基于STM32采用CS创世 SD NAND完成FATFS文件系统移植与测试（中篇）_基于stm32的简单项目
目录：
1.基于stm32f4
2.基于stm32的
3.基于stm32的c语言
4.基于stm32f103c8t6
5.基于stm32f103
6.基于stm32的c语言程序设计详解
7.基于stm32的简单项目
8.基于stm32的i2c程序
9.基于stm32课设
10.基于stm32的设计
1.基于stm32f4
原标题：基于STM32采用CS创世 SD NAND完成FATFS文件系统移植与测试（中篇）3.2 SPI硬件时序方式上面的3.1小节是采用SPI模拟时序驱动SD NAND，STM32本身集成有SPI硬件模块，可以直接利用STM32硬件SPI接口读写。
2.基于stm32的
下面贴出底层的适配代码 上面贴出的驱动代码里，已经将驱动接口部分和协议逻辑部分区分开了，替换底层的SIP读写代码非常方便（1）主要替换的代码/*函数功能：SPI初始化(模拟SPI)硬件连接：MISO--->PB14。
3.基于stm32的c语言
MOSI--->PB15SCLK--->PB13*/void SPI_Init(void){/*开启时钟*/RCC->APB1ENR|=1
4.基于stm32f103c8t6
GPIOB->CRH&=0X000FFFFF; //清除寄存器GPIOB->CRH|=0XB8B00000;GPIOB->ODR|=0X7<<13; //PB13/14/15上拉--输出高电平/*SPI2基本配置*/
5.基于stm32f103
SPI2->CR1=0X0; //清空寄存器SPI2->CR1|=0
6.基于stm32的c语言程序设计详解
SPI2->CR1|=1
7.基于stm32的简单项目
SPI2->CR1|=1
8.基于stm32的i2c程序
}/*函数功能：SPI读写一个字节*/u8 SPI_ReadWriteOneByte(u8 data_tx){u16 cnt=0;while((SPI2->SR&1<<1)==0) //等待发送区空--等待发送缓冲为空
9.基于stm32课设
{cnt++;if(cnt>=65530)return 0; //超时退出 u16=2个字节}SPI2->DR=data_tx; //发送一个bytecnt=0;while((SPI2->SR&1<<0)==0) //等待接收完一个byte
10.基于stm32的设计
{cnt++;if(cnt>=65530)return 0; //超时退出}return SPI2->DR; //返回收到的数据}函数功能：SD卡底层接口,通过SPI时序向SD卡读写一个字节函数参数：data是要写入的数据
返 回 值：读到的数据*/u8 SDCardReadWriteOneByte(u8 DataTx){return SPI_ReadWriteOneByte(DataTx);}（2）运行效果
3.3 SDIO方式如果想提高SD NAND的读写速度，可以采用SDIO协议，STM32本身有SDIO的硬件支持，配置好SDIO的寄存器即可完成SD NAND的操作 SDIO的数据线都比SPI多，读写速度自然没法比的。
下面贴出STM32F103ZE上面编写的SDIO协议读写SD NAND的驱动代码。（1）整体工程代码
（2）sdio.c#include "sdio_sdcard.h"#include "string.h"#include "sys.h"#include "usart.h"static u8 CardType=SDIO_STD_CAPACITY_SD_CARD_V1_1; //SD卡类型（默认为1.x卡）
static u32 CSD_Tab[4],CID_Tab[4],RCA=0; //SD卡CSD,CID以及相对地址(RCA)数据static u8 DeviceMode=SD_DMA_MODE; //工作模式,注意,工作模式必须通过SDIO_SdCardSetDeviceMode,后才算数.这里只是定义一个默认的模式(SD_DMA_MODE)
static u8 StopCondition=0; //是否发送停止传输标志位,DMA多块读写的时候用到volatile SDIO_SD_ERROR_INFO TransferError=SD_OK; //数据传输错误标志,DMA读写时使用
volatile u8 TransferEnd=0; //传输结束标志,DMA读写时使用SD_CardInfo SDCardInfo; //SD卡信息//SDIO_SdCardReadDiskSector/SDIO_SdCardWriteDiskSector函数专用buf,当这两个函数的数据缓存区地址不是4字节对齐的时候,
//需要用到该数组,确保数据缓存区地址是4字节对齐的.__align(4) u8 SDIO_DATA_BUFFER[512];/*SD卡与开发板的SDIO方式接线关系如下:DATA0---PC8DATA1---PC9
DATA2---PC10DATA3---PC11CLK-----PC1CMD-----PD2*//*函数功能:SDIO方式初始化SD卡返回值 :错误代码;(0,无错误)*/SDIO_SD_ERROR_INFO SDIO_SdCardInit(void)
{u8 clkdiv=0;SDIO_SD_ERROR_INFO errorstatus=SD_OK;//SDIO IO口初始化RCC->APB2ENR|=1
RCC->AHBENR|=1
GPIOD->CRL&=0XFFFFF0FF;GPIOD->CRL|=0X00000B00; //PD2复用输出,PD7 上拉输入//SDIO外设寄存器设置为默认值SDIO->POWER=0x00000000;
SDIO->CLKCR=0x00000000;SDIO->ARG=0x00000000;SDIO->CMD=0x00000000;SDIO->DTIMER=0x00000000;SDIO->DLEN=0x00000000;
SDIO->DCTRL=0x00000000;SDIO->ICR=0x00C007FF;SDIO->MASK=0x00000000;STM32_NVIC_SetPriority(SDIO_IRQn,0,0); //SDIO中断配置
errorstatus=SDIO_SdPowerON(); //SD卡上电SDIO_SdCardInitializeCards(); //初始化SD卡SDIO_SdCardGetInfo(&SDCardInfo); //获取卡信息
SDIO_SdCardSelectAddr((u32)(SDCardInfo.RCA<<16));//选中SD卡SDIO_SdCardEnableWideBusOperation(1); //4位宽度,如果是MMC卡,则不能用4位模式
if((errorstatus==SD_OK)||(SDIO_MULTIMEDIA_CARD==CardType)){if(SDCardInfo.CardType==SDIO_STD_CAPACITY_SD_CARD_V1_1||SDCardInfo.CardType==SDIO_STD_CAPACITY_SD_CARD_V2_0)
{clkdiv=SDIO_TRANSFER_CLK_DIV+6; //V1.1/V2.0卡，设置最高72/12=6Mhz}else clkdiv=SDIO_TRANSFER_CLK_DIV; //SDHC等其他卡，设置最高72/6=12Mhz
SDIO_ClockSet(clkdiv); //设置时钟频率,SDIO时钟计算公式:SDIO_CK时钟=SDIOCLK/[clkdiv+2];其中,SDIOCLK固定为48Mhzerrorstatus=SDIO_SdCardSetDeviceMode(SD_POLLING_MODE); //设置为查询模式
}return errorstatus;}/*函数功能: SDIO时钟初始化设置函数参数:clkdiv:时钟分频系数CK时钟=SDIOCLK/[clkdiv+2];(SDIOCLK时钟固定为48Mhz)
*/void SDIO_ClockSet(u8 clkdiv){u32 tmpreg=SDIO->CLKCR;tmpreg&=0XFFFFFF00;tmpreg|=clkdiv;SDIO->CLKCR=tmpreg;
}/*函数功能: SDIO发送命令函数函数参数:cmdindex:命令索引,低六位有效waitrsp:期待的相应.00/10,无响应;01,短响应;11,长响应arg:参数*/void SDIO_SendCmd(u8 cmdindex,u8 waitrsp,u32 arg)
{u32 tmpreg;SDIO->ARG=arg;tmpreg=SDIO->CMD;tmpreg&=0XFFFFF800; //清除index和waitrsptmpreg|=cmdindex&0X3F; //设置新的index
tmpreg|=waitrsp<<6; //设置新的wait rsptmpreg|=0<<8; //无等待tmpreg|=1
函数参数:datatimeout:超时时间设置datalen:传输数据长度,低25位有效,必须为块大小的整数倍blksize:块大小.实际大小为:2^blksize字节dir:数据传输方向:0,控制器到卡;1,卡到控制器;
*/void SDIO_SendDataConfig(u32 datatimeout,u32 datalen,u8 blksize,u8 dir){u32 tmpreg;SDIO->DTIMER=datatimeout;
SDIO->DLEN=datalen&0X1FFFFFF; //低25位有效tmpreg=SDIO->DCTRL;tmpreg&=0xFFFFFF08; //清除之前的设置.tmpreg|=blksize<<4; //设置块大小
tmpreg|=0<<2; //块数据传输tmpreg|=(dir&0X01)<<1; //方向控制tmpreg|=1
函数功能:卡上电查询所有SDIO接口上的卡设备,并查询其电压和配置时钟返回值:错误代码;(0,无错误)*/SDIO_SD_ERROR_INFO SDIO_SdPowerON(void){u8 i=0;SDIO_SD_ERROR_INFO errorstatus=SD_OK;
u32 response=0,count=0,validvoltage=0;u32 SDType=SD_STD_CAPACITY;//配置CLKCR寄存器SDIO->CLKCR=0; //清空CLKCR之前的设置
SDIO->CLKCR|=0
SDIO->CLKCR|=0
SDIO->CLKCR|=1<<8; //SDIOCK使能for(i=0;i<74;i++){SDIO_SendCmd(SD_CMD_GO_IDLE_STATE,0,0);//发送CMD0进入IDLE STAGE模式命令.
