| /**************************************************************************//** | |
| * @file SDH.c | |
| * @version V1.00 | |
| * @brief M2351 SDH driver source file | |
| * | |
| * @note | |
| * @copyright (C) 2017 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 au32TmpBuf[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++) | |
| { | |
| au32TmpBuf[i] = SDH_Swap32(sdh->FB[i]); | |
| } | |
| for(i = 0UL; i < 4UL; i++) | |
| { | |
| pu32R2ptr[i] = ((au32TmpBuf[i] & 0x00ffffffUL) << 8) | ((au32TmpBuf[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; | |
| } | |
| sdh->DMACTL |= 0x2; | |
| while(sdh->DMACTL & 0x2) {}; | |
| 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) | |
| { | |
| uint32_t u32RLen, u32CSize, u32Mult, u32Size; | |
| uint32_t au32Buffer[4]; | |
| SDH_INFO_T *pSD; | |
| /* M2351 is only support SDH0 */ | |
| pSD = &SD0; | |
| SDH_SDCmdAndRsp2(sdh, 9UL, pSD->RCA, au32Buffer); | |
| if((pSD->CardType == SDH_TYPE_MMC) || (pSD->CardType == SDH_TYPE_EMMC)) | |
| { | |
| /* for MMC/eMMC card */ | |
| if((au32Buffer[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 */ | |
| u32RLen = (au32Buffer[1] & 0x000f0000UL) >> 16; | |
| u32CSize = ((au32Buffer[1] & 0x000003ffUL) << 2) | ((au32Buffer[2] & 0xc0000000UL) >> 30); | |
| u32Mult = (au32Buffer[2] & 0x00038000UL) >> 15; | |
| u32Size = (u32CSize + 1UL) * (1UL << (u32Mult + 2UL)) * (1UL << u32RLen); | |
| pSD->diskSize = u32Size / 1024UL; | |
| pSD->totalSectorN = u32Size / 512UL; | |
| } | |
| } | |
| else | |
| { | |
| if(au32Buffer[0] & 0xc0000000UL) | |
| { | |
| u32CSize = ((au32Buffer[1] & 0x0000003fUL) << 16) | ((au32Buffer[2] & 0xffff0000UL) >> 16); | |
| u32Size = (u32CSize + 1UL) * 512UL; /* Kbytes */ | |
| pSD->diskSize = u32Size; | |
| pSD->totalSectorN = u32Size << 1; | |
| } | |
| else | |
| { | |
| u32RLen = (au32Buffer[1] & 0x000f0000UL) >> 16; | |
| u32CSize = ((au32Buffer[1] & 0x000003ffUL) << 2) | ((au32Buffer[2] & 0xc0000000UL) >> 30); | |
| u32Mult = (au32Buffer[2] & 0x00038000UL) >> 15; | |
| u32Size = (u32CSize + 1UL) * (1UL << (u32Mult + 2UL)) * (1UL << u32RLen); | |
| pSD->diskSize = u32Size / 1024UL; | |
| pSD->totalSectorN = u32Size / 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, u32Loop, 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; | |
| u32Loop = u32SecCount / 255UL; | |
| while(u32Loop > 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; | |
| } | |
| u32Loop--; | |
| } | |
| u32Loop = u32SecCount % 255UL; | |
| if(u32Loop != 0UL) | |
| { | |
| uint32_t u32RegTmp; | |
| g_u8SDDataReadyFlag = (uint8_t)FALSE; | |
| u32Reg = sdh->CTL & (~SDH_CTL_CMDCODE_Msk); | |
| u32Reg = u32Reg & (~SDH_CTL_BLKCNT_Msk); | |
| u32RegTmp = (u32Loop << 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, u32Loop, 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; | |
| u32Loop = u32SecCount / 255UL; /* the maximum block count is 0xFF=255 for register SDCR[BLK_CNT] */ | |
| while(u32Loop > 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; | |
| } | |
| u32Loop--; | |
| } | |
| u32Loop = u32SecCount % 255UL; | |
| if(u32Loop != 0UL) | |
| { | |
| uint32_t u32RegTmp; | |
| g_u8SDDataReadyFlag = (uint8_t)FALSE; | |
| u32RegTmp = (u32Loop << 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 2017 Nuvoton Technology Corp. ***/ | |