Skip to content

F
FMC TDC 1ns 5cha - Software
Commit f2a1998d authored by Miguel Gómez Sexto's avatar Miguel Gómez Sexto
Browse files
Options

tdc: added helper functions to read/write sysfs files to the library. 

Signed-off-by: Miguel Gómez Sexto's avatarMiguel Gómez <magomez@igalia.com>
parent 8b486d46
Hide whitespace changes
Inline Side-by-side
Showing with 45 additions and 0 deletions
lib/libtdc.c
View file @ f2a1998d
......@@ -5,6 +5,7 @@
#include <string.h>
#include <stdlib.h>
#include <errno.h>
#include <fcntl.h>
#include "libtdc.h"
#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
......@@ -12,6 +13,50 @@
static int tdc_nboards;
static struct tdc_board *tdc_boards;
static inline int fdelay_sysfs_get(struct tdc_board *b, char *name,
uint32_t *resp)
{
char path[128];
FILE *f;
sprintf(path, "%s/%s", b->sysbase, name);
f = fopen(path, "r");
if (!f)
return -1;
errno = 0;
if (fscanf(f, "%i", resp) != 1) {
fclose(f);
if (!errno)
errno = EINVAL;
return -1;
}
fclose(f);
return 0;
}
static inline int fdelay_sysfs_set(struct tdc_board *b, char *name,
uint32_t *value)
{
char path[128];
char s[16];
int fd, ret, len;
sprintf(path, "%s/%s", b->sysbase, name);
len = sprintf(s, "%i\n", *value);
fd = open(path, O_WRONLY);
if (fd < 0)
return -1;
ret = write(fd, s, len);
close(fd);
if (ret < 0)
return -1;
if (ret == len)
return 0;
errno = EINVAL;
return -1;
}
int tdc_init(void)
{
glob_t glob_dev, glob_sys;
......
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment