595 lines
20 KiB
C
595 lines
20 KiB
C
/******************************************************************************************************************************************
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* 文件名称: SWM320_sdio.c
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* 功能说明: SWM320单片机的SDIO接口驱动库
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* 技术支持: http://www.synwit.com.cn/e/tool/gbook/?bid=1
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* 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
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* 版本日期: V1.1.0 2017年10月25日
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* 升级记录:
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*
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*
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*******************************************************************************************************************************************
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* @attention
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*
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* THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS WITH CODING INFORMATION
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* REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE TIME. AS A RESULT, SYNWIT SHALL NOT BE HELD LIABLE
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* FOR ANY DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING FROM THE CONTENT
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* OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING INFORMATION CONTAINED HEREIN IN CONN-
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* -ECTION WITH THEIR PRODUCTS.
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*
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* COPYRIGHT 2012 Synwit Technology
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*******************************************************************************************************************************************/
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#include "SWM320.h"
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#include "SWM320_sdio.h"
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SD_CardInfo SD_cardInfo;
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/******************************************************************************************************************************************
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* 函数名称: SDIO_Init()
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* 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
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* 输 入: uint32_t freq SDIO_CLK时钟频率
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* 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
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* 注意事项: 无
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******************************************************************************************************************************************/
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uint32_t SDIO_Init(uint32_t freq)
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{
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uint32_t res;
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uint32_t resp, resps[4];
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SYS->CLKDIV &= ~SYS_CLKDIV_SDIO_Msk;
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if(SystemCoreClock > 80000000) //SDIO时钟需要小于52MHz
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SYS->CLKDIV |= (2 << SYS_CLKDIV_SDIO_Pos); //SDCLK = SYSCLK / 4
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else
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SYS->CLKDIV |= (1 << SYS_CLKDIV_SDIO_Pos); //SDCLK = SYSCLK / 2
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SYS->CLKEN |= (0x01 << SYS_CLKEN_SDIO_Pos);
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SDIO->CR2 = (1 << SDIO_CR2_RSTALL_Pos);
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SDIO->CR1 = (1 << SDIO_CR1_CDSRC_Pos) |
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(0 << SDIO_CR1_8BIT_Pos) |
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(0 << SDIO_CR1_4BIT_Pos) |
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(1 << SDIO_CR1_PWRON_Pos) |
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(7 << SDIO_CR1_VOLT_Pos);
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SDIO->CR2 = (1 << SDIO_CR2_CLKEN_Pos) |
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(1 << SDIO_CR2_SDCLKEN_Pos) |
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(calcSDCLKDiv(100000) << SDIO_CR2_SDCLKDIV_Pos) |
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(0xC << SDIO_CR2_TIMEOUT_Pos); // 2**25 SDIO_CLK
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while((SDIO->CR2 & SDIO_CR2_CLKRDY_Msk) == 0);
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SDIO->IFE = 0xFFFFFFFF;
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SDIO_SendCmd(SD_CMD_GO_IDLE_STATE, 0x00, SD_RESP_NO, 0); //CMD0: GO_IDLE_STATE
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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
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if(res != SD_RES_OK)
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return res;
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if(resp == 0x1AA) SD_cardInfo.CardType = SDIO_STD_CAPACITY_SD_CARD_V2_0;
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else SD_cardInfo.CardType = SDIO_STD_CAPACITY_SD_CARD_V1_1;
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do //ACMD41: SD_CMD_SD_APP_OP_COND
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{
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res = SDIO_SendCmd(SD_CMD_APP_CMD, 0x00, SD_RESP_32b, &resp);
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if(res != SD_RES_OK)
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return res;
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if(resp != 0x120) return SD_RES_ERR; //不是SD卡，可能是MMC卡
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if(SD_cardInfo.CardType == SDIO_STD_CAPACITY_SD_CARD_V2_0)
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SDIO_SendCmd(SD_CMD_SD_APP_OP_COND, 0x80100000|0x40000000, SD_RESP_32b, &resp);
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else
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SDIO_SendCmd(SD_CMD_SD_APP_OP_COND, 0x80100000|0x00000000, SD_RESP_32b, &resp);
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} while(((resp >> 31) & 0x01) == 0); //上电没完成时resp[31] == 0
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if(((resp >> 30) & 0x01) == 1) SD_cardInfo.CardType = SDIO_HIGH_CAPACITY_SD_CARD;
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SDIO_SendCmd(SD_CMD_ALL_SEND_CID, 0x00, SD_RESP_128b, resps); //CMD2: SD_CMD_ALL_SEND_CID，获取CID
