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mbed-os/targets/TARGET_NUVOTON/TARGET_M2351/device/StdDriver/m2351_sdh.c

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/**************************************************************************//**
* @file SDH.c
* @version V1.00
* @brief M2351 SDH driver source file
*
* @note
* @copyright (C) 2016 Nuvoton Technology Corp. All rights reserved.
*****************************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "NuMicro.h"
#if defined (__ICCARM__)
# pragma diag_suppress=Pm073, Pm143 /* Misra C 2004 rule 14.7 */
#endif
/** @addtogroup Standard_Driver Standard Driver
@{
*/
/** @addtogroup SDH_Driver SDH Driver
@{
*/
/** @addtogroup SDH_EXPORTED_FUNCTIONS SDH Exported Functions
@{
*/
#define SDH_BLOCK_SIZE 512UL
/* #define DEBUG_PRINTF printf */
#define DEBUG_PRINTF(...)
/** @cond HIDDEN_SYMBOLS */
/* global variables */
/* For response R3 (such as ACMD41, CRC-7 is invalid; but SD controller will still */
/* calculate CRC-7 and get an error result, software should ignore this error and clear SDISR [CRC_IF] flag */
/* _sd_uR3_CMD is the flag for it. 1 means software should ignore CRC-7 error */
uint8_t g_u8R3Flag = 0UL;
uint8_t volatile g_u8SDDataReadyFlag = (uint8_t)FALSE;
static uint32_t _SDH_uR7_CMD = 0UL;
static uint32_t _SDH_ReferenceClock;
#if defined ( __ICCARM__ ) /*!< IAR Compiler */
#pragma data_alignment = 4
static uint8_t _SDH_ucSDHCBuffer[512];
#else
static __attribute__((aligned)) uint8_t _SDH_ucSDHCBuffer[512];
#endif
/* Declare these functions here to avoid MISRA C 2004 rule 8.1 error */
void SDH_CheckRB(SDH_T *sdh);
uint32_t SDH_SDCommand(SDH_T *sdh, uint32_t u32Cmd, uint32_t u32Arg);
uint32_t SDH_SDCmdAndRsp(SDH_T *sdh, uint32_t u32Cmd, uint32_t u32Arg, uint32_t u32TickCount);
uint32_t SDH_Swap32(uint32_t u32Val);
uint32_t SDH_SDCmdAndRsp2(SDH_T *sdh, uint32_t u32Cmd, uint32_t u32Arg, uint32_t pu32R2ptr[]);
uint32_t SDH_SDCmdAndRspDataIn(SDH_T *sdh, uint32_t u32Cmd, uint32_t u32Arg);
void SDH_Set_clock(SDH_T *sdh, uint32_t u32SDClockKhz);
uint32_t SDH_CardDetection(SDH_T *sdh);
uint32_t SDH_Init(SDH_T *sdh);
uint32_t SDH_SwitchToHighSpeed(SDH_T *sdh, SDH_INFO_T *pSD);
uint32_t SDH_SelectCardType(SDH_T *sdh);
void SDH_Get_SD_info(SDH_T *sdh);
int SDH_ok = 0;
SDH_INFO_T SD0;
void SDH_CheckRB(SDH_T *sdh)
{
while(1)
{
sdh->CTL |= SDH_CTL_CLK8OEN_Msk;
while(sdh->CTL & SDH_CTL_CLK8OEN_Msk) {}
if(sdh->INTSTS & SDH_INTSTS_DAT0STS_Msk)
{
break;
}
}
}
uint32_t SDH_SDCommand(SDH_T *sdh, uint32_t u32Cmd, uint32_t u32Arg)
{
SDH_INFO_T *pSD;
volatile uint32_t u32Status = Successful;
/* M2351 is only support SDH0 */
pSD = &SD0;
sdh->CMDARG = u32Arg;
sdh->CTL = (sdh->CTL & (~SDH_CTL_CMDCODE_Msk)) | (u32Cmd << 8) | (SDH_CTL_COEN_Msk);
while(sdh->CTL & SDH_CTL_COEN_Msk)
{
if(pSD->IsCardInsert == (uint32_t)FALSE)
{
u32Status = SDH_NO_SD_CARD;
}
}
return u32Status;
}
uint32_t SDH_SDCmdAndRsp(SDH_T *sdh, uint32_t u32Cmd, uint32_t u32Arg, uint32_t u32TickCount)
{
SDH_INFO_T *pSD;
/* M2351 is only support SDH0 */
pSD = &SD0;
sdh->CMDARG = u32Arg;
