diff options
Diffstat (limited to 'examples/device/uac2_headset/src/main.c')
| -rw-r--r-- | examples/device/uac2_headset/src/main.c | 544 |
1 files changed, 355 insertions, 189 deletions
diff --git a/examples/device/uac2_headset/src/main.c b/examples/device/uac2_headset/src/main.c index 6b2ab0973..96fa66f1e 100644 --- a/examples/device/uac2_headset/src/main.c +++ b/examples/device/uac2_headset/src/main.c @@ -37,9 +37,9 @@ // List of supported sample rates const uint32_t sample_rates[] = {44100, 48000}; -uint32_t current_sample_rate = 44100; +uint32_t current_sample_rate = 44100; -#define N_SAMPLE_RATES TU_ARRAY_SIZE(sample_rates) +#define N_SAMPLE_RATES TU_ARRAY_SIZE(sample_rates) /* Blink pattern * - 25 ms : streaming data @@ -47,16 +47,14 @@ uint32_t current_sample_rate = 44100; * - 1000 ms : device mounted * - 2500 ms : device is suspended */ -enum -{ +enum { BLINK_STREAMING = 25, BLINK_NOT_MOUNTED = 250, BLINK_MOUNTED = 1000, BLINK_SUSPENDED = 2500, }; -enum -{ +enum { VOLUME_CTRL_0_DB = 0, VOLUME_CTRL_10_DB = 2560, VOLUME_CTRL_20_DB = 5120, @@ -75,8 +73,8 @@ 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 +uint8_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]; @@ -95,26 +93,21 @@ void audio_task(void); void audio_control_task(void); /*------------- MAIN -------------*/ -int main(void) -{ +int main(void) { board_init(); // init device stack on configured roothub port tusb_rhport_init_t dev_init = { - .role = TUSB_ROLE_DEVICE, - .speed = TUSB_SPEED_AUTO - }; + .role = TUSB_ROLE_DEVICE, + .speed = TUSB_SPEED_AUTO}; tusb_init(BOARD_TUD_RHPORT, &dev_init); - if (board_init_after_tusb) { - board_init_after_tusb(); - } + board_init_after_tusb(); TU_LOG1("Headset running\r\n"); - while (1) - { - tud_task(); // TinyUSB device task + while (1) { + tud_task();// TinyUSB device task audio_task(); audio_control_task(); led_blinking_task(); @@ -126,70 +119,234 @@ int main(void) //--------------------------------------------------------------------+ // Invoked when device is mounted -void tud_mount_cb(void) -{ +void tud_mount_cb(void) { blink_interval_ms = BLINK_MOUNTED; } // Invoked when device is unmounted -void tud_umount_cb(void) -{ +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; +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) -{ +void tud_resume_cb(void) { blink_interval_ms = tud_mounted() ? BLINK_MOUNTED : BLINK_NOT_MOUNTED; } +//--------------------------------------------------------------------+ +// Audio Callback Functions +//--------------------------------------------------------------------+ + +//--------------------------------------------------------------------+ +// UAC1 Helper Functions +//--------------------------------------------------------------------+ + +static bool audio10_set_req_ep(tusb_control_request_t const *p_request, uint8_t *pBuff) { + uint8_t ctrlSel = TU_U16_HIGH(p_request->wValue); + + switch (ctrlSel) { + case AUDIO10_EP_CTRL_SAMPLING_FREQ: + if (p_request->bRequest == AUDIO10_CS_REQ_SET_CUR) { + // Request uses 3 bytes + TU_VERIFY(p_request->wLength == 3); + + current_sample_rate = tu_unaligned_read32(pBuff) & 0x00FFFFFF; + + TU_LOG2("EP set current freq: %" PRIu32 "\r\n", current_sample_rate); + + return true; + } + break; + + // Unknown/Unsupported control + default: + TU_BREAKPOINT(); + return false; + } + + return false; +} + +static bool audio10_get_req_ep(uint8_t rhport, tusb_control_request_t const *p_request) { + uint8_t ctrlSel = TU_U16_HIGH(p_request->wValue); + + switch (ctrlSel) { + case AUDIO10_EP_CTRL_SAMPLING_FREQ: + if (p_request->bRequest == AUDIO10_CS_REQ_GET_CUR) { + TU_LOG2("EP get current freq\r\n"); + + uint8_t freq[3]; + freq[0] = (uint8_t) (current_sample_rate & 0xFF); + freq[1] = (uint8_t) ((current_sample_rate >> 8) & 0xFF); + freq[2] = (uint8_t) ((current_sample_rate >> 16) & 0xFF); + return