errorstatus=SDIO_CmdErrorCheck();if(errorstatus==SD_OK)break;}if(errorstatus)return errorstatus;//返回错误状态
SDIO_SendCmd(SDIO_SEND_IF_COND,1,SD_CHECK_PATTERN);//发送CMD8,短响应,检查SD卡接口特性.//arg[11:8]:01,支持电压范围,2.7~3.6V
//arg[7:0]:默认0XAA//返回响应7errorstatus=SDIO_CmdResp7Error(); //等待R7响应if(errorstatus==SD_OK) //R7响应正常{CardType=SDIO_STD_CAPACITY_SD_CARD_V2_0; //SD 2.0卡
SDType=SD_HIGH_CAPACITY; //高容量卡}SDIO_SendCmd(SD_CMD_APP_CMD,1,0); //发送CMD55,短响应errorstatus=SDIO_CmdResp1Error(SD_CMD_APP_CMD); //等待R1响应
if(errorstatus==SD_OK)//SD2.0/SD 1.1{//SD卡,发送ACMD41 SD_APP_OP_COND,参数为:0x80100000while((!validvoltage)&&(count
{SDIO_SendCmd(SD_CMD_APP_CMD,1,0); //发送CMD55,短响应errorstatus=SDIO_CmdResp1Error(SD_CMD_APP_CMD); //等待R1响应
if(errorstatus!=SD_OK)return errorstatus; //响应错误SDIO_SendCmd(SD_CMD_SD_APP_OP_COND,1,SD_VOLTAGE_WINDOW_SD|SDType);//发送ACMD41,短响应
errorstatus=SDIO_CmdResp3Error(); //等待R3响应if(errorstatus!=SD_OK)return errorstatus; //响应错误response=SDIO->RESP1;; //得到响应
validvoltage=(((response>>31)==1)?1:0); //判断SD卡上电是否完成count++;}if(count>=SD_MAX_VOLT_TRIAL){errorstatus=SD_INVALID_VOLTRANGE;
return errorstatus;}if(response&=SD_HIGH_CAPACITY){CardType=SDIO_HIGH_CAPACITY_SD_CARD;}}return(errorstatus);
}/*函数功能: SD卡断电返回值:错误代码;(0,无错误)*/SDIO_SD_ERROR_INFO SD_PowerOFF(void){SDIO->POWER&=~(3<<0);//SDIO电源关闭,时钟停止
return SD_OK;}/*函数功能:初始化所有的卡,并让卡进入就绪状态返回值:错误代码*/SDIO_SD_ERROR_INFO SDIO_SdCardInitializeCards(void){SDIO_SD_ERROR_INFO errorstatus=SD_OK;
u16 rca = 0x01;if((SDIO->POWER&0X03)==0)return SD_REQUEST_NOT_APPLICABLE;//检查电源状态,确保为上电状态if(SDIO_SECURE_DIGITAL_IO_CARD!=CardType) //非SECURE_DIGITAL_IO_CARD
{SDIO_SendCmd(SD_CMD_ALL_SEND_CID,3,0); //发送CMD2,取得CID,长响应errorstatus=SDIO_CmdResp2Error(); //等待R2响应if(errorstatus!=SD_OK)return errorstatus; //响应错误
CID_Tab[0]=SDIO->RESP1;CID_Tab[1]=SDIO->RESP2;CID_Tab[2]=SDIO->RESP3;CID_Tab[3]=SDIO->RESP4;}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))//判断卡类型
{SDIO_SendCmd(SD_CMD_SET_REL_ADDR,1,0); //发送CMD3,短响应errorstatus=SDIO_CmdResp6Error(SD_CMD_SET_REL_ADDR,&rca);//等待R6响应
if(errorstatus!=SD_OK)return errorstatus; //响应错误}if(SDIO_MULTIMEDIA_CARD==CardType){SDIO_SendCmd(SD_CMD_SET_REL_ADDR,1,(u32)(rca<<16));//发送CMD3,短响应
errorstatus=SDIO_CmdResp2Error(); //等待R2响应if(errorstatus!=SD_OK)return errorstatus; //响应错误}if(SDIO_SECURE_DIGITAL_IO_CARD!=CardType) //非SECURE_DIGITAL_IO_CARD
{RCA = rca;SDIO_SendCmd(SD_CMD_SEND_CSD,3,(u32)(rca<<16));//发送CMD9+卡RCA,取得CSD,长响应errorstatus=SDIO_CmdResp2Error(); //等待R2响应
if(errorstatus!=SD_OK)return errorstatus; //响应错误CSD_Tab[0]=SDIO->RESP1;CSD_Tab[1]=SDIO->RESP2;CSD_Tab[2]=SDIO->RESP3;
CSD_Tab[3]=SDIO->RESP4;}return SD_OK;//卡初始化成功}/*函数功能:得到卡信息函数参数:cardinfo:卡信息存储区返回值:错误状态*/SDIO_SD_ERROR_INFO SDIO_SdCardGetInfo(SD_CardInfo *cardinfo)
{SDIO_SD_ERROR_INFO errorstatus=SD_OK;u8 tmp=0;cardinfo->CardType=(u8)CardType; //卡类型cardinfo->RCA=(u16)RCA; //卡RCA值
tmp=(u8)((CSD_Tab[0]&0xFF000000)>>24);cardinfo->SD_csd.CSDStruct=(tmp&0xC0)>>6; //CSD结构cardinfo->SD_csd.SysSpecVersion=(tmp&0x3C)>>2; //2.0协议还没定义这部分(为保留),应该是后续协议定义的
cardinfo->SD_csd.Reserved1=tmp&0x03; //2个保留位tmp=(u8)((CSD_Tab[0]&0x00FF0000)>>16); //第1个字节cardinfo->SD_csd.TAAC=tmp; //数据读时间1
tmp=(u8)((CSD_Tab[0]&0x0000FF00)>>8); //第2个字节cardinfo->SD_csd.NSAC=tmp; //数据读时间2tmp=(u8)(CSD_Tab[0]&0x000000FF); //第3个字节
cardinfo->SD_csd.MaxBusClkFrec=tmp; //传输速度tmp=(u8)((CSD_Tab[1]&0xFF000000)>>24); //第4个字节cardinfo->SD_csd.CardComdClasses=tmp<<4; //卡指令类高四位
tmp=(u8)((CSD_Tab[1]&0x00FF0000)>>16); //第5个字节cardinfo->SD_csd.CardComdClasses|=(tmp&0xF0)>>4;//卡指令类低四位
cardinfo->SD_csd.RdBlockLen=tmp&0x0F; //最大读取数据长度tmp=(u8)((CSD_Tab[1]&0x0000FF00)>>8); //第6个字节cardinfo->SD_csd.PartBlockRead=(tmp&0x80)>>7; //允许分块读
cardinfo->SD_csd.WrBlockMisalign=(tmp&0x40)>>6; //写块错位cardinfo->SD_csd.RdBlockMisalign=(tmp&0x20)>>5; //读块错位
cardinfo->SD_csd.DSRImpl=(tmp&0x10)>>4;cardinfo->SD_csd.Reserved2=0; //保留if((CardType==SDIO_STD_CAPACITY_SD_CARD_V1_1)||(CardType==SDIO_STD_CAPACITY_SD_CARD_V2_0)||(SDIO_MULTIMEDIA_CARD==CardType))//标准1.1/2.0卡/MMC卡
{cardinfo->SD_csd.DeviceSize=(tmp&0x03)
tmp=(u8)((CSD_Tab[2]&0xFF000000)>>24); //第8个字节cardinfo->SD_csd.DeviceSize|=(tmp&0xC0)>>6;cardinfo->SD_csd.MaxRdCurrentVDDMin=(tmp&0x38)>>3;
cardinfo->SD_csd.MaxRdCurrentVDDMax=(tmp&0x07);tmp=(u8)((CSD_Tab[2]&0x00FF0000)>>16); //第9个字节cardinfo->SD_csd.MaxWrCurrentVDDMin=(tmp&0xE0)>>5;
cardinfo->SD_csd.MaxWrCurrentVDDMax=(tmp&0x1C)>>2;cardinfo->SD_csd.DeviceSizeMul=(tmp&0x03)<<1;//C_SIZE_MULT
tmp=(u8)((CSD_Tab[2]&0x0000FF00)>>8); //第10个字节cardinfo->SD_csd.DeviceSizeMul|=(tmp&0x80)>>7;cardinfo->CardCapacity=(cardinfo->SD_csd.DeviceSize+1);//计算卡容量
cardinfo->CardCapacity*=(1CardBlockSize=1
cardinfo->CardCapacity*=cardinfo->CardBlockSize;}else if(CardType==SDIO_HIGH_CAPACITY_SD_CARD) //高容量卡
{tmp=(u8)(CSD_Tab[1]&0x000000FF); //第7个字节cardinfo->SD_csd.DeviceSize=(tmp&0x3F)<>24); //第8个字节
cardinfo->SD_csd.DeviceSize|=(tmp<>16); //第9个字节cardinfo->SD_csd.DeviceSize|=(tmp);
tmp=(u8)((CSD_Tab[2]&0x0000FF00)>>8); //第10个字节cardinfo->CardCapacity=(long long)(cardinfo->SD_csd.DeviceSize+1)*512*1024;//计算卡容量
cardinfo->CardBlockSize=512; //块大小固定为512字节}cardinfo->SD_csd.EraseGrSize=(tmp&0x40)>>6;cardinfo->SD_csd.EraseGrMul=(tmp&0x3F)<<1;
tmp=(u8)(CSD_Tab[2]&0x000000FF); //第11个字节cardinfo->SD_csd.EraseGrMul|=(tmp&0x80)>>7;cardinfo->SD_csd.WrProtectGrSize=(tmp&0x7F);
tmp=(u8)((CSD_Tab[3]&0xFF000000)>>24); //第12个字节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)<>16); //第13个字节
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);tmp=(u8)((CSD_Tab[3]&0x0000FF00)>>8); //第14个字节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);tmp=(u8)(CSD_Tab[3]&0x000000FF); //第15个字节
cardinfo->SD_csd.CSD_CRC=(tmp&0xFE)>>1;cardinfo->SD_csd.Reserved4=1;tmp=(u8)((CID_Tab[0]&0xFF000000)>>24); //第0个字节
