format code

4 files changed, 221 insertions, 245 deletions

diff --git a/common/usb_dc.h b/common/usb_dc.h
index 02e6e6c0..bb838382 100644
--- a/common/usb_dc.h
+++ b/common/usb_dc.h
@@ -172,7 +172,7 @@ int usbd_ep_write(const uint8_t ep, const uint8_t *data, uint32_t data_len, uint
  * This is similar to usb_dc_ep_read, the difference being that, it doesn't

  * clear the endpoint NAKs so that the consumer is not bogged down by further

  * upcalls till he is done with the processing of the data. The caller should

- * reactivate ep by invoking usb_dc_ep_read_continue() do so.

+ * reactivate ep by setting max_data_len 0 do so.

  *

  * @param[in]  ep           Endpoint address corresponding to the one

  *                          listed in the device configuration table

diff --git a/common/usb_util.h b/common/usb_util.h
index 4586b360..d3d575e5 100644
--- a/common/usb_util.h
+++ b/common/usb_util.h
@@ -143,7 +143,7 @@
 #define USBD_LOG_INFO(a, ...) printf(a, ##__VA_ARGS__)

 #define USBD_LOG_DBG(a, ...)

 #define USBD_LOG_WRN(a, ...) printf(a, ##__VA_ARGS__)

-#define USBD_LOG_ERR(a, ...)  printf(a, ##__VA_ARGS__)

+#define USBD_LOG_ERR(a, ...) printf(a, ##__VA_ARGS__)

 #endif

 

 #endif
\ No newline at end of file
diff --git a/core/usbd_core.c b/core/usbd_core.c
index e1ed68fb..24e3c07e 100644
--- a/core/usbd_core.c
+++ b/core/usbd_core.c
@@ -89,12 +89,12 @@ static struct usb_bos_descriptor *bos_desc;
 static void usbd_print_setup(struct usb_setup_packet *setup)

 {

     USBD_LOG_INFO("Setup: "

-                 "bmRequestType 0x%02x, bRequest 0x%02x, wValue 0x%04x, wIndex 0x%04x, wLength 0x%04x\r\n",

-                 setup->bmRequestType,

-                 setup->bRequest,

-                 setup->wValue,

-                 setup->wIndex,

-                 setup->wLength);

+                  "bmRequestType 0x%02x, bRequest 0x%02x, wValue 0x%04x, wIndex 0x%04x, wLength 0x%04x\r\n",

+                  setup->bmRequestType,

+                  setup->bRequest,

+                  setup->wValue,

+                  setup->wIndex,

+                  setup->wLength);

 }

 

 /**

@@ -203,7 +203,7 @@ static bool usbd_set_endpoint(const struct usb_endpoint_descriptor *ep_desc)
     ep_cfg.ep_type = ep_desc->bmAttributes & USBD_EP_TYPE_MASK;

 

     USBD_LOG_INFO("Open endpoint:0x%x type:%u mps:%u\r\n",

-             ep_cfg.ep_addr, ep_cfg.ep_type, ep_cfg.ep_mps);

+                  ep_cfg.ep_addr, ep_cfg.ep_type, ep_cfg.ep_mps);

 

     usbd_ep_open(&ep_cfg);

     usbd_core_cfg.configured = true;

@@ -229,7 +229,7 @@ static bool usbd_reset_endpoint(const struct usb_endpoint_descriptor *ep_desc)
     ep_cfg.ep_type = ep_desc->bmAttributes & USBD_EP_TYPE_MASK;

 

     USBD_LOG_INFO("Close endpoint:0x%x type:%u\r\n",

-             ep_cfg.ep_addr, ep_cfg.ep_type);

+                  ep_cfg.ep_addr, ep_cfg.ep_type);

 

     usbd_ep_close(ep_cfg.ep_addr);

 

diff --git a/port/stm32/usb_dc.c b/port/stm32/usb_dc.c
index f2d3a9bd..b7ea0a35 100644
--- a/port/stm32/usb_dc.c
+++ b/port/stm32/usb_dc.c
@@ -22,14 +22,14 @@ extern PCD_HandleTypeDef hpcd_USB_FS;
 #ifdef USB
 