sdh->CTL = (sdh->CTL & (~SDH_CTL_CMDCODE_Msk)) | (u32Cmd << 8) | (SDH_CTL_COEN_Msk | SDH_CTL_RIEN_Msk);
if(u32TickCount > 0UL)
{
while(sdh->CTL & SDH_CTL_RIEN_Msk)
{
if(u32TickCount-- == 0UL)
{
sdh->CTL |= SDH_CTL_CTLRST_Msk; /* reset SD engine */
return 2UL;
}
if(pSD->IsCardInsert == (uint8_t)FALSE)
{
return SDH_NO_SD_CARD;
}
}
}
else
{
while(sdh->CTL & SDH_CTL_RIEN_Msk)
{
if(pSD->IsCardInsert == (uint8_t)FALSE)
{
return SDH_NO_SD_CARD;
}
}
}
if(_SDH_uR7_CMD)
{
if((sdh->RESP1 & 0xffUL) != 0x55UL)
{
if((sdh->RESP0 & 0xfUL) != 0x01UL)
{
_SDH_uR7_CMD = 0UL;
return SDH_CMD8_ERROR;
}
}
}
if(!g_u8R3Flag)
{
if(sdh->INTSTS & SDH_INTSTS_CRC7_Msk) /* check CRC7 */
{
return Successful;
}
else
{
return SDH_CRC7_ERROR;
}
}
else /* ignore CRC error for R3 case */
{
g_u8R3Flag = 0UL;
sdh->INTSTS = SDH_INTSTS_CRCIF_Msk;
return Successful;
}
}
uint32_t SDH_Swap32(uint32_t u32Val)
{
uint32_t u32Buf;
u32Buf = u32Val;
u32Val <<= 24;
u32Val |= (u32Buf << 8) & 0xff0000UL;
u32Val |= (u32Buf >> 8) & 0xff00UL;
u32Val |= (u32Buf >> 24) & 0xffUL;
return u32Buf;
}
/* Get 16 bytes CID or CSD */
uint32_t SDH_SDCmdAndRsp2(SDH_T *sdh, uint32_t u32Cmd, uint32_t u32Arg, uint32_t pu32R2ptr[])
{
uint32_t i;
uint32_t tmpBuf[5];
SDH_INFO_T *pSD;
/* M2351 is only support SDH0 */
pSD = &SD0;
sdh->CMDARG = u32Arg;
sdh->CTL = (sdh->CTL & (~SDH_CTL_CMDCODE_Msk)) | (u32Cmd << 8) | (SDH_CTL_COEN_Msk | SDH_CTL_R2EN_Msk);
while(sdh->CTL & SDH_CTL_R2EN_Msk)
{
if(pSD->IsCardInsert == (uint8_t)FALSE)
{
return SDH_NO_SD_CARD;
}
}
if(sdh->INTSTS & SDH_INTSTS_CRC7_Msk)
{
for(i = 0UL; i < 5UL; i++)
{
tmpBuf[i] = SDH_Swap32(sdh->FB[i]);
}
for(i = 0UL; i < 4UL; i++)
{
pu32R2ptr[i] = ((tmpBuf[i] & 0x00ffffffUL) << 8) | ((tmpBuf[i + 1UL] & 0xff000000UL) >> 24);
}
return Successful;
}
else
{
return SDH_CRC7_ERROR;
}
}
uint32_t SDH_SDCmdAndRspDataIn(SDH_T *sdh, uint32_t u32Cmd, uint32_t u32Arg)
{
SDH_INFO_T *pSD;
/* M2351 is only support SDH0 */
pSD = &SD0;
sdh->CMDARG = u32Arg;
sdh->CTL = (sdh->CTL & (~SDH_CTL_CMDCODE_Msk)) | ((uint32_t)u32Cmd << 8) |
(SDH_CTL_COEN_Msk | SDH_CTL_RIEN_Msk | SDH_CTL_DIEN_Msk);
while(sdh->CTL & SDH_CTL_RIEN_Msk)
{
if(pSD->IsCardInsert == (uint32_t)FALSE)
{
return SDH_NO_SD_CARD;
}
}
while(sdh->CTL & SDH_CTL_DIEN_Msk)
{
if(pSD->IsCardInsert == (uint32_t)FALSE)
{
return SDH_NO_SD_CARD;
}
}
if(!(sdh->INTSTS & SDH_INTSTS_CRC7_Msk)) /* check CRC7 */
{
return SDH_CRC7_ERROR;
}
if(!(sdh->INTSTS & SDH_INTSTS_CRC16_Msk)) /* check CRC16 */
{
return SDH_CRC16_ERROR;
}
return Successful;
}
/* there are 8 bits for divider0, maximum is 256 */
#define SDH_CLK_DIV0_MAX 256UL
void SDH_Set_clock(SDH_T *sdh, uint32_t u32SDClockKhz)
{
if(!(__PC() & (1UL << 28)))
{
uint32_t u32Rate, u32Div1;
static uint32_t u32SDClkSrc = 0UL;
/* M2351 is only support SDH0 */
u32SDClkSrc = (CLK->CLKSEL0 & CLK_CLKSEL0_SDH0SEL_Msk);
if(u32SDClkSrc == CLK_CLKSEL0_SDH0SEL_HXT)
{
_SDH_ReferenceClock = (CLK_GetHXTFreq() / 1000UL);
}
else if(u32SDClkSrc == CLK_CLKSEL0_SDH0SEL_HIRC)
{
_SDH_ReferenceClock = (__HIRC / 1000UL);
}
else if(u32SDClkSrc == CLK_CLKSEL0_SDH0SEL_PLL)
{
_SDH_ReferenceClock = (CLK_GetPLLClockFreq() / 1000UL);