cardinfo->SD_cid.ManufacturerID=tmp;tmp=(u8)((CID_Tab[0]&0x00FF0000)>>16); //第1个字节cardinfo->SD_cid.OEM_AppliID=tmp<<8;
tmp=(u8)((CID_Tab[0]&0x000000FF00)>>8); //第2个字节cardinfo->SD_cid.OEM_AppliID|=tmp;tmp=(u8)(CID_Tab[0]&0x000000FF); //第3个字节
cardinfo->SD_cid.ProdName1=tmp<>24); //第4个字节cardinfo->SD_cid.ProdName1|=tmp<<16;
tmp=(u8)((CID_Tab[1]&0x00FF0000)>>16); //第5个字节cardinfo->SD_cid.ProdName1|=tmp<>8); //第6个字节
cardinfo->SD_cid.ProdName1|=tmp;tmp=(u8)(CID_Tab[1]&0x000000FF); //第7个字节cardinfo->SD_cid.ProdName2=tmp;
tmp=(u8)((CID_Tab[2]&0xFF000000)>>24); //第8个字节cardinfo->SD_cid.ProdRev=tmp;tmp=(u8)((CID_Tab[2]&0x00FF0000)>>16); //第9个字节
cardinfo->SD_cid.ProdSN=tmp<>8); //第10个字节cardinfo->SD_cid.ProdSN|=tmp<<16;
tmp=(u8)(CID_Tab[2]&0x000000FF); //第11个字节cardinfo->SD_cid.ProdSN|=tmp<>24); //第12个字节
cardinfo->SD_cid.ProdSN|=tmp;tmp=(u8)((CID_Tab[3]&0x00FF0000)>>16); //第13个字节cardinfo->SD_cid.Reserved1|=(tmp&0xF0)>>4;
cardinfo->SD_cid.ManufactDate=(tmp&0x0F)<>8); //第14个字节cardinfo->SD_cid.ManufactDate|=tmp;
tmp=(u8)(CID_Tab[3]&0x000000FF); //第15个字节cardinfo->SD_cid.CID_CRC=(tmp&0xFE)>>1;cardinfo->SD_cid.Reserved2=1;
return errorstatus;}/*函数功能: 设置SDIO总线宽度函数参数:wmode:位宽模式.0,1位数据宽度;1,4位数据宽度;2,8位数据宽度返回值:SD卡错误状态*/SDIO_SD_ERROR_INFO SDIO_SdCardEnableWideBusOperation(u32 wmode)
{SDIO_SD_ERROR_INFO errorstatus=SD_OK;if((SDIO_STD_CAPACITY_SD_CARD_V1_1==CardType)||(SDIO_STD_CAPACITY_SD_CARD_V2_0==CardType)||(SDIO_HIGH_CAPACITY_SD_CARD==CardType))
{if(wmode>=2)return SD_UNSUPPORTED_FEATURE;//不支持8位模式else{errorstatus=SDIO_SdCardEnWideBus(wmode);if(SD_OK==errorstatus)
{SDIO->CLKCR&=~(3
}}}return errorstatus;}/*函数功能:设置SD卡工作模式返回值:错误状态*/SDIO_SD_ERROR_INFO SDIO_SdCardSetDeviceMode(u32 Mode)
{SDIO_SD_ERROR_INFO errorstatus = SD_OK;if((Mode==SD_DMA_MODE)||(Mode==SD_POLLING_MODE))DeviceMode=Mode;
else errorstatus=SD_INVALID_PARAMETER;return errorstatus;}/*函数功能:选卡,发送CMD7,选择相对地址(rca)为addr的卡,取消其他卡.如果为0,则都不选择.
函数参数:addr:卡的RCA地址*/SDIO_SD_ERROR_INFO SDIO_SdCardSelectAddr(u32 addr){SDIO_SendCmd(SD_CMD_SEL_DESEL_CARD,1,addr); //发送CMD7,选择卡,短响应
return SDIO_CmdResp1Error(SD_CMD_SEL_DESEL_CARD);}/*函数功能: SD卡读取一个块函数参数:buf:读数据缓存区(必须4字节对齐!!)addr:读取地址
blksize:块大小*/SDIO_SD_ERROR_INFO SDIO_SdCardReadBlock(u8 *buf,long long addr,u16 blksize){SDIO_SD_ERROR_INFO errorstatus=SD_OK;
u8 power;u32 count=0,*tempbuff=(u32*)buf;//转换为u32指针u32 timeout=SDIO_DATATIMEOUT;if(NULL==buf)return SD_INVALID_PARAMETER;
SDIO->DCTRL=0x0; //数据控制寄存器清零(关DMA)if(CardType==SDIO_HIGH_CAPACITY_SD_CARD)//大容量卡{blksize=512;addr>>=9;
}SDIO_SendDataConfig(SD_DATATIMEOUT,0,0,0); //清除DPSM状态机配置if(SDIO->RESP1&SD_CARD_LOCKED)return SD_LOCK_UNLOCK_FAILED;//卡锁了
if((blksize>0)&&(blksize<=2048)&&((blksize&(blksize-1))==0)){power=convert_from_bytes_to_power_of_two(blksize);
SDIO_SendCmd(SD_CMD_SET_BLOCKLEN,1,blksize); //发送CMD16+设置数据长度为blksize,短响应errorstatus=SDIO_CmdResp1Error(SD_CMD_SET_BLOCKLEN); //等待R1响应
if(errorstatus!=SD_OK)return errorstatus; //响应错误}else return SD_INVALID_PARAMETER;SDIO_SendDataConfig(SD_DATATIMEOUT,blksize,power,1); //blksize,卡到控制器
SDIO_SendCmd(SD_CMD_READ_SINGLE_BLOCK,1,addr); //发送CMD17+从addr地址出读取数据,短响应errorstatus=SDIO_CmdResp1Error(SD_CMD_READ_SINGLE_BLOCK);//等待R1响应
if(errorstatus!=SD_OK)return errorstatus; //响应错误if(DeviceMode==SD_POLLING_MODE) //查询模式,轮询数据{// INTX_DISABLE();//关闭总中断(POLLING模式,严禁中断打断SDIO读写操作!!!)
while(!(SDIO->STA&((1<<5)|(1<<1)|(1<<3)|(1<<10)|(1
{for(count=0;countFIFO;}tempbuff+=8;timeout=0X7FFFFF; //读数据溢出时间
}else //处理超时{if(timeout==0)return SD_DATA_TIMEOUT;timeout--;}}if(SDIO->STA&(1
return SD_DATA_TIMEOUT;}else if(SDIO->STA&(1
}else if(SDIO->STA&(1
{SDIO->ICR|=1
tempbuff++;}// INTX_ENABLE();//开启总中断SDIO->ICR=0X5FF; //清除所有标记}else if(DeviceMode==SD_DMA_MODE){SDIO_SdCard_DMAConfig((u32*)buf,blksize,0);
TransferError=SD_OK;StopCondition=0; //单块读,不需要发送停止传输指令TransferEnd=0; //传输结束标置位，在中断服务置1SDIO->MASK|=(1<<1)|(1<<3)|(1<<8)|(1<<5)|(1<<9); //配置需要的中断
SDIO->DCTRL|=1
if(timeout==0)return SD_DATA_TIMEOUT;//超时if(TransferError!=SD_OK)errorstatus=TransferError;}return errorstatus;
}/*函数功能: SD卡读取多个块函数参数:buf:读数据缓存区addr:读取地址blksize:块大小nblks:要读取的块数返回值:错误状态*/__align(4) u32 *tempbuff;SDIO_SD_ERROR_INFO SDIO_SdCardReadMultiBlocks(u8 *buf,long long addr,u16 blksize,u32 nblks)
{SDIO_SD_ERROR_INFO errorstatus=SD_OK;u8 power;u32 count=0;u32 timeout=SDIO_DATATIMEOUT;tempbuff=(u32*)buf; //转换为u32指针
SDIO->DCTRL=0x0; //数据控制寄存器清零(关DMA)if(CardType==SDIO_HIGH_CAPACITY_SD_CARD)//大容量卡{blksize=512;addr>>=9;
}SDIO_SendDataConfig(SD_DATATIMEOUT,0,0,0); //清除DPSM状态机配置if(SDIO->RESP1&SD_CARD_LOCKED)return SD_LOCK_UNLOCK_FAILED;//卡锁了
if((blksize>0)&&(blksize<=2048)&&((blksize&(blksize-1))==0)){power=convert_from_bytes_to_power_of_two(blksize);
SDIO_SendCmd(SD_CMD_SET_BLOCKLEN,1,blksize); //发送CMD16+设置数据长度为blksize,短响应errorstatus=SDIO_CmdResp1Error(SD_CMD_SET_BLOCKLEN); //等待R1响应
if(errorstatus!=SD_OK)return errorstatus; //响应错误}else return SD_INVALID_PARAMETER;if(nblks>1) //多块读{if(nblks*blksize>SD_MAX_DATA_LENGTH)return SD_INVALID_PARAMETER;//判断是否超过最大接收长度
SDIO_SendDataConfig(SD_DATATIMEOUT,nblks*blksize,power,1);//nblks*blksize,512块大小,卡到控制器SDIO_SendCmd(SD_CMD_READ_MULT_BLOCK,1,addr); //发送CMD18+从addr地址出读取数据,短响应
errorstatus=SDIO_CmdResp1Error(SD_CMD_READ_MULT_BLOCK);//等待R1响应if(errorstatus!=SD_OK)return errorstatus; //响应错误
if(DeviceMode==SD_POLLING_MODE){// INTX_DISABLE();//关闭总中断(POLLING模式,严禁中断打断SDIO读写操作!!!)while(!(SDIO->STA&((1<<5)|(1<<1)|(1<<3)|(1<<8)|(1<<9))))//无上溢/CRC/超时/完成(标志)/起始位错误
{if(SDIO->STA&(1<<15)) //接收区半满,表示至少存了8个字{for(count=0;countFIFO;
}tempbuff+=8;timeout=0X7FFFFF; //读数据溢出时间}else //处理超时{if(timeout==0)return SD_DATA_TIMEOUT;timeout--;}
}if(SDIO->STA&(1
{SDIO->ICR|=1
