)
{
(void)index; // for multiple configurations
return desc_configuration;
}
//--------------------------------------------------------------------+
// String Descriptors
//--------------------------------------------------------------------+
// array of pointer to string descriptors
char const* string_desc_arr [] =
{
(const char[]) { 0x09, 0x04 }, // 0: is supported language is English (0x0409)
"TinyUSB", // 1: Manufacturer
"TinyUSB headset", // 2: Product
"000001", // 3: Serials, should use chip ID
"TinyUSB Speakers", // 4: Audio Interface
"TinyUSB Microphone", // 5: Audio Interface
"TinyUSB CDC", // 6: Audio Interface
};
static uint16_t _desc_str[32];
// Invoked when received GET STRING DESCRIPTOR request
// Application return pointer to descriptor, whose contents must exist long enough for transfer to complete
uint16_t const* tud_descriptor_string_cb(uint8_t index, uint16_t langid)
{
(void)langid;
uint8_t chr_count;
if (index == 0)
{
memcpy(&_desc_str[1], string_desc_arr[0], 2);
chr_count = 1;
}
else
{
// Convert ASCII string into UTF-16
if (!(index < sizeof(string_desc_arr)/sizeof(string_desc_arr[0]))) return NULL;
const char* str = string_desc_arr[index];
// Cap at max char
chr_count = (uint8_t) strlen(str);
if (chr_count > 31) chr_count = 31;
for (uint8_t i = 0; i < chr_count; i++)
{
_desc_str[1 + i] = str[i];
}
}
// first byte is length (including header), second byte is string type
_desc_str[0] = (uint16_t) ((TUSB_DESC_STRING << 8 ) | (2*chr_count + 2));
return _desc_str;
}

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/*
* The MIT License (MIT)
*
* Copyright (c) 2020 Jerzy Kasenbreg
* Copyright (c) 2022 Angel Molina (angelmolinu@gmail.com)
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*
*/
#ifndef _USB_DESCRIPTORS_H_
#define _USB_DESCRIPTORS_H_
// #include "tusb.h"
// Unit numbers are arbitrary selected
#define UAC2_ENTITY_CLOCK 0x04
// Speaker path
#define UAC2_ENTITY_SPK_INPUT_TERMINAL 0x01
#define UAC2_ENTITY_SPK_FEATURE_UNIT 0x02
#define UAC2_ENTITY_SPK_OUTPUT_TERMINAL 0x03
// Microphone path
#define UAC2_ENTITY_MIC_INPUT_TERMINAL 0x11
#define UAC2_ENTITY_MIC_OUTPUT_TERMINAL 0x13
