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Add logic to limit the number of samples

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git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@3996 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo 2011-09-29 16:38:09 +00:00
parent f42fdde5c5
commit 1a682b3c48
3 changed files with 14 additions and 2 deletions
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5
examples/README.txt
View File

@ -779,6 +779,11 @@ examples/touchscreen
CONFIG_EXAMPLES_TOUCHSCREEN_DEVPATH - The path to the touchscreen CONFIG_EXAMPLES_TOUCHSCREEN_DEVPATH - The path to the touchscreen
device. This must be consistent with CONFIG_EXAMPLES_TOUCHSCREEN_MINOR. device. This must be consistent with CONFIG_EXAMPLES_TOUCHSCREEN_MINOR.
Default: "/dev/input0" Default: "/dev/input0"
CONFIG_EXAMPLES_TOUCHSCREEN_NSAMPLES - If CONFIG_EXAMPLES_TOUCHSCREEN_BUILTIN
is defined, then the number of samples is provided on the command line
and this value is ignored. Otherwise, this number of samples is
collected and the program terminates. Default: Samples are collected
indefinitely.
The following additional configurations must be set in the NuttX The following additional configurations must be set in the NuttX
configuration file: configuration file:

5
examples/touchscreen/tc.h
View File

@ -55,6 +55,11 @@
* CONFIG_EXAMPLES_TOUCHSCREEN_DEVPATH - The path to the touchscreen * CONFIG_EXAMPLES_TOUCHSCREEN_DEVPATH - The path to the touchscreen
* device. This must be consistent with CONFIG_EXAMPLES_TOUCHSCREEN_MINOR. * device. This must be consistent with CONFIG_EXAMPLES_TOUCHSCREEN_MINOR.
* Default: "/dev/input0" * Default: "/dev/input0"
* CONFIG_EXAMPLES_TOUCHSCREEN_NSAMPLES - If CONFIG_EXAMPLES_TOUCHSCREEN_BUILTIN
* is defined, then the number of samples is provided on the command line
* and this value is ignored. Otherwise, this number of samples is
* collected and the program terminates. Default: Samples are collected
* indefinitely.
*/ */
#ifndef CONFIG_INPUT #ifndef CONFIG_INPUT

6
examples/touchscreen/tc_main.c
View File

@ -95,7 +95,7 @@ int MAIN_NAME(int argc, char *argv[])
{ {
struct touch_sample_s sample; struct touch_sample_s sample;
ssize_t nbytes; ssize_t nbytes;
#ifdef CONFIG_EXAMPLES_TOUCHSCREEN_BUILTIN #if defined(CONFIG_EXAMPLES_TOUCHSCREEN_BUILTIN) || defined(CONFIG_EXAMPLES_TOUCHSCREEN_NSAMPLES)
long nsamples; long nsamples;
#endif #endif
int fd; int fd;
@ -142,8 +142,10 @@ int MAIN_NAME(int argc, char *argv[])
* touchscreen samples. * touchscreen samples.
*/ */
#ifdef CONFIG_EXAMPLES_TOUCHSCREEN_BUILTIN #if defined(CONFIG_EXAMPLES_TOUCHSCREEN_BUILTIN)
for (; namples > 0; nsamples--) for (; namples > 0; nsamples--)
#elif defined(CONFIG_EXAMPLES_TOUCHSCREEN_NSAMPLES)
for (namples = 0; namples < CONFIG_EXAMPLES_TOUCHSCREEN_NSAMPLES; nsamples++)
#else #else
for (;;) for (;;)
#endif #endif