return SD_RX_OVERRUN;}else if(SDIO->STA&(1
}while(SDIO->STA&(1STA&(1<<8)) //接收结束
{if((SDIO_STD_CAPACITY_SD_CARD_V1_1==CardType)||(SDIO_STD_CAPACITY_SD_CARD_V2_0==CardType)||(SDIO_HIGH_CAPACITY_SD_CARD==CardType))
{SDIO_SendCmd(SD_CMD_STOP_TRANSMISSION,1,0); //发送CMD12+结束传输errorstatus=SDIO_CmdResp1Error(SD_CMD_STOP_TRANSMISSION);//等待R1响应
if(errorstatus!=SD_OK)return errorstatus;}}// INTX_ENABLE();//开启总中断SDIO->ICR=0X5FF; //清除所有标记}else if(DeviceMode==SD_DMA_MODE)
{SDIO_SdCard_DMAConfig((u32*)buf,nblks*blksize,0);TransferError=SD_OK;StopCondition=1; //多块读,需要发送停止传输指令
TransferEnd=0; //传输结束标置位，在中断服务置1SDIO->MASK|=(1<<1)|(1<<3)|(1<<8)|(1<<5)|(1
while(((DMA2->ISR&0X2000)==RESET)&&timeout)timeout--;//等待传输完成if(timeout==0)return SD_DATA_TIMEOUT;//超时
while((TransferEnd==0)&&(TransferError==SD_OK));if(TransferError!=SD_OK)errorstatus=TransferError;}}return errorstatus;
}/*函数功能:SD卡写1个块函数参数:buf:数据缓存区addr:写地址blksize:块大小返回值:错误状态*/SDIO_SD_ERROR_INFO SDIO_SdCardWriteBlock(u8 *buf,long long addr, u16 blksize)
{SDIO_SD_ERROR_INFO errorstatus = SD_OK;u8 power=0,cardstate=0;u32 timeout=0,bytestransferred=0;u32 cardstatus=0,count=0,restwords=0;
u32 tlen=blksize; //总长度(字节)u32*tempbuff=(u32*)buf;if(buf==NULL)return SD_INVALID_PARAMETER;//参数错误SDIO->DCTRL=0x0; //数据控制寄存器清零(关DMA)
SDIO_SendDataConfig(SD_DATATIMEOUT,0,0,0); //清除DPSM状态机配置if(SDIO->RESP1&SD_CARD_LOCKED)return SD_LOCK_UNLOCK_FAILED;//卡锁了
if(CardType==SDIO_HIGH_CAPACITY_SD_CARD) //大容量卡{blksize=512;addr>>=9;}if((blksize>0)&&(blksize<=2048)&&((blksize&(blksize-1))==0))
{power=convert_from_bytes_to_power_of_two(blksize);SDIO_SendCmd(SD_CMD_SET_BLOCKLEN,1,blksize); //发送CMD16+设置数据长度为blksize,短响应
errorstatus=SDIO_CmdResp1Error(SD_CMD_SET_BLOCKLEN); //等待R1响应if(errorstatus!=SD_OK)return errorstatus; //响应错误
}else return SD_INVALID_PARAMETER;SDIO_SendCmd(SD_CMD_SEND_STATUS,1,(u32)RCA<<16); //发送CMD13,查询卡的状态,短响应
errorstatus=SDIO_CmdResp1Error(SD_CMD_SEND_STATUS); //等待R1响应if(errorstatus!=SD_OK)return errorstatus;
cardstatus=SDIO->RESP1;timeout=SD_DATATIMEOUT;while(((cardstatus&0x00000100)==0)&&(timeout>0)) //检查READY_FOR_DATA位是否置位
{timeout--;SDIO_SendCmd(SD_CMD_SEND_STATUS,1,(u32)RCA<<16);//发送CMD13,查询卡的状态,短响应errorstatus=SDIO_CmdResp1Error(SD_CMD_SEND_STATUS); //等待R1响应
if(errorstatus!=SD_OK)return errorstatus;cardstatus=SDIO->RESP1;}if(timeout==0)return SD_ERROR;SDIO_SendCmd(SD_CMD_WRITE_SINGLE_BLOCK,1,addr); //发送CMD24,写单块指令,短响应
errorstatus=SDIO_CmdResp1Error(SD_CMD_WRITE_SINGLE_BLOCK);//等待R1响应if(errorstatus!=SD_OK)return errorstatus;
StopCondition=0; //单块写,不需要发送停止传输指令SDIO_SendDataConfig(SD_DATATIMEOUT,blksize,power,0); //blksize, 控制器到卡
timeout=SDIO_DATATIMEOUT;if(DeviceMode == SD_POLLING_MODE){// INTX_DISABLE();//关闭总中断(POLLING模式,严禁中断打断SDIO读写操作!!!)
while(!(SDIO->STA&((1<<10)|(1<<4)|(1<<1)|(1<<3)|(1
{if((tlen-bytestransferred)
for(count=0;countFIFO=*tempbuff;}}else{for(count=0;count<8;count++)
{SDIO->FIFO=*(tempbuff+count);}tempbuff+=8;bytestransferred+=32;}timeout=0X3FFFFFFF; //写数据溢出时间}else{if(timeout==0)return SD_DATA_TIMEOUT;
timeout--;}}if(SDIO->STA&(1
{SDIO->ICR|=1
return SD_TX_UNDERRUN;}else if(SDIO->STA&(1
}// INTX_ENABLE();//开启总中断SDIO->ICR=0X5FF; //清除所有标记}else if(DeviceMode==SD_DMA_MODE){SDIO_SdCard_DMAConfig((u32*)buf,blksize,1);//SDIO DMA配置
TransferError=SD_OK;StopCondition=0; //单块写,不需要发送停止传输指令TransferEnd=0; //传输结束标置位，在中断服务置1SDIO->MASK|=(1<<1)|(1<<3)|(1<<8)|(1<<4)|(1<<9); //配置产生数据接收完成中断
SDIO->DCTRL|=1
{SDIO_SdCardInit(); //重新初始化SD卡,可以解决写入死机的问题return SD_DATA_TIMEOUT; //超时}timeout=SDIO_DATATIMEOUT;while((TransferEnd==0)&&(TransferError==SD_OK)&&timeout)timeout--;
if(timeout==0)return SD_DATA_TIMEOUT; //超时if(TransferError!=SD_OK)return TransferError;}SDIO->ICR=0X5FF; //清除所有标记
errorstatus=SDIO_SdCardProgrammingState(&cardstate);while((errorstatus==SD_OK)&&((cardstate==SD_CARD_PROGRAMMING)||(cardstate==SD_CARD_RECEIVING)))
{errorstatus=SDIO_SdCardProgrammingState(&cardstate);}return errorstatus;}/*函数功能:SD卡写多个块函数参数:buf:数据缓存区
addr:写地址blksize:块大小nblks:要写入的块数返回值:错误状态*/SDIO_SD_ERROR_INFO SDIO_SdCardWriteMultiBlocks(u8 *buf,long long addr,u16 blksize,u32 nblks)
{SDIO_SD_ERROR_INFO errorstatus = SD_OK;u8 power = 0, cardstate = 0;u32 timeout=0,bytestransferred=0;
u32 count = 0, restwords = 0;u32 tlen=nblks*blksize; //总长度(字节)u32 *tempbuff = (u32*)buf;if(buf==NULL)return SD_INVALID_PARAMETER; //参数错误
SDIO->DCTRL=0x0; //数据控制寄存器清零(关DMA)SDIO_SendDataConfig(SD_DATATIMEOUT,0,0,0); //清除DPSM状态机配置if(SDIO->RESP1&SD_CARD_LOCKED)return SD_LOCK_UNLOCK_FAILED;//卡锁了
if(CardType==SDIO_HIGH_CAPACITY_SD_CARD)//大容量卡{blksize=512;addr>>=9;}if((blksize>0)&&(blksize<=2048)&&((blksize&(blksize-1))==0))
{power=convert_from_bytes_to_power_of_two(blksize);SDIO_SendCmd(SD_CMD_SET_BLOCKLEN,1,blksize); //发送CMD16+设置数据长度为blksize,短响应
errorstatus=SDIO_CmdResp1Error(SD_CMD_SET_BLOCKLEN); //等待R1响应if(errorstatus!=SD_OK)return errorstatus; //响应错误
}else return SD_INVALID_PARAMETER;if(nblks>1){if(nblks*blksize>SD_MAX_DATA_LENGTH)return SD_INVALID_PARAMETER;
if((SDIO_STD_CAPACITY_SD_CARD_V1_1==CardType)||(SDIO_STD_CAPACITY_SD_CARD_V2_0==CardType)||(SDIO_HIGH_CAPACITY_SD_CARD==CardType))
{//提高性能SDIO_SendCmd(SD_CMD_APP_CMD,1,(u32)RCA<<16); //发送ACMD55,短响应errorstatus=SDIO_CmdResp1Error(SD_CMD_APP_CMD); //等待R1响应
if(errorstatus!=SD_OK)return errorstatus;SDIO_SendCmd(SD_CMD_SET_BLOCK_COUNT,1,nblks); //发送CMD23,设置块数量,短响应
errorstatus=SDIO_CmdResp1Error(SD_CMD_SET_BLOCK_COUNT);//等待R1响应if(errorstatus!=SD_OK)return errorstatus;
}SDIO_SendCmd(SD_CMD_WRITE_MULT_BLOCK,1,addr); //发送CMD25,多块写指令,短响应errorstatus=SDIO_CmdResp1Error(SD_CMD_WRITE_MULT_BLOCK); //等待R1响应
if(errorstatus!=SD_OK)return errorstatus;SDIO_SendDataConfig(SD_DATATIMEOUT,nblks*blksize,power,0);//blksize, 控制器到卡
