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sdcard.c
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sdcard.c
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#include "sdcard.h"
#include <delay.h>
static SD_Error SD_PowerON(SDIO_TypeDef * SDIOx);
static SD_Error SD_InitializeCards(SDIO_TypeDef * SDIOx);
static SD_Error SD_GetCardInfo(SD_CardInfo * cardinfo);
static SD_Error SD_SelectDeselect(SDIO_TypeDef * SDIOx, uint32_t addr);
static SD_Error SD_SetBlockSize(SDIO_TypeDef * SDIOx, uint32_t BlockSize);
static SD_Error SD_EnableWideBusOperation(SDIO_TypeDef * SDIOx, uint8_t WideMode);
static SD_Error SD_Enable_WideBus(SDIO_TypeDef * SDIOx, FunctionalState NewState);
static SD_Error CmdResp1Error(SDIO_TypeDef * SDIOx, SDIO_CmdInitTypeDef * SDIO_CmdInitStruct);
static SD_Error CmdResp2Error(SDIO_TypeDef * SDIOx, SDIO_CmdInitTypeDef * SDIO_CmdInitStruct);
static SD_Error CmdResp6Error(SDIO_TypeDef * SDIOx, SDIO_CmdInitTypeDef * SDIO_CmdInitStruct, uint16_t * prca);
static SD_Error CmdResp7Error(SDIO_TypeDef * SDIOx, SDIO_CmdInitTypeDef * SDIO_CmdInitStruct);
static uint32_t CardType = SDIO_STD_CAPACITY_SD_CARD_V1_1; // 存储卡的类型，先把它初始化为1.1协议的卡
static uint32_t CSD_Tab[4], CID_Tab[4], RCA = 0; // 存储CSD，DID，寄存器和卡相对地址
SD_CardInfo SDCardInfo;
/*
* 函数名：GPIO_Configuration
* 描述 ：初始化SDIO用到的引脚，开启时钟。
* 输入 ：无
* 输出 ：无
* 调用 ：内部调用
*/
static SD_Error SDIO_GPIO_Configuration(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
GPIO_Init(GPIOE, &GPIO_InitStructure);
if(SD_DETECT != 0)
{
return SD_SWITCH_ERROR;
}
CCU_BUS0_GatingClockCmd(CCU_BUS0Gating_SD0, ENABLE);
CCU_BUS0_GatingResetCmd(CCU_BUS0Gating_SD0, ENABLE);
GPIO_AF_Remap(GPIOF, GPIO_PinSource0, GPIO_AF_PF0_SDC0_D1);
GPIO_AF_Remap(GPIOF, GPIO_PinSource1, GPIO_AF_PF1_SDC0_D0);
GPIO_AF_Remap(GPIOF, GPIO_PinSource2, GPIO_AF_PF2_SDC0_CLK);
GPIO_AF_Remap(GPIOF, GPIO_PinSource3, GPIO_AF_PF3_SDC0_CMD);
GPIO_AF_Remap(GPIOF, GPIO_PinSource4, GPIO_AF_PF4_SDC0_D3);
GPIO_AF_Remap(GPIOF, GPIO_PinSource5, GPIO_AF_PF5_SDC0_D2);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_1 | GPIO_Pin_2 |
GPIO_Pin_3 | GPIO_Pin_4 | GPIO_Pin_5;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStructure.GPIO_DriveCurrent = GPIO_DriveCurrent_Level3;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
GPIO_Init(GPIOF, &GPIO_InitStructure);
return SD_OK;
}
/**
* 函数名：SD_Init
* 描述 ：初始化SD卡，使卡处于就绪状态(准备传输数据)
* 输入 ：无
* 输出 ：-SD_Error SD卡错误代码
* 成功时则为 SD_OK
* 调用 ：外部调用
*/
SD_Error SD_Init(SDIO_TypeDef * SDIOx)
{
/*重置SD_Error状态*/
SD_Error errorstatus = SD_OK;
/* SDIO 外设底层引脚初始化 */
errorstatus = SDIO_GPIO_Configuration();
if(errorstatus != SD_OK)
{
/*!< CMD Response TimeOut (wait for CMDSENT flag) */
return (errorstatus);
}
/*上电并进行卡识别流程，确认卡的操作电压 */
errorstatus = SD_PowerON(SDIOx);
/*如果上电，识别不成功，返回“响应超时”错误 */
if(errorstatus != SD_OK)
{
/*!< CMD Response TimeOut (wait for CMDSENT flag) */
return (errorstatus);
}
delay_ms(1);
/*卡识别成功，进行卡初始化 */
errorstatus = SD_InitializeCards(SDIOx);
if(errorstatus != SD_OK) // 失败返回
{
/*!< CMD Response TimeOut (wait for CMDSENT flag) */
return (errorstatus);
}
delay_ms(1);
/* 用来读取csd/cid寄存器 */
errorstatus = SD_GetCardInfo(&SDCardInfo);