 #define EP0_MPS 64U
-#define EP_MPS 64U
+#define EP_MPS  64U
 
 /*
  * USB BTABLE is stored in the PMA. The size of BTABLE is 4 bytes
  * per endpoint.
  *
  */
-#define USB_BTABLE_SIZE  (8 * USB_NUM_BIDIR_ENDPOINTS)
+#define USB_BTABLE_SIZE (8 * USB_NUM_BIDIR_ENDPOINTS)
 
 #else /* USB_OTG_FS */
 
@@ -51,10 +51,10 @@ extern PCD_HandleTypeDef hpcd_USB_FS;
 #endif
 
 /* We need one RX FIFO and n TX-IN FIFOs */
-#define FIFO_NUM (1 + USB_NUM_BIDIR_ENDPOINTS)
+#define FIFO_NUM      (1 + USB_NUM_BIDIR_ENDPOINTS)
 
 /* 4-byte words FIFO */
-#define FIFO_WORDS (USB_RAM_SIZE / 4)
+#define FIFO_WORDS    (USB_RAM_SIZE / 4)
 
 /* Allocate FIFO memory evenly between the FIFOs */
 #define FIFO_EP_WORDS (FIFO_WORDS / FIFO_NUM)
@@ -63,24 +63,24 @@ extern PCD_HandleTypeDef hpcd_USB_FS;
 
 /* Endpoint state */
 struct usb_dc_ep_state {
-	uint16_t ep_mps;		/** Endpoint max packet size */
+    uint16_t ep_mps; /** Endpoint max packet size */
 #ifdef USB
-	uint16_t ep_pma_buf_len;	/** Previously allocated buffer size */
+    uint16_t ep_pma_buf_len; /** Previously allocated buffer size */
 #endif
-	uint8_t ep_type;		/** Endpoint type (STM32 HAL enum) */
-	uint8_t ep_stalled;	/** Endpoint stall flag */
-	uint32_t read_count;	/** Number of bytes in read buffer  */
-	uint32_t read_offset;	/** Current offset in read buffer */
+    uint8_t ep_type;      /** Endpoint type (STM32 HAL enum) */
+    uint8_t ep_stalled;   /** Endpoint stall flag */
+    uint32_t read_count;  /** Number of bytes in read buffer  */
+    uint32_t read_offset; /** Current offset in read buffer */
 };
 
 /* Driver state */
 struct usb_dc_pcd_state {
-	struct usb_dc_ep_state out_ep_state[USB_NUM_BIDIR_ENDPOINTS];
-	struct usb_dc_ep_state in_ep_state[USB_NUM_BIDIR_ENDPOINTS];
-	uint8_t ep_buf[USB_NUM_BIDIR_ENDPOINTS][EP_MPS];
+    struct usb_dc_ep_state out_ep_state[USB_NUM_BIDIR_ENDPOINTS];
+    struct usb_dc_ep_state in_ep_state[USB_NUM_BIDIR_ENDPOINTS];
+    uint8_t ep_buf[USB_NUM_BIDIR_ENDPOINTS][EP_MPS];
 
 #ifdef USB
-	uint32_t pma_offset;
+    uint32_t pma_offset;
 #endif /* USB */
 };
 
@@ -90,376 +90,352 @@ static struct usb_dc_pcd_state usb_dc_pcd_state;
 
 static struct usb_dc_ep_state *usb_dc_stm32_get_ep_state(uint8_t ep)
 {
-	struct usb_dc_ep_state *ep_state_base;
+    struct usb_dc_ep_state *ep_state_base;
 
-	if (USB_EP_GET_IDX(ep) >= USB_NUM_BIDIR_ENDPOINTS) {
-		return NULL;
-	}
+    if (USB_EP_GET_IDX(ep) >= USB_NUM_BIDIR_ENDPOINTS) {
+        return NULL;
+    }
 
-	if (USB_EP_DIR_IS_OUT(ep)) {
-		ep_state_base = usb_dc_pcd_state.out_ep_state;
-	} else {
-		ep_state_base = usb_dc_pcd_state.in_ep_state;
-	}
+    if (USB_EP_DIR_IS_OUT(ep)) {
+        ep_state_base = usb_dc_pcd_state.out_ep_state;
+    } else {
+        ep_state_base = usb_dc_pcd_state.in_ep_state;
+    }
 
-	return ep_state_base + USB_EP_GET_IDX(ep);
+    return ep_state_base + USB_EP_GET_IDX(ep);
 }
 
 int usb_dc_init(void)
 {
-	HAL_StatusTypeDef status;
-	unsigned int i;
+    HAL_StatusTypeDef status;
+    unsigned int i;
 