if(DeviceMode==SD_POLLING_MODE){timeout=SDIO_DATATIMEOUT;while(!(SDIO->STA&((1<<4)|(1<<1)|(1<<8)|(1<<3)|(1<<9))))//下溢/CRC/数据结束/超时/起始位错误
{if(SDIO->STA&(1<<14)) //发送区半空,表示至少存了8字(32字节){if((tlen-bytestransferred)
for(count=0;countFIFO=*tempbuff;}}else //发送区半空,可以发送至少8字(32字节)数据
{for(count=0;countFIFO=*(tempbuff+count);}tempbuff+=SD_HALFFIFO;bytestransferred+=SD_HALFFIFOBYTES;
}timeout=0X3FFFFFFF; //写数据溢出时间}else{if(timeout==0)return SD_DATA_TIMEOUT;timeout--;}}if(SDIO->STA&(1<<3)) //数据超时错误
{SDIO->ICR|=1
return SD_DATA_CRC_FAIL;}else if(SDIO->STA&(1
}else if(SDIO->STA&(1
{if((SDIO_STD_CAPACITY_SD_CARD_V1_1==CardType)||(SDIO_STD_CAPACITY_SD_CARD_V2_0==CardType)||(SDIO_HIGH_CAPACITY_SD_CARD==CardType))
{SDIO_SendCmd(SD_CMD_STOP_TRANSMISSION,1,0); //发送CMD12+结束传输errorstatus=SDIO_CmdResp1Error(SD_CMD_STOP_TRANSMISSION);//等待R1响应
if(errorstatus!=SD_OK)return errorstatus;}}// INTX_ENABLE();//开启总中断SDIO->ICR=0X5FF; //清除所有标记}else if(DeviceMode==SD_DMA_MODE)
{SDIO_SdCard_DMAConfig((u32*)buf,nblks*blksize,1);//SDIO DMA配置TransferError=SD_OK;StopCondition=1; //多块写,需要发送停止传输指令
TransferEnd=0; //传输结束标置位，在中断服务置1SDIO->MASK|=(1<<1)|(1<<3)|(1<<8)|(1<<4)|(1
timeout=SDIO_DATATIMEOUT;while(((DMA2->ISR&0X2000)==RESET)&&timeout)timeout--;//等待传输完成if(timeout==0) //超时
{SDIO_SdCardInit(); //重新初始化SD卡,可以解决写入死机的问题return SD_DATA_TIMEOUT; //超时}timeout=SDIO_DATATIMEOUT;while((TransferEnd==0)&&(TransferError==SD_OK)&&timeout)timeout--;
if(timeout==0)return SD_DATA_TIMEOUT; //超时if(TransferError!=SD_OK)return TransferError;}}SDIO->ICR=0X5FF; //清除所有标记
errorstatus=SDIO_SdCardProgrammingState(&cardstate);while((errorstatus==SD_OK)&&((cardstate==SD_CARD_PROGRAMMING)||(cardstate==SD_CARD_RECEIVING)))
{errorstatus=SDIO_SdCardProgrammingState(&cardstate);}return errorstatus;}/*函数功能: SDIO中断服务函数*/void SDIO_IRQHandler(void)
{SDIO_SdCardProcessIRQSrc();//处理所有SDIO相关中断}/*函数功能: SDIO中断处理函数函数参数: 处理SDIO传输过程中的各种中断事务返回值:错误代码*/SDIO_SD_ERROR_INFO SDIO_SdCardProcessIRQSrc(void)
{if(SDIO->STA&(1<<8))//接收完成中断{if(StopCondition==1){SDIO_SendCmd(SD_CMD_STOP_TRANSMISSION,1,0); //发送CMD12,结束传输
TransferError=SDIO_CmdResp1Error(SD_CMD_STOP_TRANSMISSION);}else TransferError = SD_OK;SDIO->ICR|=1<<8;//清除完成中断标记
SDIO->MASK&=~((1<<1)|(1<<3)|(1<<8)|(1<<14)|(1<<15)|(1<<4)|(1<<5)|(1<<9));//关闭相关中断TransferEnd = 1;return(TransferError);
}if(SDIO->STA&(1
TransferError = SD_DATA_CRC_FAIL;return(SD_DATA_CRC_FAIL);}if(SDIO->STA&(1
SDIO->MASK&=~((1<<1)|(1<<3)|(1<<8)|(1<<14)|(1<<15)|(1<<4)|(1<<5)|(1<<9));//关闭相关中断TransferError = SD_DATA_TIMEOUT;
return(SD_DATA_TIMEOUT);}if(SDIO->STA&(1
TransferError = SD_RX_OVERRUN;return(SD_RX_OVERRUN);}if(SDIO->STA&(1
SDIO->MASK&=~((1<<1)|(1<<3)|(1<<8)|(1<<14)|(1<<15)|(1<<4)|(1<<5)|(1<<9));//关闭相关中断TransferError = SD_TX_UNDERRUN;
return(SD_TX_UNDERRUN);}if(SDIO->STA&(1
TransferError = SD_START_BIT_ERR;return(SD_START_BIT_ERR);}return(SD_OK);}/*函数功能: 检查CMD0的执行状态返回值: sd卡错误码
*/SDIO_SD_ERROR_INFO SDIO_CmdErrorCheck(void){SDIO_SD_ERROR_INFO errorstatus = SD_OK;u32 timeout=SDIO_CMD0TIMEOUT;
while(timeout--){if(SDIO->STA&(1
return errorstatus;}/*函数功能: 检查R7响应的错误状态函数参数: 返回值:sd卡错误码*/SDIO_SD_ERROR_INFO SDIO_CmdResp7Error(void){
SDIO_SD_ERROR_INFO errorstatus=SD_OK;u32 status;u32 timeout=SDIO_CMD0TIMEOUT;while(timeout--){status=SDIO->STA;
if(status&((1<<0)|(1<<2)|(1<<6)))break;//CRC错误/命令响应超时/已经收到响应(CRC校验成功)}if((timeout==0)||(status&(1<<2))) //响应超时
{errorstatus=SD_CMD_RSP_TIMEOUT; //当前卡不是2.0兼容卡,或者不支持设定的电压范围SDIO->ICR|=1<<2; //清除命令响应超时标志return errorstatus;
}if(status&1
函数参数:cmd:当前命令返回值:sd卡错误码*/SDIO_SD_ERROR_INFO SDIO_CmdResp1Error(u8 cmd){u32 status;while(1){status=SDIO->STA;
if(status&((1<<0)|(1<<2)|(1<<6)))break;//CRC错误/命令响应超时/已经收到响应(CRC校验成功)}if(status&(1
return SD_CMD_RSP_TIMEOUT;}if(status&(1
SDIO->ICR=0X5FF; //清除标记return (SDIO_SD_ERROR_INFO)(SDIO->RESP1&SD_OCR_ERRORBITS);//返回卡响应}/*函数功能: 检查R3响应的错误状态
返回值: 错误状态*/SDIO_SD_ERROR_INFO SDIO_CmdResp3Error(void){u32 status;while(1){status=SDIO->STA;if(status&((1<<0)|(1<<2)|(1<<6)))break;//CRC错误/命令响应超时/已经收到响应(CRC校验成功)
}if(status&(1
return SD_OK;}/*函数功能: 检查R2响应的错误状态返回值:错误状态*/SDIO_SD_ERROR_INFO SDIO_CmdResp2Error(void){SDIO_SD_ERROR_INFO errorstatus=SD_OK;
u32 status;u32 timeout=SDIO_CMD0TIMEOUT;while(timeout--){status=SDIO->STA;if(status&((1<<0)|(1<<2)|(1<<6)))break;//CRC错误/命令响应超时/已经收到响应(CRC校验成功)
}if((timeout==0)||(status&(1
return errorstatus;}if(status&1
return errorstatus;}/*函数功能: 检查R6响应的错误状态函数参数:cmd:之前发送的命令prca:卡返回的RCA地址返回值:错误状态*/SDIO_SD_ERROR_INFO SDIO_CmdResp6Error(u8 cmd,u16*prca)
{SDIO_SD_ERROR_INFO errorstatus=SD_OK;u32 status;u32 rspr1;while(1){status=SDIO->STA;if(status&((1<<0)|(1<<2)|(1<<6)))break;//CRC错误/命令响应超时/已经收到响应(CRC校验成功)
}if(status&(1
{SDIO->ICR|=1
}SDIO->ICR=0X5FF; //清除所有标记rspr1=SDIO->RESP1; //得到响应if(SD_ALLZERO==(rspr1&(SD_R6_GENERAL_UNKNOWN_ERROR|SD_R6_ILLEGAL_CMD|SD_R6_COM_CRC_FAILED)))
{*prca=(u16)(rspr1>>16); //右移16位得到,rcareturn errorstatus;}if(rspr1&SD_R6_GENERAL_UNKNOWN_ERROR)return SD_GENERAL_UNKNOWN_ERROR;
if(rspr1&SD_R6_ILLEGAL_CMD)return SD_ILLEGAL_CMD;if(rspr1&SD_R6_COM_CRC_FAILED)return SD_COM_CRC_FAILED;
return errorstatus;}/*函数功能:SDIO使能宽总线模式函数参数:enx:0,不使能;1,使能;返回值:错误状态*/SDIO_SD_ERROR_INFO SDIO_SdCardEnWideBus(u8 enx)
{SDIO_SD_ERROR_INFO errorstatus = SD_OK;u32 scr[2]={0,0};u8 arg=0X00;if(enx)arg=0X02;else arg=0X00;if(SDIO->RESP1&SD_CARD_LOCKED)return SD_LOCK_UNLOCK_FAILED;//SD卡处于LOCKED状态
errorstatus=SDIO_SdCardFindSCR(RCA,scr); //得到SCR寄存器数据if(errorstatus!=SD_OK)return errorstatus;if((scr[1]&SD_WIDE_BUS_SUPPORT)!=SD_ALLZERO) //支持宽总线
{SDIO_SendCmd(SD_CMD_APP_CMD,1,(u32)RCA<<16); //发送CMD55+RCA,短响应errorstatus=SDIO_CmdResp1Error(SD_CMD_APP_CMD);
if(errorstatus!=SD_OK)return errorstatus;SDIO_SendCmd(SD_CMD_APP_SD_SET_BUSWIDTH,1,arg);//发送ACMD6,短响应,参数:10,4位;00,1位.