if(errorstatus != SD_OK)
{
/*!< CMD Response TimeOut (wait for CMDSENT flag) */
return (errorstatus);
}
delay_ms(1);
/* 通过cmd7 ,rca选择要操作的卡 */
errorstatus = SD_SelectDeselect(SDIOx, (uint32_t)(RCA << 16));
if(errorstatus != SD_OK)
{
/*!< CMD Response TimeOut (wait for CMDSENT flag) */
return (errorstatus);
}
delay_ms(1);
// 设置块大小
SDCardInfo.CardBlockSize = 512;
errorstatus = SD_SetBlockSize(SDIOx, SDCardInfo.CardBlockSize);
if(errorstatus != SD_OK)
{
/*!< CMD Response TimeOut (wait for CMDSENT flag) */
return (errorstatus);
}
delay_ms(1);
errorstatus = SDIO_Config_Clock(SDIOx, 20000000);
if(errorstatus != SD_OK)
{
/*!< CMD Response TimeOut (wait for CMDSENT flag) */
return (errorstatus);
}
delay_ms(1);
/* 最后为了提高读写，开启4bits模式 */
errorstatus = SD_EnableWideBusOperation(SDIOx, MMCSD_BUS_WIDTH_4);
return (errorstatus);
}
/*
* 函数名：SD_PowerON
* 描述 ：确保SD卡的工作电压和配置控制时钟
* 输入 ：无
* 输出 ：-SD_Error SD卡错误代码
* 成功时则为 SD_OK
* 调用 ：在 SD_Init() 调用
*/
static SD_Error SD_PowerON(SDIO_TypeDef * SDIOx)
{
SD_Error errorstatus = SD_OK;
uint32_t response = 0, count = 0, validvoltage = 0;
uint32_t SDType = SD_STD_CAPACITY;
SDIO_CmdInitTypeDef SDIO_CmdInitStructure;
SDIO_CmdInitStructure.SDIO_Resp[0] = 0;
SDIO_CmdInitStructure.SDIO_Resp[1] = 0;
SDIO_CmdInitStructure.SDIO_Resp[2] = 0;
SDIO_CmdInitStructure.SDIO_Resp[3] = 0;
SDIO_Set_Clk(SDIOx, 24000000);
SDIO_Set_Ios(SDIOx, 400000, MMCSD_BUS_WIDTH_1);
/********************************************************************************************************/
/* 下面发送一系列命令,开始卡识别流程
* CMD0: GO_IDLE_STATE(复位所以SD卡进入空闲状态)
* 没有响应
*/
SDIO_CmdInitStructure.SDIO_Argument = 0x0;
SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_GO_IDLE_STATE;
SDIO_CmdInitStructure.SDIO_Flags = SDIO_RESP_NONE;
SDIO_SendCommand(SDIOx, &SDIO_CmdInitStructure, 0);
delay_ms(1);
/********************************************************************************************************/
/* CMD8: SEND_IF_COND
* Send CMD8 to verify SD card interface operating condition
*
* Argument: - [31:12]: Reserved (shall be set to '0')
* - [11:8] : Supply Voltage (VHS) 0x1 (Range: 2.7-3.6 V)
* - [7:0] : Check Pattern (recommended 0xAA)
* CMD Response: R7
*/
/* 接收到命令sd会返回这个参数 */
SDIO_CmdInitStructure.SDIO_Argument = SD_CHECK_PATTERN;
SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SEND_IF_COND;
SDIO_CmdInitStructure.SDIO_Flags = SDIO_RESP_R7;
/*检查是否接收到命令*/
errorstatus = CmdResp7Error(SDIOx, &SDIO_CmdInitStructure);
delay_ms(1);
/* 有响应则card遵循sd协议2.0版本 */
if(errorstatus == SD_OK)
{
/* SD Card 2.0 ，先把它定义会sdsc类型的卡 */
CardType = SDIO_STD_CAPACITY_SD_CARD_V2_0;
/* 这个变量用作ACMD41的参数，用来询问是sdsc卡还是sdhc卡 */
SDType = SD_HIGH_CAPACITY;
}
else /* 无响应，说明是1.x的或mmc的卡 */
{
/* 发命令 CMD55 */
SDIO_CmdInitStructure.SDIO_Argument = 0x00;
SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_APP_CMD;
SDIO_CmdInitStructure.SDIO_Flags = SDIO_RESP_R1;
SDIO_SendCommand(SDIOx, &SDIO_CmdInitStructure, 0);
errorstatus = CmdResp1Error(SDIOx, &SDIO_CmdInitStructure);
delay_ms(1);
}
/* CMD55
* 发送cmd55，用于检测是sd卡还是mmc卡，或是不支持的卡
* CMD 响应: R1
*/
SDIO_CmdInitStructure.SDIO_Argument = 0x00;
SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_APP_CMD;