enum
{
ITF_NUM_AUDIO_CONTROL = 0,
ITF_NUM_AUDIO_STREAMING_SPK,
ITF_NUM_AUDIO_STREAMING_MIC,
ITF_NUM_CDC,
ITF_NUM_CDC_DATA,
ITF_NUM_TOTAL
};
#define TUD_AUDIO_HEADSET_STEREO_DESC_LEN (TUD_AUDIO_DESC_IAD_LEN\
+ TUD_AUDIO_DESC_STD_AC_LEN\
+ TUD_AUDIO_DESC_CS_AC_LEN\
+ TUD_AUDIO_DESC_CLK_SRC_LEN\
+ TUD_AUDIO_DESC_INPUT_TERM_LEN\
+ TUD_AUDIO_DESC_FEATURE_UNIT_TWO_CHANNEL_LEN\
+ TUD_AUDIO_DESC_OUTPUT_TERM_LEN\
+ TUD_AUDIO_DESC_INPUT_TERM_LEN\
+ TUD_AUDIO_DESC_OUTPUT_TERM_LEN\
/* Interface 1, Alternate 0 */\
+ TUD_AUDIO_DESC_STD_AS_INT_LEN\
/* Interface 1, Alternate 0 */\
+ TUD_AUDIO_DESC_STD_AS_INT_LEN\
+ TUD_AUDIO_DESC_CS_AS_INT_LEN\
+ TUD_AUDIO_DESC_TYPE_I_FORMAT_LEN\
+ TUD_AUDIO_DESC_STD_AS_ISO_EP_LEN\
+ TUD_AUDIO_DESC_CS_AS_ISO_EP_LEN\
/* Interface 1, Alternate 2 */\
+ TUD_AUDIO_DESC_STD_AS_INT_LEN\
+ TUD_AUDIO_DESC_CS_AS_INT_LEN\
+ TUD_AUDIO_DESC_TYPE_I_FORMAT_LEN\
+ TUD_AUDIO_DESC_STD_AS_ISO_EP_LEN\
+ TUD_AUDIO_DESC_CS_AS_ISO_EP_LEN\
/* Interface 2, Alternate 0 */\
+ TUD_AUDIO_DESC_STD_AS_INT_LEN\
/* Interface 2, Alternate 1 */\
+ TUD_AUDIO_DESC_STD_AS_INT_LEN\
+ TUD_AUDIO_DESC_CS_AS_INT_LEN\
+ TUD_AUDIO_DESC_TYPE_I_FORMAT_LEN\
+ TUD_AUDIO_DESC_STD_AS_ISO_EP_LEN\
+ TUD_AUDIO_DESC_CS_AS_ISO_EP_LEN\
/* Interface 2, Alternate 2 */\
+ TUD_AUDIO_DESC_STD_AS_INT_LEN\
+ TUD_AUDIO_DESC_CS_AS_INT_LEN\
+ TUD_AUDIO_DESC_TYPE_I_FORMAT_LEN\
+ TUD_AUDIO_DESC_STD_AS_ISO_EP_LEN\
+ TUD_AUDIO_DESC_CS_AS_ISO_EP_LEN)
#define TUD_AUDIO_HEADSET_STEREO_DESCRIPTOR(_stridx, _epout, _epin) \
/* Standard Interface Association Descriptor (IAD) */\
TUD_AUDIO_DESC_IAD(/*_firstitfs*/ ITF_NUM_AUDIO_CONTROL, /*_nitfs*/ 3, /*_stridx*/ 0x00),\
/* Standard AC Interface Descriptor(4.7.1) */\
TUD_AUDIO_DESC_STD_AC(/*_itfnum*/ ITF_NUM_AUDIO_CONTROL, /*_nEPs*/ 0x00, /*_stridx*/ _stridx),\
/* Class-Specific AC Interface Header Descriptor(4.7.2) */\
TUD_AUDIO_DESC_CS_AC(/*_bcdADC*/ 0x0200, /*_category*/ AUDIO_FUNC_HEADSET, /*_totallen*/ TUD_AUDIO_DESC_CLK_SRC_LEN+TUD_AUDIO_DESC_FEATURE_UNIT_TWO_CHANNEL_LEN+TUD_AUDIO_DESC_INPUT_TERM_LEN+TUD_AUDIO_DESC_OUTPUT_TERM_LEN+TUD_AUDIO_DESC_INPUT_TERM_LEN+TUD_AUDIO_DESC_OUTPUT_TERM_LEN, /*_ctrl*/ AUDIO_CS_AS_INTERFACE_CTRL_LATENCY_POS),\
