From f2d455226ac7b83dfd1e7ef56124e6fecfc4a40e Mon Sep 17 00:00:00 2001 From: HiFiPhile Date: Sun, 19 Nov 2023 23:46:00 +0100 Subject: [PATCH] Add UAC2 speaker with feedback example. --- .../device/uac2_speaker_fb/CMakeLists.txt | 33 ++ examples/device/uac2_speaker_fb/Makefile | 11 + examples/device/uac2_speaker_fb/skip.txt | 8 + .../device/uac2_speaker_fb/src/audio_debug.py | 63 +++ .../device/uac2_speaker_fb/src/common_types.h | 52 ++ examples/device/uac2_speaker_fb/src/main.c | 478 ++++++++++++++++++ .../device/uac2_speaker_fb/src/tusb_config.h | 157 ++++++ .../uac2_speaker_fb/src/usb_descriptors.c | 234 +++++++++ .../uac2_speaker_fb/src/usb_descriptors.h | 82 +++ 9 files changed, 1118 insertions(+) create mode 100644 examples/device/uac2_speaker_fb/CMakeLists.txt create mode 100644 examples/device/uac2_speaker_fb/Makefile create mode 100644 examples/device/uac2_speaker_fb/skip.txt create mode 100644 examples/device/uac2_speaker_fb/src/audio_debug.py create mode 100644 examples/device/uac2_speaker_fb/src/common_types.h create mode 100644 examples/device/uac2_speaker_fb/src/main.c create mode 100644 examples/device/uac2_speaker_fb/src/tusb_config.h create mode 100644 examples/device/uac2_speaker_fb/src/usb_descriptors.c create mode 100644 examples/device/uac2_speaker_fb/src/usb_descriptors.h diff --git a/examples/device/uac2_speaker_fb/CMakeLists.txt b/examples/device/uac2_speaker_fb/CMakeLists.txt new file mode 100644 index 000000000..e92a57148 --- /dev/null +++ b/examples/device/uac2_speaker_fb/CMakeLists.txt @@ -0,0 +1,33 @@ +cmake_minimum_required(VERSION 3.17) + +include(${CMAKE_CURRENT_SOURCE_DIR}/../../../hw/bsp/family_support.cmake) + +# gets PROJECT name for the example (e.g. -) +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/main.c + ${CMAKE_CURRENT_SOURCE_DIR}/src/usb_descriptors.c + ) + +# Example include +target_include_directories(${PROJECT} PUBLIC + ${CMAKE_CURRENT_SOURCE_DIR}/src + ) + +# Configure compilation flags and libraries for the example without RTOS. +# See the corresponding function in hw/bsp/FAMILY/family.cmake for details. +family_configure_device_example(${PROJECT} noos) diff --git a/examples/device/uac2_speaker_fb/Makefile b/examples/device/uac2_speaker_fb/Makefile new file mode 100644 index 000000000..7fa475da5 --- /dev/null +++ b/examples/device/uac2_speaker_fb/Makefile @@ -0,0 +1,11 @@ +include ../../build_system/make/make.mk + +INC += \ + src \ + $(TOP)/hw \ + +# Example source +EXAMPLE_SOURCE += $(wildcard src/*.c) +SRC_C += $(addprefix $(CURRENT_PATH)/, $(EXAMPLE_SOURCE)) + +include ../../build_system/make/rules.mk diff --git a/examples/device/uac2_speaker_fb/skip.txt b/examples/device/uac2_speaker_fb/skip.txt new file mode 100644 index 000000000..234f1ebed --- /dev/null +++ b/examples/device/uac2_speaker_fb/skip.txt @@ -0,0 +1,8 @@ +mcu:LPC11UXX +mcu:LPC13XX +mcu:NUC121 +mcu:SAMD11 +mcu:SAME5X +mcu:SAMG +board:stm32l052dap52 +family:broadcom_64bit diff --git a/examples/device/uac2_speaker_fb/src/audio_debug.py b/examples/device/uac2_speaker_fb/src/audio_debug.py new file mode 100644 index 000000000..182d6ca89 --- /dev/null +++ b/examples/device/uac2_speaker_fb/src/audio_debug.py @@ -0,0 +1,63 @@ +# Install python3 HID package https://pypi.org/project/hid/ +import hid +from ctypes import * +import matplotlib.pyplot as plt +import matplotlib.animation as animation + +# Example must be compiled with CFG_AUDIO_DEBUG=1 +VID = 0xcafe +PID = 0x4014 + +CFG_TUD_AUDIO_FUNC_1_N_CHANNELS_RX = 2 + +class audio_debug_info_t (Structure): + _fields_ = [("sample_rate", c_uint32), + ("alt_settings", c_uint8), + ("mute", (CFG_TUD_AUDIO_FUNC_1_N_CHANNELS_RX + 1) * c_int8), + ("volume", (CFG_TUD_AUDIO_FUNC_1_N_CHANNELS_RX + 1) * c_int16), + ("fifo_size", c_uint16), + ("fifo_count", c_uint16), + ("fifo_count_avg", c_uint16) + ] + +dev = hid.Device(VID, PID) + +if dev: + # Create figure for plotting + fig = plt.figure() + ax = fig.add_subplot(1, 1, 1) + fifo_avg = [] + fifo_cnt = [] + # This function is called periodically from FuncAnimation + def animate(i): + info = None + for i in range(30): + str_in = dev.read(64, 10) + if str_in: + info = audio_debug_info_t.from_buffer_copy(str_in) + + global fifo_avg + global fifo_cnt + fifo_avg.append(info.fifo_count_avg) + fifo_cnt.append(info.fifo_count) + + # Limit to 1000 items + fifo_avg = fifo_avg[-1000:] + fifo_cnt = fifo_cnt[-1000:] + + if info is not None: + # Draw x and y lists + ax.clear() + ax.plot(fifo_cnt, label='FIFO count') + ax.plot(fifo_avg, label='FIFO average') + ax.legend() + ax.set_ylim(bottom=0, top=info.fifo_size) + + # Format plot + plt.title('FIFO information') + plt.grid() + + print(f'Sample rate:{info.sample_rate} | Alt settings:{info.alt_settings} | Volume:{info.volume[:]}') + + ani = animation.FuncAnimation(fig, animate, interval=10) + plt.show() diff --git a/examples/device/uac2_speaker_fb/src/common_types.h b/examples/device/uac2_speaker_fb/src/common_types.h new file mode 100644 index 000000000..174e26671 --- /dev/null +++ b/examples/device/uac2_speaker_fb/src/common_types.h @@ -0,0 +1,52 @@ +/* + * The MIT License (MIT) + * + * Copyright (c) 2023 HiFiPhile + * + * 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 _COMMON_TYPES_H_ +#define _COMMON_TYPES_H_ + +enum +{ + ITF_NUM_AUDIO_CONTROL = 0, + ITF_NUM_AUDIO_STREAMING, +#if CFG_AUDIO_DEBUG + ITF_NUM_DEBUG, +#endif + ITF_NUM_TOTAL +}; + +#if CFG_AUDIO_DEBUG +typedef struct + { + uint32_t sample_rate; + uint8_t alt_settings; + int8_t mute[CFG_TUD_AUDIO_FUNC_1_N_CHANNELS_RX + 1]; + int16_t volume[CFG_TUD_AUDIO_FUNC_1_N_CHANNELS_RX + 1]; + uint16_t fifo_size; + uint16_t fifo_count; + uint16_t fifo_count_avg; + } audio_debug_info_t; +#endif + +#endif diff --git a/examples/device/uac2_speaker_fb/src/main.c b/examples/device/uac2_speaker_fb/src/main.c new file mode 100644 index 000000000..6d0e7acff --- /dev/null +++ b/examples/device/uac2_speaker_fb/src/main.c @@ -0,0 +1,478 @@ +/* + * The MIT License (MIT) + * + * 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. + * + */ + +#include +#include + +#include "bsp/board_api.h" +#include "tusb.h" +#include "usb_descriptors.h" +#include "common_types.h" + +//--------------------------------------------------------------------+ +// MACRO CONSTANT TYPEDEF PROTOTYPES +//--------------------------------------------------------------------+ + +// List of supported sample rates +#if