SDIO_CmdInitStructure.SDIO_Flags = SDIO_RESP_R1;
SDIO_SendCommand(SDIOx, &SDIO_CmdInitStructure, 0);
/* 是否响应，没响应的是mmc或不支持的卡 */
errorstatus = CmdResp1Error(SDIOx, &SDIO_CmdInitStructure);
delay_ms(1);
if(errorstatus == SD_OK) // 响应了cmd55，是sd卡，可能为1.x,可能为2.0
{
/*下面开始循环地发送sdio支持的电压范围，循环一定次数*/
/* SD CARD
* Send ACMD41 SD_APP_OP_COND with Argument 0x80100000
*/
while((!validvoltage) && (count < SD_MAX_VOLT_TRIAL))
{
/* 在发送ACMD命令前都要先向卡发送CMD55
* SEND CMD55 APP_CMD with RCA as 0
*/
SDIO_CmdInitStructure.SDIO_Argument = 0x00;
SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_APP_CMD;
SDIO_CmdInitStructure.SDIO_Flags = SDIO_RESP_R1;
SDIO_SendCommand(SDIOx, &SDIO_CmdInitStructure, 50);
/* ACMD41
* 命令参数由支持的电压范围及HCS位组成，HCS位置一来区分卡是SDSC还是SDHC
* 0:SDSC
* 1:SDHC
* 响应：R3,对应的是OCR寄存器
*/
SDIO_CmdInitStructure.SDIO_Argument = SD_VOLTAGE_WINDOW_SD | SDType;
SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SD_APP_OP_COND;
SDIO_CmdInitStructure.SDIO_Flags = SDIO_RESP_R3;
SDIO_SendCommand(SDIOx, &SDIO_CmdInitStructure, 50);
// /* 若卡需求电压在SDIO的供电电压范围内，会自动上电并标志pwr_up位
// * 读取卡寄存器，卡状态
// */
response = SDIOx->RESP0;
/* 读取卡的ocr寄存器的pwr_up位，看是否已工作在正常电压 */
validvoltage = (((response >> 31) == 1) ? 1 : 0);
count++; /* 计算循环次数 */
}
if(count >= SD_MAX_VOLT_TRIAL) /* 循环检测超过一定次数还没上电 */
{
errorstatus = SD_INVALID_VOLTRANGE; /* SDIO不支持card的供电电压 */
return (errorstatus);
}
/*检查卡返回信息中的HCS位*/
/* 判断ocr中的ccs位 ，如果是sdsc卡则不执行下面的语句 */
if(response &= SD_HIGH_CAPACITY)
{
CardType = SDIO_HIGH_CAPACITY_SD_CARD; /* 把卡类型从初始化的sdsc型改为sdhc型 */
}
else
{
CardType = SDIO_STD_CAPACITY_SD_CARD_V2_0; /* 把卡类型改为sdsc型 */
}
} /* else MMC Card */
return (errorstatus);
}
/*
* 函数名：SD_InitializeCards
* 描述 ：初始化所有的卡或者单个卡进入就绪状态
* 输入 ：无
* 输出 ：-SD_Error SD卡错误代码
* 成功时则为 SD_OK
* 调用 ：在 SD_Init() 调用，在调用power_on（）上电卡识别完毕后，调用此函数进行卡初始化
*/
static SD_Error SD_InitializeCards(SDIO_TypeDef * SDIOx)
{
SD_Error errorstatus = SD_OK;
uint16_t rca = 0x01;
SDIO_CmdInitTypeDef SDIO_CmdInitStructure;
SDIO_CmdInitStructure.SDIO_Resp[0] = 0;
SDIO_CmdInitStructure.SDIO_Resp[1] = 0;
SDIO_CmdInitStructure.SDIO_Resp[2] = 0;
SDIO_CmdInitStructure.SDIO_Resp[3] = 0;
/* 判断卡的类型 */
if(SDIO_SECURE_DIGITAL_IO_CARD != CardType)
{
/* Send CMD2 ALL_SEND_CID
* 响应：R2，对应CID寄存器
*/
SDIO_CmdInitStructure.SDIO_Argument = 0x0;
SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_ALL_SEND_CID;
SDIO_CmdInitStructure.SDIO_Flags = SDIO_RESP_R2;
SDIO_SendCommand(SDIOx, &SDIO_CmdInitStructure, 100);
errorstatus = CmdResp2Error(SDIOx, &SDIO_CmdInitStructure);
if(SD_OK != errorstatus)
{
return (errorstatus);
}
/* 将返回的CID信息存储起来 */
CID_Tab[0] = SDIO_CmdInitStructure.SDIO_Resp[0];
CID_Tab[1] = SDIO_CmdInitStructure.SDIO_Resp[1];
CID_Tab[2] = SDIO_CmdInitStructure.SDIO_Resp[2];
CID_Tab[3] = SDIO_CmdInitStructure.SDIO_Resp[3];
}
/********************************************************************************************************/
if((SDIO_STD_CAPACITY_SD_CARD_V1_1 == CardType) || (SDIO_STD_CAPACITY_SD_CARD_V2_0 == CardType) ||
(SDIO_SECURE_DIGITAL_IO_COMBO_CARD == CardType) || (SDIO_HIGH_CAPACITY_SD_CARD == CardType)) /* 使用的是2.0的卡 */
{
/* Send CMD3 SET_REL_ADDR with argument 0
* SD Card publishes its RCA.
