Mouse code for the MacroRat
mbed-dev/targets/TARGET_NUVOTON/TARGET_NUC472/device/StdDriver/nuc472_sd.c
- Committer:
- sahilmgandhi
- Date:
- 2017-05-14
- Revision:
- 18:6a4db94011d3
File content as of revision 18:6a4db94011d3:
/**************************************************************************//** * @file SD.c * @version V1.00 * $Revision: 16 $ * $Date: 15/11/26 10:45a $ * @brief NUC472/NUC442 SD driver source file * * @note * Copyright (C) 2013 Nuvoton Technology Corp. All rights reserved. *****************************************************************************/ #include <stdio.h> #include <stdlib.h> #include <string.h> #include "NUC472_442.h" /** @addtogroup NUC472_442_Device_Driver NUC472/NUC442 Device Driver @{ */ /** @addtogroup NUC472_442_SD_Driver SD Driver @{ */ /** @addtogroup NUC472_442_SD_EXPORTED_FUNCTIONS SD Exported Functions @{ */ #define SD_BLOCK_SIZE 512 /// @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 uint32_t _sd_uR3_CMD=0; uint32_t _sd_uR7_CMD=0; uint8_t volatile _sd_SDDataReady = FALSE; uint8_t *_sd_pSDHCBuffer; uint32_t _sd_ReferenceClock; #if defined (__CC_ARM) __align(4096) uint8_t _sd_ucSDHCBuffer[512]; #elif defined ( __ICCARM__ ) /*!< IAR Compiler */ #pragma data_alignment = 4096 uint8_t _sd_ucSDHCBuffer[512]; #elif defined ( __GNUC__ ) uint8_t _sd_ucSDHCBuffer[512] __attribute__((aligned (4096))); #endif int sd0_ok = 0; int sd1_ok = 0; uint8_t pSD0_offset = 0; uint8_t pSD1_offset = 0; DISK_DATA_T SD_DiskInfo0; DISK_DATA_T SD_DiskInfo1; SD_INFO_T SD0; SD_INFO_T SD1; void SD_CheckRB() { while(1) { SD->CTL |= SDH_CTL_CLK8OEN_Msk; while(SD->CTL & SDH_CTL_CLK8OEN_Msk); if (SD->INTSTS & SDH_INTSTS_DAT0STS_Msk) break; } } int SD_SDCommand(SD_INFO_T *pSD, uint8_t ucCmd, uint32_t uArg) { volatile int buf; SD->CMDARG = uArg; buf = (SD->CTL&(~SDH_CTL_CMDCODE_Msk))|(ucCmd << 8)|(SDH_CTL_COEN_Msk); SD->CTL = buf; while(SD->CTL & SDH_CTL_COEN_Msk) { if (pSD->IsCardInsert == FALSE) return SD_NO_SD_CARD; } return Successful; } int SD_SDCmdAndRsp(SD_INFO_T *pSD, uint8_t ucCmd, uint32_t uArg, int ntickCount) { volatile int buf; SD->CMDARG = uArg; buf = (SD->CTL&(~SDH_CTL_CMDCODE_Msk))|(ucCmd << 8)|(SDH_CTL_COEN_Msk | SDH_CTL_RIEN_Msk); SD->CTL = buf; if (ntickCount > 0) { while(SD->CTL & SDH_CTL_RIEN_Msk) { if(ntickCount-- == 0) { SD->CTL |= SDH_CTL_CTLRST_Msk; // reset SD engine return 2; } if (pSD->IsCardInsert == FALSE) return SD_NO_SD_CARD; } } else { while(SD->CTL & SDH_CTL_RIEN_Msk) { if (pSD->IsCardInsert == FALSE) return SD_NO_SD_CARD; } } if (_sd_uR7_CMD) { if (((SD->RESP1 & 0xff) != 0x55) && ((SD->RESP0 & 0xf) != 0x01)) { _sd_uR7_CMD = 0; return SD_CMD8_ERROR; } } if (!_sd_uR3_CMD) { if (SD->INTSTS & SDH_INTSTS_CRC7_Msk) // check CRC7 return Successful; else { return SD_CRC7_ERROR; } } else { // ignore CRC error for R3 case _sd_uR3_CMD = 0; SD->INTSTS = SDH_INTSTS_CRCIF_Msk; return Successful; } } int SD_Swap32(int val) { #if 1 int buf; buf = val; val <<= 24; val |= (buf<<8)&0xff0000; val |= (buf>>8)&0xff00; val |= (buf>>24)&0xff; return val; #else return ((val<<24) | ((val<<8)&0xff0000) | ((val>>8)&0xff00) | (val>>24)); #endif } // Get 16 bytes CID or CSD int SD_SDCmdAndRsp2(SD_INFO_T *pSD, uint8_t ucCmd, uint32_t uArg, uint32_t *puR2ptr) { unsigned int i, buf; unsigned int tmpBuf[5]; SD->CMDARG = uArg; buf = (SD->CTL&(~SDH_CTL_CMDCODE_Msk))|(ucCmd << 8)|(SDH_CTL_COEN_Msk | SDH_CTL_R2EN_Msk); SD->CTL = buf; while(SD->CTL & SDH_CTL_R2EN_Msk) { if (pSD->IsCardInsert == FALSE) return SD_NO_SD_CARD; } if (SD->INTSTS & SDH_INTSTS_CRC7_Msk) { for (i=0; i<5; i++) { tmpBuf[i] = SD_Swap32(*(int*)(SD_BASE+i*4)); } for (i=0; i<4; i++) *puR2ptr++ = ((tmpBuf[i] & 0x00ffffff)<<8) | ((tmpBuf[i+1] & 0xff000000)>>24); return Successful; } else return SD_CRC7_ERROR; } int SD_SDCmdAndRspDataIn(SD_INFO_T *pSD, uint8_t ucCmd, uint32_t uArg) { volatile int buf; SD->CMDARG = uArg; buf = (SD->CTL&(~SDH_CTL_CMDCODE_Msk))|(ucCmd << 8)| (SDH_CTL_COEN_Msk | SDH_CTL_RIEN_Msk | SDH_CTL_DIEN_Msk); SD->CTL = buf; while (SD->CTL & SDH_CTL_RIEN_Msk) { if (pSD->IsCardInsert == FALSE) return SD_NO_SD_CARD; } while (SD->CTL & SDH_CTL_DIEN_Msk) { if (pSD->IsCardInsert == FALSE) return SD_NO_SD_CARD; } if (!(SD->INTSTS & SDH_INTSTS_CRC7_Msk)) { // check CRC7 return SD_CRC7_ERROR; } if (!(SD->INTSTS & SDH_INTSTS_CRC16_Msk)) { // check CRC16 return SD_CRC16_ERROR; } return Successful; } // there are 8 bits for divider0, maximum is 256 #define SD_CLK_DIV0_MAX 256 void SD_Set_clock(uint32_t sd_clock_khz) { uint32_t rate, div1, i; uint32_t u32SD_ClkSrc; if(sd_clock_khz >= 24000) { sd_clock_khz = 24000; } u32SD_ClkSrc = (CLK->CLKSEL0 & CLK_CLKSEL0_SDHSEL_Msk); if(u32SD_ClkSrc == CLK_CLKSEL0_SDHSEL_HXT) _sd_ReferenceClock = (CLK_GetHXTFreq() / 1000); else if(u32SD_ClkSrc == CLK_CLKSEL0_SDHSEL_HIRC) _sd_ReferenceClock = (__HIRC / 1000); else if(u32SD_ClkSrc == CLK_CLKSEL0_SDHSEL_PLL) _sd_ReferenceClock = (CLK_GetPLLClockFreq() / 1000); else if(u32SD_ClkSrc == CLK_CLKSEL0_SDHSEL_HCLK) _sd_ReferenceClock = (CLK_GetHCLKFreq() / 1000); rate = _sd_ReferenceClock / sd_clock_khz; // choose slower clock if system clock cannot divisible by wanted clock if (_sd_ReferenceClock % sd_clock_khz != 0) rate++; if(rate >= SD_CLK_DIV0_MAX) { rate = SD_CLK_DIV0_MAX; } //--- calculate the second divider CLKDIV0[SDHOST_N] div1 = ((rate -1) & 0xFF); //--- setup register CLK->CLKDIV0 &= ~CLK_CLKDIV0_SDHDIV_Msk; CLK->CLKDIV0 |= (div1 << CLK_CLKDIV0_SDHDIV_Pos); for(i=0; i<1000; i++); // waiting for clock become stable return; } void SD_CardSelect(int cardSel) { if(cardSel == 0) { SD->CTL |= (SD->CTL & ~SDH_CTL_SDPORT_Msk); } else if(cardSel == 1) { SD->CTL |= ((SD->CTL & ~SDH_CTL_SDPORT_Msk) | (1 << SDH_CTL_SDPORT_Pos)); } } uint32_t SD_CardDetection(uint32_t u32CardNum) { uint32_t i; if (u32CardNum == SD_PORT0) { if(SD->INTEN & SDH_INTEN_CDSRC0_Msk) { // Card detect pin from GPIO if(SD->INTSTS & SDH_INTSTS_CDSTS0_Msk) { // Card remove SD0.IsCardInsert = FALSE; return FALSE; } else SD0.IsCardInsert = TRUE; } else if(!