usbh_pipes.c

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/* Includes ------------------------------------------------------------------*/
#include "usbh_pipes.h"

static uint16_t USBH_GetFreePipe (USBH_HandleTypeDef *phost);


USBH_StatusTypeDef USBH_OpenPipe  (USBH_HandleTypeDef *phost,
                            uint8_t pipe_num,
                            uint8_t epnum,
                            uint8_t dev_address,
                            uint8_t speed,
                            uint8_t ep_type,
                            uint16_t mps)
{

  USBH_LL_OpenPipe(phost,
                        pipe_num,
                        epnum,
                        dev_address,
                        speed,
                        ep_type,
                        mps);
  
  return USBH_OK; 

}

USBH_StatusTypeDef USBH_ClosePipe  (USBH_HandleTypeDef *phost,
                            uint8_t pipe_num)
{

  USBH_LL_ClosePipe(phost, pipe_num);
  
  return USBH_OK; 

}

uint8_t USBH_AllocPipe  (USBH_HandleTypeDef *phost, uint8_t ep_addr)
{
  uint16_t pipe;
  
  pipe =  USBH_GetFreePipe(phost);

  if (pipe != 0xFFFF)
  {
    phost->Pipes[pipe] = 0x8000 | ep_addr;
  }
  return pipe;
}

USBH_StatusTypeDef USBH_FreePipe  (USBH_HandleTypeDef *phost, uint8_t idx)
{
   if(idx < 11)
   {
     phost->Pipes[idx] &= 0x7FFF;
   }
   return USBH_OK;
}

static uint16_t USBH_GetFreePipe (USBH_HandleTypeDef *phost)
{
  uint8_t idx = 0;
  
  for (idx = 0 ; idx < 11 ; idx++)
  {
    if ((phost->Pipes[idx] & 0x8000) == 0)
    {
       return idx;
    } 
  }
  return 0xFFFF;
}
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/