     /*pcd has init*/
-	status = HAL_PCD_Start(&hpcd_USB_FS);
-	if (status != HAL_OK) {
-		return -2;
-	}
+    status = HAL_PCD_Start(&hpcd_USB_FS);
+    if (status != HAL_OK) {
+        return -2;
+    }
 
-	usb_dc_pcd_state.out_ep_state[0].ep_mps = EP0_MPS;
-	usb_dc_pcd_state.out_ep_state[0].ep_type = EP_TYPE_CTRL;
-	usb_dc_pcd_state.in_ep_state[0].ep_mps = EP0_MPS;
-	usb_dc_pcd_state.in_ep_state[0].ep_type = EP_TYPE_CTRL;
+    usb_dc_pcd_state.out_ep_state[0].ep_mps = EP0_MPS;
+    usb_dc_pcd_state.out_ep_state[0].ep_type = EP_TYPE_CTRL;
+    usb_dc_pcd_state.in_ep_state[0].ep_mps = EP0_MPS;
+    usb_dc_pcd_state.in_ep_state[0].ep_type = EP_TYPE_CTRL;
 
 #ifdef USB
-	/* Start PMA configuration for the endpoints after the BTABLE. */
-	usb_dc_pcd_state.pma_offset = USB_BTABLE_SIZE;
+    /* Start PMA configuration for the endpoints after the BTABLE. */
+    usb_dc_pcd_state.pma_offset = USB_BTABLE_SIZE;
 #else /* USB_OTG_FS */
-	/* TODO: make this dynamic (depending usage) */
-	HAL_PCDEx_SetRxFiFo(&hpcd_USB_FS, FIFO_EP_WORDS);
-	for (i = 0U; i < USB_NUM_BIDIR_ENDPOINTS; i++) {
-		HAL_PCDEx_SetTxFiFo(&hpcd_USB_FS, i,
-				    FIFO_EP_WORDS);
-	}
+    /* TODO: make this dynamic (depending usage) */
+    HAL_PCDEx_SetRxFiFo(&hpcd_USB_FS, FIFO_EP_WORDS);
+    for (i = 0U; i < USB_NUM_BIDIR_ENDPOINTS; i++) {
+        HAL_PCDEx_SetTxFiFo(&hpcd_USB_FS, i,
+                            FIFO_EP_WORDS);
+    }
 #endif /* USB */
-	return 0;
+    return 0;
 }
 
-
 void usb_dc_deinit(void)
 {
-
-
 }
 
 int usbd_set_address(const uint8_t addr)
 {
-	HAL_StatusTypeDef status;
+    HAL_StatusTypeDef status;
 
-	status = HAL_PCD_SetAddress(&hpcd_USB_FS, addr);
-	if (status != HAL_OK) {
-		return -2;
-	}
+    status = HAL_PCD_SetAddress(&hpcd_USB_FS, addr);
+    if (status != HAL_OK) {
+        return -2;
+    }
 
-  return 0;
+    return 0;
 }
 
 int usbd_ep_open(const struct usbd_endpoint_cfg *ep_cfg)
 {
     HAL_StatusTypeDef status;
-	uint8_t ep = ep_cfg->ep_addr;
-	struct usb_dc_ep_state *ep_state = usb_dc_stm32_get_ep_state(ep);
+    uint8_t ep = ep_cfg->ep_addr;
+    struct usb_dc_ep_state *ep_state = usb_dc_stm32_get_ep_state(ep);
 
-	if (!ep_state) {
-		return -1;
-	}
+    if (!ep_state) {
+        return -1;
+    }
 