(SD->INTEN & SDH_INTEN_CDSRC0_Msk)) { SD->CTL |= SDH_CTL_CLKKEEP0_Msk; for(i= 0; i < 5000; i++); if(SD->INTSTS & SDH_INTSTS_CDSTS0_Msk) // Card insert SD0.IsCardInsert = TRUE; else { SD0.IsCardInsert = FALSE; return FALSE; } SD->CTL &= ~SDH_CTL_CLKKEEP0_Msk; } } else if (u32CardNum == SD_PORT1) { if(SD->INTEN & SDH_INTEN_CDSRC1_Msk) { // Card detect pin from GPIO if(SD->INTSTS & SDH_INTSTS_CDSTS1_Msk) { // Card remove SD1.IsCardInsert = FALSE; return FALSE; } else SD1.IsCardInsert = TRUE; } else if(!(SD->INTEN & SDH_INTEN_CDSRC1_Msk)) { SD->CTL |= SDH_CTL_CLKKEEP1_Msk; for(i= 0; i < 5000; i++); if(SD->INTSTS & SDH_INTSTS_CDSTS1_Msk) // Card insert SD1.IsCardInsert = TRUE; else { SD1.IsCardInsert = FALSE; return FALSE; } SD->CTL &= ~SDH_CTL_CLKKEEP1_Msk; } } return TRUE; } // Initial int SD_Init(SD_INFO_T *pSD) { int volatile i, status; unsigned int resp; unsigned int CIDBuffer[4]; unsigned int volatile u32CmdTimeOut; // set the clock to 200KHz //SD_Set_clock(200); SD_Set_clock(100); // power ON 74 clock SD->CTL |= SDH_CTL_CLK74OEN_Msk; while(SD->CTL & SDH_CTL_CLK74OEN_Msk) { if (pSD->IsCardInsert == FALSE) return SD_NO_SD_CARD; } SD_SDCommand(pSD, 0, 0); // reset all cards for (i=0x1000; i>0; i--); // initial SDHC _sd_uR7_CMD = 1; //u32CmdTimeOut = 5000; u32CmdTimeOut = 0xFFFFF; //u32CmdTimeOut = 0; i = SD_SDCmdAndRsp(pSD, 8, 0x00000155, u32CmdTimeOut); if (i == Successful) { // SD 2.0 SD_SDCmdAndRsp(pSD, 55, 0x00, u32CmdTimeOut); _sd_uR3_CMD = 1; SD_SDCmdAndRsp(pSD, 41, 0x40ff8000, u32CmdTimeOut); // 2.7v-3.6v resp = SD->RESP0; while (!(resp & 0x00800000)) { // check if card is ready SD_SDCmdAndRsp(pSD, 55, 0x00, u32CmdTimeOut); _sd_uR3_CMD = 1; SD_SDCmdAndRsp(pSD, 41, 0x40ff8000, u32CmdTimeOut); // 3.0v-3.4v resp = SD->RESP0; } if (resp & 0x00400000) pSD->CardType = SD_TYPE_SD_HIGH; else pSD->CardType = SD_TYPE_SD_LOW; } else { // SD 1.1 SD_SDCommand(pSD, 0, 0); // reset all cards for (i=0x100; i>0; i--); i = SD_SDCmdAndRsp(pSD, 55, 0x00, u32CmdTimeOut); if (i == 2) { // MMC memory SD_SDCommand(pSD, 0, 0); // reset for (i=0x100; i>0; i--); _sd_uR3_CMD = 1; if (SD_SDCmdAndRsp(pSD, 1, 0x40ff8000, u32CmdTimeOut) != 2) { // eMMC memory resp = SD->RESP0; while (!(resp & 0x00800000)) { // check if card is ready _sd_uR3_CMD = 1; SD_SDCmdAndRsp(pSD, 1, 0x40ff8000, u32CmdTimeOut); // high voltage resp = SD->RESP0; } if(resp & 0x00400000) pSD->CardType = SD_TYPE_EMMC; else pSD->CardType = SD_TYPE_MMC; } else { pSD->CardType = SD_TYPE_UNKNOWN; return SD_ERR_DEVICE; } } else if (i == 0) { // SD Memory _sd_uR3_CMD = 1; SD_SDCmdAndRsp(pSD, 41, 0x00ff8000, u32CmdTimeOut); // 3.0v-3.4v resp = SD->RESP0; while (!