/****************************************************************************************************************************************** * 文件名称: SWM341_sdio.c * 功能说明: SWM341单片机的SDIO接口驱动库 * 技术支持: http://www.synwit.com.cn/e/tool/gbook/?bid=1 * 注意事项: 为了通用性、兼容性、易用性，只支持以512字节为单位的读写 * 版本日期: V1.1.0 2017年10月25日 * 升级记录: * * ******************************************************************************************************************************************* * @attention * * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS WITH CODING INFORMATION * REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE TIME. AS A RESULT, SYNWIT SHALL NOT BE HELD LIABLE * FOR ANY DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING FROM THE CONTENT * OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING INFORMATION CONTAINED HEREIN IN CONN- * -ECTION WITH THEIR PRODUCTS. * * COPYRIGHT 2012 Synwit Technology *******************************************************************************************************************************************/ #include "SWM341.h" #include "SWM341_sdio.h" SD_CardInfo SD_cardInfo; /****************************************************************************************************************************************** * 函数名称: SDIO_Init() * 功能说明: SDIO读写SD卡初始化，初始化成高速4线模式、读写以512字节大小进行 * 输 入: uint32_t freq SDIO_CLK时钟频率 * 输 出: uint32_t SD_RES_OK 操作成功 SD_RES_ERR 操作失败 SD_RES_TIMEOUT 操作超时 * 注意事项: 无 ******************************************************************************************************************************************/ uint32_t SDIO_Init(uint32_t freq) { uint32_t res; uint32_t resp, resps[4]; SYS->CLKSEL &= ~SYS_CLKSEL_SDIO_Msk; if(SystemCoreClock > 80000000) //SDIO时钟需要小于52MHz SYS->CLKSEL |= (2 << SYS_CLKSEL_SDIO_Pos); //SDCLK = SYSCLK / 4 else SYS->CLKSEL |= (0 << SYS_CLKSEL_SDIO_Pos); //SDCLK = SYSCLK / 2 SYS->CLKEN0 |= (0x01 << SYS_CLKEN0_SDIO_Pos); SDIO->CR2 = (1 << SDIO_CR2_RSTALL_Pos); SDIO->CR1 = (1 << SDIO_CR1_CDSRC_Pos) | (0 << SDIO_CR1_8BIT_Pos) | (0 << SDIO_CR1_4BIT_Pos) | (1 << SDIO_CR1_PWRON_Pos) | (7 << SDIO_CR1_VOLT_Pos); SDIO->CR2 = (1 << SDIO_CR2_CLKEN_Pos) | (1 << SDIO_CR2_SDCLKEN_Pos) | (calcSDCLKDiv(100000) << SDIO_CR2_SDCLKDIV_Pos) | (0xC << SDIO_CR2_TIMEOUT_Pos); // 2**25 SDIO_CLK while((SDIO->CR2 & SDIO_CR2_CLKRDY_Msk) == 0); SDIO->IM = 0xFFFFFFFF; SDIO_SendCmd(SD_CMD_GO_IDLE_STATE, 0x00, SD_RESP_NO, 0); //CMD0: GO_IDLE_STATE res = SDIO_SendCmd(SD_CMD_SEND_IF_COND, 0x1AA, SD_RESP_32b, &resp); //CMD8: SEND_IF_COND, 检测工作电压、检测是否支持SD 2.0 if(res != SD_RES_OK) return res; if(resp == 0x1AA) SD_cardInfo.CardType = SDIO_STD_CAPACITY_SD_CARD_V2_0; else SD_cardInfo.CardType = SDIO_STD_CAPACITY_SD_CARD_V1_1; do //ACMD41: SD_CMD_SD_APP_OP_COND { res = SDIO_SendCmd(SD_CMD_APP_CMD, 0x00, SD_RESP_32b, &resp); if(res != SD_RES_OK) return res; if(resp != 0x120) return SD_RES_ERR; //不是SD卡，可能是MMC卡 if(SD_cardInfo.CardType == SDIO_STD_CAPACITY_SD_CARD_V2_0) SDIO_SendCmd(SD_CMD_SD_APP_OP_COND, 0x80100000|0x40000000, SD_RESP_32b, &resp); else SDIO_SendCmd(SD_CMD_SD_APP_OP_COND, 0x80100000|0x00000000, SD_RESP_32b, &resp); } while(((resp >> 31) & 0x01) == 0); //上电没完成时resp[31] == 0 if(((resp >> 30) & 0x01) == 1) SD_cardInfo.CardType = SDIO_HIGH_CAPACITY_SD_CARD; SDIO_SendCmd(SD_CMD_ALL_SEND_CID, 0x00, SD_RESP_128b, resps); //CMD2: SD_CMD_ALL_SEND_CID，获取CID parseCID(resps); SDIO_SendCmd(SD_CMD_SET_REL_ADDR, 0x00, SD_RESP_32b, &resp); //CMD3: SD_CMD_SET_REL_ADDR，设置RCA SD_cardInfo.RCA = resp >> 16; SDIO_SendCmd(SD_CMD_SEND_CSD, SD_cardInfo.RCA << 16, SD_RESP_128b, resps); //CMD9: SD_CMD_SEND_CSD，获取CSD parseCSD(resps); if(SD_cardInfo.CardBlockSize < 0x200) return SD_RES_ERR; //本驱动只支持以512字节为单位的读写，所以最大读写单位必须不小于512 SDIO->CR2 &= ~(SDIO_CR2_SDCLKEN_Msk | SDIO_CR2_SDCLKDIV_Msk); SDIO->CR2 |= (1 << SDIO_CR2_SDCLKEN_Pos) | (calcSDCLKDiv(freq) << SDIO_CR2_SDCLKDIV_Pos); //初始化完成，SDCLK切换到高速 SDIO_SendCmd(SD_CMD_SEL_DESEL_CARD, SD_cardInfo.RCA << 16, SD_RESP_32b_busy, &resp); //CMD7: 选中卡，从Standy模式进入Transfer模式 SDIO->IF = SDIO_IF_TRXDONE_Msk; SDIO_SendCmd(SD_CMD_APP_CMD, SD_cardInfo.RCA << 16, SD_RESP_32b, &resp); SDIO_SendCmd(SD_CMD_APP_SD_SET_BUSWIDTH, SD_BUSWIDTH_4b, SD_RESP_32b, &resp); //切换成4位总线模式 SDIO->CR1 |= (1 << SDIO_CR1_4BIT_Pos); SDIO_SendCmd(SD_CMD_SET_BLOCKLEN, 512, SD_RESP_32b, &resp); //固定块大小位512字节 SD_cardInfo.CardBlockSize = 512; SDIO->BLK = 512; return SD_RES_OK; } /****************************************************************************************************************************************** * 函数名称: SDIO_BlockWrite() * 功能说明: 向SD卡写入数据 * 输 入: uint32_t block_addr SD卡块地址，每块512字节 * uint32_t buff[] 要写入的数据 * 输 出: uint32_t SD_RES_OK 操作成功 SD_RES_ERR 操作失败 SD_RES_TIMEOUT 操作超时 * 注意事项: 无 ******************************************************************************************************************************************/ uint32_t SDIO_BlockWrite(uint32_t block_addr, uint32_t buff[]) { uint32_t res, i; uint32_t addr, resp; if(SD_cardInfo.CardType == SDIO_HIGH_CAPACITY_SD_CARD) addr = block_addr; else addr = block_addr * 512; res = SDIO_SendCmdWithData(SD_CMD_WRITE_SINGLE_BLOCK, addr, SD_RESP_32b, &resp, 0, 1); if(res != SD_RES_OK) return res; while((SDIO->IF & SDIO_IF_BUFWRRDY_Msk) == 0) __NOP(); SDIO->IF = SDIO_IF_BUFWRRDY_Msk; for(i = 0; i < 512/4; i++) SDIO->DATA = buff[i]; while((SDIO->IF & SDIO_IF_TRXDONE_Msk) == 0) __NOP(); SDIO->IF = SDIO_IF_TRXDONE_Msk; return SD_RES_OK; } /****************************************************************************************************************************************** * 