}
else if(u32SDClkSrc == CLK_CLKSEL0_SDH0SEL_HCLK)
{
_SDH_ReferenceClock = (CLK_GetHCLKFreq() / 1000UL);
}
if(u32SDClockKhz >= 50000UL)
{
u32SDClockKhz = 50000UL;
}
u32Rate = _SDH_ReferenceClock / u32SDClockKhz;
/* choose slower clock if system clock cannot divisible by wanted clock */
if(_SDH_ReferenceClock % u32SDClockKhz != 0UL)
{
u32Rate++;
}
if(u32Rate >= SDH_CLK_DIV0_MAX)
{
u32Rate = SDH_CLK_DIV0_MAX;
}
/* --- calculate the second divider CLKDIV0[SDHOST_N] */
if(u32Rate == 0UL)
{
u32Div1 = 0UL;
}
else
{
u32Div1 = ((u32Rate - 1UL) & 0xFFUL);
}
/* --- setup register */
/* M2351 is only support SDH0 */
CLK->CLKDIV0 &= ~CLK_CLKDIV0_SDH0DIV_Msk;
CLK->CLKDIV0 |= (u32Div1 << CLK_CLKDIV0_SDH0DIV_Pos);
}
}
uint32_t SDH_CardDetection(SDH_T *sdh)
{
uint32_t i, u32Status = (uint32_t)TRUE;
SDH_INFO_T *pSD;
/* M2351 is only support SDH0 */
pSD = &SD0;
if(sdh->INTEN & SDH_INTEN_CDSRC_Msk) /* Card detect pin from GPIO */
{
if(sdh->INTSTS & SDH_INTSTS_CDSTS_Msk) /* Card remove */
{
pSD->IsCardInsert = (uint8_t)FALSE;
u32Status = (uint32_t)FALSE;
}
else
{
pSD->IsCardInsert = (uint8_t)TRUE;
}
}
else if(!(sdh->INTEN & SDH_INTEN_CDSRC_Msk))
{
sdh->CTL |= SDH_CTL_CLKKEEP_Msk;
for(i = 0UL; i < 5000UL; i++) {}
if(sdh->INTSTS & SDH_INTSTS_CDSTS_Msk) /* Card insert */
{
pSD->IsCardInsert = (uint8_t)TRUE;
}
else
{
pSD->IsCardInsert = (uint8_t)FALSE;
u32Status = (uint32_t)FALSE;
}
sdh->CTL &= ~SDH_CTL_CLKKEEP_Msk;
}
return u32Status;
}
/* Initial */
uint32_t SDH_Init(SDH_T *sdh)
{
uint32_t volatile i, u32Status;
uint32_t u32Resp;
uint32_t au32CIDBuffer[4];
uint32_t volatile u32CmdTimeOut;
SDH_INFO_T *pSD;
/* M2351 is only support SDH0 */
pSD = &SD0;
/* set the clock to 300KHz */
SDH_Set_clock(sdh, 300UL);
/* power ON 74 clock */
sdh->CTL |= SDH_CTL_CLK74OEN_Msk;
while(sdh->CTL & SDH_CTL_CLK74OEN_Msk)
{
if(pSD->IsCardInsert == (uint8_t)FALSE)
{
return SDH_NO_SD_CARD;
}
}
SDH_SDCommand(sdh, 0UL, 0UL); /* reset all cards */
for(i = 0x1000UL; i > 0UL; i--) {}
/* initial SDHC */
_SDH_uR7_CMD = 1UL;
u32CmdTimeOut = 0xFFFFFUL;
i = SDH_SDCmdAndRsp(sdh, 8UL, 0x00000155UL, u32CmdTimeOut);
if(i == Successful)
{
/* SD 2.0 */
SDH_SDCmdAndRsp(sdh, 55UL, 0x00UL, u32CmdTimeOut);
g_u8R3Flag = 1UL;
SDH_SDCmdAndRsp(sdh, 41UL, 0x40ff8000UL, u32CmdTimeOut); /* 2.7v-3.6v */
u32Resp = sdh->RESP0;
while(!(u32Resp & 0x00800000UL)) /* check if card is ready */
{
SDH_SDCmdAndRsp(sdh, 55UL, 0x00UL, u32CmdTimeOut);
g_u8R3Flag = 1UL;
SDH_SDCmdAndRsp(sdh, 41UL, 0x40ff8000UL, u32CmdTimeOut); /* 3.0v-3.4v */
u32Resp = sdh->RESP0;
}
if(u32Resp & 0x00400000UL)
{
pSD->CardType = SDH_TYPE_SD_HIGH;
}
else
{
pSD->CardType = SDH_TYPE_SD_LOW;
}
}
else
{
/* SD 1.1 */
SDH_SDCommand(sdh, 0UL, 0UL); /* reset all cards */
for(i = 0x100UL; i > 0UL; i--) {}
i = SDH_SDCmdAndRsp(sdh, 55UL, 0x00UL, u32CmdTimeOut);
if(i == 2UL) /* MMC memory */
{
SDH_SDCommand(sdh, 0UL, 0UL); /* reset */
for(i = 0x100UL; i > 0UL; i--) {}
g_u8R3Flag = 1UL;
if(SDH_SDCmdAndRsp(sdh, 1UL, 0x40ff8000UL, u32CmdTimeOut) != 2UL) /* eMMC memory */
{
u32Resp = sdh->RESP0;
