vivado硬件配置：勾选上SD0，SD1，FLASH和PS_UART
生成.bit，导入SDK，分别建硬件测试工程
1，EMMC裸机读写测试
方法：使用了 XILINX SDK 库函数实现读写，先往 EMMC 里面写 1024 个数据，然后读出来对比；
#include <stdio.h> #include "xparameters.h" #include "xil_exception.h" #include "xsdps.h" #include "xil_printf.h" static XSdPs ps7_EMMC; XSdPs_Config * EMMC_Config; u8 WR_Buf[1024]; u8 RD_Buf[1024]; u8 Emmc_ExtCsd[1024]; int main() { u32 i;
s32 Status; u32 Buffer_size=1024; u8 SD_ERROR=0; EMMC_Config= XSdPs_LookupConfig(XPAR_PS7_SD_1_DEVICE_ID); Status = XSdPs_CfgInitialize(&ps7_EMMC, EMMC_Config, EMMC_Config->BaseAddress); if (Status != XST_SUCCESS) { print("EMMC Config failed !\n\r"); return XST_FAILURE; } Status=XSdPs_MmcCardInitialize(&ps7_EMMC); if (Status != XST_SUCCESS) { print("EMMC Config failed !\n\r"); return XST_FAILURE; } Status=XSdPs_Change_ClkFreq(&ps7_EMMC,50000000); Status=XSdPs_Select_Card(&ps7_EMMC); Status=XSdPs_SetBlkSize(&ps7_EMMC,XSDPS_BLK_SIZE_512_MASK); Status=XSdPs_Get_Mmc_ExtCsd(&ps7_EMMC,Emmc_ExtCsd); for(i=0;i<Buffer_size;i++) { WR_Buf[i]=i; } Status = XSdPs_WritePolled(&ps7_EMMC, 0x00, 2, WR_Buf); Status = XSdPs_ReadPolled(&ps7_EMMC, 0x00, 2, RD_Buf); //-----------------------check data----------------------------------------------- for(i=0; i<Buffer_size;i++) { if(WR_Buf[i]!=RD_Buf[i]) { SD_ERROR=1; break; } } if(SD_ERROR) xil_printf("EMMC Data checked Error\r\n"); else xil_printf("EMMC Data checked Successfully\r\n"); return 0; }
2，SD卡裸机读写测试
实现了创建一个 text.txt 的文件，并且打开，只有往里面写 0~1023~共计 1024 个数据，之后再读这个文件，读出 1024 个数据，最后对比数据内容是否和写入的一致。用户可以可以直接复制以上程序到自己的工程使用。除此之外，要让自己新建的工程可以正常编译，还要设置 BSP 库：菜单栏Xilinx->Board Support Package Setting勾选 xilffs 库，以支持 SD 卡的裸机文件系统支持。
#include <stdio.h> #include "xparameters.h" #include "xsdps.h" #include "xil_printf.h" #include "ff.h" static FATFS SD_Dev; // File System instance char *SD_Path = "0:/"; // string pointer to the logical drive number static char FileName[32] = "test.txt"; // name of the log u8 WR_Buf[1024] __attribute__ ((aligned(32))); // Buffer should be word aligned (multiple of 4) u8 RD_Buf[1024] __attribute__ ((aligned(32))); // Buffer should be word aligned (multiple of 4) int SD_init() { FRESULT result; result = f_mount(&SD_Dev,SD_Path, 0); if (result != 0)
{ return XST_FAILURE; } return XST_SUCCESS; } int SD_read(char *FileName,u8 *DestinationAddress,u32 ByteLength) { FIL file; FRESULT result; UINT BytesRd; result = f_open(&file,FileName,FA_READ); if(result)
{ return XST_FAILURE; } result = f_lseek(&file, 0); if(result) { return XST_FAILURE; } result = f_read(&file, (void*)DestinationAddress,ByteLength,&BytesRd); if(result) { return XST_FAILURE; } result = f_close(&file); if(result) { return XST_FAILURE; } return XST_SUCCESS; } int SD_write(char *FileName,u8 *SourceAddress,u32 ByteLength) { FIL file; FRESULT result; UINT BytesWr; result = f_open(&file,FileName,FA_CREATE_ALWAYS | FA_WRITE); if(result) { return XST_FAILURE; } result = f_lseek(&file, 0); if(result) { return XST_FAILURE; } result = f_write(&file,(void*) SourceAddress,ByteLength,&BytesWr); if(result) { return XST_FAILURE; }
result = f_close(&file); if(result)
