summaryrefslogtreecommitdiffstats
path: root/tinyusb/examples/device/audio_4_channel_mic/src/main.c
diff options
context:
space:
mode:
Diffstat (limited to 'tinyusb/examples/device/audio_4_channel_mic/src/main.c')
m---------tinyusb0
-rwxr-xr-xtinyusb/examples/device/audio_4_channel_mic/src/main.c458
2 files changed, 0 insertions, 458 deletions
diff --git a/tinyusb b/tinyusb
new file mode 160000
+Subproject f8288be03f28ad7b944e6925f49422dfa39202c
diff --git a/tinyusb/examples/device/audio_4_channel_mic/src/main.c b/tinyusb/examples/device/audio_4_channel_mic/src/main.c
deleted file mode 100755
index 983b87e5..00000000
--- a/tinyusb/examples/device/audio_4_channel_mic/src/main.c
+++ /dev/null
@@ -1,458 +0,0 @@
-/*
- * The MIT License (MIT)
- *
- * Copyright (c) 2020 Reinhard Panhuber
- *
- * 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.
- *
- */
-
-/* plot_audio_samples.py requires following modules:
- * $ sudo apt install libportaudio
- * $ pip3 install sounddevice matplotlib
- *
- * Then run
- * $ python3 plot_audio_samples.py
- */
-
-#include <stdlib.h>
-#include <stdio.h>
-#include <string.h>
-
-#include "bsp/board.h"
-#include "tusb.h"
-
-//--------------------------------------------------------------------+
-// MACRO CONSTANT TYPEDEF PROTYPES
-//--------------------------------------------------------------------+
-
-#ifndef AUDIO_SAMPLE_RATE
-#define AUDIO_SAMPLE_RATE 48000
-#endif
-
-/* Blink pattern
- * - 250 ms : device not mounted
- * - 1000 ms : device mounted
- * - 2500 ms : device is suspended
- */
-enum {
- BLINK_NOT_MOUNTED = 250,
- BLINK_MOUNTED = 1000,
- BLINK_SUSPENDED = 2500,
-};
-
-static uint32_t blink_interval_ms = BLINK_NOT_MOUNTED;
-
-// Audio controls
-// Current states
-bool mute[CFG_TUD_AUDIO_FUNC_1_N_CHANNELS_TX + 1]; // +1 for master channel 0
-uint16_t volume[CFG_TUD_AUDIO_FUNC_1_N_CHANNELS_TX + 1]; // +1 for master channel 0
-uint32_t sampFreq;
-uint8_t clkValid;
-
-// Range states
-audio_control_range_2_n_t(1) volumeRng[CFG_TUD_AUDIO_FUNC_1_N_CHANNELS_TX+1]; // Volume range state
-audio_control_range_4_n_t(1) sampleFreqRng; // Sample frequency range state
-
-// Audio test data
-uint16_t i2s_dummy_buffer[CFG_TUD_AUDIO_FUNC_1_N_TX_SUPP_SW_FIFO][CFG_TUD_AUDIO_FUNC_1_TX_SUPP_SW_FIFO_SZ/2]; // Ensure half word aligned
-
-void led_blinking_task(void);
-void audio_task(void);
-
-/*------------- MAIN -------------*/
-int main(void)
-{
- board_init();
-
- tusb_init();
-
- // Init values
- sampFreq = AUDIO_SAMPLE_RATE;
- clkValid = 1;
-
- sampleFreqRng.wNumSubRanges = 1;
- sampleFreqRng.subrange[0].bMin = AUDIO_SAMPLE_RATE;
- sampleFreqRng.subrange[0].bMax = AUDIO_SAMPLE_RATE;
- sampleFreqRng.subrange[0].bRes = 0;
-
- while (1)
- {
- tud_task(); // tinyusb device task
- led_blinking_task();
- audio_task();
- }
-
-
- 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;
-}
-
-//--------------------------------------------------------------------+
-// AUDIO Task
-//--------------------------------------------------------------------+
-
-void audio_task(void)
-{
- // Yet to be filled - e.g. put meas data into TX FIFOs etc.