 #ifdef USB
-	if (ep_cfg->ep_mps > ep_state->ep_pma_buf_len) {
-		if (USB_RAM_SIZE <=
-		    (usb_dc_pcd_state.pma_offset + ep_cfg->ep_mps)) {
-			return -1;
-		}
-		HAL_PCDEx_PMAConfig(&hpcd_USB_FS, ep, PCD_SNG_BUF,
-				    usb_dc_pcd_state.pma_offset);
-		ep_state->ep_pma_buf_len = ep_cfg->ep_mps;
-		usb_dc_pcd_state.pma_offset += ep_cfg->ep_mps;
-	}
+    if (ep_cfg->ep_mps > ep_state->ep_pma_buf_len) {
+        if (USB_RAM_SIZE <=
+            (usb_dc_pcd_state.pma_offset + ep_cfg->ep_mps)) {
+            return -1;
+        }
+        HAL_PCDEx_PMAConfig(&hpcd_USB_FS, ep, PCD_SNG_BUF,
+                            usb_dc_pcd_state.pma_offset);
+        ep_state->ep_pma_buf_len = ep_cfg->ep_mps;
+        usb_dc_pcd_state.pma_offset += ep_cfg->ep_mps;
+    }
 #endif
-	ep_state->ep_mps = ep_cfg->ep_mps;
+    ep_state->ep_mps = ep_cfg->ep_mps;
 
-	switch (ep_cfg->ep_type) {
-	case USB_DC_EP_CONTROL:
-		ep_state->ep_type = EP_TYPE_CTRL;
-		break;
-	case USB_DC_EP_ISOCHRONOUS:
-		ep_state->ep_type = EP_TYPE_ISOC;
-		break;
-	case USB_DC_EP_BULK:
-		ep_state->ep_type = EP_TYPE_BULK;
-		break;
-	case USB_DC_EP_INTERRUPT:
-		ep_state->ep_type = EP_TYPE_INTR;
-		break;
-	default:
-		return -1;
-	}
+    switch (ep_cfg->ep_type) {
+        case USB_DC_EP_CONTROL:
+            ep_state->ep_type = EP_TYPE_CTRL;
+            break;
+        case USB_DC_EP_ISOCHRONOUS:
+            ep_state->ep_type = EP_TYPE_ISOC;
+            break;
+        case USB_DC_EP_BULK:
+            ep_state->ep_type = EP_TYPE_BULK;
+            break;
+        case USB_DC_EP_INTERRUPT:
+            ep_state->ep_type = EP_TYPE_INTR;
+            break;
+        default:
+            return -1;
+    }
 
-	status = HAL_PCD_EP_Open(&hpcd_USB_FS, ep,
-				 ep_state->ep_mps, ep_state->ep_type);
-	if (status != HAL_OK) {
-		return -1;
-	}
+    status = HAL_PCD_EP_Open(&hpcd_USB_FS, ep,
+                             ep_state->ep_mps, ep_state->ep_type);
+    if (status != HAL_OK) {
+        return -1;
+    }
 
-	if (USB_EP_DIR_IS_OUT(ep) && ep != USB_CONTROL_OUT_EP0) {
-       return HAL_PCD_EP_Receive(&hpcd_USB_FS, ep,
-                        usb_dc_pcd_state.ep_buf[USB_EP_GET_IDX(ep)],
-                        EP_MPS);
-	}
+    if (USB_EP_DIR_IS_OUT(ep) && ep != USB_CONTROL_OUT_EP0) {
+        return HAL_PCD_EP_Receive(&hpcd_USB_FS, ep,
+                                  usb_dc_pcd_state.ep_buf[USB_EP_GET_IDX(ep)],
+                                  EP_MPS);
+    }
     return 0;
 }
 int usbd_ep_close(const uint8_t ep)
 {
-	struct usb_dc_ep_state *ep_state = usb_dc_stm32_get_ep_state(ep);
-	HAL_StatusTypeDef status;
+    struct usb_dc_ep_state *ep_state = usb_dc_stm32_get_ep_state(ep);
+    HAL_StatusTypeDef status;
 
-	if (!ep_state) {
-		return -1;
-	}
+    if (!ep_state) {
+        return -1;
+    }
 
-	status = HAL_PCD_EP_Close(&hpcd_USB_FS, ep);
-	if (status != HAL_OK) {
-		return -2;
-	}
+    status = HAL_PCD_EP_Close(&hpcd_USB_FS, ep);
+    if (status != HAL_OK) {
+        return -2;
+    }
 
     return 0;
 }
 int usbd_ep_set_stall(const uint8_t ep)
 {
-	struct usb_dc_ep_state *ep_state = usb_dc_stm32_get_ep_state(ep);
-	HAL_StatusTypeDef status;
+    struct usb_dc_ep_state *ep_state = usb_dc_stm32_get_ep_state(ep);
+    HAL_StatusTypeDef status;
 
-	if (!ep_state) {
-		return -1;
-	}
+    if (!ep_state) {
+        return -1;
+    }
 