while(!(u32Resp & 0x00800000UL)) /* check if card is ready */
{
g_u8R3Flag = 1UL;
SDH_SDCmdAndRsp(sdh, 1UL, 0x40ff8000UL, u32CmdTimeOut); /* high voltage */
u32Resp = sdh->RESP0;
}
if(u32Resp & 0x00400000UL)
{
pSD->CardType = SDH_TYPE_EMMC;
}
else
{
pSD->CardType = SDH_TYPE_MMC;
}
}
else
{
pSD->CardType = SDH_TYPE_UNKNOWN;
return SDH_ERR_DEVICE;
}
}
else if(i == 0UL) /* SD Memory */
{
g_u8R3Flag = 1UL;
SDH_SDCmdAndRsp(sdh, 41UL, 0x00ff8000UL, u32CmdTimeOut); /* 3.0v-3.4v */
u32Resp = sdh->RESP0;
while(!(u32Resp & 0x00800000UL)) /* check if card is ready */
{
SDH_SDCmdAndRsp(sdh, 55UL, 0x00UL, u32CmdTimeOut);
g_u8R3Flag = 1UL;
SDH_SDCmdAndRsp(sdh, 41UL, 0x00ff8000UL, u32CmdTimeOut); /* 3.0v-3.4v */
u32Resp = sdh->RESP0;
}
pSD->CardType = SDH_TYPE_SD_LOW;
}
else
{
pSD->CardType = SDH_TYPE_UNKNOWN;
return SDH_INIT_ERROR;
}
}
/* CMD2, CMD3 */
if(pSD->CardType != SDH_TYPE_UNKNOWN)
{
SDH_SDCmdAndRsp2(sdh, 2UL, 0x00UL, au32CIDBuffer);
if((pSD->CardType == SDH_TYPE_MMC) || (pSD->CardType == SDH_TYPE_EMMC))
{
if((u32Status = SDH_SDCmdAndRsp(sdh, 3UL, 0x10000UL, 0UL)) != Successful) /* set RCA */
{
return u32Status;
}
pSD->RCA = 0x10000UL;
}
else
{
if((u32Status = SDH_SDCmdAndRsp(sdh, 3UL, 0x00UL, 0UL)) != Successful) /* get RCA */
{
return u32Status;
}
else
{
pSD->RCA = (sdh->RESP0 << 8) & 0xffff0000UL;
}
}
}
return Successful;
}
uint32_t SDH_SwitchToHighSpeed(SDH_T *sdh, SDH_INFO_T *pSD)
{
uint32_t volatile u32Status = 0UL;
uint16_t u16CurrentComsumption, u16BusyStatus0;
sdh->DMASA = (uint32_t)_SDH_ucSDHCBuffer; /* set DMA transfer starting address */
sdh->BLEN = 63UL; /* 512 bit */
if((u32Status = SDH_SDCmdAndRspDataIn(sdh, 6UL, 0x00ffff01UL)) != Successful)
{
return Fail;
}
u16CurrentComsumption = (uint16_t)_SDH_ucSDHCBuffer[0] << 8;
u16CurrentComsumption |= (uint16_t)_SDH_ucSDHCBuffer[1];
if(!u16CurrentComsumption)
{
return Fail;
}
u16BusyStatus0 = (uint16_t)_SDH_ucSDHCBuffer[28] << 8;
u16BusyStatus0 |= (uint16_t)_SDH_ucSDHCBuffer[29];
if(!u16BusyStatus0) /* function ready */
{
sdh->DMASA = (uint32_t)_SDH_ucSDHCBuffer; /* set DMA transfer starting address */
sdh->BLEN = 63UL; /* 512 bit */
if((u32Status = SDH_SDCmdAndRspDataIn(sdh, 6UL, 0x80ffff01UL)) != Successful)
{
return Fail;
}
/* function change timing: 8 clocks */
sdh->CTL |= SDH_CTL_CLK8OEN_Msk;
while(sdh->CTL & SDH_CTL_CLK8OEN_Msk) {}
u16CurrentComsumption = (uint16_t)_SDH_ucSDHCBuffer[0] << 8;
u16CurrentComsumption |= (uint16_t)_SDH_ucSDHCBuffer[1];
if(!u16CurrentComsumption)
{
return Fail;
}
return Successful;
}
else
{
return Fail;
}
}
uint32_t SDH_SelectCardType(SDH_T *sdh)
{
uint32_t volatile u32Status = 0UL;
uint32_t u32Param;
SDH_INFO_T *pSD;
/* M2351 is only support SDH0 */
pSD = &SD0;
if((u32Status = SDH_SDCmdAndRsp(sdh, 7UL, pSD->RCA, 0UL)) != Successful)
{
return u32Status;
}
SDH_CheckRB(sdh);
/* if SD card set 4bit */
if(pSD->CardType == SDH_TYPE_SD_HIGH)
{
sdh->DMASA = (uint32_t)_SDH_ucSDHCBuffer; /* set DMA transfer starting address */
sdh->BLEN = 0x07UL; /* 64 bit */
if((u32Status = SDH_SDCmdAndRsp(sdh, 55UL, pSD->RCA, 0UL)) != Successful)
{
return u32Status;
}