* 响应：R6，对应RCA寄存器
*/
SDIO_CmdInitStructure.SDIO_Argument = 0x00;
SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SET_REL_ADDR;
SDIO_CmdInitStructure.SDIO_Flags = SDIO_RESP_R6;
/* 把接收到的卡相对地址存起来 */
errorstatus = CmdResp6Error(SDIOx, &SDIO_CmdInitStructure, &rca);
if(SD_OK != errorstatus)
{
return (errorstatus);
}
}
/********************************************************************************************************/
if(SDIO_SECURE_DIGITAL_IO_CARD != CardType)
{
RCA = rca + 1;
/* Send CMD9 SEND_CSD with argument as card's RCA
* 响应:R2 对应寄存器CSD(Card-Specific Data)
*/
SDIO_CmdInitStructure.SDIO_Argument = (uint32_t)(RCA << 16);
SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SEND_CSD;
SDIO_CmdInitStructure.SDIO_Flags = SDIO_RESP_R2;
SDIO_CmdInitStructure.SDIO_Resp[0] = 0;
SDIO_CmdInitStructure.SDIO_Resp[1] = 0;
SDIO_CmdInitStructure.SDIO_Resp[2] = 0;
SDIO_CmdInitStructure.SDIO_Resp[3] = 0;
SDIO_SendCommand(SDIOx, &SDIO_CmdInitStructure, 0);
errorstatus = CmdResp2Error(SDIOx, &SDIO_CmdInitStructure);
if(SD_OK != errorstatus)
{
return (errorstatus);
}
CSD_Tab[0] = SDIO_CmdInitStructure.SDIO_Resp[0];
CSD_Tab[1] = SDIO_CmdInitStructure.SDIO_Resp[1];
CSD_Tab[2] = SDIO_CmdInitStructure.SDIO_Resp[2];
CSD_Tab[3] = SDIO_CmdInitStructure.SDIO_Resp[3];
}
/********************************************************************************************************/
/*全部卡初始化成功 */
errorstatus = SD_OK;
return (errorstatus);
}
/*
* 函数名：SD_GetCardInfo
* 描述 ：获取SD卡的具体信息
* 输入 ：-cardinfo 指向SD_CardInfo结构体的指针
* 这个结构里面包含了SD卡的具体信息
* 输出 ：-SD_Error SD卡错误代码
* 成功时则为 SD_OK
* 调用 ：外部调用
*/
static SD_Error SD_GetCardInfo(SD_CardInfo * cardinfo)
{
SD_Error errorstatus = SD_OK;
uint8_t tmp = 0;
cardinfo->CardType = (uint8_t)CardType;
cardinfo->RCA = (uint16_t)RCA;
/*!< Byte 0 */
tmp = (uint8_t)((CSD_Tab[0] & 0xFF000000) >> 24);
cardinfo->SD_csd.CSDStruct = (tmp & 0xC0) >> 6;
cardinfo->SD_csd.SysSpecVersion = (tmp & 0x3C) >> 2;
cardinfo->SD_csd.Reserved1 = tmp & 0x03;
/*!< Byte 1 */
tmp = (uint8_t)((CSD_Tab[0] & 0x00FF0000) >> 16);
cardinfo->SD_csd.TAAC = tmp;
/*!< Byte 2 */
tmp = (uint8_t)((CSD_Tab[0] & 0x0000FF00) >> 8);
cardinfo->SD_csd.NSAC = tmp;
/*!< Byte 3 */
tmp = (uint8_t)(CSD_Tab[0] & 0x000000FF);
cardinfo->SD_csd.MaxBusClkFrec = tmp;
/*!< Byte 4 */
tmp = (uint8_t)((CSD_Tab[1] & 0xFF000000) >> 24);
cardinfo->SD_csd.CardComdClasses = tmp << 4;
/*!< Byte 5 */
tmp = (uint8_t)((CSD_Tab[1] & 0x00FF0000) >> 16);
cardinfo->SD_csd.CardComdClasses |= (tmp & 0xF0) >> 4;
cardinfo->SD_csd.RdBlockLen = tmp & 0x0F;
/*!< Byte 6 */
tmp = (uint8_t)((CSD_Tab[1] & 0x0000FF00) >> 8);
cardinfo->SD_csd.PartBlockRead = (tmp & 0x80) >> 7;
cardinfo->SD_csd.WrBlockMisalign = (tmp & 0x40) >> 6;
cardinfo->SD_csd.RdBlockMisalign = (tmp & 0x20) >> 5;
cardinfo->SD_csd.DSRImpl = (tmp & 0x10) >> 4;
cardinfo->SD_csd.Reserved2 = 0; /*!< Reserved */
if((CardType == SDIO_STD_CAPACITY_SD_CARD_V1_1) || (CardType == SDIO_STD_CAPACITY_SD_CARD_V2_0))
{
cardinfo->SD_csd.DeviceSize = (tmp & 0x03) << 10;
/*!< Byte 7 */
tmp = (uint8_t)(CSD_Tab[1] & 0x000000FF);
cardinfo->SD_csd.DeviceSize |= (tmp) << 2;
/*!< Byte 8 */
tmp = (uint8_t)((CSD_Tab[2] & 0xFF000000) >> 24);
cardinfo->SD_csd.DeviceSize |= (tmp & 0xC0) >> 6;
cardinfo->SD_csd.MaxRdCurrentVDDMin = (tmp & 0x38) >> 3;
cardinfo->SD_csd.MaxRdCurrentVDDMax = (tmp & 0x07);
/*!< Byte 9 */
tmp = (uint8_t)((CSD_Tab[2] & 0x00FF0000) >> 16);
cardinfo->SD_csd.MaxWrCurrentVDDMin = (tmp & 0xE0) >> 5;
cardinfo->SD_csd.MaxWrCurrentVDDMax = (tmp & 0x1C) >> 2;