/* Clock Source Descriptor(4.7.2.1) */\
TUD_AUDIO_DESC_CLK_SRC(/*_clkid*/ UAC2_ENTITY_CLOCK, /*_attr*/ 3, /*_ctrl*/ 7, /*_assocTerm*/ 0x00, /*_stridx*/ 0x00), \
/* Input Terminal Descriptor(4.7.2.4) */\
TUD_AUDIO_DESC_INPUT_TERM(/*_termid*/ UAC2_ENTITY_SPK_INPUT_TERMINAL, /*_termtype*/ AUDIO_TERM_TYPE_USB_STREAMING, /*_assocTerm*/ 0x00, /*_clkid*/ UAC2_ENTITY_CLOCK, /*_nchannelslogical*/ 0x02, /*_channelcfg*/ AUDIO_CHANNEL_CONFIG_NON_PREDEFINED, /*_idxchannelnames*/ 0x00, /*_ctrl*/ 0 * (AUDIO_CTRL_R << AUDIO_IN_TERM_CTRL_CONNECTOR_POS), /*_stridx*/ 0x00),\
/* Feature Unit Descriptor(4.7.2.8) */\
TUD_AUDIO_DESC_FEATURE_UNIT_TWO_CHANNEL(/*_unitid*/ UAC2_ENTITY_SPK_FEATURE_UNIT, /*_srcid*/ UAC2_ENTITY_SPK_INPUT_TERMINAL, /*_ctrlch0master*/ (AUDIO_CTRL_RW << AUDIO_FEATURE_UNIT_CTRL_MUTE_POS | AUDIO_CTRL_RW << AUDIO_FEATURE_UNIT_CTRL_VOLUME_POS), /*_ctrlch1*/ (AUDIO_CTRL_RW << AUDIO_FEATURE_UNIT_CTRL_MUTE_POS | AUDIO_CTRL_RW << AUDIO_FEATURE_UNIT_CTRL_VOLUME_POS), /*_ctrlch2*/ (AUDIO_CTRL_RW << AUDIO_FEATURE_UNIT_CTRL_MUTE_POS | AUDIO_CTRL_RW << AUDIO_FEATURE_UNIT_CTRL_VOLUME_POS), /*_stridx*/ 0x00),\
/* Output Terminal Descriptor(4.7.2.5) */\
TUD_AUDIO_DESC_OUTPUT_TERM(/*_termid*/ UAC2_ENTITY_SPK_OUTPUT_TERMINAL, /*_termtype*/ AUDIO_TERM_TYPE_OUT_HEADPHONES, /*_assocTerm*/ 0x00, /*_srcid*/ UAC2_ENTITY_SPK_FEATURE_UNIT, /*_clkid*/ UAC2_ENTITY_CLOCK, /*_ctrl*/ 0x0000, /*_stridx*/ 0x00),\
/* Input Terminal Descriptor(4.7.2.4) */\
TUD_AUDIO_DESC_INPUT_TERM(/*_termid*/ UAC2_ENTITY_MIC_INPUT_TERMINAL, /*_termtype*/ AUDIO_TERM_TYPE_IN_GENERIC_MIC, /*_assocTerm*/ 0x00, /*_clkid*/ UAC2_ENTITY_CLOCK, /*_nchannelslogical*/ 0x01, /*_channelcfg*/ AUDIO_CHANNEL_CONFIG_NON_PREDEFINED, /*_idxchannelnames*/ 0x00, /*_ctrl*/ 0 * (AUDIO_CTRL_R << AUDIO_IN_TERM_CTRL_CONNECTOR_POS), /*_stridx*/ 0x00),\
/* Output Terminal Descriptor(4.7.2.5) */\
TUD_AUDIO_DESC_OUTPUT_TERM(/*_termid*/ UAC2_ENTITY_MIC_OUTPUT_TERMINAL, /*_termtype*/ AUDIO_TERM_TYPE_USB_STREAMING, /*_assocTerm*/ 0x00, /*_srcid*/ UAC2_ENTITY_MIC_INPUT_TERMINAL, /*_clkid*/ UAC2_ENTITY_CLOCK, /*_ctrl*/ 0x0000, /*_stridx*/ 0x00),\
