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uln200xa: 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 2015-09-09 11:49:00 -06:00 committed by Mihai Tudor Panu
parent a4db81c15f
commit bea94a70b2
1 changed files with 10 additions and 4 deletions
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14
src/uln200xa/uln200xa.cxx
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@ -23,6 +23,8 @@
*/
#include <iostream>
#include <string>
#include <stdexcept>
#include "uln200xa.h"
@ -38,14 +40,16 @@ ULN200XA::ULN200XA(int stepsPerRev, int i1, int i2, int i3, int i4)
if ( !(m_stepI1 = mraa_gpio_init(i1)) )
{
cerr << __FUNCTION__ << ": mraa_gpio_init(i1) failed" << endl;
throw std::invalid_argument(std::string(__FUNCTION__) +
": mraa_gpio_init(i1) failed, invalid pin?");
return;
}
mraa_gpio_dir(m_stepI1, MRAA_GPIO_OUT);
if ( !(m_stepI2 = mraa_gpio_init(i2)) )
{
cerr << __FUNCTION__ << ": mraa_gpio_init(i2) failed" << endl;
throw std::invalid_argument(std::string(__FUNCTION__) +
": mraa_gpio_init(i2) failed, invalid pin?");
mraa_gpio_close(m_stepI1);
return;
}
@ -53,7 +57,8 @@ ULN200XA::ULN200XA(int stepsPerRev, int i1, int i2, int i3, int i4)
if ( !(m_stepI3 = mraa_gpio_init(i3)) )
{
cerr << __FUNCTION__ << ": mraa_gpio_init(i3) failed" << endl;
throw std::invalid_argument(std::string(__FUNCTION__) +
": mraa_gpio_init(i3) failed, invalid pin?");
mraa_gpio_close(m_stepI1);
mraa_gpio_close(m_stepI2);
return;
@ -62,7 +67,8 @@ ULN200XA::ULN200XA(int stepsPerRev, int i1, int i2, int i3, int i4)
if ( !(m_stepI4 = mraa_gpio_init(i4)) )
{
cerr << __FUNCTION__ << ": mraa_gpio_init(i4) failed" << endl;
throw std::invalid_argument(std::string(__FUNCTION__) +
": mraa_gpio_init(i4) failed, invalid pin?");
mraa_gpio_close(m_stepI1);
mraa_gpio_close(m_stepI2);
mraa_gpio_close(m_stepI3);