From 0423ad826a390179ffb4d24ead1236a203dfce1c Mon Sep 17 00:00:00 2001
From: jflyper <shinoda@jaist.ac.jp>
Date: Sun, 13 Sep 2020 12:23:01 +0900
Subject: [PATCH] [H7][USB] Add transmit complete callback in USBD_CDC_fops

---
 src/main/vcp_hal/usbd_cdc_interface.c | 23 ++++++++++++++++++++++-
 1 file changed, 22 insertions(+), 1 deletion(-)

diff --git a/src/main/vcp_hal/usbd_cdc_interface.c b/src/main/vcp_hal/usbd_cdc_interface.c
index 3aa99cc23c..96dd0b7a5a 100644
--- a/src/main/vcp_hal/usbd_cdc_interface.c
+++ b/src/main/vcp_hal/usbd_cdc_interface.c
@@ -104,6 +104,13 @@ static int8_t CDC_Itf_DeInit(void);
 static int8_t CDC_Itf_Control(uint8_t cmd, uint8_t* pbuf, uint16_t length);
 static int8_t CDC_Itf_Receive(uint8_t* pbuf, uint32_t *Len);
 
+// The CDC_Itf_TransmitCplt field was introduced in MiddleWare that comes with
+// H7 V1.8.0.
+// Other MCU can be add here as the MiddleWare version advances.
+#ifdef STM32H7
+static int8_t CDC_Itf_TransmitCplt(uint8_t *Buf, uint32_t *Len, uint8_t epnum);
+#endif
+
 static void TIM_Config(void);
 static void Error_Handler(void);
 
@@ -112,7 +119,10 @@ USBD_CDC_ItfTypeDef USBD_CDC_fops =
   CDC_Itf_Init,
   CDC_Itf_DeInit,
   CDC_Itf_Control,
-  CDC_Itf_Receive
+  CDC_Itf_Receive,
+#ifdef STM32H7
+  CDC_Itf_TransmitCplt
+#endif
 };
 
 
@@ -315,6 +325,17 @@ static int8_t CDC_Itf_Receive(uint8_t* Buf, uint32_t *Len)
     return (USBD_OK);
 }
 
+#ifdef STM32H7
+static int8_t CDC_Itf_TransmitCplt(uint8_t *Buf, uint32_t *Len, uint8_t epnum)
+{
+    UNUSED(Buf);
+    UNUSED(Len);
+    UNUSED(epnum);
+
+    return (USBD_OK);
+}
+#endif
+
 /**
   * @brief  TIM_Config: Configure TIMusb timer
   * @param  None.