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parseCID(resps);
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SDIO_SendCmd(SD_CMD_SET_REL_ADDR, 0x00, SD_RESP_32b, &resp); //CMD3: SD_CMD_SET_REL_ADDR，设置RCA
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SD_cardInfo.RCA = resp >> 16;
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SDIO_SendCmd(SD_CMD_SEND_CSD, SD_cardInfo.RCA << 16, SD_RESP_128b, resps); //CMD9: SD_CMD_SEND_CSD，获取CSD
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parseCSD(resps);
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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
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SDIO->CR2 &= ~(SDIO_CR2_SDCLKEN_Msk | SDIO_CR2_SDCLKDIV_Msk);
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SDIO->CR2 |= (1 << SDIO_CR2_SDCLKEN_Pos) |
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(calcSDCLKDiv(freq) << SDIO_CR2_SDCLKDIV_Pos); //初始化完成，SDCLK切换到高速
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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
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SDIO->IF = SDIO_IF_TRXDONE_Msk;
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SDIO_SendCmd(SD_CMD_APP_CMD, SD_cardInfo.RCA << 16, SD_RESP_32b, &resp);
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SDIO_SendCmd(SD_CMD_APP_SD_SET_BUSWIDTH, SD_BUSWIDTH_4b, SD_RESP_32b, &resp); //切换成4位总线模式
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SDIO->CR1 |= (1 << SDIO_CR1_4BIT_Pos);
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SDIO_SendCmd(SD_CMD_SET_BLOCKLEN, 512, SD_RESP_32b, &resp); //固定块大小位512字节
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SDIO->BLK = 512;
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return SD_RES_OK;
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}
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/******************************************************************************************************************************************
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* 函数名称: SDIO_BlockWrite()
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* 功能说明: 向SD卡写入数据
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* 输 入: uint32_t block_addr SD卡块地址，每块512字节
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* uint32_t buff[] 要写入的数据
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* 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
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* 注意事项: 无
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******************************************************************************************************************************************/
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uint32_t SDIO_BlockWrite(uint32_t block_addr, uint32_t buff[])
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{
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uint32_t res, i;
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uint32_t addr, resp;
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if(SD_cardInfo.CardType == SDIO_HIGH_CAPACITY_SD_CARD) addr = block_addr;
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else addr = block_addr * 512;
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res = SDIO_SendCmdWithData(SD_CMD_WRITE_SINGLE_BLOCK, addr, SD_RESP_32b, &resp, 0, 1);
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if(res != SD_RES_OK)
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return res;
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while((SDIO->IF & SDIO_IF_BUFWRRDY_Msk) == 0) __NOP();
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SDIO->IF = SDIO_IF_BUFWRRDY_Msk;
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for(i = 0; i < 512/4; i++) SDIO->DATA = buff[i];
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while((SDIO->IF & SDIO_IF_TRXDONE_Msk) == 0) __NOP();
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SDIO->IF = SDIO_IF_TRXDONE_Msk;
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return SD_RES_OK;
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}
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/******************************************************************************************************************************************
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* 函数名称: SDIO_MultiBlockWrite()
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* 功能说明: 向SD卡写入多块数据
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* 输 入: uint32_t block_addr SD卡块地址，每块512字节
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* uint16_t block_cnt 要写入的块数
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* uint32_t buff[] 要写入的数据
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* 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
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* 注意事项: 无
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******************************************************************************************************************************************/
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uint32_t SDIO_MultiBlockWrite(uint32_t block_addr, uint16_t block_cnt, uint32_t buff[])
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{
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uint32_t res, i, j;
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uint32_t addr, resp;
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if(SD_cardInfo.CardType == SDIO_HIGH_CAPACITY_SD_CARD) addr = block_addr;
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else addr = block_addr * 512;
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res = SDIO_SendCmdWithData(SD_CMD_WRITE_MULT_BLOCK, addr, SD_RESP_32b, &resp, 0, block_cnt);
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if(res != SD_RES_OK)
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return res;
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for(i = 0; i < block_cnt; i++)
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{
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while((SDIO->IF & SDIO_IF_BUFWRRDY_Msk) == 0) __NOP();
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SDIO->IF = SDIO_IF_BUFWRRDY_Msk;
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for(j = 0; j < 512/4; j++) SDIO->DATA = buff[i*(512/4) + j];
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}
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while((SDIO->IF & SDIO_IF_TRXDONE_Msk) == 0) __NOP();
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SDIO->IF = SDIO_IF_TRXDONE_Msk;
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return SD_RES_OK;
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}
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/******************************************************************************************************************************************
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* 函数名称: SDIO_DMABlockWrite()