-	status = HAL_PCD_EP_SetStall(&hpcd_USB_FS, ep);
-	if (status != HAL_OK) {
-		return -2;
-	}
+    status = HAL_PCD_EP_SetStall(&hpcd_USB_FS, ep);
+    if (status != HAL_OK) {
+        return -2;
+    }
 
-	ep_state->ep_stalled = 1U;
+    ep_state->ep_stalled = 1U;
 
     return 0;
 }
 int usbd_ep_clear_stall(const uint8_t ep)
 {
-	struct usb_dc_ep_state *ep_state = usb_dc_stm32_get_ep_state(ep);
-	HAL_StatusTypeDef status;
+    struct usb_dc_ep_state *ep_state = usb_dc_stm32_get_ep_state(ep);
+    HAL_StatusTypeDef status;
 
-	if (!ep_state) {
-		return -1;
-	}
+    if (!ep_state) {
+        return -1;
+    }
 
-	status = HAL_PCD_EP_ClrStall(&hpcd_USB_FS, ep);
-	if (status != HAL_OK) {
-		return -2;
-	}
+    status = HAL_PCD_EP_ClrStall(&hpcd_USB_FS, ep);
+    if (status != HAL_OK) {
+        return -2;
+    }
 
-	ep_state->ep_stalled = 0U;
-	ep_state->read_count = 0U;
+    ep_state->ep_stalled = 0U;
+    ep_state->read_count = 0U;
 
     return 0;
 }
 int usbd_ep_is_stalled(const uint8_t ep, uint8_t *stalled)
 {
-	struct usb_dc_ep_state *ep_state = usb_dc_stm32_get_ep_state(ep);
+    struct usb_dc_ep_state *ep_state = usb_dc_stm32_get_ep_state(ep);
 
-	if (!ep_state || !stalled) {
-		return -1;
-	}
+    if (!ep_state || !stalled) {
+        return -1;
+    }
 
-	*stalled = ep_state->ep_stalled;
+    *stalled = ep_state->ep_stalled;
 
     return 0;
 }
 
 int usbd_ep_write(const uint8_t ep, const uint8_t *data, uint32_t data_len, uint32_t *ret_bytes)
 {
-	struct usb_dc_ep_state *ep_state = usb_dc_stm32_get_ep_state(ep);
-	HAL_StatusTypeDef status;
-	int ret = 0;
+    struct usb_dc_ep_state *ep_state = usb_dc_stm32_get_ep_state(ep);
+    HAL_StatusTypeDef status;
+    int ret = 0;
 
-	if (!ep_state || !USB_EP_DIR_IS_IN(ep)) {
-		return -1;
-	}
+    if (!ep_state || !USB_EP_DIR_IS_IN(ep)) {
+        return -1;
+    }
 
-	if (ep == USB_CONTROL_IN_EP0 && data_len > 64) {
-		data_len = 64;
-	}
+    if (ep == USB_CONTROL_IN_EP0 && data_len > 64) {
+        data_len = 64;
+    }
 
-	status = HAL_PCD_EP_Transmit(&hpcd_USB_FS, ep,
-				     (void *)data, data_len);
-	if (status != HAL_OK) {
-		ret = -2;
-	}
+    status = HAL_PCD_EP_Transmit(&hpcd_USB_FS, ep,
+                                 (void *)data, data_len);
+    if (status != HAL_OK) {
+        ret = -2;
+    }
 
-	if (!ret && ep == USB_CONTROL_IN_EP0 && data_len > 0) {
-		/* Wait for an empty package as from the host.
+    if (!ret && ep == USB_CONTROL_IN_EP0 && data_len > 0) {
+        /* Wait for an empty package as from the host.
 		 * This also flushes the TX FIFO to the host.
 		 */
         status = HAL_PCD_EP_Receive(&hpcd_USB_FS, ep,
-                        usb_dc_pcd_state.ep_buf[USB_EP_GET_IDX(ep)],
-                        0);
-            if (status != HAL_OK) {
-                return -2;
-            }
-	}
+                                    usb_dc_pcd_state.ep_buf[USB_EP_GET_IDX(ep)],
+                                    0);
+        if (status != HAL_OK) {
+            return -2;
+        }
+    }
 