- asm("nop");
-}
-
-//--------------------------------------------------------------------+
-// Application Callback API Implementations
-//--------------------------------------------------------------------+
-
-// 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;
-
- // We do not support any set range requests here, only current value requests
- TU_VERIFY(p_request->bRequest == AUDIO_CS_REQ_CUR);
-
- // Page 91 in UAC2 specification
- uint8_t channelNum = TU_U16_LOW(p_request->wValue);
- uint8_t ctrlSel = TU_U16_HIGH(p_request->wValue);
- uint8_t ep = TU_U16_LOW(p_request->wIndex);
-
- (void) channelNum; (void) ctrlSel; (void) ep;
-
- return false; // Yet not implemented
-}
-
-// Invoked when audio class specific set request received for an interface
-bool tud_audio_set_req_itf_cb(uint8_t rhport, tusb_control_request_t const * p_request, uint8_t *pBuff)
-{
- (void) rhport;
- (void) pBuff;
-
- // We do not support any set range requests here, only current value requests
- TU_VERIFY(p_request->bRequest == AUDIO_CS_REQ_CUR);
-
- // Page 91 in UAC2 specification
- uint8_t channelNum = TU_U16_LOW(p_request->wValue);
- uint8_t ctrlSel = TU_U16_HIGH(p_request->wValue);
- uint8_t itf = TU_U16_LOW(p_request->wIndex);
-
- (void) channelNum; (void) ctrlSel; (void) itf;
-
- return false; // Yet not implemented
-}
-
-// 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 *pBuff)
-{
- (void) rhport;
-
- // Page 91 in UAC2 specification
- uint8_t channelNum = TU_U16_LOW(p_request->wValue);
- uint8_t ctrlSel = TU_U16_HIGH(p_request->wValue);
- uint8_t itf = TU_U16_LOW(p_request->wIndex);
- uint8_t entityID = TU_U16_HIGH(p_request->wIndex);
-
- (void) itf;
-
- // We do not support any set range requests here, only current value requests
- TU_VERIFY(p_request->bRequest == AUDIO_CS_REQ_CUR);
-
- // If request is for our feature unit
- if ( entityID == 2 )
- {
- switch ( ctrlSel )
- {
- case AUDIO_FU_CTRL_MUTE:
- // Request uses format layout 1
- TU_VERIFY(p_request->wLength == sizeof(audio_control_cur_1_t));
-
- mute[channelNum] = ((audio_control_cur_1_t*) pBuff)->bCur;
-
- TU_LOG2(" Set Mute: %d of channel: %u\r\n", mute[channelNum], channelNum);
- return true;
-
- case AUDIO_FU_CTRL_VOLUME:
- // Request uses format layout 2
- TU_VERIFY(p_request->wLength == sizeof(audio_control_cur_2_t));
-
- volume[channelNum] = ((audio_control_cur_2_t*) pBuff)->bCur;
-
- TU_LOG2(" Set Volume: %d dB of channel: %u\r\n", volume[channelNum], channelNum);
- return true;
-
- // Unknown/Unsupported control
- default:
- TU_BREAKPOINT();
- return false;
- }
- }
- 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;
-
- // Page 91 in UAC2 specification
- uint8_t channelNum = TU_U16_LOW(p_request->wValue);
- uint8_t ctrlSel = TU_U16_HIGH(p_request->wValue);
- uint8_t ep = TU_U16_LOW(p_request->wIndex);
-
- (void) channelNum; (void) ctrlSel; (void) ep;
-
- // return tud_control_xfer(rhport, p_request, &tmp, 1);
-
- return false; // Yet not implemented
-}
-
-// Invoked when audio class specific get request received for an interface
-bool tud_audio_get_req_itf_cb(uint8_t rhport, tusb_control_request_t const * p_request)
-{
- (void) rhport;
-
- // Page 91 in UAC2 specification
- uint8_t channelNum = TU_U16_LOW(p_request->wValue);
- uint8_t ctrlSel = TU_U16_HIGH(p_request->wValue);
- uint8_t itf = TU_U16_LOW(p_request->wIndex);
-
- (void) channelNum; (void) ctrlSel; (void) itf;
-
- 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;
-
- // Page 91 in UAC2 specification
- uint8_t channelNum = TU_U16_LOW(p_request->wValue);
- uint8_t ctrlSel = TU_U16_HIGH(p_request->wValue);
- // uint8_t itf = TU_U16_LOW(p_request->wIndex); // Since we have only one audio function implemented, we do not need the itf value
- uint8_t entityID = TU_U16_HIGH(p_request->wIndex);
-
- // Input terminal (Microphone input)
- if (entityID == 1)
- {
- switch ( ctrlSel )
- {
- case AUDIO_TE_CTRL_CONNECTOR:
- {
- // The terminal connector control only has a get request with only the CUR attribute.