tud_audio_buffer_and_schedule_control_xfer(rhport, p_request, freq, sizeof(freq)); + } + break; + + // Unknown/Unsupported control + default: + TU_BREAKPOINT(); + return false; + } + + return false; +} + +static bool audio10_set_req_entity(tusb_control_request_t const *p_request, uint8_t *pBuff) { + uint8_t channelNum = TU_U16_LOW(p_request->wValue); + uint8_t ctrlSel = TU_U16_HIGH(p_request->wValue); + uint8_t entityID = TU_U16_HIGH(p_request->wIndex); + + // If request is for our speaker feature unit + if (entityID == UAC1_ENTITY_SPK_FEATURE_UNIT) { + switch (ctrlSel) { + case AUDIO10_FU_CTRL_MUTE: + switch (p_request->bRequest) { + case AUDIO10_CS_REQ_SET_CUR: + // Only 1st form is supported + TU_VERIFY(p_request->wLength == 1); + + mute[channelNum] = pBuff[0]; + + TU_LOG2(" Set Mute: %d of channel: %u\r\n", mute[channelNum], channelNum); + return true; + + default: + return false; // not supported + } + + case AUDIO10_FU_CTRL_VOLUME: + switch (p_request->bRequest) { + case AUDIO10_CS_REQ_SET_CUR: + // Only 1st form is supported + TU_VERIFY(p_request->wLength == 2); + + volume[channelNum] = (int16_t)tu_unaligned_read16(pBuff) / 256; + + TU_LOG2(" Set Volume: %d dB of channel: %u\r\n", volume[channelNum], channelNum); + return true; + + default: + return false; // not supported + } + + // Unknown/Unsupported control + default: + TU_BREAKPOINT(); + return false; + } + } + + return false; +} + +static bool audio10_get_req_entity(uint8_t rhport, tusb_control_request_t const *p_request) { + uint8_t channelNum = TU_U16_LOW(p_request->wValue); + uint8_t ctrlSel = TU_U16_HIGH(p_request->wValue); + uint8_t entityID = TU_U16_HIGH(p_request->wIndex); + + // If request is for our speaker feature unit + if (entityID == UAC1_ENTITY_SPK_FEATURE_UNIT) { + switch (ctrlSel) { + case AUDIO10_FU_CTRL_MUTE: + // Audio control mute cur parameter block consists of only one byte - we thus can send it right away + // There does not exist a range parameter block for mute + TU_LOG2(" Get Mute of channel: %u\r\n", channelNum); + return tud_audio_buffer_and_schedule_control_xfer(rhport, p_request, &mute[channelNum], 1); + + case AUDIO10_FU_CTRL_VOLUME: + switch (p_request->bRequest) { + case AUDIO10_CS_REQ_GET_CUR: + TU_LOG2(" Get Volume of channel: %u\r\n", channelNum); + { + int16_t vol = (int16_t) volume[channelNum]; + vol = vol * 256; // convert to 1/256 dB units + return tud_audio_buffer_and_schedule_control_xfer(rhport, p_request, &vol, sizeof(vol)); + } + + case AUDIO10_CS_REQ_GET_MIN: + TU_LOG2(" Get Volume min of channel: %u\r\n", channelNum); + { + int16_t min = -90; // -90 dB + min = min * 256; // convert to 1/256 dB units + return tud_audio_buffer_and_schedule_control_xfer(rhport, p_request, &min, sizeof(min)); + } + + case AUDIO10_CS_REQ_GET_MAX: + TU_LOG2(" Get Volume max of channel: %u\r\n", channelNum); + { + int16_t max = 30; // +30 dB + max = max * 256; // convert to 1/256 dB units + return tud_audio_buffer_and_schedule_control_xfer(rhport, p_request, &max, sizeof(max)); + } + + case AUDIO10_CS_REQ_GET_RES: + TU_LOG2(" Get Volume res of channel: %u\r\n", channelNum); + { + int16_t res = 1; // 1 dB + res = res * 256; // convert to 1/256 dB units + return tud_audio_buffer_and_schedule_control_xfer(rhport, p_request, &res, sizeof(res)); + } + // Unknown/Unsupported control + default: + TU_BREAKPOINT(); + return false; + } + break; + + // Unknown/Unsupported control + default: + TU_BREAKPOINT(); + return false; + } + } + + return false; +} + +//--------------------------------------------------------------------+ +// UAC2 Helper Functions +//--------------------------------------------------------------------+ + +#if TUD_OPT_HIGH_SPEED + // Helper for clock get requests -static bool tud_audio_clock_get_request(uint8_t rhport, audio_control_request_t const *request) -{ +static bool audio20_clock_get_request(uint8_t