errorstatus=SDIO_CmdResp1Error(SD_CMD_APP_SD_SET_BUSWIDTH);return errorstatus;}else return SD_REQUEST_NOT_APPLICABLE; //不支持宽总线设置
}/*函数功能: 检查卡是否正在执行写操作函数参数: pstatus:当前状态返回值:错误代码*/SDIO_SD_ERROR_INFO SDIO_SdCardProgrammingState(u8 *pstatus)
{vu32 respR1 = 0, status = 0;SDIO_SendCmd(SD_CMD_SEND_STATUS,1,(u32)RCA
while(!(status&((1<<0)|(1<<6)|(1
return SD_CMD_CRC_FAIL;}if(status&(1
if(SDIO->RESPCMD!=SD_CMD_SEND_STATUS)return SD_ILLEGAL_CMD;SDIO->ICR=0X5FF; //清除所有标记respR1=SDIO->RESP1;
*pstatus=(u8)((respR1>>9)&0x0000000F);return SD_OK;}/*函数功能: 读取当前卡状态函数参数:pcardstatus:卡状态返回值 :错误代码*/SDIO_SD_ERROR_INFO SDIO_SdCardSendStatus(uint32_t *pcardstatus)
{SDIO_SD_ERROR_INFO errorstatus = SD_OK;if(pcardstatus==NULL){errorstatus=SD_INVALID_PARAMETER;return errorstatus;
}SDIO_SendCmd(SD_CMD_SEND_STATUS,1,RCA<<16); //发送CMD13,短响应errorstatus=SDIO_CmdResp1Error(SD_CMD_SEND_STATUS); //查询响应状态
if(errorstatus!=SD_OK)return errorstatus;*pcardstatus=SDIO->RESP1;//读取响应值return errorstatus;}/*函数功能: 返回SD卡的状态
返回值 : SD卡状态*/SDCardState SDIO_SdCardGetState(void){u32 resp1=0;if(SDIO_SdCardSendStatus(&resp1)!=SD_OK)return SD_CARD_ERROR;
else return (SDCardState)((resp1>>9) & 0x0F);}/*函数功能:查找SD卡的SCR寄存器值函数参数:rca:卡相对地址pscr:数据缓存区(存储SCR内容)返回值:错误状态
*/SDIO_SD_ERROR_INFO SDIO_SdCardFindSCR(u16 rca,u32 *pscr){u32 index = 0;SDIO_SD_ERROR_INFO errorstatus = SD_OK;
u32 tempscr[2]={0,0};SDIO_SendCmd(SD_CMD_SET_BLOCKLEN,1,8); //发送CMD16,短响应,设置Block Size为8字节errorstatus=SDIO_CmdResp1Error(SD_CMD_SET_BLOCKLEN);
if(errorstatus!=SD_OK)return errorstatus;SDIO_SendCmd(SD_CMD_APP_CMD,1,(u32)rca<<16); //发送CMD55,短响应errorstatus=SDIO_CmdResp1Error(SD_CMD_APP_CMD);
if(errorstatus!=SD_OK)return errorstatus;SDIO_SendDataConfig(SD_DATATIMEOUT,8,3,1); //8个字节长度,block为8字节,SD卡到SDIO.
SDIO_SendCmd(SD_CMD_SD_APP_SEND_SCR,1,0); //发送ACMD51,短响应,参数为0errorstatus=SDIO_CmdResp1Error(SD_CMD_SD_APP_SEND_SCR);
if(errorstatus!=SD_OK)return errorstatus;while(!(SDIO->STA&(SDIO_FLAG_RXOVERR|SDIO_FLAG_DCRCFAIL|SDIO_FLAG_DTIMEOUT|SDIO_FLAG_DBCKEND|SDIO_FLAG_STBITERR)))
{if(SDIO->STA&(1=2)break;}
}if(SDIO->STA&(1
{SDIO->ICR|=1
return SD_RX_OVERRUN;}else if(SDIO->STA&(1
}SDIO->ICR=0X5FF; //清除标记//把数据顺序按8位为单位倒过来.*(pscr+1)=((tempscr[0]&SD_0TO7BITS)<<24)|((tempscr[0]&SD_8TO15BITS)<>8)|((tempscr[0]&SD_24TO31BITS)>>24);
*(pscr)=((tempscr[1]&SD_0TO7BITS)<<24)|((tempscr[1]&SD_8TO15BITS)<>8)|((tempscr[1]&SD_24TO31BITS)>>24);
return errorstatus;}/*函数功能: 得到NumberOfBytes以2为底的指数函数参数: NumberOfBytes:字节数返回值:以2为底的指数值*/u8 convert_from_bytes_to_power_of_two(u16 NumberOfBytes)
{u8 count=0;while(NumberOfBytes!=1){NumberOfBytes>>=1;count++;}return count;}/*函数功能: 配置SDIO DMA函数参数:mbuf:存储器地址
bufsize:传输数据量dir:方向;1,存储器-->SDIO(写数据);0,SDIO-->存储器(读数据);*/void SDIO_SdCard_DMAConfig(u32*mbuf,u32 bufsize,u8 dir)
{DMA2->IFCR|=(0XF
DMA2_Channel4->CCR|=dir
DMA2_Channel4->CCR|=1
DMA2_Channel4->CCR|=2CPAR=(u32)&SDIO->FIFO;//DMA2 外设地址
DMA2_Channel4->CMAR=(u32)mbuf; //DMA2,存储器地址DMA2_Channel4->CCR|=1<<0; //开启DMA通道}/*函数功能: 读SD卡函数参数:buf:读数据缓存区
sector:扇区地址cnt:扇区个数返回值:错误状态;0,正常;其他,错误代码;*/u8 SDIO_SdCardReadDiskSector(u8*buf,u32 sector,u8 cnt){u8 sta=SD_OK;
long long lsector=sector;u8 n;lsector<<=9;if((u32)buf%4!=0){for(n=0;n
memcpy(buf,SDIO_DATA_BUFFER,512);buf+=512;}}else{if(cnt==1)sta=SDIO_SdCardReadBlock(buf,lsector,512); //单个sector的读操作
else sta=SDIO_SdCardReadMultiBlocks(buf,lsector,512,cnt);//多个sector}return sta;}/*函数功能:写SD卡函数参数:buf:写数据缓存区
sector:扇区地址cnt:扇区个数返回值:错误状态;0,正常;其他,错误代码;*/u8 SDIO_SdCardWriteDiskSector(u8*buf,u32 sector,u8 cnt){u8 sta=SD_OK;
u8 n;long long lsector=sector;lsector<<=9;if((u32)buf%4!=0){for(n=0;n
sta=SDIO_SdCardWriteBlock(SDIO_DATA_BUFFER,lsector+512*n,512);//单个sector的写操作buf+=512;}}else{if(cnt==1)sta=SDIO_SdCardWriteBlock(buf,lsector,512); //单个sector的写操作
else sta=SDIO_SdCardWriteMultiBlocks(buf,lsector,512,cnt); //多个sector}return sta;}（3）sdio.h#ifndef __SDIO_SDCARD_H
#define __SDIO_SDCARD_H#include "stm32f10x.h"//SDIO相关标志位#define SDIO_FLAG_CCRCFAIL ((uint32_t)0x00000001)
#define SDIO_FLAG_DCRCFAIL ((uint32_t)0x00000002)#define SDIO_FLAG_CTIMEOUT ((uint32_t)0x00000004)#define SDIO_FLAG_DTIMEOUT ((uint32_t)0x00000008)
#define SDIO_FLAG_TXUNDERR ((uint32_t)0x00000010)#define SDIO_FLAG_RXOVERR ((uint32_t)0x00000020)#define SDIO_FLAG_CMDREND ((uint32_t)0x00000040)
#define SDIO_FLAG_CMDSENT ((uint32_t)0x00000080)#define SDIO_FLAG_DATAEND ((uint32_t)0x00000100)#define SDIO_FLAG_STBITERR ((uint32_t)0x00000200)
#define SDIO_FLAG_DBCKEND ((uint32_t)0x00000400)#define SDIO_FLAG_CMDACT ((uint32_t)0x00000800)#define SDIO_FLAG_TXACT ((uint32_t)0x00001000)
#define SDIO_FLAG_RXACT ((uint32_t)0x00002000)#define SDIO_FLAG_TXFIFOHE ((uint32_t)0x00004000)#define SDIO_FLAG_RXFIFOHF ((uint32_t)0x00008000)
#define SDIO_FLAG_TXFIFOF ((uint32_t)0x00010000)#define SDIO_FLAG_RXFIFOF ((uint32_t)0x00020000)#define SDIO_FLAG_TXFIFOE ((uint32_t)0x00040000)
#define SDIO_FLAG_RXFIFOE ((uint32_t)0x00080000)#define SDIO_FLAG_TXDAVL ((uint32_t)0x00100000)#define SDIO_FLAG_RXDAVL ((uint32_t)0x00200000)
#define SDIO_FLAG_SDIOIT ((uint32_t)0x00400000)#define SDIO_FLAG_CEATAEND ((uint32_t)0x00800000)//用户配置区
//SDIO时钟计算公式:SDIO_CK时钟=SDIOCLK/[clkdiv+2];其中,SDIOCLK一般为72Mhz//使用DMA模式的时候,传输速率可以到24Mhz,不过如果你的卡不是高速卡,可能也会出错
//出错就请降低时钟,使用查询模式的话,推荐SDIO_TRANSFER_CLK_DIV设置为3或者更大#define SDIO_INIT_CLK_DIV 0xB2 //SDIO初始化频率，最大400Kh
#define SDIO_TRANSFER_CLK_DIV 0x04 //SDIO传输频率,该值太小可能会导致读写文件出错//SDIO工作模式定义,通过SDIO_SdCardSetDeviceMode函数设置.
#define SD_POLLING_MODE 0 //查询模式,该模式下,如果读写有问题,建议增大SDIO_TRANSFER_CLK_DIV的设置.#define SD_DMA_MODE 1 //DMA模式,该模式下,如果读写有问题,建议增大SDIO_TRANSFER_CLK_DIV的设置.