函数名称: SDIO_MultiBlockWrite() * 功能说明: 向SD卡写入多块数据 * 输 入: uint32_t block_addr SD卡块地址，每块512字节 * uint16_t block_cnt 要写入的块数 * uint32_t buff[] 要写入的数据 * 输 出: uint32_t SD_RES_OK 操作成功 SD_RES_ERR 操作失败 SD_RES_TIMEOUT 操作超时 * 注意事项: 无 ******************************************************************************************************************************************/ uint32_t SDIO_MultiBlockWrite(uint32_t block_addr, uint16_t block_cnt, uint32_t buff[]) { uint32_t res, i, j; uint32_t addr, resp; if(SD_cardInfo.CardType == SDIO_HIGH_CAPACITY_SD_CARD) addr = block_addr; else addr = block_addr * 512; res = SDIO_SendCmdWithData(SD_CMD_WRITE_MULT_BLOCK, addr, SD_RESP_32b, &resp, 0, block_cnt); if(res != SD_RES_OK) return res; for(i = 0; i < block_cnt; i++) { while((SDIO->IF & SDIO_IF_BUFWRRDY_Msk) == 0) __NOP(); SDIO->IF = SDIO_IF_BUFWRRDY_Msk; for(j = 0; j < 512/4; j++) SDIO->DATA = buff[i*(512/4) + j]; } while((SDIO->IF & SDIO_IF_TRXDONE_Msk) == 0) __NOP(); SDIO->IF = SDIO_IF_TRXDONE_Msk; return SD_RES_OK; } /****************************************************************************************************************************************** * 函数名称: SDIO_DMABlockWrite() * 功能说明: 通过DMA向SD卡写入多块数据 * 输 入: uint32_t block_addr SD卡块地址，每块512字节 * uint16_t block_cnt 要写入的块数 * uint32_t buff[] 要写入的数据 * 输 出: uint32_t SD_RES_OK 操作成功 SD_RES_ERR 操作失败 SD_RES_TIMEOUT 操作超时 * 注意事项: 无 ******************************************************************************************************************************************/ uint32_t SDIO_DMABlockWrite(uint32_t block_addr, uint16_t block_cnt, uint32_t buff[]) { uint32_t res; uint32_t addr, resp; if(SD_cardInfo.CardType == SDIO_HIGH_CAPACITY_SD_CARD) addr = block_addr; else addr = block_addr * 512; SDIO->DMA_MEM_ADDR = (uint32_t) buff; res = SDIO_SendCmdWithDataByDMA(SD_CMD_WRITE_MULT_BLOCK, addr, SD_RESP_32b, &resp, 0, block_cnt); if(res != SD_RES_OK) return res; while((SDIO->IF & SDIO_IF_TRXDONE_Msk) == 0) __NOP(); SDIO->IF = SDIO_IF_TRXDONE_Msk; return SD_RES_OK; } /****************************************************************************************************************************************** * 函数名称: SDIO_BlockRead() * 功能说明: 从SD卡读出数据 * 输 入: uint32_t block_addr SD卡块地址，每块512字节 * uint32_t buff[] 读出的数据 * 输 出: uint32_t SD_RES_OK 操作成功 SD_RES_ERR 操作失败 SD_RES_TIMEOUT 操作超时 * 注意事项: 无 ******************************************************************************************************************************************/ uint32_t SDIO_BlockRead(uint32_t block_addr, uint32_t buff[]) { uint32_t res, i; uint32_t addr, resp; if(SD_cardInfo.CardType == SDIO_HIGH_CAPACITY_SD_CARD) addr = block_addr; else addr = block_addr * 