cardinfo->SD_csd.DeviceSizeMul = (tmp & 0x03) << 1;
/*!< Byte 10 */
tmp = (uint8_t)((CSD_Tab[2] & 0x0000FF00) >> 8);
cardinfo->SD_csd.DeviceSizeMul |= (tmp & 0x80) >> 7;
cardinfo->CardCapacity = (cardinfo->SD_csd.DeviceSize + 1);
cardinfo->CardCapacity *= (1 << (cardinfo->SD_csd.DeviceSizeMul + 2));
cardinfo->CardBlockSize = 1 << (cardinfo->SD_csd.RdBlockLen);
cardinfo->CardCapacity *= cardinfo->CardBlockSize;
}
else if(CardType == SDIO_HIGH_CAPACITY_SD_CARD)
{
/*!< Byte 7 */
tmp = (uint8_t)(CSD_Tab[1] & 0x000000FF);
cardinfo->SD_csd.DeviceSize = (tmp & 0x3F) << 16;
/*!< Byte 8 */
tmp = (uint8_t)((CSD_Tab[2] & 0xFF000000) >> 24);
cardinfo->SD_csd.DeviceSize |= (tmp << 8);
/*!< Byte 9 */
tmp = (uint8_t)((CSD_Tab[2] & 0x00FF0000) >> 16);
cardinfo->SD_csd.DeviceSize |= (tmp);
/*!< Byte 10 */
tmp = (uint8_t)((CSD_Tab[2] & 0x0000FF00) >> 8);
cardinfo->CardCapacity = (uint64_t)(cardinfo->SD_csd.DeviceSize + 1) * 512 * 1024;
cardinfo->CardBlockSize = 512;
}
cardinfo->SD_csd.EraseGrSize = (tmp & 0x40) >> 6;
cardinfo->SD_csd.EraseGrMul = (tmp & 0x3F) << 1;
/*!< Byte 11 */
tmp = (uint8_t)(CSD_Tab[2] & 0x000000FF);
cardinfo->SD_csd.EraseGrMul |= (tmp & 0x80) >> 7;
cardinfo->SD_csd.WrProtectGrSize = (tmp & 0x7F);
/*!< Byte 12 */
tmp = (uint8_t)((CSD_Tab[3] & 0xFF000000) >> 24);
cardinfo->SD_csd.WrProtectGrEnable = (tmp & 0x80) >> 7;
cardinfo->SD_csd.ManDeflECC = (tmp & 0x60) >> 5;
cardinfo->SD_csd.WrSpeedFact = (tmp & 0x1C) >> 2;
cardinfo->SD_csd.MaxWrBlockLen = (tmp & 0x03) << 2;
/*!< Byte 13 */
tmp = (uint8_t)((CSD_Tab[3] & 0x00FF0000) >> 16);
cardinfo->SD_csd.MaxWrBlockLen |= (tmp & 0xC0) >> 6;
cardinfo->SD_csd.WriteBlockPaPartial = (tmp & 0x20) >> 5;
cardinfo->SD_csd.Reserved3 = 0;
cardinfo->SD_csd.ContentProtectAppli = (tmp & 0x01);
/*!< Byte 14 */
tmp = (uint8_t)((CSD_Tab[3] & 0x0000FF00) >> 8);
cardinfo->SD_csd.FileFormatGrouop = (tmp & 0x80) >> 7;
cardinfo->SD_csd.CopyFlag = (tmp & 0x40) >> 6;
cardinfo->SD_csd.PermWrProtect = (tmp & 0x20) >> 5;
cardinfo->SD_csd.TempWrProtect = (tmp & 0x10) >> 4;
cardinfo->SD_csd.FileFormat = (tmp & 0x0C) >> 2;
cardinfo->SD_csd.ECC = (tmp & 0x03);
/*!< Byte 15 */
tmp = (uint8_t)(CSD_Tab[3] & 0x000000FF);
cardinfo->SD_csd.CSD_CRC = (tmp & 0xFE) >> 1;
cardinfo->SD_csd.Reserved4 = 1;
/*!< Byte 0 */
tmp = (uint8_t)((CID_Tab[0] & 0xFF000000) >> 24);
cardinfo->SD_cid.ManufacturerID = tmp;
/*!< Byte 1 */
tmp = (uint8_t)((CID_Tab[0] & 0x00FF0000) >> 16);
cardinfo->SD_cid.OEM_AppliID = tmp << 8;
/*!< Byte 2 */
tmp = (uint8_t)((CID_Tab[0] & 0x000000FF00) >> 8);
cardinfo->SD_cid.OEM_AppliID |= tmp;
/*!< Byte 3 */
tmp = (uint8_t)(CID_Tab[0] & 0x000000FF);
cardinfo->SD_cid.ProdName1 = tmp << 24;
/*!< Byte 4 */
tmp = (uint8_t)((CID_Tab[1] & 0xFF000000) >> 24);
cardinfo->SD_cid.ProdName1 |= tmp << 16;
/*!< Byte 5 */
tmp = (uint8_t)((CID_Tab[1] & 0x00FF0000) >> 16);
cardinfo->SD_cid.ProdName1 |= tmp << 8;
/*!< Byte 6 */
tmp = (uint8_t)((CID_Tab[1] & 0x0000FF00) >> 8);
cardinfo->SD_cid.ProdName1 |= tmp;
/*!< Byte 7 */
tmp = (uint8_t)(CID_Tab[1] & 0x000000FF);
cardinfo->SD_cid.ProdName2 = tmp;
/*!< Byte 8 */
tmp = (uint8_t)((CID_Tab[2] & 0xFF000000) >> 24);
cardinfo->SD_cid.ProdRev = tmp;
/*!< Byte 9 */
tmp = (uint8_t)((CID_Tab[2] & 0x00FF0000) >> 16);
cardinfo->SD_cid.ProdSN = tmp << 24;
/*!< Byte 10 */
tmp = (uint8_t)((CID_Tab[2] & 0x0000FF00) >> 8);
cardinfo->SD_cid.ProdSN |= tmp << 16;
/*!< Byte 11 */
tmp = (uint8_t)(CID_Tab[2] & 0x000000FF);
cardinfo->SD_cid.ProdSN |= tmp << 8;
