From 7e749a8a7bc649cc25aa150455c7129797ef9fec Mon Sep 17 00:00:00 2001
From: sakimisu <1203593632@qq.com>
Date: Fri, 2 Dec 2022 21:10:18 +0800
Subject: [PATCH] fix audio first start read

---
 .../audio_v1_mic_speaker_multichan_template.c | 20 +++++++++----------
 .../audio_v2_mic_speaker_multichan_template.c |  8 ++++----
 demo/audio_v2_speaker_multichan_template.c    | 11 +++++-----
 3 files changed, 20 insertions(+), 19 deletions(-)

diff --git a/demo/audio_v1_mic_speaker_multichan_template.c b/demo/audio_v1_mic_speaker_multichan_template.c
index b5152a3f..59c3fa6e 100644
--- a/demo/audio_v1_mic_speaker_multichan_template.c
+++ b/demo/audio_v1_mic_speaker_multichan_template.c
@@ -130,6 +130,9 @@ const uint8_t audio_descriptor[] = {
     0x00
 };
 
+USB_NOCACHE_RAM_SECTION USB_MEM_ALIGNX uint8_t write_buffer[2048];
+USB_NOCACHE_RAM_SECTION USB_MEM_ALIGNX uint8_t out_buffer[AUDIO_OUT_PACKET];
+
 volatile bool tx_flag = 0;
 volatile bool rx_flag = 0;
 
@@ -137,6 +140,8 @@ void usbd_audio_open(uint8_t intf)
 {
     if (intf == 1) {
         rx_flag = 1;
+        /* setup first out ep read transfer */
+        usbd_ep_start_read(AUDIO_OUT_EP, out_buffer, AUDIO_OUT_PACKET);
         printf("OPEN1\r\n");
     } else {
         tx_flag = 1;
@@ -160,15 +165,10 @@ void usbd_audio_close(uint8_t intf)
 #define AUDIO_OUT_EP_MPS 64
 #endif
 
-USB_NOCACHE_RAM_SECTION USB_MEM_ALIGNX uint8_t write_buffer[2048];
-USB_NOCACHE_RAM_SECTION USB_MEM_ALIGNX uint8_t out_buffer[AUDIO_OUT_PACKET];
-
 volatile bool ep_tx_busy_flag = false;
 
 void usbd_configure_done_callback(void)
 {
-    /* setup first out ep read transfer */
-    usbd_ep_start_read(AUDIO_OUT_EP, out_buffer, AUDIO_OUT_PACKET);
 }
 
 void usbd_audio_out_callback(uint8_t ep, uint32_t nbytes)
@@ -216,11 +216,11 @@ void audio_test()
 {
     while (1) {
         if (tx_flag) {
-//            memset(write_buffer, 'a', 2048);
-//            ep_tx_busy_flag = true;
-//            usbd_ep_start_write(AUDIO_IN_EP, write_buffer, 2048);
-//            while (ep_tx_busy_flag) {
-//            }
+            //            memset(write_buffer, 'a', 2048);
+            //            ep_tx_busy_flag = true;
+            //            usbd_ep_start_write(AUDIO_IN_EP, write_buffer, 2048);
+            //            while (ep_tx_busy_flag) {
+            //            }
         }
     }
 }
diff --git a/demo/audio_v2_mic_speaker_multichan_template.c b/demo/audio_v2_mic_speaker_multichan_template.c
index 805a9632..d92752a6 100644
--- a/demo/audio_v2_mic_speaker_multichan_template.c
+++ b/demo/audio_v2_mic_speaker_multichan_template.c
@@ -192,6 +192,8 @@ uint8_t audio_descriptor[] = {
     0x00
 };
 
+USB_NOCACHE_RAM_SECTION USB_MEM_ALIGNX uint8_t out_buffer[AUDIO_OUT_EP_MPS];
+
 volatile bool tx_flag = 0;
 volatile bool rx_flag = 0;
 
@@ -199,6 +201,8 @@ void usbd_audio_open(uint8_t intf)
 {
     if (intf == 1) {
         rx_flag = 1;
+        /* setup first out ep read transfer */
+        usbd_ep_start_read(AUDIO_OUT_EP, out_buffer, AUDIO_OUT_EP_MPS);
         USB_LOG_RAW("OPEN1\r\n");
     } else {
         tx_flag = 1;
@@ -236,12 +240,8 @@ void usbd_audio_set_sampling_freq(uint8_t entity_id, uint8_t ep_ch, uint32_t sam
 #define AUDIO_OUT_EP_MPS 64
 #endif
 
-USB_NOCACHE_RAM_SECTION USB_MEM_ALIGNX uint8_t out_buffer[AUDIO_OUT_EP_MPS];
-
 void usbd_configure_done_callback(void)
 {
-    /* setup first out ep read transfer */
-    usbd_ep_start_read(AUDIO_OUT_EP, out_buffer, AUDIO_OUT_EP_MPS);
 }
 
 void usbd_audio_iso_out_callback(uint8_t ep, uint32_t nbytes)
diff --git a/demo/audio_v2_speaker_multichan_template.c b/demo/audio_v2_speaker_multichan_template.c
index c1de77cf..c4b7b481 100644
--- a/demo/audio_v2_speaker_multichan_template.c
+++ b/demo/audio_v2_speaker_multichan_template.c
@@ -14,7 +14,7 @@
 
 #define AUDIO_OUT_EP 0x01
 
-#define AUDIO_FREQ 48000
+#define AUDIO_FREQ      48000
 #define HALF_WORD_BYTES 2  //2 half word (one channel)
 #define SAMPLE_BITS     16 //16 bit per channel
 
@@ -146,11 +146,16 @@ const uint8_t audio_descriptor[] = {
 #endif
     0x00
 };
+
+USB_NOCACHE_RAM_SECTION USB_MEM_ALIGNX uint8_t out_buffer[AUDIO_OUT_EP_MPS];
+
 volatile bool rx_flag = 0;
 
 void usbd_audio_open(uint8_t intf)
 {
     rx_flag = 1;
+    /* setup first out ep read transfer */
+    usbd_ep_start_read(AUDIO_OUT_EP, out_buffer, AUDIO_OUT_EP_MPS);
     USB_LOG_RAW("OPEN\r\n");
 }
 void usbd_audio_close(uint8_t intf)
@@ -165,12 +170,8 @@ void usbd_audio_close(uint8_t intf)
 #define AUDIO_OUT_EP_MPS 64
 #endif
 
-USB_NOCACHE_RAM_SECTION USB_MEM_ALIGNX uint8_t out_buffer[AUDIO_OUT_EP_MPS];
-
 void usbd_configure_done_callback(void)
 {
-    /* setup first out ep read transfer */
-    usbd_ep_start_read(AUDIO_OUT_EP, out_buffer, AUDIO_OUT_EP_MPS);
 }
 
 void usbd_audio_iso_out_callback(uint8_t ep, uint32_t nbytes)