How to print block of data

How to print block of data

By Crifan Li

Date: 05.19 2008

/* print the buf data */

printk(KERN_WARNING "n%s : The buf=0x%p ,data is:n",__FUNCTION__, buf);

for(j = 0;j < 512; j+=4) /* total print one page=2048 bytes */

{

printk(KERN_WARNING "%08x ",*((u32 *)(buf+j)) );

/* after the first data , should not do n, then the whole block of data should do n every 32bytes */

if(j!=0 && 0 == (j+4)%32)

printk(KERN_WARNING "n");

}

printk(KERN_WARNING "n");

so above can change to this new version :

#define BYTES_PER_DATA 4

#define DATAS_PER_LINE 8

#define BYTES_PER_LINE ((BYTES_PER_DATA)*(DATAS_PER_LINE))

#define TOTAL_BYTES 2048

#define DATAS ((TOTAL_BYTES)/( BYTES_PER_DATA))

/* print the buf data */

printk(KERN_WARNING "nFUNC:%s LINE:%: The buf=0x%p ,data is:n",__FUNCTION__, __LINE__. buf);

for(j = 0;j < DATAS; j+= BYTES_PER_DATA) /* total print one page=2048 bytes */

{

printk(KERN_WARNING "%08x ",*((u32 *)(buf+j)) );

/* after the first data , should not do n */

/* if the end of every line , then do n */

if(j!=0 && 0 == (j+ BYTES_PER_DATA)% BYTES_PER_LINE)

printk(KERN_WARNING "n");

}

printk(KERN_WARNING "n");