512; res = SDIO_SendCmdWithData(SD_CMD_READ_SINGLE_BLOCK, addr, SD_RESP_32b, &resp, 1, 1); if(res != SD_RES_OK) return res; while((SDIO->IF & SDIO_IF_BUFRDRDY_Msk) == 0) __NOP(); SDIO->IF = SDIO_IF_BUFRDRDY_Msk; for(i = 0; i < 512/4; i++) buff[i] = SDIO->DATA; while((SDIO->IF & SDIO_IF_TRXDONE_Msk) == 0) __NOP(); SDIO->IF = SDIO_IF_TRXDONE_Msk; return SD_RES_OK; } /****************************************************************************************************************************************** * 函数名称: SDIO_MultiBlockRead() * 功能说明: 从SD卡读出多块数据 * 输 入: uint32_t block_addr SD卡块地址，每块512字节 * uint16_t block_cnt 要读出的块数 * uint32_t buff[] 读出的数据 * 输 出: uint32_t SD_RES_OK 操作成功 SD_RES_ERR 操作失败 SD_RES_TIMEOUT 操作超时 * 注意事项: 无 ******************************************************************************************************************************************/ uint32_t SDIO_MultiBlockRead(uint32_t block_addr, uint16_t block_cnt, uint32_t buff[]) { uint32_t res, i, j; uint32_t addr, resp; if(SD_cardInfo.CardType == SDIO_HIGH_CAPACITY_SD_CARD) addr = block_addr; else addr = block_addr * 512; res = SDIO_SendCmdWithData(SD_CMD_READ_MULT_BLOCK, addr, SD_RESP_32b, &resp, 1, block_cnt); if(res != SD_RES_OK) return res; for(i = 0; i < block_cnt; i++) { while((SDIO->IF & SDIO_IF_BUFRDRDY_Msk) == 0) __NOP(); SDIO->IF = SDIO_IF_BUFRDRDY_Msk; for(j = 0; j < 512/4; j++) buff[i*(512/4) + j] = SDIO->DATA; } while((SDIO->IF & SDIO_IF_TRXDONE_Msk) == 0) __NOP(); SDIO->IF = SDIO_IF_TRXDONE_Msk; return SD_RES_OK; } /****************************************************************************************************************************************** * 函数名称: SDIO_DMABlockRead() * 功能说明: 通过DMA从SD卡读出多块数据 * 输 入: uint32_t block_addr SD卡块地址，每块512字节 * uint16_t block_cnt 要读出的块数 * uint32_t buff[] 读出的数据 * 输 出: uint32_t SD_RES_OK 操作成功 SD_RES_ERR 操作失败 SD_RES_TIMEOUT 操作超时 * 注意事项: 无 ******************************************************************************************************************************************/ uint32_t SDIO_DMABlockRead(uint32_t block_addr, uint16_t block_cnt, uint32_t buff[]) { uint32_t res; uint32_t addr, resp; if(SD_cardInfo.CardType == SDIO_HIGH_CAPACITY_SD_CARD) addr = block_addr; else addr = block_addr * 512; SDIO->DMA_MEM_ADDR = (uint32_t)buff; res = SDIO_SendCmdWithDataByDMA(SD_CMD_READ_MULT_BLOCK, addr, SD_RESP_32b, &resp, 1, block_cnt); if(res != SD_RES_OK) return res; while((SDIO->IF & SDIO_IF_TRXDONE_Msk) == 0) __NOP(); SDIO->IF = SDIO_IF_TRXDONE_Msk; return SD_RES_OK; } /****************************************************************************************************************************************** * 函数名称: _SDIO_SendCmd() * 功能说明: SDIO向SD卡发送命令 * 输 入: uint32_t cmd 命令索引 * uint32_t arg 命令参数 * uint32_t resp_type 响应类型，取值SD_RESP_NO、SD_RESP_32b、SD_RESP_128b、SD_RESP_32b_busy * uint32_t *resp_data 响应内容 * uint32_t have_data 是否有数据传输 * uint32_t data_read 1 读SD卡 0 写SD卡 * uint16_t block_cnt 读写块个数 * uint32_t use_dma 1 使用DMA搬运数据 * 输 出: uint32_t SD_RES_OK 操作成功 SD_RES_ERR 操作失败 SD_RES_TIMEOUT 操作超时 * 注意事项: 无 ******************************************************************************************************************************************/ uint32_t _SDIO_SendCmd(uint32_t cmd, uint32_t arg, uint32_t resp_type, uint32_t *resp_data, uint32_t have_data, uint32_t data_read, uint16_t block_cnt, uint32_t use_dma) { SDIO->BLK &= ~SDIO_BLK_COUNT_Msk; SDIO->BLK |= (block_cnt << SDIO_BLK_COUNT_Pos); SDIO->ARG = arg; SDIO->CMD = (cmd << SDIO_CMD_CMDINDX_Pos) | (0 << SDIO_CMD_CMDTYPE_Pos) | (0 << SDIO_CMD_IDXCHECK_Pos) | (0 << SDIO_CMD_CRCCHECK_Pos) | (resp_type << SDIO_CMD_RESPTYPE_Pos) | (have_data << SDIO_CMD_HAVEDATA_Pos) | (data_read << SDIO_CMD_DIRREAD_Pos) | ((block_cnt > 1) << SDIO_CMD_MULTBLK_Pos) | ((block_cnt > 1) << SDIO_CMD_BLKCNTEN_Pos) | ((block_cnt > 1) << SDIO_CMD_AUTOCMD12_Pos) | (use_dma << SDIO_CMD_DMAEN_Pos); while((SDIO->IF & SDIO_IF_CMDDONE_Msk) == 0) { if(SDIO->IF & SDIO_IF_CMDTIMEOUT_Msk) { SDIO->IF = SDIO_IF_CMDTIMEOUT_Msk; return SD_RES_TIMEOUT; } else if(SDIO->IF & SDIO_IF_ERROR_Msk) { SDIO->IF = 0xFFFFFFFF; return SD_RES_ERR; } } SDIO->IF = SDIO_IF_CMDDONE_Msk; if(resp_type == SD_RESP_32b) { resp_data[0] = SDIO->RESP[0]; } else if(resp_type == SD_RESP_128b) { //寄存器中将CID/CSD[127-8]依次存放在了RESP3-0[119-0]，最低位的CRC被丢掉 //读出数据时调整了顺序，将CID/CSD[127-8]存放在resp_data0-3[127-8]，最低8位填充0x00 resp_data[0] = (SDIO->RESP[3] << 8) + ((SDIO->RESP[2] >> 24) & 0xFF); resp_data[1] = (SDIO->RESP[2] << 8) + ((SDIO->RESP[1] >> 24) & 0xFF); resp_data[2] = (SDIO->RESP[1] << 8) + ((SDIO->RESP[0] >> 24) & 0xFF); resp_data[3] = (SDIO->RESP[0] << 8) + 0x00; } return SD_RES_OK; } void parseCID(uint32_t CID_Tab[4]) { uint8_t tmp = 0; /*!< Byte 0 */ tmp = (uint8_t)((CID_Tab[0] & 0xFF000000) >> 24); SD_cardInfo.SD_cid.ManufacturerID = tmp; /*!< Byte 1 */ tmp = (uint8_t)((CID_Tab[0] & 0x00FF0000) >> 16); SD_cardInfo.SD_cid.OEM_AppliID = tmp << 8; /*!< Byte 2 */ tmp = (uint8_t)((CID_Tab[0] & 0x000000FF00) >> 8); SD_cardInfo.SD_cid.OEM_AppliID |= tmp; /*!< Byte 3 */ tmp = (uint8_t)(CID_Tab[0] & 0x000000FF); SD_cardInfo.SD_cid.ProdName1 = tmp << 24; /*!< Byte 4 */ tmp = (uint8_t)((CID_Tab[1] & 0xFF000000) >> 24); SD_cardInfo.SD_cid.ProdName1 |= tmp << 16; /*!< Byte 5 */ tmp = (uint8_t)((CID_Tab[1] & 0x00FF0000) >> 16); SD_cardInfo.SD_cid.ProdName1 |= tmp << 8; /*!< Byte 6 */ tmp = (uint8_t)((CID_Tab[1] & 0x0000FF00) >> 8); SD_cardInfo.SD_cid.ProdName1 |= tmp; /*!< Byte 7 */ tmp = (uint8_t)(CID_Tab[1] & 0x000000FF); SD_cardInfo.SD_cid.ProdName2 = tmp; /*!