Diff: sample_programs/sample_12_usb_func_audio_2.cpp

Revision:

0:b4c1e32627f2

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/sample_programs/sample_12_usb_func_audio_2.cpp	Mon Oct 12 02:25:49 2020 +0000
@@ -0,0 +1,103 @@
+/*******************************************************************************
+* DISCLAIMER
+* This software is supplied by Renesas Electronics Corporation and is only
+* intended for use with Renesas products. No other uses are authorized. This
+* software is owned by Renesas Electronics Corporation and is protected under
+* all applicable laws, including copyright laws.
+* THIS SOFTWARE IS PROVIDED "AS IS" AND RENESAS MAKES NO WARRANTIES REGARDING
+* THIS SOFTWARE, WHETHER EXPRESS, IMPLIED OR STATUTORY, INCLUDING BUT NOT
+* LIMITED TO WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE
+* AND NON-INFRINGEMENT. ALL SUCH WARRANTIES ARE EXPRESSLY DISCLAIMED.
+* TO THE MAXIMUM EXTENT PERMITTED NOT PROHIBITED BY LAW, NEITHER RENESAS
+* ELECTRONICS CORPORATION NOR ANY OF ITS AFFILIATED COMPANIES SHALL BE LIABLE
+* FOR ANY DIRECT, INDIRECT, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES FOR
+* ANY REASON RELATED TO THIS SOFTWARE, EVEN IF RENESAS OR ITS AFFILIATES HAVE
+* BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
+* Renesas reserves the right, without notice, to make changes to this software
+* and to discontinue the availability of this software. By using this software,
+* you agree to the additional terms and conditions found by accessing the
+* following link:
+* http://www.renesas.com/disclaimer
+*
+* Copyright (C) 2019 Renesas Electronics Corporation. All rights reserved.
+*******************************************************************************/
+#include "sample_select.h"
+
+#if (SAMPLE_PROGRAM_NO == 12)
+// SAMPLE_PROGRAM_NO 12 : USBAudio and SSIF sample
+// Sound from PC will be output to SSIF. (speaker)
+// Sound from SSIF will be input to the PC. (microphone)
+// [Attention!] Delete the "OVERRIDE_CONSOLE_USBSERIAL" macro in "mbed_app.json" file if it is set.
+
+#if defined(TARGET_SEMB1402) || defined(TARGET_RZ_A2M_SBEV)
+#error "Audio is not supported."
+#endif
+
+#include "mbed.h"
+#include "USBAudio.h"
+#include "AUDIO_GRBoard.h"
+
+#define AUDIO_OUT_BUFF_NUM     (8)
+#define AUDIO_IN_BUFF_NUM      (8)
+#define AUDIO_BUFF_SIZE        (4096)
+AUDIO_GRBoard i2s_audio(0x80, AUDIO_OUT_BUFF_NUM - 1, AUDIO_IN_BUFF_NUM);
+
+//32 bytes aligned! No cache memory
+static uint8_t audio_out_buff[AUDIO_OUT_BUFF_NUM][AUDIO_BUFF_SIZE] __attribute((section("NC_BSS"),aligned(32)));
+static uint8_t audio_in_buff[AUDIO_IN_BUFF_NUM][AUDIO_BUFF_SIZE] __attribute((section("NC_BSS"),aligned(32)));
+
+Semaphore   mic_in_sem(0);
+
+static void callback_audio_in(void * p_data, int32_t result, void * p_app_data) {
+    mic_in_sem.release();
+}
+
+void mic_task(USBAudio * p_usb_audio) {
+    rbsp_data_conf_t audio_in_cb = {&callback_audio_in, NULL};
+    uint8_t * p_buf;
+    int audio_in_idx = 0;
+
+    // Read buffer setting
+    for (int i = 0; i < AUDIO_IN_BUFF_NUM; i++) {
+        i2s_audio.read(audio_in_buff[i], AUDIO_BUFF_SIZE, &audio_in_cb);
+    }
+
+    while (1) {
+        mic_in_sem.acquire();
+        p_buf = audio_in_buff[audio_in_idx++];
+        if (audio_in_idx >= AUDIO_IN_BUFF_NUM) {
+            audio_in_idx = 0;
+        }
+        if (i2s_audio.read(p_buf, AUDIO_BUFF_SIZE, &audio_in_cb) < 0) {
+            memset(p_buf, 0, AUDIO_BUFF_SIZE);
+        }
+        p_usb_audio->write(p_buf, AUDIO_BUFF_SIZE);
+    }
+}
+
+int main() {
+    USBAudio usb_audio(true, 44100, 2, 44100, 2);
+    rbsp_data_conf_t audio_out_cb = {NULL, NULL};
+    uint8_t * p_buf;
+    int audio_out_idx = 0;
+
+    i2s_audio.power();                // For GR-PEACH and GR-LYCHEE
+    i2s_audio.outputVolume(0.5, 0.5); // For GR-PEACH and GR-LYCHEE
+    i2s_audio.micVolume(0.7);         // For GR-PEACH and GR-LYCHEE
+
+    Thread micTask;
+    micTask.start(callback(mic_task, &usb_audio));
+
+    while (1) {
+        p_buf = audio_out_buff[audio_out_idx++];
+        if (audio_out_idx >= AUDIO_OUT_BUFF_NUM) {
+            audio_out_idx = 0;
+        }
+        if (!usb_audio.read(p_buf, AUDIO_BUFF_SIZE)) {
+            memset(p_buf, 0, AUDIO_BUFF_SIZE);
+        }
+        i2s_audio.write(p_buf, AUDIO_BUFF_SIZE, &audio_out_cb);
+    }
+}
+
+#endif