{ return XST_FAILURE; } return XST_SUCCESS; } int main() { int i; FRESULT result; u8 SD_ERROR=0; u32 Buffer_size=1024; SD_init(); for(i=0;i<Buffer_size;i++) { WR_Buf[i]=i; } //-----------------------write test data to file----------------------------------- result=SD_write(FileName, WR_Buf, Buffer_size); if (result!=0) { return XST_FAILURE; } xil_printf("SD CARD written Successfully\r\n"); //-----------------------read test data ------------------------------------------ result=SD_read(FileName, RD_Buf, Buffer_size); if (result!=0) { return XST_FAILURE; } xil_printf("SD CARD Data read Successfully\r\n"); //-----------------------check data----------------------------------------------- for(i=0; i<Buffer_size;i++) { if(WR_Buf[i]!=RD_Buf[i]) {
SD_ERROR=1; break; } } if(SD_ERROR) xil_printf("SD CARD Data checked Error\r\n"); else xil_printf("SD CARD Data checked Successfully\r\n"); return 0; }
3，FLASH读写测试
#include <unistd.h> #include <stdlib.h> #include <stdio.h> #include <fcntl.h> #include <time.h> #include <sys/ioctl.h> #include <sys/mount.h> #include <linux/compiler.h> #include <mtd/mtd-user.h>
struct BSL { char booslink[10]; //a fixed string idefined as booslink //char serialNumber[24]; //++++add a Serial Number //char PCBA_serialNumber[24]; //char reserved_0[24]; };
int non_region_erase(int Fd, int start, int count, int unlock) { mtd_info_t meminfo;
if (ioctl(Fd,MEMGETINFO,&meminfo) == 0) { erase_info_t erase;
erase.start = start;
erase.length = meminfo.erasesize;
for (; count > 0; count--) { printf("\rPerforming Flash Erase of length %u at offset 0x%x", erase.length, erase.start); fflush(stdout);
if(unlock != 0) { //Unlock the sector first. printf("\rPerforming Flash unlock at offset 0x%x",erase.start); if(ioctl(Fd, MEMUNLOCK, &erase) != 0) { perror("\nMTD Unlock failure"); close(Fd); return 8; } }
if (ioctl(Fd,MEMERASE,&erase) != 0) { perror("\nMTD Erase failure"); close(Fd); return 8; } erase.start += meminfo.erasesize; } printf(" done\n"); } return 0; }
int main(int argc, char *argv[]) { int fd; char *cmd; struct mtd_info_user info; int regcount; int ret; int res;
if(3>argc) { printf("You must specify a device!\n"); return 16; } cmd=argv[1];
// Open the device if ((fd = open(argv[2],O_RDWR)) < 0) { fprintf(stderr,"File open error\n"); return 8; } else { ioctl(fd,MEMGETINFO,&info); //printf("info.size=%d\n info.erasesize=%d\n info.writesize=%d\n info.oobsize=%d\n",info.size,info.erasesize,info.writesize,info.oobsize); } if (ioctl(fd,MEMGETREGIONCOUNT,®count) == 0) { //printf("regcount=%d\n",regcount); }
/*erase the device*/ if (strcmp(cmd, "erase") == 0) { if(regcount == 0) { res = non_region_erase(fd,0,(info.size/info.erasesize),0); } printf("erase!\n"); }
/*write file to this device*/ struct BSL *bsl_write =(struct BSL*)malloc(sizeof(struct BSL)); if (strcmp(cmd, "write") == 0) { printf("write ok!\n"); strcpy(bsl_write->booslink,argv[3]); ret = write(fd, bsl_write, sizeof(struct BSL) );
return 0; }
/*read file from this device*/ struct BSL *bsl_read =(struct BSL*)malloc(sizeof(struct BSL)); if (strcmp(cmd, "read") == 0) { read(fd, bsl_read, sizeof(struct BSL)); printf("%s\n", bsl_read); printf("read ok!\n"); } return 1; }
