diff options
Diffstat (limited to 'examples/device/uac2_headset/src/main.c')
| -rw-r--r-- | examples/device/uac2_headset/src/main.c | 59 |
1 files changed, 50 insertions, 9 deletions
diff --git a/examples/device/uac2_headset/src/main.c b/examples/device/uac2_headset/src/main.c index 19a3f7bae..0ea6e7025 100644 --- a/examples/device/uac2_headset/src/main.c +++ b/examples/device/uac2_headset/src/main.c @@ -26,7 +26,7 @@ #include <stdio.h> #include <string.h> -#include "bsp/board.h" +#include "bsp/board_api.h" #include "tusb.h" #include "usb_descriptors.h" @@ -35,11 +35,7 @@ //--------------------------------------------------------------------+ // 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 +const uint32_t sample_rates[] = {44100, 48000}; uint32_t current_sample_rate = 44100; @@ -96,6 +92,7 @@ uint8_t current_resolution; void led_blinking_task(void); void audio_task(void); +void audio_control_task(void); /*------------- MAIN -------------*/ int main(void) @@ -105,12 +102,17 @@ int main(void) // init device stack on configured roothub port tud_init(BOARD_TUD_RHPORT); + if (board_init_after_tusb) { + board_init_after_tusb(); + } + TU_LOG1("Headset running\r\n"); while (1) { tud_task(); // TinyUSB device task audio_task(); + audio_control_task(); led_blinking_task(); } } @@ -143,7 +145,7 @@ void tud_suspend_cb(bool remote_wakeup_en) // Invoked when usb bus is resumed void tud_resume_cb(void) { - blink_interval_ms = BLINK_MOUNTED; + blink_interval_ms = tud_mounted() ? BLINK_MOUNTED : BLINK_NOT_MOUNTED; } // Helper for clock get requests @@ -155,7 +157,7 @@ static bool tud_audio_clock_get_request(uint8_t rhport, audio_control_request_t { if (request->bRequest == AUDIO_CS_REQ_CUR) { - TU_LOG1("Clock get current freq %lu\r\n", current_sample_rate); + 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)); @@ -204,7 +206,7 @@ static bool tud_audio_clock_set_request(uint8_t rhport, audio_control_request_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); + TU_LOG1("Clock set current freq: %" PRIu32 "\r\n", current_sample_rate); return true; } @@ -424,6 +426,45 @@ void audio_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% + + // Poll every 50ms + const uint32_t interval_ms = 50; + static uint32_t start_ms = 0; + static uint32_t btn_prev = 0; + + 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) + { + // Adjust volume between 0dB (100%) and -30dB (10%) + 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 + }; + + tud_audio_int_write(&data); + } + + btn_prev = btn; +} + //--------------------------------------------------------------------+ // BLINKING TASK //--------------------------------------------------------------------+ |