/* Standard AS Interface Descriptor(4.9.1) */\
/* Interface 1, Alternate 0 - default alternate setting with 0 bandwidth */\
TUD_AUDIO_DESC_STD_AS_INT(/*_itfnum*/ (uint8_t)(ITF_NUM_AUDIO_STREAMING_SPK), /*_altset*/ 0x00, /*_nEPs*/ 0x00, /*_stridx*/ 0x05),\
/* Standard AS Interface Descriptor(4.9.1) */\
/* Interface 1, Alternate 1 - alternate interface for data streaming */\
TUD_AUDIO_DESC_STD_AS_INT(/*_itfnum*/ (uint8_t)(ITF_NUM_AUDIO_STREAMING_SPK), /*_altset*/ 0x01, /*_nEPs*/ 0x01, /*_stridx*/ 0x05),\
/* Class-Specific AS Interface Descriptor(4.9.2) */\
TUD_AUDIO_DESC_CS_AS_INT(/*_termid*/ UAC2_ENTITY_SPK_INPUT_TERMINAL, /*_ctrl*/ AUDIO_CTRL_NONE, /*_formattype*/ AUDIO_FORMAT_TYPE_I, /*_formats*/ AUDIO_DATA_FORMAT_TYPE_I_PCM, /*_nchannelsphysical*/ CFG_TUD_AUDIO_FUNC_1_N_CHANNELS_RX, /*_channelcfg*/ AUDIO_CHANNEL_CONFIG_NON_PREDEFINED, /*_stridx*/ 0x00),\
/* Type I Format Type Descriptor(2.3.1.6 - Audio Formats) */\
TUD_AUDIO_DESC_TYPE_I_FORMAT(CFG_TUD_AUDIO_FUNC_1_FORMAT_1_N_BYTES_PER_SAMPLE_RX, CFG_TUD_AUDIO_FUNC_1_FORMAT_1_RESOLUTION_RX),\
/* Standard AS Isochronous Audio Data Endpoint Descriptor(4.10.1.1) */\
TUD_AUDIO_DESC_STD_AS_ISO_EP(/*_ep*/ _epout, /*_attr*/ (uint8_t) (TUSB_XFER_ISOCHRONOUS | TUSB_ISO_EP_ATT_ADAPTIVE | TUSB_ISO_EP_ATT_DATA), /*_maxEPsize*/ TUD_AUDIO_EP_SIZE(CFG_TUD_AUDIO_FUNC_1_MAX_SAMPLE_RATE, CFG_TUD_AUDIO_FUNC_1_FORMAT_1_N_BYTES_PER_SAMPLE_RX, CFG_TUD_AUDIO_FUNC_1_N_CHANNELS_RX), /*_interval*/ 0x01),\
/* Class-Specific AS Isochronous Audio Data Endpoint Descriptor(4.10.1.2) */\
TUD_AUDIO_DESC_CS_AS_ISO_EP(/*_attr*/ AUDIO_CS_AS_ISO_DATA_EP_ATT_NON_MAX_PACKETS_OK, /*_ctrl*/ AUDIO_CTRL_NONE, /*_lockdelayunit*/ AUDIO_CS_AS_ISO_DATA_EP_LOCK_DELAY_UNIT_MILLISEC, /*_lockdelay*/ 0x0001),\
/* Interface 1, Alternate 2 - alternate interface for data streaming */\
TUD_AUDIO_DESC_STD_AS_INT(/*_itfnum*/ (uint8_t)(ITF_NUM_AUDIO_STREAMING_SPK), /*_altset*/ 0x02, /*_nEPs*/ 0x01, /*_stridx*/ 0x05),\
/* Class-Specific AS Interface Descriptor(4.9.2) */\
