应用层读写nandflash示例-白红宇

应用层读写nandflash示例

阅读量：384 次

发布时间：2019-03-05

本文共 1024 字，大约阅读时间需要 3 分钟。

转载自：https://blog.csdn.net/caoshunxin01/article/details/79355410

为了不影响其他文件，最好再多分出一个分区，专门用于flash操作

include sys/ioctl.h

include stdio.h

include mtd/mtd-user.h

include sys/types.h

include sys/stat.h

include fcntl.h

include unistd.h

include string.h

include stdlib.h

#define N 32

#define OFS (0)

#define block_size (128*1024)

#define page_size (2*1024)

int main(int argc, const char *argv[])

{

int fd;

int i, j;

unsigned char oob_data[1024*2] =

{

0x53, 0x50, 0x4c, 0x20, 0, 0xff, 0, 0xff,

0x53, 0x50, 0x4c, 0x20, 0, 0xff, 0, 0xff,

0x53, 0x50, 0x4c, 0x20, 0, 0xff, 0, 0xff,

0x53, 0x50, 0x4c, 0x20, 0, 0xff, 0, 0xff

};

unsigned char oobbuf[N];

struct mtd_oob_buf oob = {0, N, oobbuf};

struct mtd_oob_buf my_oob = {0, N, oob_data};

fd = open("/dev/mtd3", O_RDWR);

if(fd < 0)

{

perror("fail to open\n");

exit(-1);

}

pwrite(fd, oob_data, 1024*2, 1024*4);//写时必须页对齐，一次写一页（2k）的整数位

memset(oob_data,0,32);

pread(fd, oob_data, 32, 1024*4);

for(i=0;i<32;i++)

{

if(i%8==0)

printf("\n");

printf("%2x ",oob_data[i]);

}

printf("\n");

return 0;

}

你可能感兴趣的文章

mysql /*! 50100 ... */ 条件编译

mudbox卸载/完美解决安装失败/如何彻底卸载清除干净mudbox各种残留注册表和文件的方法...

mysql 1264_关于mysql 出现 1264 Out of range value for column 错误的解决办法

mysql 1593_Linux高可用(HA)之MySQL主从复制中出现1593错误码的低级错误

mysql 5.6 修改端口_mysql5.6.24怎么修改端口号

MySQL 8.0 恢复孤立文件每表ibd文件

MySQL 8.0开始Group by不再排序

mysql ansi nulls_SET ANSI_NULLS ON SET QUOTED_IDENTIFIER ON 什么意思

multi swiper bug solution

MySQL Binlog 日志监听与 Spring 集成实战

MySQL binlog三种模式

multi-angle cosine and sines

Mysql Can't connect to MySQL server

mysql case when 乱码_Mysql CASE WHEN 用法

mysql client library_MySQL数据库之zabbix3.x安装出现“configure: error: Not found mysqlclient library”的解决办法...

MySQL Cluster 7.0.36 发布

Multimodal Unsupervised Image-to-Image Translation多通道无监督图像翻译

MySQL Cluster与MGR集群实战

multipart/form-data与application/octet-stream的区别、application/x-www-form-urlencoded