(resp & 0x00800000)) { // check if card is ready SD_SDCmdAndRsp(pSD, 55, 0x00,u32CmdTimeOut); _sd_uR3_CMD = 1; SD_SDCmdAndRsp(pSD, 41, 0x00ff8000, u32CmdTimeOut); // 3.0v-3.4v resp = SD->RESP0; } pSD->CardType = SD_TYPE_SD_LOW; } else { pSD->CardType = SD_TYPE_UNKNOWN; return SD_INIT_ERROR; } } // CMD2, CMD3 if (pSD->CardType != SD_TYPE_UNKNOWN) { SD_SDCmdAndRsp2(pSD, 2, 0x00, CIDBuffer); if ((pSD->CardType == SD_TYPE_MMC) || (pSD->CardType == SD_TYPE_EMMC)) { if ((status = SD_SDCmdAndRsp(pSD, 3, 0x10000, 0)) != Successful) // set RCA return status; pSD->RCA = 0x10000; } else { if ((status = SD_SDCmdAndRsp(pSD, 3, 0x00, 0)) != Successful) // get RCA return status; else pSD->RCA = (SD->RESP0 << 8) & 0xffff0000; } } return Successful; } int SD_SwitchToHighSpeed(SD_INFO_T *pSD) { int volatile status=0; uint16_t current_comsumption, busy_status0; SD->DMASA = (uint32_t)_sd_pSDHCBuffer; // set DMA transfer starting address SD->BLEN = 63; // 512 bit if ((status = SD_SDCmdAndRspDataIn(pSD, 6, 0x00ffff01)) != Successful) return Fail; current_comsumption = _sd_pSDHCBuffer[0]<<8 | _sd_pSDHCBuffer[1]; if (!current_comsumption) return Fail; busy_status0 = _sd_pSDHCBuffer[28]<<8 | _sd_pSDHCBuffer[29]; if (!busy_status0) { // function ready SD->DMASA = (uint32_t)_sd_pSDHCBuffer; // set DMA transfer starting address SD->BLEN = 63; // 512 bit if ((status = SD_SDCmdAndRspDataIn(pSD, 6, 0x80ffff01)) != Successful) return Fail; // function change timing: 8 clocks SD->CTL |= SDH_CTL_CLK8OEN_Msk; while(SD->CTL & SDH_CTL_CLK8OEN_Msk); current_comsumption = _sd_pSDHCBuffer[0]<<8 | _sd_pSDHCBuffer[1]; if (!current_comsumption) return Fail; return Successful; } else return Fail; } int SD_SelectCardType(SD_INFO_T *pSD) { int volatile status=0; unsigned int arg; if ((status = SD_SDCmdAndRsp(pSD, 7, pSD->RCA, 0)) != Successful) return status; SD_CheckRB(); // if SD card set 4bit if (pSD->CardType == SD_TYPE_SD_HIGH) { _sd_pSDHCBuffer = (uint8_t *)((uint32_t)_sd_ucSDHCBuffer); SD->DMASA = (uint32_t)_sd_pSDHCBuffer; // set DMA transfer starting address SD->BLEN = 0x07; // 64 bit if ((status = SD_SDCmdAndRsp(pSD, 55, pSD->RCA, 0)) != Successful) return status; if ((status = SD_SDCmdAndRspDataIn(pSD, 51, 0x00)) != Successful) return status; if ((_sd_ucSDHCBuffer[0] & 0xf) == 0x2) { status = SD_SwitchToHighSpeed(pSD); if (status == Successful) { /* divider */ SD_Set_clock(SDHC_FREQ); } } if ((status = SD_SDCmdAndRsp(pSD, 55, pSD->RCA, 0)) != Successful) return status; if ((status = SD_SDCmdAndRsp(pSD, 6, 0x02, 0)) != Successful) // set bus width return status; SD->CTL |= SDH_CTL_DBW_Msk; } else if (pSD->CardType == SD_TYPE_SD_LOW) { _sd_pSDHCBuffer = (uint8_t *)((uint32_t)_sd_ucSDHCBuffer); SD->DMASA = (uint32_t) _sd_pSDHCBuffer; // set DMA transfer starting address SD->BLEN = 0x07; // 64 bit if ((status = SD_SDCmdAndRsp(pSD, 55, pSD->RCA, 0)) != Successful) return status; if ((status = SD_SDCmdAndRspDataIn(pSD, 51, 0x00)) != Successful) return status; // set data bus width. ACMD6 for SD card, SDCR_DBW for host. if ((status = SD_SDCmdAndRsp(pSD, 55, pSD->RCA, 0)) != Successful) return status; if ((status = SD_SDCmdAndRsp(pSD, 6, 0x02, 0)) != Successful) // set bus width