TUD_AUDIO_DESC_CS_AS_INT(/*_termid*/ UAC2_ENTITY_SPK_INPUT_TERMINAL, /*_ctrl*/ AUDIO_CTRL_NONE, /*_formattype*/ AUDIO_FORMAT_TYPE_I, /*_formats*/ AUDIO_DATA_FORMAT_TYPE_I_PCM, /*_nchannelsphysical*/ CFG_TUD_AUDIO_FUNC_1_N_CHANNELS_RX, /*_channelcfg*/ AUDIO_CHANNEL_CONFIG_NON_PREDEFINED, /*_stridx*/ 0x00),\
/* Type I Format Type Descriptor(2.3.1.6 - Audio Formats) */\
TUD_AUDIO_DESC_TYPE_I_FORMAT(CFG_TUD_AUDIO_FUNC_1_FORMAT_2_N_BYTES_PER_SAMPLE_RX, CFG_TUD_AUDIO_FUNC_1_FORMAT_2_RESOLUTION_RX),\
/* Standard AS Isochronous Audio Data Endpoint Descriptor(4.10.1.1) */\
TUD_AUDIO_DESC_STD_AS_ISO_EP(/*_ep*/ _epout, /*_attr*/ (uint8_t) (TUSB_XFER_ISOCHRONOUS | TUSB_ISO_EP_ATT_ADAPTIVE | TUSB_ISO_EP_ATT_DATA), /*_maxEPsize*/ TUD_AUDIO_EP_SIZE(CFG_TUD_AUDIO_FUNC_1_MAX_SAMPLE_RATE, CFG_TUD_AUDIO_FUNC_1_FORMAT_2_N_BYTES_PER_SAMPLE_RX, CFG_TUD_AUDIO_FUNC_1_N_CHANNELS_RX), /*_interval*/ 0x01),\
/* Class-Specific AS Isochronous Audio Data Endpoint Descriptor(4.10.1.2) */\
TUD_AUDIO_DESC_CS_AS_ISO_EP(/*_attr*/ AUDIO_CS_AS_ISO_DATA_EP_ATT_NON_MAX_PACKETS_OK, /*_ctrl*/ AUDIO_CTRL_NONE, /*_lockdelayunit*/ AUDIO_CS_AS_ISO_DATA_EP_LOCK_DELAY_UNIT_MILLISEC, /*_lockdelay*/ 0x0001),\
/* Standard AS Interface Descriptor(4.9.1) */\
/* Interface 2, Alternate 0 - default alternate setting with 0 bandwidth */\
TUD_AUDIO_DESC_STD_AS_INT(/*_itfnum*/ (uint8_t)(ITF_NUM_AUDIO_STREAMING_MIC), /*_altset*/ 0x00, /*_nEPs*/ 0x00, /*_stridx*/ 0x04),\
/* Standard AS Interface Descriptor(4.9.1) */\
/* Interface 2, Alternate 1 - alternate interface for data streaming */\
TUD_AUDIO_DESC_STD_AS_INT(/*_itfnum*/ (uint8_t)(ITF_NUM_AUDIO_STREAMING_MIC), /*_altset*/ 0x01, /*_nEPs*/ 0x01, /*_stridx*/ 0x04),\
/* Class-Specific AS Interface Descriptor(4.9.2) */\
TUD_AUDIO_DESC_CS_AS_INT(/*_termid*/ UAC2_ENTITY_MIC_OUTPUT_TERMINAL, /*_ctrl*/ AUDIO_CTRL_NONE, /*_formattype*/ AUDIO_FORMAT_TYPE_I, /*_formats*/ AUDIO_DATA_FORMAT_TYPE_I_PCM, /*_nchannelsphysical*/ CFG_TUD_AUDIO_FUNC_1_N_CHANNELS_TX, /*_channelcfg*/ AUDIO_CHANNEL_CONFIG_NON_PREDEFINED, /*_stridx*/ 0x00),\
/* Type I Format Type Descriptor(2.3.1.6 - Audio Formats) */\
TUD_AUDIO_DESC_TYPE_I_FORMAT(CFG_TUD_AUDIO_FUNC_1_FORMAT_1_N_BYTES_PER_SAMPLE_TX, CFG_TUD_AUDIO_FUNC_1_FORMAT_1_RESOLUTION_TX),\
