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tools: iio: iio_generic_buffer: add -A to force-enable all channels 

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>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This commit is contained in:
Eva Rachel Retuya 2016-10-14 18:18:39 +08:00 committed by Jonathan Cameron
parent b440f1d90e
commit 4e2cf0e21f
1 changed files with 12 additions and 5 deletions
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17
tools/iio/iio_generic_buffer.c
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@ -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) {