/*!< Byte 12 */
tmp = (uint8_t)((CID_Tab[3] & 0xFF000000) >> 24);
cardinfo->SD_cid.ProdSN |= tmp;
/*!< Byte 13 */
tmp = (uint8_t)((CID_Tab[3] & 0x00FF0000) >> 16);
cardinfo->SD_cid.Reserved1 |= (tmp & 0xF0) >> 4;
cardinfo->SD_cid.ManufactDate = (tmp & 0x0F) << 8;
/*!< Byte 14 */
tmp = (uint8_t)((CID_Tab[3] & 0x0000FF00) >> 8);
cardinfo->SD_cid.ManufactDate |= tmp;
/*!< Byte 15 */
tmp = (uint8_t)(CID_Tab[3] & 0x000000FF);
cardinfo->SD_cid.CID_CRC = (tmp & 0xFE) >> 1;
cardinfo->SD_cid.Reserved2 = 1;
return (errorstatus);
}
/*
* 函数名：SD_SelectDeselect
* 描述 ：利用cmd7，选择卡相对地址为addr的卡，取消选择其它卡
* 如果addr = 0,则取消选择所有的卡
* 输入 ：-addr 选择卡的地址
* 输出 ：-SD_Error SD卡错误代码
* 成功时则为 SD_OK
* 调用 ：外部调用
*/
static SD_Error SD_SelectDeselect(SDIO_TypeDef * SDIOx, uint32_t addr)
{
SD_Error errorstatus = SD_OK;
SDIO_CmdInitTypeDef SDIO_CmdInitStructure;
/*!< Send CMD7 SDIO_SEL_DESEL_CARD */
SDIO_CmdInitStructure.SDIO_Argument = addr;
SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SEL_DESEL_CARD;
SDIO_CmdInitStructure.SDIO_Flags = SDIO_RESP_R1;
SDIO_SendCommand(SDIOx, &SDIO_CmdInitStructure, 0);
errorstatus = CmdResp1Error(SDIOx, &SDIO_CmdInitStructure);
return (errorstatus);
}
static SD_Error SD_SetBlockSize(SDIO_TypeDef * SDIOx, uint32_t BlockSize)
{
SD_Error errorstatus = SD_OK;
SDIO_CmdInitTypeDef SDIO_CmdInitStructure;
SDIO_CmdInitStructure.SDIO_Argument = BlockSize;
SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SET_BLOCKLEN;
SDIO_CmdInitStructure.SDIO_Flags = SDIO_RESP_R1;
SDIO_SendCommand(SDIOx, &SDIO_CmdInitStructure, 0);
errorstatus = CmdResp1Error(SDIOx, &SDIO_CmdInitStructure);
return (errorstatus);
}
/*
* 函数名：SD_EnableWideBusOperation
* 描述 ：配置卡的数据宽度(但得看卡是否支持)
* 输入 ：-WideMode 指定SD卡的数据线宽
* 具体可配置如下
* @arg MMCSD_BUS_WIDTH_8: 8-bit data transfer (Only for MMC)
* @arg MMCSD_BUS_WIDTH_4: 4-bit data transfer
* @arg MMCSD_BUS_WIDTH_1: 1-bit data transfer (默认)
* 输出 ：-SD_Error SD卡错误代码
* 成功时则为 SD_OK
* 调用 ：外部调用
*/
static SD_Error SD_EnableWideBusOperation(SDIO_TypeDef * SDIOx, uint8_t WideMode)
{
SD_Error errorstatus = SD_OK;
/*!< MMC Card doesn't support this feature */
if(SDIO_MULTIMEDIA_CARD == CardType)
{
errorstatus = SD_UNSUPPORTED_FEATURE;
return (errorstatus);
}
else if((SDIO_STD_CAPACITY_SD_CARD_V1_1 == CardType) || (SDIO_STD_CAPACITY_SD_CARD_V2_0 == CardType) ||
(SDIO_HIGH_CAPACITY_SD_CARD == CardType))
{
if(MMCSD_BUS_WIDTH_8 == WideMode) // 2.0 sd不支持8bits
{
errorstatus = SD_UNSUPPORTED_FEATURE;
return (errorstatus);
}
else if(MMCSD_BUS_WIDTH_4 == WideMode) // 4数据线模式
{
errorstatus = SD_Enable_WideBus(SDIOx, ENABLE); // 使用acmd6设置总线宽度，设置卡的传输方式
if(SD_OK == errorstatus)
{
SDIO_Set_Ios(SDIOx, 4000000, WideMode);
}
}
else // 单数据线模式
{
errorstatus = SD_Enable_WideBus(SDIOx, DISABLE);
if(SD_OK == errorstatus)
{
SDIO_Set_Ios(SDIOx, 4000000, WideMode);
}
}
}
return (errorstatus);
}
/*
* 函数名：SD_Enable_WideBus
* 描述 ：使能或关闭SDIO的4bit模式
* 输入 ：新状态 ENABLE 或DISABLE
* 输出 ：SD错误类型
*/
static SD_Error SD_Enable_WideBus(SDIO_TypeDef * SDIOx, FunctionalState NewState)
{
SD_Error errorstatus = SD_OK;
SDIO_CmdInitTypeDef SDIO_CmdInitStructure;
/*!< If wide bus operation to be enabled */
if(NewState == ENABLE)
{
/*!< Send CMD55 APP_CMD with argument as card's RCA.*/
SDIO_CmdInitStructure.SDIO_Argument = (uint32_t)RCA << 16;
SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_APP_CMD;
SDIO_CmdInitStructure.SDIO_Flags = SDIO_RESP_R1;
SDIO_SendCommand(SDIOx, &SDIO_CmdInitStructure, 0);
errorstatus = CmdResp1Error(SDIOx, &SDIO_CmdInitStructure);