< Byte 8 */ tmp = (uint8_t)((CID_Tab[2] & 0xFF000000) >> 24); SD_cardInfo.SD_cid.ProdRev = tmp; /*!< Byte 9 */ tmp = (uint8_t)((CID_Tab[2] & 0x00FF0000) >> 16); SD_cardInfo.SD_cid.ProdSN = tmp << 24; /*!< Byte 10 */ tmp = (uint8_t)((CID_Tab[2] & 0x0000FF00) >> 8); SD_cardInfo.SD_cid.ProdSN |= tmp << 16; /*!< Byte 11 */ tmp = (uint8_t)(CID_Tab[2] & 0x000000FF); SD_cardInfo.SD_cid.ProdSN |= tmp << 8; /*!< Byte 12 */ tmp = (uint8_t)((CID_Tab[3] & 0xFF000000) >> 24); SD_cardInfo.SD_cid.ProdSN |= tmp; /*!< Byte 13 */ tmp = (uint8_t)((CID_Tab[3] & 0x00FF0000) >> 16); SD_cardInfo.SD_cid.Reserved1 |= (tmp & 0xF0) >> 4; SD_cardInfo.SD_cid.ManufactDate = (tmp & 0x0F) << 8; /*!< Byte 14 */ tmp = (uint8_t)((CID_Tab[3] & 0x0000FF00) >> 8); SD_cardInfo.SD_cid.ManufactDate |= tmp; } void parseCSD(uint32_t CSD_Tab[4]) { uint8_t tmp = 0; /*!< Byte 0 */ tmp = (uint8_t)((CSD_Tab[0] & 0xFF000000) >> 24); SD_cardInfo.SD_csd.CSDStruct = (tmp & 0xC0) >> 6; SD_cardInfo.SD_csd.SysSpecVersion = (tmp & 0x3C) >> 2; SD_cardInfo.SD_csd.Reserved1 = tmp & 0x03; /*!< Byte 1 */ tmp = (uint8_t)((CSD_Tab[0] & 0x00FF0000) >> 16); SD_cardInfo.SD_csd.TAAC = tmp; /*!< Byte 2 */ tmp = (uint8_t)((CSD_Tab[0] & 0x0000FF00) >> 8); SD_cardInfo.SD_csd.NSAC = tmp; /*!< Byte 3 */ tmp = (uint8_t)(CSD_Tab[0] & 0x000000FF); SD_cardInfo.SD_csd.MaxBusClkFrec = tmp; /*!< Byte 4 */ tmp = (uint8_t)((CSD_Tab[1] & 0xFF000000) >> 24); SD_cardInfo.SD_csd.CardComdClasses = tmp << 4; /*!< Byte 5 */ tmp = (uint8_t)((CSD_Tab[1] & 0x00FF0000) >> 16); SD_cardInfo.SD_csd.CardComdClasses |= (tmp & 0xF0) >> 4; SD_cardInfo.SD_csd.RdBlockLen = tmp & 0x0F; /*!< Byte 6 */ tmp = (uint8_t)((CSD_Tab[1] & 0x0000FF00) >> 8); SD_cardInfo.SD_csd.PartBlockRead = (tmp & 0x80) >> 7; SD_cardInfo.SD_csd.WrBlockMisalign = (tmp & 0x40) >> 6; SD_cardInfo.SD_csd.RdBlockMisalign = (tmp & 0x20) >> 5; SD_cardInfo.SD_csd.DSRImpl = (tmp & 0x10) >> 4; SD_cardInfo.SD_csd.Reserved2 = 0; /*!< Reserved */ if ((SD_cardInfo.CardType == SDIO_STD_CAPACITY_SD_CARD_V1_1) || (SD_cardInfo.CardType == SDIO_STD_CAPACITY_SD_CARD_V2_0)) { SD_cardInfo.SD_csd.DeviceSize = (tmp & 0x03) << 10; /*!< Byte 7 */ tmp = (uint8_t)(CSD_Tab[1] & 0x000000FF); SD_cardInfo.SD_csd.DeviceSize |= (tmp) << 2; /*!< Byte 8 */ tmp = (uint8_t)((CSD_Tab[2] & 0xFF000000) >> 24); SD_cardInfo.SD_csd.DeviceSize |= (tmp & 0xC0) >> 6; SD_cardInfo.SD_csd.MaxRdCurrentVDDMin = (tmp & 0x38) >> 3; SD_cardInfo.SD_csd.MaxRdCurrentVDDMax = (tmp & 0x07); /*!< Byte 9 */ tmp = (uint8_t)((CSD_Tab[2] & 0x00FF0000) >> 16); SD_cardInfo.SD_csd.MaxWrCurrentVDDMin = (tmp & 0xE0) >> 5; SD_cardInfo.SD_csd.MaxWrCurrentVDDMax = (tmp & 0x1C) >> 2; SD_cardInfo.SD_csd.DeviceSizeMul = (tmp & 0x03) << 1; /*!