- audio_desc_channel_cluster_t ret;
-
- // Those are dummy values for now
- ret.bNrChannels = 1;
- ret.bmChannelConfig = 0;
- ret.iChannelNames = 0;
-
- TU_LOG2(" Get terminal connector\r\n");
-
- return tud_audio_buffer_and_schedule_control_xfer(rhport, p_request, (void*) &ret, sizeof(ret));
- }
- break;
-
- // Unknown/Unsupported control selector
- default:
- TU_BREAKPOINT();
- return false;
- }
- }
-
- // Feature unit
- if (entityID == 2)
- {
- switch ( ctrlSel )
- {
- case AUDIO_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_control_xfer(rhport, p_request, &mute[channelNum], 1);
-
- case AUDIO_FU_CTRL_VOLUME:
- switch ( p_request->bRequest )
- {
- case AUDIO_CS_REQ_CUR:
- TU_LOG2(" Get Volume of channel: %u\r\n", channelNum);
- return tud_control_xfer(rhport, p_request, &volume[channelNum], sizeof(volume[channelNum]));
-
- case AUDIO_CS_REQ_RANGE:
- TU_LOG2(" Get Volume range of channel: %u\r\n", channelNum);
-
- // Copy values - only for testing - better is version below
- audio_control_range_2_n_t(1)
- ret;
-
- ret.wNumSubRanges = 1;
- ret.subrange[0].bMin = -90; // -90 dB
- ret.subrange[0].bMax = 90; // +90 dB
- ret.subrange[0].bRes = 1; // 1 dB steps
-
- return tud_audio_buffer_and_schedule_control_xfer(rhport, p_request, (void*) &ret, sizeof(ret));
-
- // Unknown/Unsupported control
- default:
- TU_BREAKPOINT();
- return false;
- }
- break;
-
- // Unknown/Unsupported control
- default:
- TU_BREAKPOINT();
- return false;
- }
- }
-
- // Clock Source unit
- if ( entityID == 4 )
- {
- switch ( ctrlSel )
- {
- case AUDIO_CS_CTRL_SAM_FREQ:
- // channelNum is always zero in this case
- switch ( p_request->bRequest )
- {
- case AUDIO_CS_REQ_CUR:
- TU_LOG2(" Get Sample Freq.\r\n");
- return tud_control_xfer(rhport, p_request, &sampFreq, sizeof(sampFreq));
-
- case AUDIO_CS_REQ_RANGE:
- TU_LOG2(" Get Sample Freq. range\r\n");
- return tud_control_xfer(rhport, p_request, &sampleFreqRng, sizeof(sampleFreqRng));
-
- // Unknown/Unsupported control
- default:
- TU_BREAKPOINT();
- return false;
- }
- break;
-
- case AUDIO_CS_CTRL_CLK_VALID:
- // Only cur attribute exists for this request
- TU_LOG2(" Get Sample Freq. valid\r\n");
- return tud_control_xfer(rhport, p_request, &clkValid, sizeof(clkValid));
-
- // Unknown/Unsupported control
- default:
- TU_BREAKPOINT();
- return false;
- }
- }
-
- TU_LOG2(" Unsupported entity: %d\r\n", entityID);
- return false; // Yet not implemented
-}
-
-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;
-
- for (uint8_t cnt=0; cnt < CFG_TUD_AUDIO_FUNC_1_N_TX_SUPP_SW_FIFO; cnt++)
- {
- tud_audio_write_support_ff(cnt, i2s_dummy_buffer[cnt], AUDIO_SAMPLE_RATE/1000 * CFG_TUD_AUDIO_FUNC_1_N_BYTES_PER_SAMPLE_TX * CFG_TUD_AUDIO_FUNC_1_CHANNEL_PER_FIFO_TX);
- }
-
- return true;
-}
-
-bool tud_audio_tx_done_post_load_cb(uint8_t rhport, uint16_t n_bytes_copied, uint8_t itf, uint8_t ep_in, uint8_t cur_alt_setting)
-{
- (void) rhport;
- (void) n_bytes_copied;
- (void) itf;
- (void) ep_in;
- (void) cur_alt_setting;
-
- uint16_t dataVal;
-
- // Generate dummy data
- for (uint16_t cnt = 0; cnt < CFG_TUD_AUDIO_FUNC_1_N_TX_SUPP_SW_FIFO; cnt++)
- {
- uint16_t * p_buff = i2s_dummy_buffer[cnt]; // 2 bytes per sample
- dataVal = 1;
- for (uint16_t cnt2 = 0; cnt2 < AUDIO_SAMPLE_RATE/1000; cnt2++)
- {
- for (uint8_t cnt3 = 0; cnt3 < CFG_TUD_AUDIO_FUNC_1_CHANNEL_PER_FIFO_TX; cnt3++)
- {
- *p_buff++ = dataVal;
- }
- dataVal++;
- }
- }
- return true;
-}
-
-bool tud_audio_set_itf_close_EP_cb(uint8_t rhport, tusb_control_request_t const * p_request)
-{
- (void) rhport;
- (void) p_request;
-
- 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; // not enough time
- start_ms += blink_interval_ms;
-
- board_led_write(led_state);
- led_state = 1 - led_state; // toggle
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-08-22 14:51:19 +0000