//SDIO 各种错误枚举定义typedef enum{//特殊错误定义SD_CMD_CRC_FAIL = (1), /*!< Command response received (but CRC check failed) */
SD_DATA_CRC_FAIL = (2), /*!< Data bock sent/received (CRC check Failed) */SD_CMD_RSP_TIMEOUT = (3), /*!< Command response timeout */
SD_DATA_TIMEOUT = (4), /*!< Data time out */SD_TX_UNDERRUN = (5), /*!< Transmit FIFO under-run */SD_RX_OVERRUN = (6), /*!< Receive FIFO over-run */
SD_START_BIT_ERR = (7), /*!< Start bit not detected on all data signals in widE bus mode */SD_CMD_OUT_OF_RANGE = (8), /*!< CMDs argument was out of range.*/
SD_ADDR_MISALIGNED = (9), /*!< Misaligned address */SD_BLOCK_LEN_ERR = (10), /*!< Transferred block length is not allowed for the card or the number of transferred bytes does not match the block length */
SD_ERASE_SEQ_ERR = (11), /*!< An error in the sequence of erase command occurs.*/SD_BAD_ERASE_PARAM = (12), /*!< An Invalid selection for erase groups */
SD_WRITE_PROT_VIOLATION = (13), /*!< Attempt to program a write protect block */SD_LOCK_UNLOCK_FAILED = (14), /*!< Sequence or password error has been detected in unlock command or if there was an attempt to access a locked card */
SD_COM_CRC_FAILED = (15), /*!< CRC check of the previous command failed */SD_ILLEGAL_CMD = (16), /*!< Command is not legal for the card state */
SD_CARD_ECC_FAILED = (17), /*!< Card internal ECC was applied but failed to correct the data */SD_CC_ERROR = (18), /*!< Internal card controller error */
SD_GENERAL_UNKNOWN_ERROR = (19), /*!< General or Unknown error */SD_STREAM_READ_UNDERRUN = (20), /*!< The card could not sustain data transfer in stream read operation. */
SD_STREAM_WRITE_OVERRUN = (21), /*!< The card could not sustain data programming in stream mode */SD_CID_CSD_OVERWRITE = (22), /*!< CID/CSD overwrite error */
SD_WP_ERASE_SKIP = (23), /*!< only partial address space was erased */SD_CARD_ECC_DISABLED = (24), /*!< Command has been executed without using internal ECC */
SD_ERASE_RESET = (25), /*!< Erase sequence was cleared before executing because an out of erase sequence command was received */
SD_AKE_SEQ_ERROR = (26), /*!< Error in sequence of authentication. */SD_INVALID_VOLTRANGE = (27),SD_ADDR_OUT_OF_RANGE = (28),
SD_SWITCH_ERROR = (29),SD_SDIO_DISABLED = (30),SD_SDIO_FUNCTION_BUSY = (31),SD_SDIO_FUNCTION_FAILED = (32),
SD_SDIO_UNKNOWN_FUNCTION = (33),//标准错误定义SD_INTERNAL_ERROR,SD_NOT_CONFIGURED,SD_REQUEST_PENDING,SD_REQUEST_NOT_APPLICABLE,
SD_INVALID_PARAMETER,SD_UNSUPPORTED_FEATURE,SD_UNSUPPORTED_HW,SD_ERROR,SD_OK = 0} SDIO_SD_ERROR_INFO;
//SD卡CSD寄存器数据typedef struct{u8 CSDStruct; /*!< CSD structure */u8 SysSpecVersion; /*!< System specification version */
u8 Reserved1; /*!< Reserved */u8 TAAC; /*!< Data read access-time 1 */u8 NSAC; /*!< Data read access-time 2 in CLK cycles */
u8 MaxBusClkFrec; /*!< Max. bus clock frequency */u16 CardComdClasses; /*!< Card command classes */u8 RdBlockLen; /*!< Max. read data block length */
u8 PartBlockRead; /*!< Partial blocks for read allowed */u8 WrBlockMisalign; /*!< Write block misalignment */
u8 RdBlockMisalign; /*!< Read block misalignment */u8 DSRImpl; /*!< DSR implemented */u8 Reserved2; /*!< Reserved */
u32 DeviceSize; /*!< Device Size */u8 MaxRdCurrentVDDMin; /*!< Max. read current @ VDD min */u8 MaxRdCurrentVDDMax; /*!< Max. read current @ VDD max */
u8 MaxWrCurrentVDDMin; /*!< Max. write current @ VDD min */u8 MaxWrCurrentVDDMax; /*!< Max. write current @ VDD max */
u8 DeviceSizeMul; /*!< Device size multiplier */u8 EraseGrSize; /*!< Erase group size */u8 EraseGrMul; /*!< Erase group size multiplier */
u8 WrProtectGrSize; /*!< Write protect group size */u8 WrProtectGrEnable; /*!< Write protect group enable */
u8 ManDeflECC; /*!< Manufacturer default ECC */u8 WrSpeedFact; /*!< Write speed factor */u8 MaxWrBlockLen; /*!< Max. write data block length */
u8 WriteBlockPaPartial; /*!< Partial blocks for write allowed */u8 Reserved3; /*!< Reserded */u8 ContentProtectAppli; /*!< Content protection application */
u8 FileFormatGrouop; /*!< File format group */u8 CopyFlag; /*!< Copy flag (OTP) */u8 PermWrProtect; /*!< Permanent write protection */
u8 TempWrProtect; /*!< Temporary write protection */u8 FileFormat; /*!< File Format */u8 ECC; /*!< ECC code */
u8 CSD_CRC; /*!< CSD CRC */u8 Reserved4; /*!< always 1*/} SD_CSD;//SD卡CID寄存器数据typedef struct{u8 ManufacturerID; /*!< ManufacturerID */
u16 OEM_AppliID; /*!< OEM/Application ID */u32 ProdName1; /*!< Product Name part1 */u8 ProdName2; /*!< Product Name part2*/
u8 ProdRev; /*!< Product Revision */u32 ProdSN; /*!< Product Serial Number */u8 Reserved1; /*!< Reserved1 */
u16 ManufactDate; /*!< Manufacturing Date */u8 CID_CRC; /*!< CID CRC */u8 Reserved2; /*!< always 1 */
} SD_CID;//SD卡状态typedef enum{SD_CARD_READY = ((uint32_t)0x00000001),SD_CARD_IDENTIFICATION = ((uint32_t)0x00000002),
SD_CARD_STANDBY = ((uint32_t)0x00000003),SD_CARD_TRANSFER = ((uint32_t)0x00000004),SD_CARD_SENDING = ((uint32_t)0x00000005),
SD_CARD_RECEIVING = ((uint32_t)0x00000006),SD_CARD_PROGRAMMING = ((uint32_t)0x00000007),SD_CARD_DISCONNECTED = ((uint32_t)0x00000008),
SD_CARD_ERROR = ((uint32_t)0x000000FF)}SDCardState;//SD卡信息,包括CSD,CID等数据typedef struct{SD_CSD SD_csd;SD_CID SD_cid;
long long CardCapacity; //SD卡容量,单位:字节,最大支持2^64字节大小的卡.u32 CardBlockSize; //SD卡块大小u16 RCA; //卡相对地址u8 CardType; //卡类型
} SD_CardInfo;extern SD_CardInfo SDCardInfo;//SD卡信息//SDIO 指令集#define SD_CMD_GO_IDLE_STATE ((u8)0)#define SD_CMD_SEND_OP_COND ((u8)1)
#define SD_CMD_ALL_SEND_CID ((u8)2)#define SD_CMD_SET_REL_ADDR ((u8)3) /*!< SDIO_SEND_REL_ADDR for SD Card */
#define SD_CMD_SET_DSR ((u8)4)#define SD_CMD_SDIO_SEN_OP_COND ((u8)5)#define SD_CMD_HS_SWITCH ((u8)6)
#define SD_CMD_SEL_DESEL_CARD ((u8)7)#define SD_CMD_HS_SEND_EXT_CSD ((u8)8)#define SD_CMD_SEND_CSD ((u8)9)
#define SD_CMD_SEND_CID ((u8)10)#define SD_CMD_READ_DAT_UNTIL_STOP ((u8)11) /*!< SD Card doesnt support it */
#define SD_CMD_STOP_TRANSMISSION ((u8)12)#define SD_CMD_SEND_STATUS ((u8)13)#define SD_CMD_HS_BUSTEST_READ ((u8)14)
#define SD_CMD_GO_INACTIVE_STATE ((u8)15)#define SD_CMD_SET_BLOCKLEN ((u8)16)#define SD_CMD_READ_SINGLE_BLOCK ((u8)17)
#define SD_CMD_READ_MULT_BLOCK ((u8)18)#define SD_CMD_HS_BUSTEST_WRITE ((u8)19)#define SD_CMD_WRITE_DAT_UNTIL_STOP ((u8)20)
#define SD_CMD_SET_BLOCK_COUNT ((u8)23)#define SD_CMD_WRITE_SINGLE_BLOCK ((u8)24)#define SD_CMD_WRITE_MULT_BLOCK ((u8)25)
#define SD_CMD_PROG_CID ((u8)26)#define SD_CMD_PROG_CSD ((u8)27)#define SD_CMD_SET_WRITE_PROT ((u8)28)
#define SD_CMD_CLR_WRITE_PROT ((u8)29)#define SD_CMD_SEND_WRITE_PROT ((u8)30)#define SD_CMD_SD_ERASE_GRP_START ((u8)32) /*!< To set the address of the first write
block to be erased. (For SD card only) */#define SD_CMD_SD_ERASE_GRP_END ((u8)33) /*!< To set the address of the last write block of the
continuous range to be erased. (For SD card only) */#define SD_CMD_ERASE_GRP_START ((u8)35) /*!< To set the address of the first write block to be erased.
(For MMC card only spec 3.31) */#define SD_CMD_ERASE_GRP_END ((u8)36) /*!< To set the address of the last write block of the
continuous range to be erased. (For MMC card only spec 3.31) */#define SD_CMD_ERASE ((u8)38)#define SD_CMD_FAST_IO ((u8)39) /*!< SD Card doesnt support it */
#define SD_CMD_GO_IRQ_STATE ((u8)40) /*!< SD Card doesnt support it */#define SD_CMD_LOCK_UNLOCK ((u8)42)
#define SD_CMD_APP_CMD ((u8)55)#define SD_CMD_GEN_CMD ((u8)56)#define SD_CMD_NO_CMD ((u8)64)/*** @brief Following commands are SD Card Specific commands.
