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Chapter 3 User Flash 49
Write Example Program
CODE EXAMPLE 3-4 contains the Write Action on the user flash device.
printf("number of blocks = 0x%p", ufif0.info.blk_num);
printf("block size = 0x%p" ufif0.info.blk_size);
}
static int
uflash_uninit() {
if (ufd0)
close(ufd0);
cleanup:
if (buf0)
free(buf0);
}
static int
uflash_read() {
/* read block 0 of user flash */
if (pread(ufd0, buf0, ufif0.info.blk_size, 0) != ufif0.info.blk_size)
perror("uflash0:read");
return(0);
}
main() {
int ret;
module = argv[0];
ret = uflash_init();
if (!ret)
uflash_read();
uflash_uninit();
}
CODE EXAMPLE 3-4 Write Action on User Flash Device
/*
* uflash_write.c
* An example that shows how to write user flash
*/
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <uflash_if.h>
char *uflash0 = "/dev/uflash0";
CODE EXAMPLE 3-3 Read Action on User Flash Device (Continued)