rhport, audio20_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) - { + if (request->bControlSelector == AUDIO20_CS_CTRL_SAM_FREQ) { + if (request->bRequest == AUDIO20_CS_REQ_CUR) { TU_LOG1("Clock get current freq %" PRIu32 "\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) - }; + audio20_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 == AUDIO20_CS_REQ_RANGE) { + audio20_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++) - { + 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); + 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)); + 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 }; + } else if (request->bControlSelector == AUDIO20_CS_CTRL_CLK_VALID && + request->bRequest == AUDIO20_CS_REQ_CUR) { + audio20_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)); + 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); @@ -197,25 +354,21 @@ static bool tud_audio_clock_get_request(uint8_t rhport, audio_control_request_t } // 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; +static bool audio20_clock_set_request(uint8_t rhport, audio20_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); + TU_VERIFY(request->bRequest == AUDIO20_CS_REQ_CUR); - if (request->bControlSelector == AUDIO_CS_CTRL_SAM_FREQ) - { - TU_VERIFY(request->wLength == sizeof(audio_control_cur_4_t)); + if (request->bControlSelector == AUDIO20_CS_CTRL_SAM_FREQ) { + TU_VERIFY(request->wLength == sizeof(audio20_control_cur_4_t)); - current_sample_rate = (uint32_t) ((audio_control_cur_4_t const *)buf)->bCur; + current_sample_rate = (uint32_t) ((audio20_control_cur_4_t const *) buf)->bCur; TU_LOG1("Clock set current freq: %" PRIu32 "\r\n", current_sample_rate); return true; - } - else - { + } else { TU_LOG1("Clock set request not supported, entity = %u, selector = %u, request = %u\r\n", request->bEntityID, request->bControlSelector, request->bRequest); return false; @@ -223,33 +376,25 @@ static bool tud_audio_clock_set_request(uint8_t rhport, audio_control_request_t } // Helper for feature unit get requests -static bool tud_audio_feature_unit_get_request(uint8_t rhport, audio_control_request_t const *request) -{ +static bool audio20_feature_unit_get_request(uint8_t rhport, audio20_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] }; + if (request->bControlSelector == AUDIO20_FU_CTRL_MUTE && request->bRequest == AUDIO20_CS_REQ_CUR) { + audio20_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 (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) } - }; + return tud_audio_buffer_and_schedule_control_xfer(rhport, (tusb_control_request_t const *) request, &mute1, sizeof(mute1)); + } else if (request->bControlSelector == AUDIO20_FU_CTRL_VOLUME) { + if (request->bRequest == AUDIO20_CS_REQ_RANGE) { + audio20_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]) }; + return tud_audio_buffer_and_schedule_control_xfer(rhport, (tusb_control_request_t const *) request, &range_vol, sizeof(range_vol)); + } else if (request->bRequest == AUDIO20_CS_REQ_CUR) { + audio20_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)); + 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", @@ -259,179 +404,199 @@ static bool tud_audio_feature_unit_get_request(uint8_t rhport, audio_control_req } // 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; +static bool audio20_feature_unit_set_request(uint8_t rhport, audio20_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); + TU_VERIFY(request->bRequest == AUDIO20_CS_REQ_CUR); - if (request->bControlSelector == AUDIO_FU_CTRL_MUTE) - { - TU_VERIFY(request->wLength == sizeof(audio_control_cur_1_t)); + if (request->bControlSelector == AUDIO20_FU_CTRL_MUTE) { + TU_VERIFY(request->wLength == sizeof(audio20_control_cur_1_t)); - mute[request->bChannelNumber] = ((audio_control_cur_1_t const *)buf)->bCur; + mute[request->bChannelNumber] = ((audio20_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)); + } else