-	if (!ret && ret_bytes) {
-		*ret_bytes = data_len;
-	}
+    if (!ret && ret_bytes) {
+        *ret_bytes = data_len;
+    }
 
-	return ret;
+    return ret;
 }
 
-
 int usbd_ep_read(const uint8_t ep, uint8_t *data, uint32_t max_data_len, uint32_t *read_bytes)
 {
-	struct usb_dc_ep_state *ep_state = usb_dc_stm32_get_ep_state(ep);
-	uint32_t read_count;
+    struct usb_dc_ep_state *ep_state = usb_dc_stm32_get_ep_state(ep);
+    uint32_t read_count;
     HAL_StatusTypeDef status;
 
-	if (!ep_state) {
-		return -1;
-	}
-	if (!USB_EP_DIR_IS_OUT(ep)) { /* check if OUT ep */
-
-		return -1;
-	}
-    if(!data && max_data_len)
-    {
+    if (!ep_state) {
         return -1;
+    }
+    if (!USB_EP_DIR_IS_OUT(ep)) { /* check if OUT ep */
 
+        return -1;
+    }
+    if (!data && max_data_len) {
+        return -1;
     }
-    if(!max_data_len && (ep == 0x00))
-    {
+    if (!max_data_len && (ep == 0x00)) {
         /* do nothing*/
         return 0;
     }
 
     ep_state->read_count = HAL_PCD_EP_GetRxCount(&hpcd_USB_FS, ep);
-	ep_state->read_offset = 0U;
-	read_count = ep_state->read_count;
+    ep_state->read_offset = 0U;
+    read_count = ep_state->read_count;
 
-     /* When both buffer and max data to read are zero, just ingore reading
+    /* When both buffer and max data to read are zero, just ingore reading
 	 * and return available data in buffer. Otherwise, return data
 	 * previously stored in the buffer.
 	 */
-	if (data) {
-		read_count = MIN(read_count, max_data_len);
-		memcpy(data, usb_dc_pcd_state.ep_buf[USB_EP_GET_IDX(ep)] +
-		       ep_state->read_offset, read_count);
-		ep_state->read_count -= read_count;
-		ep_state->read_offset += read_count;
-	}
+    if (data) {
+        read_count = MIN(read_count, max_data_len);
+        memcpy(data, usb_dc_pcd_state.ep_buf[USB_EP_GET_IDX(ep)] + ep_state->read_offset, read_count);
+        ep_state->read_count -= read_count;
+        ep_state->read_offset += read_count;
+    }
 
     /* If no more data in the buffer, start a new read transaction.
 	 * DataOutStageCallback will called on transaction complete.
 	 */
-	if (!ep_state->read_count) {
+    if (!ep_state->read_count) {
         status = HAL_PCD_EP_Receive(&hpcd_USB_FS, ep,
-                        usb_dc_pcd_state.ep_buf[USB_EP_GET_IDX(ep)],
-                        EP_MPS);
-            if (status != HAL_OK) {
-                return -2;
-            }
-	}
-	if (read_bytes) {
-		*read_bytes = read_count;
-	}
+                                    usb_dc_pcd_state.ep_buf[USB_EP_GET_IDX(ep)],
+                                    EP_MPS);
+        if (status != HAL_OK) {
+            return -2;
+        }
+    }
+    if (read_bytes) {
+        *read_bytes = read_count;
+    }
 
     return 0;
 }
 
-
-
 /* Callbacks from the STM32 Cube HAL code */
 void HAL_PCD_SOFCallback(PCD_HandleTypeDef *hpcd)
 {
-
 }
 
 void HAL_PCD_ResetCallback(PCD_HandleTypeDef *hpcd)
 {
     struct usbd_endpoint_cfg ep0_cfg;
-   /* Configure control EP */
-	ep0_cfg.ep_mps = EP0_MPS;
-	ep0_cfg.ep_type = USB_DC_EP_CONTROL;
+    /* Configure control EP */
+    ep0_cfg.ep_mps = EP0_MPS;
+    ep0_cfg.ep_type = USB_DC_EP_CONTROL;
 
-	ep0_cfg.ep_addr = USB_CONTROL_OUT_EP0;
-	usbd_ep_open(&ep0_cfg);
+    ep0_cfg.ep_addr = USB_CONTROL_OUT_EP0;
+    usbd_ep_open(&ep0_cfg);
 
