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staging:iio: update example to handle case with no ring events

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Signed-off-by: Jonathan Cameron <jic23@cam.ac.uk>
Tested-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Jonathan Cameron 2011-02-11 13:09:12 +00:00 committed by Greg Kroah-Hartman
parent b949793b2c
commit 30268a3da9
1 changed files with 29 additions and 16 deletions
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45
drivers/staging/iio/Documentation/generic_buffer.c
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@ -26,6 +26,7 @@
#include <sys/stat.h>
#include <sys/dir.h>
#include <linux/types.h>
#include <string.h>
#include "iio_utils.h"
const int buf_len = 128;
@ -134,10 +135,11 @@ int main(int argc, char **argv)
int dev_num, trig_num;
char *buffer_access, *buffer_event;
int scan_size;
int noevents = 0;
struct iio_channel_info *infoarray;
while ((c = getopt(argc, argv, "t:n:")) != -1) {
while ((c = getopt(argc, argv, "et:n:")) != -1) {
switch (c) {
case 'n':
device_name = optarg;
@ -146,6 +148,9 @@ int main(int argc, char **argv)
trigger_name = optarg;
datardytrigger = 0;
break;
case 'e':
noevents = 1;
break;
case '?':
return -1;
}
@ -260,22 +265,30 @@ int main(int argc, char **argv)
/* Wait for events 10 times */
for (j = 0; j < num_loops; j++) {
read_size = fread(&dat, 1, sizeof(struct iio_event_data),
fp_ev);
switch (dat.id) {
case IIO_EVENT_CODE_RING_100_FULL:
toread = buf_len;
break;
case IIO_EVENT_CODE_RING_75_FULL:
toread = buf_len*3/4;
break;
case IIO_EVENT_CODE_RING_50_FULL:
toread = buf_len/2;
break;
default:
printf("Unexpecteded event code\n");
continue;
if (!noevents) {
read_size = fread(&dat,
1,
sizeof(struct iio_event_data),
fp_ev);
switch (dat.id) {
case IIO_EVENT_CODE_RING_100_FULL:
toread = buf_len;
break;
case IIO_EVENT_CODE_RING_75_FULL:
toread = buf_len*3/4;
break;
case IIO_EVENT_CODE_RING_50_FULL:
toread = buf_len/2;
break;
default:
printf("Unexpecteded event code\n");
continue;
}
} else {
usleep(1000);
toread = 64;
}
read_size = read(fp,
data,
toread*scan_size);