if((u32Status = SDH_SDCmdAndRspDataIn(sdh, 51UL, 0x00UL)) != Successful)
{
return u32Status;
}
if((_SDH_ucSDHCBuffer[0] & 0xfUL) == 0xfUL)
{
u32Status = SDH_SwitchToHighSpeed(sdh, pSD);
if(u32Status == Successful)
{
/* divider */
SDH_Set_clock(sdh, SDHC_FREQ);
}
}
if((u32Status = SDH_SDCmdAndRsp(sdh, 55UL, pSD->RCA, 0UL)) != Successful)
{
return u32Status;
}
if((u32Status = SDH_SDCmdAndRsp(sdh, 6UL, 0x02UL, 0UL)) != Successful) /* set bus width */
{
return u32Status;
}
sdh->CTL |= SDH_CTL_DBW_Msk;
}
else if(pSD->CardType == SDH_TYPE_SD_LOW)
{
sdh->DMASA = (uint32_t) _SDH_ucSDHCBuffer; /* set DMA transfer starting address */
sdh->BLEN = 0x07UL; /* 64 bit */
if((u32Status = SDH_SDCmdAndRsp(sdh, 55UL, pSD->RCA, 0UL)) != Successful)
{
return u32Status;
}
if((u32Status = SDH_SDCmdAndRspDataIn(sdh, 51UL, 0x00UL)) != Successful)
{
return u32Status;
}
/* set data bus width. ACMD6 for SD card, SDCR_DBW for host. */
if((u32Status = SDH_SDCmdAndRsp(sdh, 55UL, pSD->RCA, 0UL)) != Successful)
{
return u32Status;
}
if((u32Status = SDH_SDCmdAndRsp(sdh, 6UL, 0x02UL, 0UL)) != Successful) /* set bus width */
{
return u32Status;
}
sdh->CTL |= SDH_CTL_DBW_Msk;
}
else if((pSD->CardType == SDH_TYPE_MMC) || (pSD->CardType == SDH_TYPE_EMMC))
{
if(pSD->CardType == SDH_TYPE_MMC)
{
sdh->CTL &= ~SDH_CTL_DBW_Msk;
}
/* --- sent CMD6 to MMC card to set bus width to 4 bits mode */
/* set CMD6 argument Access field to 3, Index to 183, Value to 1 (4-bit mode) */
u32Param = (3UL << 24) | (183UL << 16) | (1UL << 8);
if((u32Status = SDH_SDCmdAndRsp(sdh, 6UL, u32Param, 0UL)) != Successful)
{
return u32Status;
}
SDH_CheckRB(sdh);
sdh->CTL |= SDH_CTL_DBW_Msk; /* set bus width to 4-bit mode for SD host controller */
}
if((u32Status = SDH_SDCmdAndRsp(sdh, 16UL, SDH_BLOCK_SIZE, 0UL)) != Successful) /* set block length */
{
return u32Status;
}
sdh->BLEN = SDH_BLOCK_SIZE - 1UL; /* set the block size */
SDH_SDCommand(sdh, 7UL, 0UL);
sdh->CTL |= SDH_CTL_CLK8OEN_Msk;
while(sdh->CTL & SDH_CTL_CLK8OEN_Msk) {}
sdh->INTEN |= SDH_INTEN_BLKDIEN_Msk;
return Successful;
}
void SDH_Get_SD_info(SDH_T *sdh)
{
unsigned int R_LEN, C_Size, MULT, size;
unsigned int Buffer[4];
SDH_INFO_T *pSD;
/* M2351 is only support SDH0 */
pSD = &SD0;
SDH_SDCmdAndRsp2(sdh, 9UL, pSD->RCA, Buffer);
if((pSD->CardType == SDH_TYPE_MMC) || (pSD->CardType == SDH_TYPE_EMMC))
{
/* for MMC/eMMC card */
if((Buffer[0] & 0xc0000000UL) == 0xc0000000UL)
{
/* CSD_STRUCTURE [127:126] is 3 */
/* CSD version depend on EXT_CSD register in eMMC v4.4 for card size > 2GB */
SDH_SDCmdAndRsp(sdh, 7UL, pSD->RCA, 0UL);
sdh->DMASA = (uint32_t)_SDH_ucSDHCBuffer; /* set DMA transfer starting address */
sdh->BLEN = 511UL; /* read 512 bytes for EXT_CSD */
if(SDH_SDCmdAndRspDataIn(sdh, 8UL, 0x00UL) != Successful)
{
return;
}
SDH_SDCommand(sdh, 7UL, 0UL);
sdh->CTL |= SDH_CTL_CLK8OEN_Msk;
while(sdh->CTL & SDH_CTL_CLK8OEN_Msk) {}
pSD->totalSectorN = (uint32_t)_SDH_ucSDHCBuffer[215] << 24;
pSD->totalSectorN |= (uint32_t)_SDH_ucSDHCBuffer[214] << 16;
pSD->totalSectorN |= (uint32_t)_SDH_ucSDHCBuffer[213] << 8;
pSD->totalSectorN |= (uint32_t)_SDH_ucSDHCBuffer[212];
