FS_ConfigMMC_CM_HS.c

/*********************************************************************
*                   (c) SEGGER Microcontroller GmbH                  *
*                        The Embedded Experts                        *
*                           www.segger.com                           *
**********************************************************************

----------------------------------------------------------------------
Licensing information
Licensor:                 SEGGER Microcontroller Systems LLC
Licensed to:              Cypress Semiconductor Corp, 198 Champion Ct., San Jose, CA 95134, USA
Licensed SEGGER software: emFile
License number:           FS-00227
License model:            Cypress Services and License Agreement, signed November 17th/18th, 2010
                          and Amendment Number One, signed December 28th, 2020 and February 10th, 2021
Licensed platform:        Any Cypress platform (Initial targets are: PSoC3, PSoC5, PSoC6)
----------------------------------------------------------------------
Support and Update Agreement (SUA)
SUA period:               2010-12-01 - 2022-07-27
Contact to extend SUA:    sales@segger.com
-------------------------- END-OF-HEADER -----------------------------

File    : FS_ConfigMMC_CM_HS.c
Purpose : Configuration functions for FS with MMC/SD card mode driver
          using 4-bit or 8-bit data bus and high speed access mode.
*/

/*********************************************************************
*
*       #include section
*
**********************************************************************
*/
#include "FS.h"
#include "FS_MMC_HW_CM.h"
#include "cybsp.h"

/*********************************************************************
*
*       Defines, configurable
*
**********************************************************************
*/
#define ALLOC_SIZE                 0x2000      // Size defined in bytes

/*********************************************************************
*
*       Static data
*
**********************************************************************
*/
static U32 _aMemBlock[ALLOC_SIZE / 4];        // Memory pool used for semi-dynamic allocation.

static FS_MMC_HW_CM_SDHostConfig_t SDConfig =
{
    .Config =
    {
        .enableLedControl = false,
        .lowVoltageSignaling = false,
        .isEmmc = false,
        .busWidth = 4
    },

    .Cmd            = CYBSP_SDHC_CMD,
    .Clk            = CYBSP_SDHC_CLK,
    .Data0          = CYBSP_SDHC_IO0,
    .Data1          = CYBSP_SDHC_IO1,
    .Data2          = CYBSP_SDHC_IO2,
    .Data3          = CYBSP_SDHC_IO3,
    .Data4          = NC,
    .Data5          = NC,
    .Data6          = NC,
    .Data7          = NC,
    .CardDetect     = CYBSP_SDHC_DETECT,
    .IoVoltSel      = NC,
    .CardPwrEn      = NC,
    .CardWriteProt  = NC,
    .LedControl     = NC,
    .EmmcReset      = NC, 
    .BlockClk       = NULL
};

/*********************************************************************
*
*       Public code
*
**********************************************************************
*/

/*********************************************************************
*
*       FS_X_AddDevices
*
*  Function description
*    This function is called by the FS during FS_Init().
*    It is supposed to add all devices, using primarily FS_AddDevice().
*
*  Note
*    (1) Other API functions may NOT be called, since this function is called
*        during initialization. The devices are not yet ready at this point.
*/
void FS_X_AddDevices(void) {
  //
  // Give file system memory to work with.
  //
  FS_AssignMemory(&_aMemBlock[0], sizeof(_aMemBlock));
  //
  // Add and configure the driver.
  //
  FS_AddDevice(&FS_MMC_CM_Driver);
  FS_MMC_CM_Allow4bitMode(0, 1);
  FS_MMC_CM_AllowHighSpeedMode(0, 1);

  // Configure the HW layer and add it.
  (void) FS_MMC_HW_CM_Configure(0, &SDConfig);
  FS_MMC_CM_SetHWType(0, &FS_MMC_HW_CM);
  //
  // Configure the file system for fast write operations.
  //
#if FS_SUPPORT_FILE_BUFFER
  FS_ConfigFileBufferDefault(512, FS_FILE_BUFFER_WRITE);
#endif // FS_SUPPORT_FILE_BUFFER
  FS_SetFileWriteMode(FS_WRITEMODE_FAST);
}

/*********************************************************************
*
*       FS_X_GetTimeDate
*
*  Function description
*    Current time and date in a format suitable for the file system.
*
*  Additional information
*    Bit 0-4:   2-second count (0-29)
*    Bit 5-10:  Minutes (0-59)
*    Bit 11-15: Hours (0-23)
*    Bit 16-20: Day of month (1-31)
*    Bit 21-24: Month of year (1-12)
*    Bit 25-31: Count of years from 1980 (0-127)
*/
U32 FS_X_GetTimeDate(void) {
  U32 r;
  U16 Sec, Min, Hour;
  U16 Day, Month, Year;

  Sec   = 0;        // 0 based.  Valid range: 0..59
  Min   = 0;        // 0 based.  Valid range: 0..59
  Hour  = 0;        // 0 based.  Valid range: 0..23
  Day   = 1;        // 1 based.    Means that 1 is 1. Valid range is 1..31 (depending on month)
  Month = 1;        // 1 based.    Means that January is 1. Valid range is 1..12.
  Year  = 0;        // 1980 based. Means that 2007 would be 27.
  r   = Sec / 2 + (Min << 5) + (Hour  << 11);
  r  |= (U32)(Day + (Month << 5) + (Year  << 9)) << 16;
  return r;
}

/*************************** End of file ****************************/