if (request->bControlSelector == AUDIO20_FU_CTRL_VOLUME) { + TU_VERIFY(request->wLength == sizeof(audio20_control_cur_2_t)); - volume[request->bChannelNumber] = ((audio_control_cur_2_t const *)buf)->bCur; + volume[request->bChannelNumber] = ((audio20_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 - { + } 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; +static bool audio20_get_req_entity(uint8_t rhport, tusb_control_request_t const *p_request) { + audio20_control_request_t const *request = (audio20_control_request_t const *) p_request; if (request->bEntityID == UAC2_ENTITY_CLOCK) - return tud_audio_clock_get_request(rhport, request); + return audio20_clock_get_request(rhport, request); if (request->bEntityID == UAC2_ENTITY_SPK_FEATURE_UNIT) - return tud_audio_feature_unit_get_request(rhport, request); - else - { + return audio20_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; +static bool audio20_set_req_entity(uint8_t rhport, tusb_control_request_t const *p_request, uint8_t *buf) { + audio20_control_request_t const *request = (audio20_control_request_t const *) p_request; if (request->bEntityID == UAC2_ENTITY_SPK_FEATURE_UNIT) - return tud_audio_feature_unit_set_request(rhport, request, buf); + return audio20_feature_unit_set_request(rhport, request, buf); if (request->bEntityID == UAC2_ENTITY_CLOCK) - return tud_audio_clock_set_request(rhport, request, buf); + return audio20_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; +#endif // TUD_OPT_HIGH_SPEED + +// Invoked when audio class specific set request received for an EP +bool tud_audio_set_req_ep_cb(uint8_t rhport, tusb_control_request_t const *p_request, uint8_t *pBuff) { + (void) rhport; + (void) pBuff; + + if (tud_audio_version() == 1) { + return audio10_set_req_ep(p_request, pBuff); + } else if (tud_audio_version() == 2) { + // We do not support any requests here + } + + return false;// Yet not implemented +} + +// Invoked when audio class specific get request received for an EP +bool tud_audio_get_req_ep_cb(uint8_t rhport, tusb_control_request_t const *p_request) { + (void) rhport; + + if (tud_audio_version() == 1) { + return audio10_get_req_ep(rhport, p_request); + } else if (tud_audio_version() == 2) { + // We do not support any requests here + } + + return false;// Yet not implemented +} + +// 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) { + (void) rhport; + + if (tud_audio_version() == 1) { + return audio10_get_req_entity(rhport, p_request); +#if TUD_OPT_HIGH_SPEED + } else if (tud_audio_version() == 2) { + return audio20_get_req_entity(rhport, p_request); +#endif + } + + 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) { + (void) rhport; + + if (tud_audio_version() == 1) { + return audio10_set_req_entity(p_request, buf); +#if TUD_OPT_HIGH_SPEED + } else if (tud_audio_version() == 2) { + return audio20_set_req_entity(rhport, p_request, buf); +#endif + } + + 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) - blink_interval_ms = BLINK_MOUNTED; + if (ITF_NUM_AUDIO_STREAMING_SPK == 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; +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) - blink_interval_ms = BLINK_STREAMING; + if (ITF_NUM_AUDIO_STREAMING_SPK == itf && alt != 0) { + 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]; + 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); - 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; -} - //--------------------------------------------------------------------+ // AUDIO Task //--------------------------------------------------------------------+ -void audio_task(void) -{ +// This task simulates an audio transfer callback, one frame is sent/received every 1ms. +// In a real application, this would be replaced with actual I2S send/receive callback. +void