Add one extra sample to CFG_TUD_AUDIO_EP_SZ_IN

As per https://github.com/hathach/tinyusb/blob/2eaf99e0aa9c10d62dd8d0a4e765f5941bfeaf98/examples/device/audio_4_channel_mic/src/tusb_config.h#L104
batica81 · Sep 24, 2021 · 84e48c4 · 84e48c4
1 parent 3a56257
commit 84e48c4
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Showing 2 changed files with 4 additions and 4 deletions.
diff --git a/examples/usb_microphone/tusb_config.h b/examples/usb_microphone/tusb_config.h
@@ -100,9 +100,9 @@ extern "C" {
 #define CFG_TUD_AUDIO_ENABLE_EP_IN                                    1
 #define CFG_TUD_AUDIO_FUNC_1_N_BYTES_PER_SAMPLE_TX                    2                                       // Driver gets this info from the descriptors - we define it here to use it to setup the descriptors and to do calculations with it below
 #define CFG_TUD_AUDIO_FUNC_1_N_CHANNELS_TX                            1                                       // Driver gets this info from the descriptors - we define it here to use it to setup the descriptors and to do calculations with it below - be aware: for different number of channels you need another descriptor!
-#define CFG_TUD_AUDIO_EP_SZ_IN                                        16 * CFG_TUD_AUDIO_FUNC_1_N_BYTES_PER_SAMPLE_TX * CFG_TUD_AUDIO_FUNC_1_N_CHANNELS_TX      // 16 Samples (16 kHz) x 2 Bytes/Sample x 1 Channel
+#define CFG_TUD_AUDIO_EP_SZ_IN                                        (16 + 1) * CFG_TUD_AUDIO_FUNC_1_N_BYTES_PER_SAMPLE_TX * CFG_TUD_AUDIO_FUNC_1_N_CHANNELS_TX      // 16 Samples (16 kHz) x 2 Bytes/Sample x 1 Channel
 #define CFG_TUD_AUDIO_FUNC_1_EP_IN_SZ_MAX                             CFG_TUD_AUDIO_EP_SZ_IN                  // Maximum EP IN size for all AS alternate settings used
-#define CFG_TUD_AUDIO_FUNC_1_EP_IN_SW_BUF_SZ                          CFG_TUD_AUDIO_EP_SZ_IN + 1
+#define CFG_TUD_AUDIO_FUNC_1_EP_IN_SW_BUF_SZ                          CFG_TUD_AUDIO_EP_SZ_IN
 
 #ifdef __cplusplus
 }

diff --git a/examples/usb_microphone/usb_microphone.h b/examples/usb_microphone/usb_microphone.h
@@ -11,11 +11,11 @@
 #include "tusb.h"
 
 #ifndef SAMPLE_RATE
-#define SAMPLE_RATE (CFG_TUD_AUDIO_EP_SZ_IN / 2) * 1000
+#define SAMPLE_RATE ((CFG_TUD_AUDIO_EP_SZ_IN / 2) - 1) * 1000
 #endif
 
 #ifndef SAMPLE_BUFFER_SIZE
-#define SAMPLE_BUFFER_SIZE (CFG_TUD_AUDIO_EP_SZ_IN/2)
+#define SAMPLE_BUFFER_SIZE ((CFG_TUD_AUDIO_EP_SZ_IN/2) - 1)
 #endif
 
 typedef void (*usb_microphone_tx_ready_handler_t)(void);