/* Standard AS Isochronous Audio Data Endpoint Descriptor(4.10.1.1) */\
TUD_AUDIO_DESC_STD_AS_ISO_EP(/*_ep*/ _epin, /*_attr*/ (uint8_t) (TUSB_XFER_ISOCHRONOUS | TUSB_ISO_EP_ATT_ASYNCHRONOUS | TUSB_ISO_EP_ATT_DATA), /*_maxEPsize*/ TUD_AUDIO_EP_SIZE(CFG_TUD_AUDIO_FUNC_1_MAX_SAMPLE_RATE, CFG_TUD_AUDIO_FUNC_1_FORMAT_1_N_BYTES_PER_SAMPLE_TX, CFG_TUD_AUDIO_FUNC_1_N_CHANNELS_TX), /*_interval*/ 0x01),\
/* Class-Specific AS Isochronous Audio Data Endpoint Descriptor(4.10.1.2) */\
TUD_AUDIO_DESC_CS_AS_ISO_EP(/*_attr*/ AUDIO_CS_AS_ISO_DATA_EP_ATT_NON_MAX_PACKETS_OK, /*_ctrl*/ AUDIO_CTRL_NONE, /*_lockdelayunit*/ AUDIO_CS_AS_ISO_DATA_EP_LOCK_DELAY_UNIT_UNDEFINED, /*_lockdelay*/ 0x0000),\
/* Interface 2, Alternate 2 - alternate interface for data streaming */\
TUD_AUDIO_DESC_STD_AS_INT(/*_itfnum*/ (uint8_t)(ITF_NUM_AUDIO_STREAMING_MIC), /*_altset*/ 0x02, /*_nEPs*/ 0x01, /*_stridx*/ 0x04),\
/* Class-Specific AS Interface Descriptor(4.9.2) */\
TUD_AUDIO_DESC_CS_AS_INT(/*_termid*/ UAC2_ENTITY_MIC_OUTPUT_TERMINAL, /*_ctrl*/ AUDIO_CTRL_NONE, /*_formattype*/ AUDIO_FORMAT_TYPE_I, /*_formats*/ AUDIO_DATA_FORMAT_TYPE_I_PCM, /*_nchannelsphysical*/ CFG_TUD_AUDIO_FUNC_1_N_CHANNELS_TX, /*_channelcfg*/ AUDIO_CHANNEL_CONFIG_NON_PREDEFINED, /*_stridx*/ 0x00),\
/* Type I Format Type Descriptor(2.3.1.6 - Audio Formats) */\
TUD_AUDIO_DESC_TYPE_I_FORMAT(CFG_TUD_AUDIO_FUNC_1_FORMAT_2_N_BYTES_PER_SAMPLE_TX, CFG_TUD_AUDIO_FUNC_1_FORMAT_2_RESOLUTION_TX),\
/* Standard AS Isochronous Audio Data Endpoint Descriptor(4.10.1.1) */\
TUD_AUDIO_DESC_STD_AS_ISO_EP(/*_ep*/ _epin, /*_attr*/ (uint8_t) (TUSB_XFER_ISOCHRONOUS | TUSB_ISO_EP_ATT_ASYNCHRONOUS | TUSB_ISO_EP_ATT_DATA), /*_maxEPsize*/ TUD_AUDIO_EP_SIZE(CFG_TUD_AUDIO_FUNC_1_MAX_SAMPLE_RATE, CFG_TUD_AUDIO_FUNC_1_FORMAT_2_N_BYTES_PER_SAMPLE_TX, CFG_TUD_AUDIO_FUNC_1_N_CHANNELS_TX), /*_interval*/ 0x01),\
/* Class-Specific AS Isochronous Audio Data Endpoint Descriptor(4.10.1.2) */\
TUD_AUDIO_DESC_CS_AS_ISO_EP(/*_attr*/ AUDIO_CS_AS_ISO_DATA_EP_ATT_NON_MAX_PACKETS_OK, /*_ctrl*/ AUDIO_CTRL_NONE, /*_lockdelayunit*/ AUDIO_CS_AS_ISO_DATA_EP_LOCK_DELAY_UNIT_UNDEFINED, /*_lockdelay*/ 0x0000)
#endif