usbd_otp_if.c

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/* Includes ------------------------------------------------------------------*/
#include "usbd_otp_if.h"
#include "usbd_dfu_mal.h"

/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/

/* Private function prototypes -----------------------------------------------*/
uint16_t OTP_If_Write (uint32_t Add, uint32_t Len);
uint8_t *OTP_If_Read  (uint32_t Add, uint32_t Len);
uint16_t OTP_If_DeInit(void);
uint16_t OTP_If_CheckAdd(uint32_t Add);


/* Private variables ---------------------------------------------------------*/
DFU_MAL_Prop_TypeDef DFU_Otp_cb =
  {
    OTP_IF_STRING,
    NULL, /* Init not supported*/
    NULL, /* DeInit not supported */
    NULL, /* Erase not supported */
    OTP_If_Write,
    OTP_If_Read,
    OTP_If_CheckAdd,
    1,  /* Erase Time in ms */
    10  /* Programming Time in ms */
  };
  
/* Private functions ---------------------------------------------------------*/

uint16_t OTP_If_Write(uint32_t Add, uint32_t Len)
{
  uint32_t idx = 0;
  
  if  (Len & 0x3) /* Not an aligned data */
  {
    for (idx = Len; idx < ((Len & 0xFFFC) + 4); idx++)
    {
      MAL_Buffer[idx] = 0xFF;
    }
  }
  
  /* Data received are Word multiple */
  for (idx = 0; idx <  Len; idx = idx + 4)
  {
    FLASH_ProgramWord(Add, *(uint32_t *)(MAL_Buffer + idx));
    Add += 4;
  }
  return MAL_OK;
}

uint8_t *OTP_If_Read (uint32_t Add, uint32_t Len)
{
#ifdef USB_OTG_HS_INTERNAL_DMA_ENABLED
  uint32_t idx = 0;
  for (idx = 0; idx < Len; idx += 4)
  {
    *(uint32_t*)(MAL_Buffer + idx) = *(uint32_t *)(Add + idx);
  }
  return (uint8_t*)(MAL_Buffer);
#else
  return  (uint8_t*)(Add);
#endif /* USB_OTG_HS_INTERNAL_DMA_ENABLED */
}

uint16_t OTP_If_CheckAdd(uint32_t Add)
{
  if ((Add >= OTP_START_ADD) && (Add < OTP_END_ADD))
  {
    return MAL_OK;
  }
  else
  {
    return MAL_FAIL;
  }
}
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/