audio_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; // When new data arrived, copy data from speaker buffer, to microphone buffer // and send it over // Only support speaker & headphone both have the same resolution // If one is 16bit another is 24bit be care of LOUD noise ! - if (spk_data_size) - { - if (current_resolution == 16) - { - int16_t *src = (int16_t*)spk_buf; - int16_t *limit = (int16_t*)spk_buf + spk_data_size / 2; - int16_t *dst = (int16_t*)mic_buf; - while (src < limit) - { + spk_data_size = tud_audio_read(spk_buf, sizeof(spk_buf)); + if (spk_data_size) { + if (current_resolution == 16) { + int16_t *src = (int16_t *) spk_buf; + int16_t *limit = (int16_t *) spk_buf + spk_data_size / 2; + int16_t *dst = (int16_t *) mic_buf; + while (src < limit) { // Combine two channels into one int32_t left = *src++; int32_t right = *src++; *dst++ = (int16_t) ((left >> 1) + (right >> 1)); } - tud_audio_write((uint8_t *)mic_buf, (uint16_t) (spk_data_size / 2)); + tud_audio_write((uint8_t *) mic_buf, (uint16_t) (spk_data_size / 2)); spk_data_size = 0; - } - else if (current_resolution == 24) - { + } else if (current_resolution == 24) { int32_t *src = spk_buf; int32_t *limit = spk_buf + spk_data_size / 4; int32_t *dst = mic_buf; - while (src < limit) - { + while (src < limit) { // Combine two channels into one int32_t left = *src++; int32_t right = *src++; *dst++ = (int32_t) ((uint32_t) ((left >> 1) + (right >> 1)) & 0xffffff00ul); } - tud_audio_write((uint8_t *)mic_buf, (uint16_t) (spk_data_size / 2)); + tud_audio_write((uint8_t *) mic_buf, (uint16_t) (spk_data_size / 2)); spk_data_size = 0; } } } -void audio_control_task(void) -{ +void audio_control_task(void) { // Press on-board button to control volume // Open host volume control, volume should switch between 10% and 100% @@ -440,28 +605,30 @@ void audio_control_task(void) static uint32_t start_ms = 0; static uint32_t btn_prev = 0; - if ( board_millis() - start_ms < interval_ms) return; // not enough time + if (board_millis() - start_ms < interval_ms) return;// not enough time start_ms += interval_ms; uint32_t btn = board_button_read(); - if (!btn_prev && btn) - { + // Even UAC1 spec have status interrupt support like UAC2, most host do not support it + // So you have to either use UAC2 or use old day HID volume control + TU_VERIFY((tud_audio_version() == 1),); + + if (!btn_prev && btn) { // Adjust volume between 0dB (100%) and -30dB (10%) - for (int i = 0; i < CFG_TUD_AUDIO_FUNC_1_N_CHANNELS_RX + 1; i++) - { + for (int i = 0; i < CFG_TUD_AUDIO_FUNC_1_N_CHANNELS_RX + 1; i++) { volume[i] = volume[i] == 0 ? -VOLUME_CTRL_30_DB : 0; } // 6.1 Interrupt Data Message - const audio_interrupt_data_t data = { - .bInfo = 0, // Class-specific interrupt, originated from an interface - .bAttribute = AUDIO_CS_REQ_CUR, // Caused by current settings - .wValue_cn_or_mcn = 0, // CH0: master volume - .wValue_cs = AUDIO_FU_CTRL_VOLUME, // Volume change - .wIndex_ep_or_int = 0, // From the interface itself - .wIndex_entity_id = UAC2_ENTITY_SPK_FEATURE_UNIT, // From feature unit - }; + const audio_interrupt_data_t data = {.v2 = { + .bInfo = 0, // Class-specific interrupt, originated from an interface + .bAttribute = AUDIO20_CS_REQ_CUR, // Caused by current settings + .wValue_cn_or_mcn = 0, // CH0: master volume + .wValue_cs = AUDIO20_FU_CTRL_VOLUME, // Volume change + .wIndex_ep_or_int = 0, // From the interface itself + .wIndex_entity_id = UAC2_ENTITY_SPK_FEATURE_UNIT,// From feature unit + }}; tud_audio_int_write(&data); } @@ -472,8 +639,7 @@ void audio_control_task(void) //--------------------------------------------------------------------+ // BLINKING TASK //--------------------------------------------------------------------+ -void led_blinking_task(void) -{ +void led_blinking_task(void) { static uint32_t start_ms = 0; static bool led_state = false; |