pSD->diskSize = pSD->totalSectorN / 2UL;
}
else
{
/* CSD version v1.0/1.1/1.2 in eMMC v4.4 spec for card size <= 2GB */
R_LEN = (Buffer[1] & 0x000f0000UL) >> 16;
C_Size = ((Buffer[1] & 0x000003ffUL) << 2) | ((Buffer[2] & 0xc0000000UL) >> 30);
MULT = (Buffer[2] & 0x00038000UL) >> 15;
size = (C_Size + 1UL) * (1UL << (MULT + 2UL)) * (1UL << R_LEN);
pSD->diskSize = size / 1024UL;
pSD->totalSectorN = size / 512UL;
}
}
else
{
if(Buffer[0] & 0xc0000000UL)
{
C_Size = ((Buffer[1] & 0x0000003fUL) << 16) | ((Buffer[2] & 0xffff0000UL) >> 16);
size = (C_Size + 1UL) * 512UL; /* Kbytes */
pSD->diskSize = size;
pSD->totalSectorN = size << 1;
}
else
{
R_LEN = (Buffer[1] & 0x000f0000UL) >> 16;
C_Size = ((Buffer[1] & 0x000003ffUL) << 2) | ((Buffer[2] & 0xc0000000UL) >> 30);
MULT = (Buffer[2] & 0x00038000UL) >> 15;
size = (C_Size + 1UL) * (1UL << (MULT + 2UL)) * (1UL << R_LEN);
pSD->diskSize = size / 1024UL;
pSD->totalSectorN = size / 512UL;
}
}
pSD->sectorSize = (int)512UL;
}
/** @endcond HIDDEN_SYMBOLS */
/**
* @brief This function use to reset SD function and select card detection source and pin.
*
* @param[in] sdh The pointer of the specified SDH module.
* @param[in] u32CardDetSrc Select card detection pin from GPIO or DAT3 pin. ( \ref CardDetect_From_GPIO / \ref CardDetect_From_DAT3)
*
* @return None
*/
void SDH_Open(SDH_T *sdh, uint32_t u32CardDetSrc)
{
/* enable DMAC */
sdh->DMACTL = SDH_DMACTL_DMARST_Msk;
while(sdh->DMACTL & SDH_DMACTL_DMARST_Msk) {}
sdh->DMACTL = SDH_DMACTL_DMAEN_Msk;
/* Reset FMI */
sdh->GCTL = SDH_GCTL_GCTLRST_Msk | SDH_GCTL_SDEN_Msk; /* Start reset FMI controller. */
while(sdh->GCTL & SDH_GCTL_GCTLRST_Msk) {}
memset(&SD0, 0, sizeof(SDH_INFO_T));
/* enable SD */
sdh->GCTL = SDH_GCTL_SDEN_Msk;
if(u32CardDetSrc & CardDetect_From_DAT3)
{
sdh->INTEN &= ~SDH_INTEN_CDSRC_Msk;
}
else
{
sdh->INTEN |= SDH_INTEN_CDSRC_Msk;
}
sdh->INTEN |= SDH_INTEN_CDIEN_Msk;
sdh->CTL |= SDH_CTL_CTLRST_Msk; /* SD software reset */
while(sdh->CTL & SDH_CTL_CTLRST_Msk) {}
}
/**
* @brief This function use to initial SD card.
*
* @param[in] sdh The pointer of the specified SDH module.
*
* @return None
*
* @details This function is used to initial SD card.
* SD initial state needs 400KHz clock output, driver will use HIRC for SD initial clock source.
* And then switch back to the user's setting.
*/
uint32_t SDH_Probe(SDH_T *sdh)
{
uint32_t u32Val;
/* Disable FMI/SD host interrupt */
sdh->GINTEN = 0UL;
sdh->CTL &= ~SDH_CTL_SDNWR_Msk;
sdh->CTL |= 0x09UL << SDH_CTL_SDNWR_Pos; /* set SDNWR = 9 */
sdh->CTL &= ~SDH_CTL_BLKCNT_Msk;
sdh->CTL |= 0x01UL << SDH_CTL_BLKCNT_Pos; /* set BLKCNT = 1 */
sdh->CTL &= ~SDH_CTL_DBW_Msk; /* SD 1-bit data bus */
if(!(SDH_CardDetection(sdh)))
{
return SDH_NO_SD_CARD;
}
if((u32Val = SDH_Init(sdh)) != 0UL)
{
return u32Val;
}
/* divider */
if(SD0.CardType == SDH_TYPE_MMC)
{
SDH_Set_clock(sdh, MMC_FREQ);
}
else
{
SDH_Set_clock(sdh, SD_FREQ);
}
SDH_Get_SD_info(sdh);
if((u32Val = SDH_SelectCardType(sdh)) != 0UL)
{
return u32Val;
}
SDH_ok = 1;
return 0UL;
}
/**
* @brief This function use to read data from SD card.
