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examples: Cleaned up C examples.

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This commit cleans up multiple items with the UPM C example source.

    * Switch from usleep and sleep to upm_delay* methods
    * Include a mraa_init and check return value prior to using sensor
    * All example mains now return
    * Added include for mraa.h and upm_utilites.h to all examples
    * Reformatted/removed tabs
    * Updated author line for the examples I wrote

Signed-off-by: Noel Eck <noel.eck@intel.com>
This commit is contained in:
Noel Eck
2016-09-19 15:45:22 -07:00
parent 2ccdc3e673
commit 324af8fc92
35 changed files with 775 additions and 482 deletions
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76
examples/c/mma7361.c
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@ -26,6 +26,8 @@
#include <signal.h>
#include "mma7361.h"
#include "upm_utilities.h"
#include "mraa.h"
bool shouldRun = true;
@ -37,49 +39,55 @@ void sig_handler(int signo)
int main()
{
signal(SIGINT, sig_handler);
//! [Interesting]
// Instantiate a MMA7361 sensor on analog pins A0 (X), A1 (Y) A2
// (Z), selftest pin on D2, sleep pin on D3 nd an analog reference
// value of 5.0. The freefall pin and the range pin are unused
// (-1).
mma7361_context sensor = mma7361_init(0, 1, 2, 2, 3, -1, -1, 5.0);
if (!sensor)
if (mraa_init() != MRAA_SUCCESS)
{
printf("mma7361_init() failed.\n");
return(1);
perror("Failed to initialize mraa\n");
return -1;
}
// 1.5g (true = 6g)
mma7361_set_range(sensor, false);
signal(SIGINT, sig_handler);
// Every 10th of a second, update and print values
//! [Interesting]
while (shouldRun)
// Instantiate a MMA7361 sensor on analog pins A0 (X), A1 (Y) A2
// (Z), selftest pin on D2, sleep pin on D3 nd an analog reference
// value of 5.0. The freefall pin and the range pin are unused
// (-1).
mma7361_context sensor = mma7361_init(0, 1, 2, 2, 3, -1, -1, 5.0);
if (!sensor)
{
mma7361_update(sensor);
float x, y, z;
mma7361_get_acceleration(sensor, &x, &y, &z);
printf("Acceleration x = %f y = %f z = %f\n",
x, y, z);
mma7361_get_volts(sensor, &x, &y, &z);
printf("Volts x = %f y = %f z = %f\n\n",
x, y, z);
usleep(100000);
printf("mma7361_init() failed.\n");
return(1);
}
//! [Interesting]
// 1.5g (true = 6g)
mma7361_set_range(sensor, false);
printf("Exiting...\n");
// Every 10th of a second, update and print values
mma7361_close(sensor);
while (shouldRun)
{
mma7361_update(sensor);
return 0;
float x, y, z;
mma7361_get_acceleration(sensor, &x, &y, &z);
printf("Acceleration x = %f y = %f z = %f\n",
x, y, z);
mma7361_get_volts(sensor, &x, &y, &z);
printf("Volts x = %f y = %f z = %f\n\n",
x, y, z);
upm_delay_ms(500);
}
//! [Interesting]
printf("Exiting...\n");
mma7361_close(sensor);
return 0;
}