staging:iio: update example to handle case with no ring events
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>
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1 changed files with 29 additions and 16 deletions
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@ -26,6 +26,7 @@
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#include <sys/stat.h>
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#include <sys/dir.h>
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#include <linux/types.h>
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#include <string.h>
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#include "iio_utils.h"
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const int buf_len = 128;
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@ -134,10 +135,11 @@ int main(int argc, char **argv)
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int dev_num, trig_num;
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char *buffer_access, *buffer_event;
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int scan_size;
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int noevents = 0;
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struct iio_channel_info *infoarray;
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while ((c = getopt(argc, argv, "t:n:")) != -1) {
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while ((c = getopt(argc, argv, "et:n:")) != -1) {
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switch (c) {
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case 'n':
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device_name = optarg;
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@ -146,6 +148,9 @@ int main(int argc, char **argv)
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trigger_name = optarg;
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datardytrigger = 0;
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break;
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case 'e':
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noevents = 1;
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break;
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case '?':
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return -1;
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}
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@ -260,22 +265,30 @@ int main(int argc, char **argv)
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/* Wait for events 10 times */
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for (j = 0; j < num_loops; j++) {
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read_size = fread(&dat, 1, sizeof(struct iio_event_data),
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fp_ev);
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switch (dat.id) {
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case IIO_EVENT_CODE_RING_100_FULL:
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toread = buf_len;
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break;
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case IIO_EVENT_CODE_RING_75_FULL:
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toread = buf_len*3/4;
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break;
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case IIO_EVENT_CODE_RING_50_FULL:
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toread = buf_len/2;
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break;
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default:
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printf("Unexpecteded event code\n");
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continue;
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if (!noevents) {
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read_size = fread(&dat,
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1,
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sizeof(struct iio_event_data),
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fp_ev);
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switch (dat.id) {
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case IIO_EVENT_CODE_RING_100_FULL:
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toread = buf_len;
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break;
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case IIO_EVENT_CODE_RING_75_FULL:
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toread = buf_len*3/4;
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break;
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case IIO_EVENT_CODE_RING_50_FULL:
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toread = buf_len/2;
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break;
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default:
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printf("Unexpecteded event code\n");
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continue;
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}
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} else {
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usleep(1000);
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toread = 64;
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}
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read_size = read(fp,
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data,
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toread*scan_size);
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