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hcsr04: throw exception(s) on fatal errors

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Signed-off-by: Jon Trulson <jtrulson@ics.com>
Signed-off-by: Mihai Tudor Panu <mihai.tudor.panu@intel.com>
This commit is contained in:
Jon Trulson 2015-09-10 11:44:03 -06:00 committed by Mihai Tudor Panu
parent 1f1c303937
commit 8d38bd0bcc
1 changed files with 8 additions and 4 deletions
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12
src/hcsr04/hcsr04.cxx
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@ -24,6 +24,8 @@
*/
#include <iostream>
#include <string>
#include <stdexcept>
#include <unistd.h>
#include <stdlib.h>
#include <functional>
@ -47,8 +49,9 @@ HCSR04::HCSR04 (uint8_t triggerPin, uint8_t echoPin, void (*fptr)(void *)) {
m_triggerPinCtx = mraa_gpio_init (triggerPin);
if (m_triggerPinCtx == NULL) {
fprintf (stderr, "Are you sure that pin%d you requested is valid on your platform?", triggerPin);
exit (1);
throw std::invalid_argument(std::string(__FUNCTION__) +
": mraa_pwm_init() failed, invalid pin?");
return;
}
mraa_gpio_dir(m_triggerPinCtx, MRAA_GPIO_OUT);
@ -56,8 +59,9 @@ HCSR04::HCSR04 (uint8_t triggerPin, uint8_t echoPin, void (*fptr)(void *)) {
m_echoPinCtx = mraa_gpio_init(echoPin);
if (m_echoPinCtx == NULL) {
fprintf (stderr, "Are you sure that pin%d you requested is valid on your platform?", echoPin);
exit (1);
throw std::invalid_argument(std::string(__FUNCTION__) +
": mraa_gpio_init() failed, invalid pin?");
return;
}
mraa_gpio_dir(m_echoPinCtx, MRAA_GPIO_IN);