*
* @param[in] sdh The pointer of the specified SDH module.
* @param[out] pu8BufAddr The buffer to receive the data from SD card.
* @param[in] u32StartSec The start read sector address.
* @param[in] u32SecCount The the read sector number of data
*
* @return None
*/
uint32_t SDH_Read(SDH_T *sdh, uint8_t *pu8BufAddr, uint32_t u32StartSec, uint32_t u32SecCount)
{
uint32_t volatile u32IsSendCmd = (uint32_t)FALSE, u32Buf;
uint32_t volatile u32Reg;
uint32_t volatile i, loop, u32Status;
uint32_t u32BlkSize = SDH_BLOCK_SIZE;
SDH_INFO_T *pSD;
/* M2351 is only support SDH0 */
pSD = &SD0;
/* --- check input parameters */
if(u32SecCount == 0UL)
{
return SDH_SELECT_ERROR;
}
if((u32Status = SDH_SDCmdAndRsp(sdh, 7UL, pSD->RCA, 0UL)) != Successful)
{
return u32Status;
}
SDH_CheckRB(sdh);
sdh->BLEN = u32BlkSize - 1UL; /* the actual byte count is equal to (SDBLEN+1) */
if((pSD->CardType == SDH_TYPE_SD_HIGH) || (pSD->CardType == SDH_TYPE_EMMC))
{
sdh->CMDARG = u32StartSec;
}
else
{
sdh->CMDARG = u32StartSec * u32BlkSize;
}
sdh->DMASA = (uint32_t)pu8BufAddr;
loop = u32SecCount / 255UL;
while(loop > 0UL)
{
g_u8SDDataReadyFlag = (uint8_t)FALSE;
u32Reg = sdh->CTL & ~SDH_CTL_CMDCODE_Msk;
u32Reg = u32Reg | 0xff0000UL; /* set BLK_CNT to 255 */
if(u32IsSendCmd == (uint32_t)FALSE)
{
sdh->CTL = u32Reg | (18UL << 8) | (SDH_CTL_COEN_Msk | SDH_CTL_RIEN_Msk | SDH_CTL_DIEN_Msk);
u32IsSendCmd = (uint32_t)TRUE;
}
else
{
sdh->CTL = u32Reg | SDH_CTL_DIEN_Msk;
}
while(!g_u8SDDataReadyFlag)
{
if(g_u8SDDataReadyFlag)
{
break;
}
if(pSD->IsCardInsert == (uint8_t)FALSE)
{
return SDH_NO_SD_CARD;
}
}
if(!(sdh->INTSTS & SDH_INTSTS_CRC7_Msk)) /* check CRC7 */
{
return SDH_CRC7_ERROR;
}
if(!(sdh->INTSTS & SDH_INTSTS_CRC16_Msk)) /* check CRC16 */
{
return SDH_CRC16_ERROR;
}
loop--;
}
loop = u32SecCount % 255UL;
if(loop != 0UL)
{
uint32_t u32RegTmp;
g_u8SDDataReadyFlag = (uint8_t)FALSE;
u32Reg = sdh->CTL & (~SDH_CTL_CMDCODE_Msk);
u32Reg = u32Reg & (~SDH_CTL_BLKCNT_Msk);
u32RegTmp = (loop << 16);
u32Reg |= u32RegTmp; /* setup SDCR_BLKCNT */
if(u32IsSendCmd == (uint32_t)FALSE)
{
sdh->CTL = u32Reg | (18UL << 8) | (SDH_CTL_COEN_Msk | SDH_CTL_RIEN_Msk | SDH_CTL_DIEN_Msk);
u32IsSendCmd = (uint32_t)TRUE;
}
else
{
sdh->CTL = u32Reg | SDH_CTL_DIEN_Msk;
}
while(!g_u8SDDataReadyFlag)
{
if(pSD->IsCardInsert == (uint8_t)FALSE)
{
return SDH_NO_SD_CARD;
}
}
if(!(sdh->INTSTS & SDH_INTSTS_CRC7_Msk)) /* check CRC7 */
{
return SDH_CRC7_ERROR;
}
if(!(sdh->INTSTS & SDH_INTSTS_CRC16_Msk)) /* check CRC16 */
{
return SDH_CRC16_ERROR;
}
}
if(SDH_SDCmdAndRsp(sdh, 12UL, 0UL, 0UL)) /* stop command */
{
return SDH_CRC7_ERROR;
}
SDH_CheckRB(sdh);
SDH_SDCommand(sdh, 7UL, 0UL);
sdh->CTL |= SDH_CTL_CLK8OEN_Msk;
while(sdh->CTL & SDH_CTL_CLK8OEN_Msk) {}
return Successful;
}
/**
* @brief This function use to write data to SD card.