return status; SD->CTL |= SDH_CTL_DBW_Msk; } else if ((pSD->CardType == SD_TYPE_MMC) ||(pSD->CardType == SD_TYPE_EMMC)) { if(pSD->CardType == SD_TYPE_MMC) SD->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) arg = (3 << 24) | (183 << 16) | (1 << 8); if ((status = SD_SDCmdAndRsp(pSD, 6, arg, 0)) != Successful) return status; SD_CheckRB(); SD->CTL |= SDH_CTL_DBW_Msk;; // set bus width to 4-bit mode for SD host controller } if ((status = SD_SDCmdAndRsp(pSD, 16, SD_BLOCK_SIZE, 0)) != Successful) // set block length return status; SD->BLEN = SD_BLOCK_SIZE - 1; // set the block size SD_SDCommand(pSD, 7, 0); SD->CTL |= SDH_CTL_CLK8OEN_Msk; while(SD->CTL & SDH_CTL_CLK8OEN_Msk); #ifdef _SD_USE_INT_ SD->INTEN |= SDH_INTEN_BLKDIEN_Msk; #endif //_SD_USE_INT_ return Successful; } void SD_Get_SD_info(SD_INFO_T *pSD, DISK_DATA_T *_info) { unsigned int R_LEN, C_Size, MULT, size; unsigned int Buffer[4]; unsigned char *ptr; SD_SDCmdAndRsp2(pSD, 9, pSD->RCA, Buffer); if ((pSD->CardType == SD_TYPE_MMC) || (pSD->CardType == SD_TYPE_EMMC)) { // for MMC/eMMC card if ((Buffer[0] & 0xc0000000) == 0xc0000000) { // CSD_STRUCTURE [127:126] is 3 // CSD version depend on EXT_CSD register in eMMC v4.4 for card size > 2GB SD_SDCmdAndRsp(pSD, 7, pSD->RCA, 0); ptr = (uint8_t *)((uint32_t)_sd_ucSDHCBuffer ); SD->DMASA = (uint32_t)ptr; // set DMA transfer starting address SD->BLEN = 511; // read 512 bytes for EXT_CSD if (SD_SDCmdAndRspDataIn(pSD, 8, 0x00) != Successful) return; SD_SDCommand(pSD, 7, 0); SD->CTL |= SDH_CTL_CLK8OEN_Msk; while(SD->CTL & SDH_CTL_CLK8OEN_Msk); _info->totalSectorN = (*(uint32_t *)(ptr+212)); _info->diskSize = _info->totalSectorN / 2; } else { // CSD version v1.0/1.1/1.2 in eMMC v4.4 spec for card size <= 2GB R_LEN = (Buffer[1] & 0x000f0000) >> 16; C_Size = ((Buffer[1] & 0x000003ff) << 2) | ((Buffer[2] & 0xc0000000) >> 30); MULT = (Buffer[2] & 0x00038000) >> 15; size = (C_Size+1) * (1<<(MULT+2)) * (1<<R_LEN); _info->diskSize = size / 1024; _info->totalSectorN = size / 512; } } else { if (Buffer[0] & 0xc0000000) { C_Size = ((Buffer[1] & 0x0000003f) << 16) | ((Buffer[2] & 0xffff0000) >> 16); size = (C_Size+1) * 512; // Kbytes _info->diskSize = size; _info->totalSectorN = size << 1; } else { R_LEN = (Buffer[1] & 0x000f0000) >> 16; C_Size = ((Buffer[1] & 0x000003ff) << 2) | ((Buffer[2] & 0xc0000000) >> 30); MULT = (Buffer[2] & 0x00038000) >> 15; size = (C_Size+1) * (1<<(MULT+2)) * (1<<R_LEN); _info->diskSize = size / 1024; _info->totalSectorN = size / 512; } } _info->sectorSize = 512; } int SD_ChipErase(SD_INFO_T *pSD, DISK_DATA_T *_info) { int status=0; status = SD_SDCmdAndRsp(pSD, 32, 512, 6000); if (status < 0) { return status; } status = SD_SDCmdAndRsp(pSD, 33, _info->totalSectorN*512, 6000); if (status < 0) { return status; } status = SD_SDCmdAndRsp(pSD, 38, 0, 6000); if (status < 0) { return status; } SD_CheckRB(); return 0; } /// @endcond HIDDEN_SYMBOLS /** * @brief This function use to reset SD function