defined(__RX__) + const uint32_t sample_rates[] = {44100, 48000}; +#else + const uint32_t sample_rates[] = {44100, 48000, 88200, 96000}; +#endif + +uint32_t current_sample_rate = 44100; + +#define N_SAMPLE_RATES TU_ARRAY_SIZE(sample_rates) + +/* 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, +}; + +static 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 speaker data +uint16_t i2s_dummy_buffer[CFG_TUD_AUDIO_FUNC_1_EP_OUT_SW_BUF_SZ/2]; + +void led_blinking_task(void); +void audio_task(void); + +#if CFG_AUDIO_DEBUG +void audio_debug_task(void); +uint8_t current_alt_settings; +#endif + +/*------------- MAIN -------------*/ +int main(void) +{ + board_init(); + + // init device stack on configured roothub port + tud_init(BOARD_TUD_RHPORT); + + if (board_init_after_tusb) { + board_init_after_tusb(); + } + + TU_LOG1("Speaker running\r\n"); + + while (1) + { + tud_task(); // TinyUSB device task + led_blinking_task(); +#if CFG_AUDIO_DEBUG + audio_debug_task(); +#endif + audio_task(); + } +} + +//--------------------------------------------------------------------+ +// 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 = tud_mounted() ? BLINK_MOUNTED : BLINK_NOT_MOUNTED; +} + +//--------------------------------------------------------------------+ +// Application Callback API Implementations +//--------------------------------------------------------------------+ + +// 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_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_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_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; + } +} + +// 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_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_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 == itf && alt == 0) + 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 == itf && alt != 0) + blink_interval_ms = BLINK_STREAMING; + +#if CFG_AUDIO_DEBUG + current_alt_settings = alt; +#endif + + return true; +} + +void tud_audio_feedback_params_cb(uint8_t func_id, uint8_t alt_itf, audio_feedback_params_t* feedback_param) +{ + (void)func_id; + (void)alt_itf; + // Set feedback method to fifo counting + feedback_param->method = AUDIO_FEEDBACK_METHOD_FIFO_COUNT; + feedback_param->sample_freq = current_sample_rate; +} + +//--------------------------------------------------------------------+ +// AUDIO Task +//--------------------------------------------------------------------+ + +void audio_task(void) +{ + // Replace audio_task() with your I2S transmit callback. + // Here we simulate a callback called every 1ms. + static uint32_t start_ms = 0; + uint32_t curr_ms = board_millis(); + if ( start_ms == curr_ms ) return; // not enough time + start_ms = curr_ms; + + uint16_t length = current_sample_rate/1000 * CFG_TUD_AUDIO_FUNC_1_N_BYTES_PER_SAMPLE_RX * CFG_TUD_AUDIO_FUNC_1_N_CHANNELS_RX; + + if (current_sample_rate == 44100 && (curr_ms % 10 == 0)) + { + // Take one more sample every 10 cycles, to have a average reading speed of 44.1 + // This correction is not needed in real world cases + length += CFG_TUD_AUDIO_FUNC_1_N_BYTES_PER_SAMPLE_RX * CFG_TUD_AUDIO_FUNC_1_N_CHANNELS_RX; + } else + if (current_sample_rate == 88200 && (curr_ms % 5 == 0)) + { + // Take one more sample every 5 cycles, to have a average reading speed of 88.2 + // This correction is not needed in real world cases + length += CFG_TUD_AUDIO_FUNC_1_N_BYTES_PER_SAMPLE_RX * CFG_TUD_AUDIO_FUNC_1_N_CHANNELS_RX; + } + + tud_audio_read(i2s_dummy_buffer, length); +} + +//--------------------------------------------------------------------+ +// 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; +} + +#if CFG_AUDIO_DEBUG +//--------------------------------------------------------------------+ +// HID interface for audio debug +//--------------------------------------------------------------------+ + +// Every 1ms, we will sent 1 debug information report +void audio_debug_task(void) +{ + static uint32_t start_ms = 0; + uint32_t curr_ms = board_millis(); + if ( start_ms == curr_ms ) return; // not enough time + start_ms = curr_ms; + + uint16_t fifo_count = tud_audio_available(); + static uint32_t fifo_count_avg; + + // Same averaging method used in UAC2 class + fifo_count_avg = (uint32_t)(((uint64_t)fifo_count_avg * 63 + ((uint32_t)fifo_count << 16)) >> 6); + + audio_debug_info_t debug_info; + debug_info.sample_rate = current_sample_rate; + debug_info.alt_settings = current_alt_settings; + debug_info.fifo_size = CFG_TUD_AUDIO_FUNC_1_EP_OUT_SW_BUF_SZ; + debug_info.fifo_count = fifo_count; + debug_info.fifo_count_avg = fifo_count_avg >> 16; + for (int i = 0; i < CFG_TUD_AUDIO_FUNC_1_N_CHANNELS_RX + 1; i++) + { + debug_info.mute[i] = mute[i]; + debug_info.volume[i] = volume[i]; + } + + if(tud_hid_ready()) + tud_hid_report(0, &debug_info, sizeof(debug_info)); +} + +// Invoked when received GET_REPORT control request +// Unused here +uint16_t tud_hid_get_report_cb(uint8_t itf, uint8_t report_id, hid_report_type_t report_type, uint8_t* buffer, uint16_t reqlen) +{ + // TODO not Implemented + (void) itf; + (void) report_id; + (void) report_type; + (void) buffer; + (void) reqlen; + + return 0; +} + +// Invoked when received SET_REPORT control request or +// Unused here +void tud_hid_set_report_cb(uint8_t itf, uint8_t report_id, hid_report_type_t report_type, uint8_t const* buffer, uint16_t bufsize) +{ + // This example doesn't use multiple report and report ID + (void) itf; + (void) report_id; + (void) report_type; + (void) buffer; + (void) bufsize; +} + +#endif diff --git a/examples/device/uac2_speaker_fb/src/tusb_config.h b/examples/device/uac2_speaker_fb/src/tusb_config.h new file mode 100644 index 000000000..497104541 --- /dev/null +++ b/examples/device/uac2_speaker_fb/src/tusb_config.h @@ -0,0 +1,157 @@ +/* + * 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 + +// It's recommended to disable debug unless for control requests debugging, +// as the extra time needed will impact data stream ! +#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 +//-------------------------------------------------------------------- + +// Expose audio class debug information via HID interface +#ifndef CFG_AUDIO_DEBUG +#define CFG_AUDIO_DEBUG 1 +#endif + +#ifndef CFG_TUD_ENDPOINT0_SIZE +#define CFG_TUD_ENDPOINT0_SIZE 64 +#endif + +#define CFG_TUD_HID_EP_BUFSIZE 64 + +//------------- CLASS -------------// +#define CFG_TUD_AUDIO 1 + +#if CFG_AUDIO_DEBUG +#define CFG_TUD_HID 1 +#else +#define CFG_TUD_HID 0 +#endif + +#define CFG_TUD_CDC 0 +#define CFG_TUD_MSC 0 +#define CFG_TUD_MIDI 0 +#define CFG_TUD_VENDOR 0 + +//-------------------------------------------------------------------- +// AUDIO CLASS DRIVER CONFIGURATION +//-------------------------------------------------------------------- + +#define CFG_TUD_AUDIO_FUNC_1_DESC_LEN TUD_AUDIO_SPEAKER_STEREO_FB_DESC_LEN + +// Audio format type I specifications +#if defined(__RX__) +#define CFG_TUD_AUDIO_FUNC_1_MAX_SAMPLE_RATE 48000 +#else +#define CFG_TUD_AUDIO_FUNC_1_MAX_SAMPLE_RATE 96000 +#endif + +#define CFG_TUD_AUDIO_FUNC_1_N_CHANNELS_RX 2 + +// 16bit in 16bit slots +#define CFG_TUD_AUDIO_FUNC_1_N_BYTES_PER_SAMPLE_RX 2 +#define CFG_TUD_AUDIO_FUNC_1_RESOLUTION_RX 16 + +// 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_FUNC_1_EP_OUT_SZ_MAX TUD_AUDIO_EP_SIZE(CFG_TUD_AUDIO_FUNC_1_MAX_SAMPLE_RATE, CFG_TUD_AUDIO_FUNC_1_N_BYTES_PER_SAMPLE_RX, CFG_TUD_AUDIO_FUNC_1_N_CHANNELS_RX) +#define CFG_TUD_AUDIO_FUNC_1_EP_OUT_SW_BUF_SZ (TUD_OPT_HIGH_SPEED ? 32 : 4) * CFG_TUD_AUDIO_FUNC_1_EP_OUT_SZ_MAX // Example read FIFO every 1ms, so it should be 8 times larger for HS device + +// Enable feedback EP +#define CFG_TUD_AUDIO_ENABLE_FEEDBACK_EP 1 + +// 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 1 + +// Size of control request buffer +#define CFG_TUD_AUDIO_FUNC_1_CTRL_BUF_SZ 64 + +#ifdef __cplusplus +} +#endif + +#endif /* _TUSB_CONFIG_H_ */ diff --git a/examples/device/uac2_speaker_fb/src/usb_descriptors.c b/examples/device/uac2_speaker_fb/src/usb_descriptors.c new file mode 100644 index 000000000..864b689ff --- /dev/null +++ b/examples/device/uac2_speaker_fb/src/usb_descriptors.c @@ -0,0 +1,234 @@ +/* + * The MIT License (MIT) + * + * Copyright (c) 2023 HiFiPhile + * + * 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_api.h" +#include "tusb.h" +#include "usb_descriptors.h" +#include "common_types.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) for Audio + // 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; +} + +#if CFG_AUDIO_DEBUG +//--------------------------------------------------------------------+ +// HID Report Descriptor +//--------------------------------------------------------------------+ + +uint8_t const desc_hid_report[] = +{ + HID_USAGE_PAGE_N ( HID_USAGE_PAGE_VENDOR, 2 ),\ + HID_USAGE ( 0x01 ),\ + HID_COLLECTION ( HID_COLLECTION_APPLICATION ),\ + HID_USAGE ( 0x02 ),\ + HID_LOGICAL_MIN ( 0x00 ),\ + HID_LOGICAL_MAX_N ( 0xff, 2 ),\ + HID_REPORT_SIZE ( 8 ),\ + HID_REPORT_COUNT( sizeof(audio_debug_info_t) ),\ + HID_INPUT ( HID_DATA | HID_VARIABLE | HID_ABSOLUTE ),\ + HID_COLLECTION_END +}; + +// Invoked when received GET HID REPORT DESCRIPTOR +// Application return pointer to descriptor +// Descriptor contents must exist long enough for transfer to complete +uint8_t const * tud_hid_descriptor_report_cb(uint8_t itf) +{ + (void) itf; + return desc_hid_report; +} +#endif + +//--------------------------------------------------------------------+ +// Configuration Descriptor +//--------------------------------------------------------------------+ + +#if CFG_AUDIO_DEBUG + #define CONFIG_TOTAL_LEN (TUD_CONFIG_DESC_LEN + TUD_AUDIO_SPEAKER_STEREO_FB_DESC_LEN + TUD_HID_DESC_LEN) +#else + #define CONFIG_TOTAL_LEN (TUD_CONFIG_DESC_LEN + TUD_AUDIO_SPEAKER_STEREO_FB_DESC_LEN) +#endif + +#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_FB 0x03 + #define EPNUM_AUDIO_OUT 0x03 + #define EPNUM_DEBUG 0x04 + +#elif CFG_TUSB_MCU == OPT_MCU_NRF5X + // ISO endpoints for NRF5x are fixed to 0x08 (0x88) + #define EPNUM_AUDIO_FB 0x08 + #define EPNUM_AUDIO_OUT 0x08 + #define EPNUM_DEBUG 0x01 + +#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_FB 0x01 + #define EPNUM_AUDIO_OUT 0x02 + #define EPNUM_DEBUG 0x03 + +#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_FB 0x01 + #define EPNUM_AUDIO_OUT 0x02 + #define EPNUM_DEBUG 0x03 + +#else + #define EPNUM_AUDIO_FB 0x01 + #define EPNUM_AUDIO_OUT 0x01 + #define EPNUM_DEBUG 0x02 +#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, byte per sample, bit per sample, EP Out, EP size, EP feedback + TUD_AUDIO_SPEAKER_STEREO_FB_DESCRIPTOR(0, 4, CFG_TUD_AUDIO_FUNC_1_N_BYTES_PER_SAMPLE_RX, CFG_TUD_AUDIO_FUNC_1_RESOLUTION_RX, EPNUM_AUDIO_OUT, CFG_TUD_AUDIO_FUNC_1_EP_OUT_SZ_MAX, EPNUM_AUDIO_FB | 0x80), + +#if CFG_AUDIO_DEBUG + // Interface number, string index, protocol, report descriptor len, EP In address, size & polling interval + TUD_HID_DESCRIPTOR(ITF_NUM_DEBUG, 0, HID_ITF_PROTOCOL_NONE, sizeof(desc_hid_report), EPNUM_DEBUG | 0x80, CFG_TUD_HID_EP_BUFSIZE, 7) +#endif +}; + +// 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 +//--------------------------------------------------------------------+ + +// String Descriptor Index +enum { + STRID_LANGID = 0, + STRID_MANUFACTURER, + STRID_PRODUCT, + STRID_SERIAL, +}; + +// 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 Speaker", // 2: Product + NULL, // 3: Serials will use unique ID if possible + "UAC2 Speaker", // 4: Audio Interface +}; + +static uint16_t _desc_str[32 + 1]; + +// 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; + size_t chr_count; + + switch ( index ) { + case STRID_LANGID: + memcpy(&_desc_str[1], string_desc_arr[0], 2); + chr_count = 1; + break; + + case STRID_SERIAL: + chr_count = board_usb_get_serial(_desc_str + 1, 32); + break; + + default: + // Note: the 0xEE index string is a Microsoft OS 1.0 Descriptors. + // https://docs.microsoft.com/en-us/windows-hardware/drivers/usbcon/microsoft-defined-usb-descriptors + + 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 = strlen(str); + size_t const max_count = sizeof(_desc_str) / sizeof(_desc_str[0]) - 1; // -1 for string type + if ( chr_count > max_count ) chr_count = max_count; + + // Convert ASCII string into UTF-16 + for ( size_t i = 0; i < chr_count; i++ ) { + _desc_str[1 + i] = str[i]; + } + break; + } + + // 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; +} diff --git a/examples/device/uac2_speaker_fb/src/usb_descriptors.h b/examples/device/uac2_speaker_fb/src/usb_descriptors.h new file mode 100644 index 000000000..8157f02a0 --- /dev/null +++ b/examples/device/uac2_speaker_fb/src/usb_descriptors.h @@ -0,0 +1,82 @@ +/* + * The MIT License (MIT) + * + * Copyright (c) 2023 HiFiPhile + * + * 