--- /dev/null
+/**
+ ******************************************************************************
+ * @file usbh_hcs.c
+ * @author MCD Application Team
+ * @version V2.0.0
+ * @date 22-July-2011
+ * @brief This file implements functions for opening and closing host channels
+ ******************************************************************************
+ * @attention
+ *
+ * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
+ * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
+ * TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY
+ * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
+ * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
+ * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
+ *
+ * <h2><center>© COPYRIGHT 2011 STMicroelectronics</center></h2>
+ ******************************************************************************
+ */
+
+/* Includes ------------------------------------------------------------------*/
+#include "usbh_hcs.h"
+
+/** @addtogroup USBH_LIB
+ * @{
+ */
+
+/** @addtogroup USBH_LIB_CORE
+* @{
+*/
+
+/** @defgroup USBH_HCS
+ * @brief This file includes opening and closing host channels
+ * @{
+ */
+
+/** @defgroup USBH_HCS_Private_Defines
+ * @{
+ */
+/**
+ * @}
+ */
+
+/** @defgroup USBH_HCS_Private_TypesDefinitions
+ * @{
+ */
+/**
+ * @}
+ */
+
+
+/** @defgroup USBH_HCS_Private_Macros
+ * @{
+ */
+/**
+ * @}
+ */
+
+
+/** @defgroup USBH_HCS_Private_Variables
+ * @{
+ */
+
+/**
+ * @}
+ */
+
+
+/** @defgroup USBH_HCS_Private_FunctionPrototypes
+ * @{
+ */
+static uint16_t USBH_GetFreeChannel (USB_OTG_CORE_HANDLE *pdev);
+/**
+ * @}
+ */
+
+
+/** @defgroup USBH_HCS_Private_Functions
+ * @{
+ */
+
+
+
+/**
+ * @brief USBH_Open_Channel
+ * Open a pipe
+ * @param pdev : Selected device
+ * @param hc_num: Host channel Number
+ * @param dev_address: USB Device address allocated to attached device
+ * @param speed : USB device speed (Full/Low)
+ * @param ep_type: end point type (Bulk/int/ctl)
+ * @param mps: max pkt size
+ * @retval Status
+ */
+uint8_t USBH_Open_Channel (USB_OTG_CORE_HANDLE *pdev,
+ uint8_t hc_num,
+ uint8_t dev_address,
+ uint8_t speed,
+ uint8_t ep_type,
+ uint16_t mps)
+{
+
+ pdev->host.hc[hc_num].ep_num = pdev->host.channel[hc_num]& 0x7F;
+ pdev->host.hc[hc_num].ep_is_in = (pdev->host.channel[hc_num] & 0x80 ) == 0x80;
+ pdev->host.hc[hc_num].dev_addr = dev_address;
+ pdev->host.hc[hc_num].ep_type = ep_type;
+ pdev->host.hc[hc_num].max_packet = mps;
+ pdev->host.hc[hc_num].speed = speed;
+ pdev->host.hc[hc_num].toggle_in = 0;
+ pdev->host.hc[hc_num].toggle_out = 0;
+ if(speed == HPRT0_PRTSPD_HIGH_SPEED)
+ {
+ pdev->host.hc[hc_num].do_ping = 1;
+ }
+
+ USB_OTG_HC_Init(pdev, hc_num) ;
+
+ return HC_OK;
+
+}
+
+/**
+ * @brief USBH_Modify_Channel
+ * Modify a pipe
+ * @param pdev : Selected device
+ * @param hc_num: Host channel Number
+ * @param dev_address: USB Device address allocated to attached device
+ * @param speed : USB device speed (Full/Low)
+ * @param ep_type: end point type (Bulk/int/ctl)
+ * @param mps: max pkt size
+ * @retval Status
+ */
+uint8_t USBH_Modify_Channel (USB_OTG_CORE_HANDLE *pdev,
+ uint8_t hc_num,
+ uint8_t dev_address,
+ uint8_t speed,
+ uint8_t ep_type,
+ uint16_t mps)
+{
+
+ if(dev_address != 0)
+ {
+ pdev->host.hc[hc_num].dev_addr = dev_address;
+ }
+
+ if((pdev->host.hc[hc_num].max_packet != mps) && (mps != 0))
+ {
+ pdev->host.hc[hc_num].max_packet = mps;
+ }
+
+ if((pdev->host.hc[hc_num].speed != speed ) && (speed != 0 ))
+ {
+ pdev->host.hc[hc_num].speed = speed;
+ }
+
+ USB_OTG_HC_Init(pdev, hc_num);
+ return HC_OK;
+
+}
+
+/**
+ * @brief USBH_Alloc_Channel
+ * Allocate a new channel for the pipe
+ * @param ep_addr: End point for which the channel to be allocated
+ * @retval hc_num: Host channel number
+ */
+uint8_t USBH_Alloc_Channel (USB_OTG_CORE_HANDLE *pdev, uint8_t ep_addr)
+{
+ uint16_t hc_num;
+
+ hc_num = USBH_GetFreeChannel(pdev);
+
+ if (hc_num != HC_ERROR)
+ {
+ pdev->host.channel[hc_num] = HC_USED | ep_addr;
+ }
+ return hc_num;
+}
+
+/**
+ * @brief USBH_Free_Pipe
+ * Free the USB host channel
+ * @param idx: Channel number to be freed
+ * @retval Status
+ */
+uint8_t USBH_Free_Channel (USB_OTG_CORE_HANDLE *pdev, uint8_t idx)
+{
+ if(idx < HC_MAX)
+ {
+ pdev->host.channel[idx] &= HC_USED_MASK;
+ }
+ return USBH_OK;
+}
+
+
+/**
+ * @brief USBH_DeAllocate_AllChannel
+ * Free all USB host channel
+* @param pdev : core instance
+ * @retval Status
+ */
+uint8_t USBH_DeAllocate_AllChannel (USB_OTG_CORE_HANDLE *pdev)
+{
+ uint8_t idx;
+
+ for (idx = 2; idx < HC_MAX ; idx ++)
+ {
+ pdev->host.channel[idx] = 0;
+ }
+ return USBH_OK;
+}
+
+/**
+ * @brief USBH_GetFreeChannel
+ * Get a free channel number for allocation to a device endpoint
+ * @param None
+ * @retval idx: Free Channel number
+ */
+static uint16_t USBH_GetFreeChannel (USB_OTG_CORE_HANDLE *pdev)
+{
+ uint8_t idx = 0;
+
+ for (idx = 0 ; idx < HC_MAX ; idx++)
+ {
+ if ((pdev->host.channel[idx] & HC_USED) == 0)
+ {
+ return idx;
+ }
+ }
+ return HC_ERROR;
+}
+
+
+/**
+* @}
+*/
+
+/**
+* @}
+*/
+
+/**
+* @}
+*/
+
+/**
+* @}
+*/
+
+/******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/
+
+