and select card detection source and pin. * * @param[in] u32CardDetSrc Select card detection source from SD0 or SD1. ( \ref SD_PORT0 / \ref SD_PORT1) \n * And also select card detection pin from GPIO or DAT3 pin. ( \ref CardDetect_From_GPIO / \ref CardDetect_From_DAT3) * * @return None */ void SD_Open(uint32_t u32CardDetSrc) { // Enable SD Card Host Controller operation. //CLK->AHBCLK |= CLK_AHBCLK_SDHCKEN_Msk; // enable DMAC SD->DMACTL = SDH_DMACTL_DMARST_Msk; while(SD->DMACTL & SDH_DMACTL_DMARST_Msk); SD->DMACTL = SDH_DMACTL_DMAEN_Msk; //Reset FMI SD->GCTL = SDH_GCTL_GCTLRST_Msk; // Start reset FMI controller. while(SD->GCTL & SDH_GCTL_GCTLRST_Msk); //#ifdef _SD_USE_INT_ // NVIC_EnableIRQ(SD_IRQn); //#endif //_SD_USE_INT_ // enable SD SD->GCTL = SDH_GCTL_SDEN_Msk; if(u32CardDetSrc & SD_PORT0) { SD->CTL |= (SD->CTL & ~SDH_CTL_SDPORT_Msk); if(u32CardDetSrc & CardDetect_From_DAT3) { SD->INTEN &= ~SDH_INTEN_CDSRC0_Msk; } else { SD->INTEN |= SDH_INTEN_CDSRC0_Msk; } } else if(u32CardDetSrc & SD_PORT1) { SD->CTL |= ((SD->CTL & ~SDH_CTL_SDPORT_Msk) | (1 << SDH_CTL_SDPORT_Pos)); if(u32CardDetSrc & CardDetect_From_DAT3) { SD->INTEN &= ~SDH_INTEN_CDSRC1_Msk; } else { SD->INTEN |= SDH_INTEN_CDSRC1_Msk; } } SD->CTL |= SDH_CTL_CTLRST_Msk; // SD software reset while(SD->CTL & SDH_CTL_CTLRST_Msk); SD->CTL &= ~((0xFF) | (SDH_CTL_CLKKEEP1_Msk)); // disable SD clock output if(u32CardDetSrc & SD_PORT0) { memset(&SD0, 0, sizeof(SD_INFO_T)); } else if(u32CardDetSrc & SD_PORT1) { memset(&SD1, 0, sizeof(SD_INFO_T)); } } /** * @brief This function use to initial SD card. * * @param[in] u32CardNum Select initial SD0 or SD1. ( \ref SD_PORT0 / \ref SD_PORT1) * * @return None */ void SD_Probe(uint32_t u32CardNum) { // Disable FMI/SD host interrupt SD->GINTEN = 0; SD->CTL &= ~SDH_CTL_SDNWR_Msk; SD->CTL |= 0x09 << SDH_CTL_SDNWR_Pos; // set SDNWR = 9 SD->CTL &= ~SDH_CTL_BLKCNT_Msk; SD->CTL |= 0x01 << SDH_CTL_BLKCNT_Pos; // set BLKCNT = 1 SD->CTL &= ~SDH_CTL_DBW_Msk; // SD 1-bit data bus if(!(SD_CardDetection(u32CardNum))) return; if (u32CardNum == SD_PORT0) { if (SD_Init(&SD0) < 0) return; /* divider */ if (SD0.CardType == SD_TYPE_MMC) SD_Set_clock(20000); else SD_Set_clock(SD_FREQ); SD_Get_SD_info(&SD0, &SD_DiskInfo0); if (SD_SelectCardType(&SD0)) return; sd0_ok = 1; } else if (u32CardNum == SD_PORT1) { if (SD_Init(&SD1) < 0) return; /* divider */ if (SD1.CardType == SD_TYPE_MMC) SD_Set_clock(20000); else SD_Set_clock(SD_FREQ); SD_Get_SD_info(&SD1, &SD_DiskInfo1); if (SD_SelectCardType(&SD1)) return; sd1_ok = 1; } } /** * @brief This function use to read data from SD card. * * @param[in] u32CardNum Select card: SD0 or SD1. ( \ref SD_PORT0 / \ref SD_PORT1) * @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 SD_Read(uint32_t u32CardNum, uint8_t *pu8BufAddr, uint32_t u32StartSec, uint32_t u32SecCount) { char volatile bIsSendCmd = FALSE, buf; unsigned int volatile reg; int volatile i, loop, status; uint32_t blksize = SD_BLOCK_SIZE; SD_INFO_T *pSD; if(u32CardNum == SD_PORT0) pSD = &SD0; else pSD = &SD1; //--- check input parameters if (u32SecCount == 0) { return SD_SELECT_ERROR; } if ((status = SD_SDCmdAndRsp(pSD, 7, pSD->RCA, 0)) != Successful) return status; SD_CheckRB(); SD->BLEN = blksize - 1; // the actual byte count is equal to (SDBLEN+1) if ( (pSD->CardType == SD_TYPE_SD_HIGH) || (pSD->CardType == SD_TYPE_EMMC) ) SD->CMDARG = u32StartSec; else SD->CMDARG = u32StartSec * blksize; SD->DMASA = (uint32_t)pu8BufAddr; loop = u32SecCount / 255; for (i=0; i<loop; i++) { #ifdef _SD_USE_INT_ _sd_SDDataReady = FALSE; #endif //_SD_USE_INT_ reg = SD->CTL & ~SDH_CTL_CMDCODE_Msk; reg = reg | 0xff0000; // set BLK_CNT to 255 if (bIsSendCmd == FALSE) { SD->CTL = reg|(18<<8)|(SDH_CTL_COEN_Msk | SDH_CTL_RIEN_Msk | SDH_CTL_DIEN_Msk); bIsSendCmd = TRUE; } else SD->CTL = reg | SDH_CTL_DIEN_Msk; #ifdef _SD_USE_INT_ while(!_sd_SDDataReady) #else while(1) #endif //_SD_USE_INT_ { if(_sd_SDDataReady) break; #ifndef _SD_USE_INT_ if ((SD->INTSTS & SDH_INTSTS_BLKDIF_Msk) && (!(SD->CTL & SDH_CTL_DIEN_Msk))) { SD->INTSTS = SDH_INTSTS_BLKDIF_Msk; break; } #endif if (pSD->IsCardInsert == FALSE) return SD_NO_SD_CARD; } if (!(SD->INTSTS & SDH_INTSTS_CRC7_Msk)) { // check CRC7 //printf("sdioSD_Read_in_blksize(): response error!\n"); return SD_CRC7_ERROR; } if (!(SD->INTSTS & SDH_INTSTS_CRC16_Msk)) { // check CRC16 //printf("sdioSD_Read_in_blksize() :read data error!\n"); return SD_CRC16_ERROR; } } loop = u32SecCount % 255; if (loop != 0) { #ifdef _SD_USE_INT_ _sd_SDDataReady = FALSE; #endif //_SD_USE_INT_ reg = SD->CTL & (~SDH_CTL_CMDCODE_Msk); reg = reg & (~SDH_CTL_BLKCNT_Msk); reg |= (loop << 16); // setup SDCR_BLKCNT if (bIsSendCmd == FALSE) { SD->CTL = reg|(18<<8)|(SDH_CTL_COEN_Msk | SDH_CTL_RIEN_Msk | SDH_CTL_DIEN_Msk); bIsSendCmd = TRUE; } else SD->CTL = reg | SDH_CTL_DIEN_Msk; #ifdef _SD_USE_INT_ while(!_sd_SDDataReady) #else while(1) #endif //_SD_USE_INT_ { #ifndef _SD_USE_INT_ if ((SD->INTSTS & SDH_INTSTS_BLKDIF_Msk) && (!(SD->CTL & SDH_CTL_DIEN_Msk))) { SD->INTSTS = SDH_INTSTS_BLKDIF_Msk; break; } #endif if (pSD->IsCardInsert == FALSE) return SD_NO_SD_CARD; } if (!(SD->INTSTS & SDH_INTSTS_CRC7_Msk)) { // check CRC7 //printf("sdioSD_Read_in_blksize(): response error!\n"); return SD_CRC7_ERROR; } if (!(SD->INTSTS & SDH_INTSTS_CRC16_Msk)) { // check CRC16 //printf("sdioSD_Read_in_blksize(): read data error!\n"); return SD_CRC16_ERROR; } } if (SD_SDCmdAndRsp(pSD, 12, 0, 0)) { // stop command //printf("stop command fail !!\n"); return SD_CRC7_ERROR; } SD_CheckRB(); SD_SDCommand(pSD, 7, 0); SD->CTL |= SDH_CTL_CLK8OEN_Msk; while(SD->CTL & SDH_CTL_CLK8OEN_Msk); return Successful; } /** * @brief This function use to write data to SD card. * * @param[in] u32CardNum Select card: SD0 or SD1. ( \ref SD_PORT0 / \ref SD_PORT1) * @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 SD_SELECT_ERROR : u32SecCount is zero. \n * \ref SD_NO_SD_CARD : SD card be removed. \n * \ref