if(errorstatus != SD_OK)
{
return (errorstatus);
}
/*!< Send ACMD6 APP_CMD with argument as 2 for wide bus mode */
/*开启4bit模式的命令acmd6*/
SDIO_CmdInitStructure.SDIO_Argument = 0x2;
SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_APP_SD_SET_BUSWIDTH;
SDIO_CmdInitStructure.SDIO_Flags = SDIO_RESP_R1;
SDIO_SendCommand(SDIOx, &SDIO_CmdInitStructure, 0);
errorstatus = CmdResp1Error(SDIOx, &SDIO_CmdInitStructure);
if(errorstatus != SD_OK)
{
errorstatus = SD_REQUEST_NOT_APPLICABLE;
}
return errorstatus;
} /*!< If wide bus operation to be disabled */
else
{
/*!< Send CMD55 APP_CMD with argument as card's RCA.*/
SDIO_CmdInitStructure.SDIO_Argument = (uint32_t)RCA << 16;
SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_APP_CMD;
SDIO_CmdInitStructure.SDIO_Flags = SDIO_RESP_R1;
SDIO_SendCommand(SDIOx, &SDIO_CmdInitStructure, 0);
errorstatus = CmdResp1Error(SDIOx, &SDIO_CmdInitStructure);
if(errorstatus != SD_OK)
{
return (errorstatus);
}
/*!< Send ACMD6 APP_CMD with argument as 0 for single bus mode */
SDIO_CmdInitStructure.SDIO_Argument = 0x00;
SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_APP_SD_SET_BUSWIDTH;
SDIO_CmdInitStructure.SDIO_Flags = SDIO_RESP_R1;
SDIO_SendCommand(SDIOx, &SDIO_CmdInitStructure, 0);
errorstatus = CmdResp1Error(SDIOx, &SDIO_CmdInitStructure);
if(errorstatus != SD_OK)
{
errorstatus = SD_REQUEST_NOT_APPLICABLE;
}
return errorstatus;
}
}
static SD_Error CmdResp1Error(SDIO_TypeDef * SDIOx, SDIO_CmdInitTypeDef * SDIO_CmdInitStruct)
{
uint32_t count = 0;
uint8_t respIndex = 0;
do
{
count++;
respIndex = (SDIO_Get_STA(SDIOx) >> 11) & 0x3f;
delay_us(80);
} while((count < SD_TIMEOUT) && (respIndex != SDIO_CmdInitStruct->SDIO_CmdIndex));
if(count >= SD_TIMEOUT)
{
return SD_CMD_RSP_TIMEOUT;
}
return SD_OK;
}
static SD_Error CmdResp2Error(SDIO_TypeDef * SDIOx, SDIO_CmdInitTypeDef * SDIO_CmdInitStruct)
{
uint32_t count = 0;
uint8_t respIndex = 0;
do
{
count++;
SDIO_SendCommand(SDIOx, SDIO_CmdInitStruct, 500);
respIndex = (SDIO_Get_STA(SDIOx) >> 11) & 0x3f;
} while((count < SD_TIMEOUT) && (respIndex != 63));
if(count >= SD_TIMEOUT)
{
return SD_CMD_RSP_TIMEOUT;
}
return SD_OK;
}
static SD_Error CmdResp6Error(SDIO_TypeDef * SDIOx, SDIO_CmdInitTypeDef * SDIO_CmdInitStruct, uint16_t * prca)
{
uint32_t count = 0;
uint8_t respIndex = 0;
uint32_t response_r0;
do
{
count++;
SDIO_SendCommand(SDIOx, SDIO_CmdInitStruct, 0);
respIndex = (SDIO_Get_STA(SDIOx) >> 11) & 0x3f;
if(respIndex == SDIO_CmdInitStruct->SDIO_CmdIndex)
{
response_r0 = SDIO_CmdInitStruct->SDIO_Resp[0];
if(SD_ALLZERO == (response_r0 &
(SD_R6_GENERAL_UNKNOWN_ERROR |
SD_R6_ILLEGAL_CMD |
SD_R6_COM_CRC_FAILED)))
{
*prca = (uint16_t)(response_r0 >> 16); // 右移16位，就是接收到的返回rca
break;
}
}
} while((count < SD_TIMEOUT));
if(count >= SD_TIMEOUT)
{
return SD_CMD_RSP_TIMEOUT;
}
return SD_OK;
}
static SD_Error CmdResp7Error(SDIO_TypeDef * SDIOx, SDIO_CmdInitTypeDef * SDIO_CmdInitStruct)
{
uint32_t count = 0;
uint32_t response = 0;
uint32_t state = 0;
uint8_t respIndex = 0;
do
{
count++;
SDIO_SendCommand(SDIOx, SDIO_CmdInitStruct, 0);
response = SDIO_CmdInitStruct->SDIO_Resp[0] & 0xAA;
state = SDIO_Get_STA(SDIOx);
respIndex = (state >> 11) & 0x3f;
} while((!response) && (count < SD_TIMEOUT) && (respIndex != 8));
if(count >= SD_TIMEOUT)
{
return SD_CMD_RSP_TIMEOUT;
}
return SD_OK;
}
SD_Error SD_ReadBlock(SDIO_TypeDef * SDIOx,
uint8_t * ReadBuff,
uint32_t ReadAddr,
uint16_t BlockSize)
{
SDIO_CmdInitTypeDef SDIO_CmdInitStructure;