< Byte 10 */ tmp = (uint8_t)((CSD_Tab[2] & 0x0000FF00) >> 8); SD_cardInfo.SD_csd.DeviceSizeMul |= (tmp & 0x80) >> 7; SD_cardInfo.CardCapacity = (SD_cardInfo.SD_csd.DeviceSize + 1) ; SD_cardInfo.CardCapacity *= (1 << (SD_cardInfo.SD_csd.DeviceSizeMul + 2)); SD_cardInfo.CardBlockSize = 1 << (SD_cardInfo.SD_csd.RdBlockLen); SD_cardInfo.CardCapacity *= SD_cardInfo.CardBlockSize; } else if (SD_cardInfo.CardType == SDIO_HIGH_CAPACITY_SD_CARD) { /*!< Byte 7 */ tmp = (uint8_t)(CSD_Tab[1] & 0x000000FF); SD_cardInfo.SD_csd.DeviceSize = (tmp & 0x3F) << 16; /*!< Byte 8 */ tmp = (uint8_t)((CSD_Tab[2] & 0xFF000000) >> 24); SD_cardInfo.SD_csd.DeviceSize |= (tmp << 8); /*!< Byte 9 */ tmp = (uint8_t)((CSD_Tab[2] & 0x00FF0000) >> 16); SD_cardInfo.SD_csd.DeviceSize |= (tmp); /*!< Byte 10 */ tmp = (uint8_t)((CSD_Tab[2] & 0x0000FF00) >> 8); SD_cardInfo.CardCapacity = (uint64_t)(SD_cardInfo.SD_csd.DeviceSize + 1) * 512 * 1024; SD_cardInfo.CardBlockSize = 512; } SD_cardInfo.SD_csd.EraseGrSize = (tmp & 0x40) >> 6; SD_cardInfo.SD_csd.EraseGrMul = (tmp & 0x3F) << 1; /*!< Byte 11 */ tmp = (uint8_t)(CSD_Tab[2] & 0x000000FF); SD_cardInfo.SD_csd.EraseGrMul |= (tmp & 0x80) >> 7; SD_cardInfo.SD_csd.WrProtectGrSize = (tmp & 0x7F); /*!< Byte 12 */ tmp = (uint8_t)((CSD_Tab[3] & 0xFF000000) >> 24); SD_cardInfo.SD_csd.WrProtectGrEnable = (tmp & 0x80) >> 7; SD_cardInfo.SD_csd.ManDeflECC = (tmp & 0x60) >> 5; SD_cardInfo.SD_csd.WrSpeedFact = (tmp & 0x1C) >> 2; SD_cardInfo.SD_csd.MaxWrBlockLen = (tmp & 0x03) << 2; /*!< Byte 13 */ tmp = (uint8_t)((CSD_Tab[3] & 0x00FF0000) >> 16); SD_cardInfo.SD_csd.MaxWrBlockLen |= (tmp & 0xC0) >> 6; SD_cardInfo.SD_csd.WriteBlockPaPartial = (tmp & 0x20) >> 5; SD_cardInfo.SD_csd.Reserved3 = 0; SD_cardInfo.SD_csd.ContentProtectAppli = (tmp & 0x01); /*!< Byte 14 */ tmp = (uint8_t)((CSD_Tab[3] & 0x0000FF00) >> 8); SD_cardInfo.SD_csd.FileFormatGrouop = (tmp & 0x80) >> 7; SD_cardInfo.SD_csd.CopyFlag = (tmp & 0x40) >> 6; SD_cardInfo.SD_csd.PermWrProtect = (tmp & 0x20) >> 5; SD_cardInfo.SD_csd.TempWrProtect = (tmp & 0x10) >> 4; SD_cardInfo.SD_csd.FileFormat = (tmp & 0x0C) >> 2; SD_cardInfo.SD_csd.ECC = (tmp & 0x03); } uint32_t calcSDCLKDiv(uint32_t freq) { uint32_t prediv; switch((SYS->CLKSEL & SYS_CLKSEL_SDIO_Msk) >> SYS_CLKSEL_SDIO_Pos) { case 0: prediv = 1; break; case 1: prediv = 3; break; case 2: prediv = 2; break; case 3: prediv = 0; break; } uint32_t clkdiv = (SystemCoreClock / (1 << prediv)) / freq; uint32_t regdiv = 0; if(clkdiv > 128) regdiv = 0x80; else if(clkdiv > 64) regdiv = 0x40; else if(clkdiv > 32) regdiv = 0x20; else if(clkdiv > 16) regdiv = 0x10; else if(clkdiv > 8) regdiv = 0x08; else if(clkdiv > 4) regdiv = 0x04; else if(clkdiv > 2) regdiv = 0x02; else if(clkdiv > 1) regdiv = 0x01; else regdiv = 0x00; return regdiv; }