SD_CRC_ERROR : CRC error happen. \n * \ref SD_CRC7_ERROR : CRC7 error happen. \n * \ref Successful : Write data to SD card success. */ uint32_t SD_Write(uint32_t u32CardNum, uint8_t *pu8BufAddr, uint32_t u32StartSec, uint32_t u32SecCount) { char volatile bIsSendCmd = FALSE; unsigned int volatile reg; int volatile i, loop, status; SD_INFO_T *pSD; if(u32CardNum == SD_PORT0) pSD = &SD0; else pSD = &SD1; //--- check input parameters if (u32SecCount == 0) { return SD_SELECT_ERROR; } if ((status = SD_SDCmdAndRsp(pSD, 7, pSD->RCA, 0)) != Successful) return status; SD_CheckRB(); // According to SD Spec v2.0, the write CMD block size MUST be 512, and the start address MUST be 512*n. SD->BLEN = SD_BLOCK_SIZE - 1; // set the block size if ((pSD->CardType == SD_TYPE_SD_HIGH) || (pSD->CardType == SD_TYPE_EMMC)) SD->CMDARG = u32StartSec; else SD->CMDARG = u32StartSec * SD_BLOCK_SIZE; // set start address for SD CMD SD->DMASA = (uint32_t)pu8BufAddr; loop = u32SecCount / 255; // the maximum block count is 0xFF=255 for register SDCR[BLK_CNT] for (i=0; i<loop; i++) { #ifdef _SD_USE_INT_ _sd_SDDataReady = FALSE; #endif //_SD_USE_INT_ reg = SD->CTL & 0xff00c080; reg = reg | 0xff0000; // set BLK_CNT to 0xFF=255 if (!bIsSendCmd) { SD->CTL = reg|(25<<8)|(SDH_CTL_COEN_Msk | SDH_CTL_RIEN_Msk | SDH_CTL_DOEN_Msk); bIsSendCmd = TRUE; } else SD->CTL = reg | SDH_CTL_DOEN_Msk; #ifdef _SD_USE_INT_ while(!_sd_SDDataReady) #else while(1) #endif //_SD_USE_INT_ { #ifndef _SD_USE_INT_ if ((SD->INTSTS & SDH_INTSTS_BLKDIF_Msk) && (!(SD->CTL & SDH_CTL_DOEN_Msk))) { SD->INTSTS = SDH_INTSTS_BLKDIF_Msk; break; } #endif if (pSD->IsCardInsert == FALSE) return SD_NO_SD_CARD; } if ((SD->INTSTS & SDH_INTSTS_CRCIF_Msk) != 0) { // check CRC SD->INTSTS = SDH_INTSTS_CRCIF_Msk; return SD_CRC_ERROR; } } loop = u32SecCount % 255; if (loop != 0) { #ifdef _SD_USE_INT_ _sd_SDDataReady = FALSE; #endif //_SD_USE_INT_ reg = (SD->CTL & 0xff00c080) | (loop << 16); if (!bIsSendCmd) { SD->CTL = reg|(25<<8)|(SDH_CTL_COEN_Msk | SDH_CTL_RIEN_Msk | SDH_CTL_DOEN_Msk); bIsSendCmd = TRUE; } else SD->CTL = reg | SDH_CTL_DOEN_Msk; #ifdef _SD_USE_INT_ while(!_sd_SDDataReady) #else while(1) #endif //_SD_USE_INT_ { #ifndef _SD_USE_INT_ if ((SD->INTSTS & SDH_INTSTS_BLKDIF_Msk) && (!(SD->CTL & SDH_CTL_DOEN_Msk))) { SD->INTSTS = SDH_INTSTS_BLKDIF_Msk; break; } #endif if (pSD->IsCardInsert == FALSE) return SD_NO_SD_CARD; } if ((SD->INTSTS & SDH_INTSTS_CRCIF_Msk) != 0) { // check CRC SD->INTSTS = SDH_INTSTS_CRCIF_Msk; return SD_CRC_ERROR; } } SD->INTSTS = SDH_INTSTS_CRCIF_Msk; if (SD_SDCmdAndRsp(pSD, 12, 0, 0)) { // stop command return SD_CRC7_ERROR; } SD_CheckRB(); SD_SDCommand(pSD, 7, 0); SD->CTL |= SDH_CTL_CLK8OEN_Msk; while(SD->CTL & SDH_CTL_CLK8OEN_Msk); return Successful; } /*@}*/ /* end of group NUC472_442_SD_EXPORTED_FUNCTIONS */ /*@}*/ /* end of group NUC472_442_SD_Driver */ /*@}*/ /* end of group NUC472_442_Device_Driver */ /*** (C) COPYRIGHT 2013 Nuvoton Technology Corp. ***/