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_ + +// Defined in TUD_AUDIO_SPEAKER_STEREO_FB_DESCRIPTOR +#define UAC2_ENTITY_CLOCK 0x04 +#define UAC2_ENTITY_INPUT_TERMINAL 0x01 +#define UAC2_ENTITY_FEATURE_UNIT 0x02 +#define UAC2_ENTITY_OUTPUT_TERMINAL 0x03 + +#define TUD_AUDIO_SPEAKER_STEREO_FB_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_OUTPUT_TERM_LEN\ + + TUD_AUDIO_DESC_FEATURE_UNIT_TWO_CHANNEL_LEN\ + + TUD_AUDIO_DESC_STD_AS_INT_LEN\ + + 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\ + + TUD_AUDIO_DESC_STD_AS_ISO_FB_EP_LEN) + +#define TUD_AUDIO_SPEAKER_STEREO_FB_DESCRIPTOR(_itfnum, _stridx, _nBytesPerSample, _nBitsUsedPerSample, _epout, _epsize, _epfb) \ + /* Standard Interface Association Descriptor (IAD) */\ + TUD_AUDIO_DESC_IAD(/*_firstitf*/ _itfnum, /*_nitfs*/ 0x02, /*_stridx*/ 0x00),\ + /* Standard AC Interface Descriptor(4.7.1) */\ + TUD_AUDIO_DESC_STD_AC(/*_itfnum*/ _itfnum, /*_nEPs*/ 0x00, /*_stridx*/ _stridx),\ + /* Class-Specific AC Interface Header Descriptor(4.7.2) */\ + TUD_AUDIO_DESC_CS_AC(/*_bcdADC*/ 0x0200, /*_category*/ AUDIO_FUNC_DESKTOP_SPEAKER, /*_totallen*/ TUD_AUDIO_DESC_CLK_SRC_LEN+TUD_AUDIO_DESC_INPUT_TERM_LEN+TUD_AUDIO_DESC_OUTPUT_TERM_LEN+TUD_AUDIO_DESC_FEATURE_UNIT_TWO_CHANNEL_LEN, /*_ctrl*/ AUDIO_CS_AS_INTERFACE_CTRL_LATENCY_POS),\ + /* Clock Source Descriptor(4.7.2.1) */\ + TUD_AUDIO_DESC_CLK_SRC(/*_clkid*/ 0x04, /*_attr*/ AUDIO_CLOCK_SOURCE_ATT_INT_PRO_CLK, /*_ctrl*/ (AUDIO_CTRL_RW << AUDIO_CLOCK_SOURCE_CTRL_CLK_FRQ_POS), /*_assocTerm*/ 0x01, /*_stridx*/ 0x00),\ + /* Input Terminal Descriptor(4.7.2.4) */\ + TUD_AUDIO_DESC_INPUT_TERM(/*_termid*/ 0x01, /*_termtype*/ AUDIO_TERM_TYPE_USB_STREAMING, /*_assocTerm*/ 0x00, /*_clkid*/ 0x04, /*_nchannelslogical*/ 0x02, /*_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*/ 0x03, /*_termtype*/ AUDIO_TERM_TYPE_OUT_DESKTOP_SPEAKER, /*_assocTerm*/ 0x01, /*_srcid*/ 0x02, /*_clkid*/ 0x04, /*_ctrl*/ 0x0000, /*_stridx*/ 0x00),\ + /* Feature Unit Descriptor(4.7.2.8) */\ + TUD_AUDIO_DESC_FEATURE_UNIT_TWO_CHANNEL(/*_unitid*/ 0x02, /*_srcid*/ 0x01, /*_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),\ + /* 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)((_itfnum) + 1), /*_altset*/ 0x00, /*_nEPs*/ 0x00, /*_stridx*/ 0x00),\ + /* 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)((_itfnum) + 1), /*_altset*/ 0x01, /*_nEPs*/ 0x02, /*_stridx*/ 0x00),\ + /* Class-Specific AS Interface Descriptor(4.9.2) */\ + TUD_AUDIO_DESC_CS_AS_INT(/*_termid*/ 0x01, /*_ctrl*/ AUDIO_CTRL_NONE, /*_formattype*/ AUDIO_FORMAT_TYPE_I, /*_formats*/ AUDIO_DATA_FORMAT_TYPE_I_PCM, /*_nchannelsphysical*/ 0x02, /*_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(_nBytesPerSample, _nBitsUsedPerSample),\ + /* Standard AS Isochronous Audio Data Endpoint Descriptor(4.10.1.1) */\ + TUD_AUDIO_DESC_STD_AS_ISO_EP(/*_ep*/ _epout, /*_attr*/ (uint8_t) ((uint8_t)TUSB_XFER_ISOCHRONOUS | (uint8_t)TUSB_ISO_EP_ATT_ASYNCHRONOUS | (uint8_t)TUSB_ISO_EP_ATT_DATA), /*_maxEPsize*/ _epsize, /*_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 Isochronous Feedback Endpoint Descriptor(4.10.2.1) */\ + TUD_AUDIO_DESC_STD_AS_ISO_FB_EP(/*_ep*/ _epfb, /*_interval*/ TUD_OPT_HIGH_SPEED ? 4 : 1)\ + +#endif