*
* @param[in] sdh The pointer of the specified SDH module.
* @param[in] pu8BufAddr The buffer to send the data to SD card.
* @param[in] u32StartSec The start write sector address.
* @param[in] u32SecCount The the write sector number of data.
*
* @return \ref SDH_SELECT_ERROR : u32SecCount is zero. \n
* \ref SDH_NO_SD_CARD : SD card be removed. \n
* \ref SDH_CRC_ERROR : CRC error happen. \n
* \ref SDH_CRC7_ERROR : CRC7 error happen. \n
* \ref Successful : Write data to SD card success.
*/
uint32_t SDH_Write(SDH_T *sdh, uint8_t *pu8BufAddr, uint32_t u32StartSec, uint32_t u32SecCount)
{
uint32_t volatile u32IsSendCmd = (uint32_t)FALSE;
uint32_t volatile u32Reg;
uint32_t volatile i, loop, u32Status;
SDH_INFO_T *pSD;
/* M2351 is only support SDH0 */
pSD = &SD0;
/* --- check input parameters */
if(u32SecCount == 0UL)
{
return SDH_SELECT_ERROR;
}
if((u32Status = SDH_SDCmdAndRsp(sdh, 7UL, pSD->RCA, 0UL)) != Successful)
{
return u32Status;
}
SDH_CheckRB(sdh);
/* According to SD Spec v2.0, the write CMD block size MUST be 512, and the start address MUST be 512*n. */
sdh->BLEN = SDH_BLOCK_SIZE - 1UL; /* set the block size */
if((pSD->CardType == SDH_TYPE_SD_HIGH) || (pSD->CardType == SDH_TYPE_EMMC))
{
sdh->CMDARG = u32StartSec;
}
else
{
sdh->CMDARG = u32StartSec * SDH_BLOCK_SIZE; /* set start address for SD CMD */
}
sdh->DMASA = (uint32_t)pu8BufAddr;
loop = u32SecCount / 255UL; /* the maximum block count is 0xFF=255 for register SDCR[BLK_CNT] */
while(loop > 0UL)
{
g_u8SDDataReadyFlag = (uint8_t)FALSE;
u32Reg = sdh->CTL & 0xff00c080UL;
u32Reg = u32Reg | 0xff0000UL; /* set BLK_CNT to 0xFF=255 */
if(!u32IsSendCmd)
{
sdh->CTL = u32Reg | (25UL << 8) | (SDH_CTL_COEN_Msk | SDH_CTL_RIEN_Msk | SDH_CTL_DOEN_Msk);
u32IsSendCmd = (uint32_t)TRUE;
}
else
{
sdh->CTL = u32Reg | SDH_CTL_DOEN_Msk;
}
while(!g_u8SDDataReadyFlag)
{
if(pSD->IsCardInsert == (uint8_t)FALSE)
{
return SDH_NO_SD_CARD;
}
}
if((sdh->INTSTS & SDH_INTSTS_CRCIF_Msk) != 0UL) /* check CRC */
{
sdh->INTSTS = SDH_INTSTS_CRCIF_Msk;
return SDH_CRC_ERROR;
}
loop--;
}
loop = u32SecCount % 255UL;
if(loop != 0UL)
{
uint32_t u32RegTmp;
g_u8SDDataReadyFlag = (uint8_t)FALSE;
u32RegTmp = (loop << 16);
u32Reg = (sdh->CTL & 0xff00c080UL) | u32RegTmp;
if(!u32IsSendCmd)
{
sdh->CTL = u32Reg | (25UL << 8) | (SDH_CTL_COEN_Msk | SDH_CTL_RIEN_Msk | SDH_CTL_DOEN_Msk);
u32IsSendCmd = (uint32_t)TRUE;
}
else
{
sdh->CTL = u32Reg | SDH_CTL_DOEN_Msk;
}
while(!g_u8SDDataReadyFlag)
{
if(pSD->IsCardInsert == (uint8_t)FALSE)
{
return SDH_NO_SD_CARD;
}
}
if((sdh->INTSTS & SDH_INTSTS_CRCIF_Msk) != 0UL) /* check CRC */
{
sdh->INTSTS = SDH_INTSTS_CRCIF_Msk;
return SDH_CRC_ERROR;
}
}
sdh->INTSTS = SDH_INTSTS_CRCIF_Msk;
if(SDH_SDCmdAndRsp(sdh, 12UL, 0UL, 0UL)) /* stop command */
{
return SDH_CRC7_ERROR;
}
SDH_CheckRB(sdh);
SDH_SDCommand(sdh, 7UL, 0UL);
sdh->CTL |= SDH_CTL_CLK8OEN_Msk;
while(sdh->CTL & SDH_CTL_CLK8OEN_Msk) {}
return Successful;
}
/*@}*/ /* end of group SDH_EXPORTED_FUNCTIONS */
/*@}*/ /* end of group SDH_Driver */
/*@}*/ /* end of group Standard_Driver */
/*** (C) COPYRIGHT 2016 Nuvoton Technology Corp. ***/
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