SDIO_DataInitTypeDef SDIO_DataInitStructure;
SD_Error errorstatus = SD_OK;
if(NULL == ReadBuff)
{
return SD_INVALID_PARAMETER;
}
if(CardType == SDIO_HIGH_CAPACITY_SD_CARD) // 大容量卡
{
BlockSize = 512;
ReadAddr >>= 9;
}
if((BlockSize > 0) && (BlockSize <= 2048) && ((BlockSize & (BlockSize - 1)) == 0))
{
errorstatus = SD_SetBlockSize(SDIOx, BlockSize);
if(errorstatus != SD_OK)
{
return errorstatus;
}
}
else
{
return SD_INVALID_PARAMETER;
}
SDIO_DataInitStructure.blksize = BlockSize;
SDIO_DataInitStructure.blks = 1;
SDIO_DataInitStructure.buf = ReadBuff;
SDIO_DataInitStructure.flags = SDIO_DATA_DIR_READ;
SDIO_CmdInitStructure.SDIO_Argument = ReadAddr;
SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_READ_SINGLE_BLOCK;
SDIO_CmdInitStructure.SDIO_Flags = SDIO_RESP_R1;
SDIO_SendCommand_and_Data(SDIOx, &SDIO_DataInitStructure, &SDIO_CmdInitStructure, 0);
errorstatus = CmdResp1Error(SDIOx, &SDIO_CmdInitStructure);
return errorstatus;
}
SD_Error SD_ReadMultiBlocks(SDIO_TypeDef * SDIOx,
uint8_t * ReadBuff,
uint32_t ReadAddr,
uint16_t BlockSize,
uint32_t NumberOfBlocks)
{
SDIO_CmdInitTypeDef SDIO_CmdInitStructure;
SDIO_DataInitTypeDef SDIO_DataInitStructure;
SD_Error errorstatus = SD_OK;
if(NULL == ReadBuff)
{
return SD_INVALID_PARAMETER;
}
if(CardType == SDIO_HIGH_CAPACITY_SD_CARD) // 大容量卡
{
BlockSize = 512;
ReadAddr >>= 9;
}
if((BlockSize > 0) && (BlockSize <= 2048) && ((BlockSize & (BlockSize - 1)) == 0))
{
errorstatus = SD_SetBlockSize(SDIOx, BlockSize);
if(errorstatus != SD_OK)
{
return errorstatus;
}
}
else
{
return SD_INVALID_PARAMETER;
}
SDIO_DataInitStructure.blksize = BlockSize;
SDIO_DataInitStructure.blks = NumberOfBlocks;
SDIO_DataInitStructure.buf = ReadBuff;
SDIO_DataInitStructure.flags = SDIO_DATA_DIR_READ;
SDIO_CmdInitStructure.SDIO_Argument = ReadAddr;
SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_READ_MULT_BLOCK;
SDIO_CmdInitStructure.SDIO_Flags = SDIO_RESP_R1;
SDIO_SendCommand_and_Data(SDIOx, &SDIO_DataInitStructure, &SDIO_CmdInitStructure, 0);
errorstatus = CmdResp1Error(SDIOx, &SDIO_CmdInitStructure);
if(errorstatus != SD_OK)
{
return errorstatus;
}
SDIO_CmdInitStructure.SDIO_Argument = 0;
SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_STOP_TRANSMISSION;
SDIO_CmdInitStructure.SDIO_Flags = SDIO_RESP_R1B;
SDIO_SendCommand(SDIOx, &SDIO_CmdInitStructure, 0);
errorstatus = CmdResp1Error(SDIOx, &SDIO_CmdInitStructure);
if(errorstatus != SD_OK)
{
return errorstatus;
}
return errorstatus;
}
SD_Error SD_WriteBlock(SDIO_TypeDef * SDIOx,
uint8_t * WriteBuff,
uint32_t WriteAddr,
uint16_t BlockSize)
{
SDIO_CmdInitTypeDef SDIO_CmdInitStructure;
SDIO_DataInitTypeDef SDIO_DataInitStructure;
SD_Error errorstatus = SD_OK;
if(NULL == WriteBuff)
{
return SD_INVALID_PARAMETER;
}
if(CardType == SDIO_HIGH_CAPACITY_SD_CARD) // 大容量卡
{
BlockSize = 512;
WriteAddr >>= 9;
}
if((BlockSize > 0) && (BlockSize <= 2048) && ((BlockSize & (BlockSize - 1)) == 0))
{
errorstatus = SD_SetBlockSize(SDIOx, BlockSize);
if(errorstatus != SD_OK)
{
return errorstatus;
}
}
else
{
return SD_INVALID_PARAMETER;
}
SDIO_DataInitStructure.blksize = BlockSize;
SDIO_DataInitStructure.blks = 1;
SDIO_DataInitStructure.buf = WriteBuff;
SDIO_DataInitStructure.flags = SDIO_DATA_DIR_WRITE;
SDIO_CmdInitStructure.SDIO_Argument = WriteAddr;
SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_WRITE_SINGLE_BLOCK;
SDIO_CmdInitStructure.SDIO_Flags = SDIO_RESP_R1;
SDIO_SendCommand_and_Data(SDIOx, &SDIO_DataInitStructure, &SDIO_CmdInitStructure, 0);