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* [PATCH] tools: iio: iio_generic_buffer: add -A to force-enable all channels
@ 2016-10-14 10:18 Eva Rachel Retuya
  2016-10-15 14:27 ` Jonathan Cameron
  2016-10-17 21:15 ` Peter Meerwald-Stadler
  0 siblings, 2 replies; 5+ messages in thread
From: Eva Rachel Retuya @ 2016-10-14 10:18 UTC (permalink / raw)
  To: linux-iio, outreachy-kernel
  Cc: jic23, knaack.h, lars, pmeerw, Eva Rachel Retuya

If attribute/s is/are already enabled (by default or via scripts or
manual interaction), issuing -a will fail to enable the channels thereby
one has to manually disable the said attribute/s before proceeding with
auto-enabling.

Add a command-line option -A to force-activate all channels regardless
of their current state.

Suggested-by: Alison Schofield <amsfield22@gmail.com>
Signed-off-by: Eva Rachel Retuya <eraretuya@gmail.com>
---
 tools/iio/iio_generic_buffer.c | 17 ++++++++++++-----
 1 file changed, 12 insertions(+), 5 deletions(-)

diff --git a/tools/iio/iio_generic_buffer.c b/tools/iio/iio_generic_buffer.c
index f39c0e9..84c9888 100644
--- a/tools/iio/iio_generic_buffer.c
+++ b/tools/iio/iio_generic_buffer.c
@@ -247,6 +247,7 @@ void print_usage(void)
 	fprintf(stderr, "Usage: generic_buffer [options]...\n"
 		"Capture, convert and output data from IIO device buffer\n"
 		"  -a         Auto-activate all available channels\n"
+		"  -A         Force-activate ALL channels\n"
 		"  -c <n>     Do n conversions\n"
 		"  -e         Disable wait for event (new data)\n"
 		"  -g         Use trigger-less mode\n"
@@ -347,16 +348,22 @@ int main(int argc, char **argv)
 	int noevents = 0;
 	int notrigger = 0;
 	char *dummy;
+	int force = 0;
 
 	struct iio_channel_info *channels = NULL;
 
 	register_cleanup();
 
-	while ((c = getopt_long(argc, argv, "ac:egl:n:N:t:T:w:", longopts, NULL)) != -1) {
+	while ((c = getopt_long(argc, argv, "aAc:egl:n:N:t:T:w:", longopts,
+		NULL)) != -1) {
 		switch (c) {
 		case 'a':
 			autochannels = AUTOCHANNELS_ENABLED;
 			break;
+		case 'A':
+			autochannels = AUTOCHANNELS_ENABLED;
+			force = 1;
+			break;
 		case 'c':
 			errno = 0;
 			num_loops = strtoul(optarg, &dummy, 10);
@@ -519,15 +526,15 @@ int main(int argc, char **argv)
 			"diag %s\n", dev_dir_name);
 		goto error;
 	}
-	if (num_channels && autochannels == AUTOCHANNELS_ENABLED) {
+	if ((num_channels && autochannels == AUTOCHANNELS_ENABLED) && !force) {
 		fprintf(stderr, "Auto-channels selected but some channels "
 			"are already activated in sysfs\n");
 		fprintf(stderr, "Proceeding without activating any channels\n");
 	}
 
-	if (!num_channels && autochannels == AUTOCHANNELS_ENABLED) {
-		fprintf(stderr,
-			"No channels are enabled, enabling all channels\n");
+	if ((!num_channels && autochannels == AUTOCHANNELS_ENABLED) ||
+	    ((autochannels == AUTOCHANNELS_ENABLED) && force)) {
+		fprintf(stderr, "Enabling all channels\n");
 
 		ret = enable_disable_all_channels(dev_dir_name, 1);
 		if (ret) {
-- 
2.7.4



^ permalink raw reply related	[flat|nested] 5+ messages in thread

end of thread, other threads:[~2016-10-19 17:10 UTC | newest]

Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2016-10-14 10:18 [PATCH] tools: iio: iio_generic_buffer: add -A to force-enable all channels Eva Rachel Retuya
2016-10-15 14:27 ` Jonathan Cameron
2016-10-16  2:13   ` Eva Rachel Retuya
2016-10-17 21:15 ` Peter Meerwald-Stadler
2016-10-19 17:09   ` Eva Rachel Retuya

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