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stepmotor: 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 2015-09-11 12:05:54 -06:00 committed by Mihai Tudor Panu
parent ca04996524
commit 3585761ecf
1 changed files with 16 additions and 0 deletions
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16
src/stepmotor/stepmotor.cxx
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@ -23,6 +23,8 @@
*/ */
#include <iostream> #include <iostream>
#include <string>
#include <stdexcept>
#include <unistd.h> #include <unistd.h>
#include <stdlib.h> #include <stdlib.h>
@ -40,6 +42,20 @@ StepMotor::StepMotor (int dirPin, int stePin)
m_stePin = stePin; m_stePin = stePin;
m_dirPin = dirPin; m_dirPin = dirPin;
m_pwmStepContext = mraa_pwm_init (m_stePin);
if (m_pwmStepContext == NULL) {
throw std::invalid_argument(std::string(__FUNCTION__) +
": mraa_pwm_init() failed, invalid pin?");
return;
}
m_dirPinCtx = mraa_gpio_init (m_dirPin);
if (m_dirPinCtx == NULL) {
throw std::invalid_argument(std::string(__FUNCTION__) +
": mraa_gpio_init() failed, invalid pin?");
return;
}
error = m_dirPinCtx.dir (mraa::DIR_OUT); error = m_dirPinCtx.dir (mraa::DIR_OUT);
if (error != mraa::SUCCESS) { if (error != mraa::SUCCESS) {
mraa::printError (error); mraa::printError (error);