From: Alin Gabriel Arhip <alin.g.arhip@xxxxxxxxx>
This patch adds usage instructions and -h parameter to view available
command line parameters.
Signed-off-by: Alin Gabriel Arhip <alin.g.arhip@xxxxxxxxx>
---
tools/iio/generic_buffer.c | 22 ++++++++++++++++++++--
1 file changed, 20 insertions(+), 2 deletions(-)
diff --git a/tools/iio/generic_buffer.c b/tools/iio/generic_buffer.c
index 8f8f058..8dd77ac 100644
--- a/tools/iio/generic_buffer.c
+++ b/tools/iio/generic_buffer.c
@@ -166,7 +166,17 @@ int main(int argc, char **argv)
struct iio_channel_info *channels;
- while ((c = getopt(argc, argv, "l:w:c:et:n:g")) != -1) {
+ if (argc <= 1) {
+ printf("Usage: %s -n <device_name> -t <trigger_name>\n"
+ "\tIf trigger name is not specified the program\n"
+ "\tassumes you want a dataready trigger associated\n"
+ "\twith the device and goes looking for it.\n"
+ "\tUse -h to see available command line parameters.\n",
+ argv[0]);
+ return -1;
+ }
+
+ while ((c = getopt(argc, argv, "l:w:c:et:n:gh")) != -1) {
switch (c) {
case 'n':
device_name = optarg;
@@ -190,7 +200,15 @@ int main(int argc, char **argv)
case 'g':
notrigger = 1;
break;
- case '?':
+ case '?': case 'h':
+ printf("Usage: %s -n <device_name> to set device name\n"
+ "\t-t <trigger_name> to set trigger name\n"
+ "\t-e to set noevents to 1\n"
+ "\t-c <num_loops> to set number of loops\n"
+ "\t-w <timedelay> to set time delay\n"
+ "\t-l <buf_len> to set buffer length\n"
+ "\t-g to set notrigger to 1\n"
+ "\t-h to see this help\n", argv[0]);
return -1;
}
}
--
1.9.1
--
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