-	ep0_cfg.ep_addr = USB_CONTROL_IN_EP0;
-	usbd_ep_open(&ep0_cfg);
-    usbd_event_notify_handler(USB_EVENT_RESET,NULL);
+    ep0_cfg.ep_addr = USB_CONTROL_IN_EP0;
+    usbd_ep_open(&ep0_cfg);
+    usbd_event_notify_handler(USB_EVENT_RESET, NULL);
 }
 
 void HAL_PCD_ConnectCallback(PCD_HandleTypeDef *hpcd)
 {
-
 }
 
 void HAL_PCD_DisconnectCallback(PCD_HandleTypeDef *hpcd)
 {
-
 }
 
 void HAL_PCD_SuspendCallback(PCD_HandleTypeDef *hpcd)
 {
-
 }
 
 void HAL_PCD_ResumeCallback(PCD_HandleTypeDef *hpcd)
 {
-
 }
 
 void HAL_PCD_SetupStageCallback(PCD_HandleTypeDef *hpcd)
 {
     struct usb_setup_packet *setup = (void *)hpcd_USB_FS.Setup;
-	struct usb_dc_ep_state *ep_state;
-
+    struct usb_dc_ep_state *ep_state;
 
-	ep_state = usb_dc_stm32_get_ep_state(0x00);
+    ep_state = usb_dc_stm32_get_ep_state(0x00);
 
-	ep_state->read_count = 8;
-	ep_state->read_offset = 0U;
-	memcpy(&usb_dc_pcd_state.ep_buf[0],
-	       hpcd_USB_FS.Setup, ep_state->read_count);
+    ep_state->read_count = 8;
+    ep_state->read_offset = 0U;
+    memcpy(&usb_dc_pcd_state.ep_buf[0],
+           hpcd_USB_FS.Setup, ep_state->read_count);
 
-    usbd_event_notify_handler(USB_EVENT_SETUP_NOTIFY,NULL);
-		if (!(setup->wLength == 0U) &&
-		    !(REQTYPE_GET_DIR(setup->bmRequestType) ==
-		    USB_REQUEST_DEVICE_TO_HOST)) {
-               HAL_PCD_EP_Receive(&hpcd_USB_FS, 0x00,
-                        usb_dc_pcd_state.ep_buf[0],
-                        setup->wLength);
-		}
+    usbd_event_notify_handler(USB_EVENT_SETUP_NOTIFY, NULL);
+    if (!(setup->wLength == 0U) &&
+        !(REQTYPE_GET_DIR(setup->bmRequestType) ==
+          USB_REQUEST_DEVICE_TO_HOST)) {
+        HAL_PCD_EP_Receive(&hpcd_USB_FS, 0x00,
+                           usb_dc_pcd_state.ep_buf[0],
+                           setup->wLength);
+    }
 }
 
 void HAL_PCD_DataOutStageCallback(PCD_HandleTypeDef *hpcd, uint8_t epnum)
 {
-    if(epnum == 0)
-    {
-       usbd_event_notify_handler(USB_EVENT_EP0_OUT_NOTIFY,NULL);
-    }
-    else
-    {
-       usbd_event_notify_handler(USB_EVENT_EP_OUT_NOTIFY,(void*)(epnum | USB_EP_DIR_OUT));
+    if (epnum == 0) {
+        usbd_event_notify_handler(USB_EVENT_EP0_OUT_NOTIFY, NULL);
+    } else {
+        usbd_event_notify_handler(USB_EVENT_EP_OUT_NOTIFY, (void *)(epnum | USB_EP_DIR_OUT));
     }
-
 }
 
 void HAL_PCD_DataInStageCallback(PCD_HandleTypeDef *hpcd, uint8_t epnum)
 {
-    if(epnum == 0)
-    {
-        usbd_event_notify_handler(USB_EVENT_EP0_IN_NOTIFY,NULL);
-    }
-    else
-    {
-       usbd_event_notify_handler(USB_EVENT_EP_IN_NOTIFY,(void*)(epnum | USB_EP_DIR_IN));
+    if (epnum == 0) {
+        usbd_event_notify_handler(USB_EVENT_EP0_IN_NOTIFY, NULL);
+    } else {
+        usbd_event_notify_handler(USB_EVENT_EP_IN_NOTIFY, (void *)(epnum | USB_EP_DIR_IN));
     }
-
 }
\ No newline at end of file