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* 功能说明: 通过DMA向SD卡写入多块数据
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* 输 入: uint32_t block_addr SD卡块地址，每块512字节
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* uint16_t block_cnt 要写入的块数
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* uint32_t buff[] 要写入的数据
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* 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
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* 注意事项: 无
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******************************************************************************************************************************************/
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uint32_t SDIO_DMABlockWrite(uint32_t block_addr, uint16_t block_cnt, uint32_t buff[])
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{
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uint32_t res;
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uint32_t addr, resp;
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if(SD_cardInfo.CardType == SDIO_HIGH_CAPACITY_SD_CARD) addr = block_addr;
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else addr = block_addr * 512;
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SDIO->DMA_MEM_ADDR = (uint32_t) buff;
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res = SDIO_SendCmdWithDataByDMA(SD_CMD_WRITE_MULT_BLOCK, addr, SD_RESP_32b, &resp, 0, block_cnt);
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if(res != SD_RES_OK)
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return res;
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while((SDIO->IF & SDIO_IF_TRXDONE_Msk) == 0) __NOP();
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SDIO->IF = SDIO_IF_TRXDONE_Msk;
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return SD_RES_OK;
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}
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/******************************************************************************************************************************************
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* 函数名称: SDIO_BlockRead()
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* 功能说明: 从SD卡读出数据
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* 输 入: uint32_t block_addr SD卡块地址，每块512字节
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* uint32_t buff[] 读出的数据
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* 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
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* 注意事项: 无
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******************************************************************************************************************************************/
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uint32_t SDIO_BlockRead(uint32_t block_addr, uint32_t buff[])
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{
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uint32_t res, i;
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uint32_t addr, resp;
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if(SD_cardInfo.CardType == SDIO_HIGH_CAPACITY_SD_CARD) addr = block_addr;
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else addr = block_addr * 512;
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res = SDIO_SendCmdWithData(SD_CMD_READ_SINGLE_BLOCK, addr, SD_RESP_32b, &resp, 1, 1);
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if(res != SD_RES_OK)
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return res;
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while((SDIO->IF & SDIO_IF_BUFRDRDY_Msk) == 0) __NOP();
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SDIO->IF = SDIO_IF_BUFRDRDY_Msk;
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for(i = 0; i < 512/4; i++) buff[i] = SDIO->DATA;
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while((SDIO->IF & SDIO_IF_TRXDONE_Msk) == 0) __NOP();
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SDIO->IF = SDIO_IF_TRXDONE_Msk;
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return SD_RES_OK;
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}
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/******************************************************************************************************************************************
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* 函数名称: SDIO_MultiBlockRead()
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* 功能说明: 从SD卡读出多块数据
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* 输 入: uint32_t block_addr SD卡块地址，每块512字节
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* uint16_t block_cnt 要读出的块数
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* uint32_t buff[] 读出的数据
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* 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
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* 注意事项: 无
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******************************************************************************************************************************************/
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uint32_t SDIO_MultiBlockRead(uint32_t block_addr, uint16_t block_cnt, uint32_t buff[])
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{
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uint32_t res, i, j;
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uint32_t addr, resp;
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if(SD_cardInfo.CardType == SDIO_HIGH_CAPACITY_SD_CARD) addr = block_addr;
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else addr = block_addr * 512;
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res = SDIO_SendCmdWithData(SD_CMD_READ_MULT_BLOCK, addr, SD_RESP_32b, &resp, 1, block_cnt);
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if(res != SD_RES_OK)
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return res;
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for(i = 0; i < block_cnt; i++)
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{
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while((SDIO->IF & SDIO_IF_BUFRDRDY_Msk) == 0) __NOP();
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SDIO->IF = SDIO_IF_BUFRDRDY_Msk;
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for(j = 0; j < 512/4; j++) buff[i*(512/4) + j] = SDIO->DATA;
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}
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while((SDIO->IF & SDIO_IF_TRXDONE_Msk) == 0) __NOP();
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SDIO->IF = SDIO_IF_TRXDONE_Msk;
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return SD_RES_OK;
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}
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/******************************************************************************************************************************************