* SDIO_APP_CMD ：CMD55 should be sent before sending these commands.*/#define SD_CMD_APP_SD_SET_BUSWIDTH ((u8)6) /*!< For SD Card only */
#define SD_CMD_SD_APP_STAUS ((u8)13) /*!< For SD Card only */#define SD_CMD_SD_APP_SEND_NUM_WRITE_BLOCKS ((u8)22) /*!< For SD Card only */
#define SD_CMD_SD_APP_OP_COND ((u8)41) /*!< For SD Card only */#define SD_CMD_SD_APP_SET_CLR_CARD_DETECT ((u8)42) /*!< For SD Card only */
#define SD_CMD_SD_APP_SEND_SCR ((u8)51) /*!< For SD Card only */#define SD_CMD_SDIO_RW_DIRECT ((u8)52) /*!< For SD I/O Card only */
#define SD_CMD_SDIO_RW_EXTENDED ((u8)53) /*!< For SD I/O Card only *//*** @brief Following commands are SD Card Specific security commands.
* SDIO_APP_CMD should be sent before sending these commands.*/#define SD_CMD_SD_APP_GET_MKB ((u8)43) /*!< For SD Card only */
#define SD_CMD_SD_APP_GET_MID ((u8)44) /*!< For SD Card only */#define SD_CMD_SD_APP_SET_CER_RN1 ((u8)45) /*!< For SD Card only */
#define SD_CMD_SD_APP_GET_CER_RN2 ((u8)46) /*!< For SD Card only */#define SD_CMD_SD_APP_SET_CER_RES2 ((u8)47) /*!< For SD Card only */
#define SD_CMD_SD_APP_GET_CER_RES1 ((u8)48) /*!< For SD Card only */#define SD_CMD_SD_APP_SECURE_READ_MULTIPLE_BLOCK ((u8)18) /*!< For SD Card only */
#define SD_CMD_SD_APP_SECURE_WRITE_MULTIPLE_BLOCK ((u8)25) /*!< For SD Card only */#define SD_CMD_SD_APP_SECURE_ERASE ((u8)38) /*!< For SD Card only */
#define SD_CMD_SD_APP_CHANGE_SECURE_AREA ((u8)49) /*!< For SD Card only */#define SD_CMD_SD_APP_SECURE_WRITE_MKB ((u8)48) /*!< For SD Card only */
//支持的SD卡定义#define SDIO_STD_CAPACITY_SD_CARD_V1_1 ((u32)0x00000000)#define SDIO_STD_CAPACITY_SD_CARD_V2_0 ((u32)0x00000001)
#define SDIO_HIGH_CAPACITY_SD_CARD ((u32)0x00000002)#define SDIO_MULTIMEDIA_CARD ((u32)0x00000003)#define SDIO_SECURE_DIGITAL_IO_CARD ((u32)0x00000004)
#define SDIO_HIGH_SPEED_MULTIMEDIA_CARD ((u32)0x00000005)#define SDIO_SECURE_DIGITAL_IO_COMBO_CARD ((u32)0x00000006)
#define SDIO_HIGH_CAPACITY_MMC_CARD ((u32)0x00000007)//SDIO相关参数定义#define NULL 0#define SDIO_STATIC_FLAGS ((u32)0x000005FF)
#define SDIO_CMD0TIMEOUT ((u32)0x00010000)#define SDIO_DATATIMEOUT ((u32)0xFFFFFFFF)#define SDIO_FIFO_Address ((u32)0x40018080)
//Mask for errors Card Status R1 (OCR Register)#define SD_OCR_ADDR_OUT_OF_RANGE ((u32)0x80000000)#define SD_OCR_ADDR_MISALIGNED ((u32)0x40000000)
#define SD_OCR_BLOCK_LEN_ERR ((u32)0x20000000)#define SD_OCR_ERASE_SEQ_ERR ((u32)0x10000000)#define SD_OCR_BAD_ERASE_PARAM ((u32)0x08000000)
#define SD_OCR_WRITE_PROT_VIOLATION ((u32)0x04000000)#define SD_OCR_LOCK_UNLOCK_FAILED ((u32)0x01000000)
#define SD_OCR_COM_CRC_FAILED ((u32)0x00800000)#define SD_OCR_ILLEGAL_CMD ((u32)0x00400000)#define SD_OCR_CARD_ECC_FAILED ((u32)0x00200000)
#define SD_OCR_CC_ERROR ((u32)0x00100000)#define SD_OCR_GENERAL_UNKNOWN_ERROR ((u32)0x00080000)#define SD_OCR_STREAM_READ_UNDERRUN ((u32)0x00040000)
#define SD_OCR_STREAM_WRITE_OVERRUN ((u32)0x00020000)#define SD_OCR_CID_CSD_OVERWRIETE ((u32)0x00010000)
#define SD_OCR_WP_ERASE_SKIP ((u32)0x00008000)#define SD_OCR_CARD_ECC_DISABLED ((u32)0x00004000)#define SD_OCR_ERASE_RESET ((u32)0x00002000)
#define SD_OCR_AKE_SEQ_ERROR ((u32)0x00000008)#define SD_OCR_ERRORBITS ((u32)0xFDFFE008)//Masks for R6 Response
#define SD_R6_GENERAL_UNKNOWN_ERROR ((u32)0x00002000)#define SD_R6_ILLEGAL_CMD ((u32)0x00004000)#define SD_R6_COM_CRC_FAILED ((u32)0x00008000)
#define SD_VOLTAGE_WINDOW_SD ((u32)0x80100000)#define SD_HIGH_CAPACITY ((u32)0x40000000)#define SD_STD_CAPACITY ((u32)0x00000000)
#define SD_CHECK_PATTERN ((u32)0x000001AA)#define SD_VOLTAGE_WINDOW_MMC ((u32)0x80FF8000)#define SD_MAX_VOLT_TRIAL ((u32)0x0000FFFF)
#define SD_ALLZERO ((u32)0x00000000)#define SD_WIDE_BUS_SUPPORT ((u32)0x00040000)#define SD_SINGLE_BUS_SUPPORT ((u32)0x00010000)
#define SD_CARD_LOCKED ((u32)0x02000000)#define SD_CARD_PROGRAMMING ((u32)0x00000007)#define SD_CARD_RECEIVING ((u32)0x00000006)
#define SD_DATATIMEOUT ((u32)0xFFFFFFFF)#define SD_0TO7BITS ((u32)0x000000FF)#define SD_8TO15BITS ((u32)0x0000FF00)
#define SD_16TO23BITS ((u32)0x00FF0000)#define SD_24TO31BITS ((u32)0xFF000000)#define SD_MAX_DATA_LENGTH ((u32)0x01FFFFFF)
#define SD_HALFFIFO ((u32)0x00000008)#define SD_HALFFIFOBYTES ((u32)0x00000020)//Command Class Supported
#define SD_CCCC_LOCK_UNLOCK ((u32)0x00000080)#define SD_CCCC_WRITE_PROT ((u32)0x00000040)#define SD_CCCC_ERASE ((u32)0x00000020)
//CMD8指令#define SDIO_SEND_IF_COND ((u32)0x00000008)//相关函数定义SDIO_SD_ERROR_INFO SDIO_SdCardInit(void);void SDIO_ClockSet(u8 clkdiv);
void SDIO_SendCmd(u8 cmdindex,u8 waitrsp,u32 arg);void SDIO_SendDataConfig(u32 datatimeout,u32 datalen,u8 blksize,u8 dir);
SDIO_SD_ERROR_INFO SDIO_SdPowerON(void);SDIO_SD_ERROR_INFO SD_PowerOFF(void);SDIO_SD_ERROR_INFO SDIO_SdCardInitializeCards(void);
SDIO_SD_ERROR_INFO SDIO_SdCardGetInfo(SD_CardInfo *cardinfo);SDIO_SD_ERROR_INFO SDIO_SdCardEnableWideBusOperation(u32 wmode);
SDIO_SD_ERROR_INFO SDIO_SdCardSetDeviceMode(u32 mode);SDIO_SD_ERROR_INFO SDIO_SdCardSelectAddr(u32 addr);
SDIO_SD_ERROR_INFO SDIO_SdCardSendStatus(uint32_t *pcardstatus);SDCardState SDIO_SdCardGetState(void);
SDIO_SD_ERROR_INFO SDIO_SdCardReadBlock(u8 *buf,long long addr,u16 blksize);SDIO_SD_ERROR_INFO SDIO_SdCardReadMultiBlocks(u8 *buf,long long addr,u16 blksize,u32 nblks);
SDIO_SD_ERROR_INFO SDIO_SdCardWriteBlock(u8 *buf,long long addr, u16 blksize);SDIO_SD_ERROR_INFO SDIO_SdCardWriteMultiBlocks(u8 *buf,long long addr,u16 blksize,u32 nblks);
SDIO_SD_ERROR_INFO SDIO_SdCardProcessIRQSrc(void);SDIO_SD_ERROR_INFO SDIO_CmdErrorCheck(void);SDIO_SD_ERROR_INFO SDIO_CmdResp7Error(void);
SDIO_SD_ERROR_INFO SDIO_CmdResp1Error(u8 cmd);SDIO_SD_ERROR_INFO SDIO_CmdResp3Error(void);SDIO_SD_ERROR_INFO SDIO_CmdResp2Error(void);
SDIO_SD_ERROR_INFO SDIO_CmdResp6Error(u8 cmd,u16*prca);SDIO_SD_ERROR_INFO SDIO_SdCardEnWideBus(u8 enx);
SDIO_SD_ERROR_INFO SDIO_SdCardProgrammingState(u8 *pstatus);SDIO_SD_ERROR_INFO SDIO_SdCardFindSCR(u16 rca,u32 *pscr);
u8 convert_from_bytes_to_power_of_two(u16 NumberOfBytes);void SDIO_SdCard_DMAConfig(u32*mbuf,u32 bufsize,u8 dir);
u8 SDIO_SdCardReadDiskSector(u8*buf,u32 sector,u8 cnt); //读SD卡,fatfs/usb调用u8 SDIO_SdCardWriteDiskSector(u8*buf,u32 sector,u8 cnt); //写SD卡,fatfs/usb调用
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