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* 函数名称: SDIO_DMABlockRead()
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* 功能说明: 通过DMA从SD卡读出多块数据
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* 输 入: uint32_t block_addr SD卡块地址，每块512字节
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* uint16_t block_cnt 要读出的块数
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* uint32_t buff[] 读出的数据
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* 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
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* 注意事项: 无
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******************************************************************************************************************************************/
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uint32_t SDIO_DMABlockRead(uint32_t block_addr, uint16_t block_cnt, uint32_t buff[])
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{
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uint32_t res;
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uint32_t addr, resp;
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if(SD_cardInfo.CardType == SDIO_HIGH_CAPACITY_SD_CARD) addr = block_addr;
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else addr = block_addr * 512;
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SDIO->DMA_MEM_ADDR = (uint32_t)buff;
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res = SDIO_SendCmdWithDataByDMA(SD_CMD_READ_MULT_BLOCK, addr, SD_RESP_32b, &resp, 1, block_cnt);
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if(res != SD_RES_OK)
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return res;
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while((SDIO->IF & SDIO_IF_TRXDONE_Msk) == 0) __NOP();
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SDIO->IF = SDIO_IF_TRXDONE_Msk;
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return SD_RES_OK;
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}
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/******************************************************************************************************************************************
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* 函数名称: _SDIO_SendCmd()
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* 功能说明: SDIO向SD卡发送命令
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* 输 入: uint32_t cmd 命令索引
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* uint32_t arg 命令参数
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* uint32_t _resp_type 响应类型，取值SD_RESP_NO、SD_RESP_32b、SD_RESP_128b、SD_RESP_32b_busy
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* uint32_t *resp_data 响应内容
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* uint32_t have_data 是否有数据传输
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* uint32_t data_read 1 读SD卡 0 写SD卡
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* uint16_t block_cnt 读写块个数
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* uint32_t use_dma 1 使用DMA搬运数据
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* 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
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* 注意事项: 无
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******************************************************************************************************************************************/
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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)
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{
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SDIO->BLK &= ~SDIO_BLK_COUNT_Msk;
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SDIO->BLK |= (block_cnt << SDIO_BLK_COUNT_Pos);
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SDIO->ARG = arg;
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SDIO->CMD = (cmd << SDIO_CMD_CMDINDX_Pos) |
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(0 << SDIO_CMD_CMDTYPE_Pos) |
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(0 << SDIO_CMD_IDXCHECK_Pos) |
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(0 << SDIO_CMD_CRCCHECK_Pos) |
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(_resp_type << SDIO_CMD_RESPTYPE_Pos) |
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(have_data << SDIO_CMD_HAVEDATA_Pos) |
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(data_read << SDIO_CMD_DIRREAD_Pos) |
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((block_cnt > 1) << SDIO_CMD_MULTBLK_Pos) |
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((block_cnt > 1) << SDIO_CMD_BLKCNTEN_Pos) |
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((block_cnt > 1) << SDIO_CMD_AUTOCMD12_Pos) |
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(use_dma << SDIO_CMD_DMAEN_Pos);
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while((SDIO->IF & SDIO_IF_CMDDONE_Msk) == 0)
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{
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if(SDIO->IF & SDIO_IF_CMDTIMEOUT_Msk)
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{
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SDIO->IF = SDIO_IF_CMDTIMEOUT_Msk;
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return SD_RES_TIMEOUT;
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}
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else if(SDIO->IF & SDIO_IF_ERROR_Msk)
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{
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SDIO->IF = 0xFFFFFFFF;
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return SD_RES_ERR;
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}
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}
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SDIO->IF = SDIO_IF_CMDDONE_Msk;
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if(_resp_type == SD_RESP_32b)
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{
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resp_data[0] = SDIO->RESP[0];
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}
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else if(_resp_type == SD_RESP_128b)
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{
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//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
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//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
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resp_data[0] = (SDIO->RESP[3] << 8) + ((SDIO->RESP[2] >> 24) & 0xFF);
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resp_data[1] = (SDIO->RESP[2] << 8) + ((SDIO->RESP[1] >> 24) & 0xFF);
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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 = (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 = ((SYS->CLKDIV & SYS_CLKDIV_SDIO_Msk) >> SYS_CLKDIV_SDIO_Pos);
|
||
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;
|
||
}
|