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grovecircularled: 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 16:43:42 -06:00 committed by Mihai Tudor Panu
parent 1079baf2fd
commit d7b8fac41b
1 changed files with 19 additions and 0 deletions
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19
src/grovecircularled/grovecircularled.cxx
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@ -26,6 +26,8 @@
*/ */
#include <iostream> #include <iostream>
#include <string>
#include <stdexcept>
#include <unistd.h> #include <unistd.h>
#include <stdlib.h> #include <stdlib.h>
@ -38,6 +40,23 @@ GroveCircularLED::GroveCircularLED (uint8_t di, uint8_t dcki)
m_dataPinCtx(di) { m_dataPinCtx(di) {
mraa::Result error = mraa::SUCCESS; mraa::Result error = mraa::SUCCESS;
// init clock context
m_clkPinCtx = mraa_gpio_init(dcki);
if (m_clkPinCtx == NULL) {
throw std::invalid_argument(std::string(__FUNCTION__) +
": mraa_gpio_init(dcki) failed, invalid pin?");
return;
}
mraa_gpio_use_mmaped(m_clkPinCtx, 1);
// init data context
m_dataPinCtx = mraa_gpio_init(di);
if (m_dataPinCtx == NULL) {
throw std::invalid_argument(std::string(__FUNCTION__) +
": mraa_gpio_init(di) failed, invalid pin?");
return;
}
m_clkPinCtx.useMmap(true); m_clkPinCtx.useMmap(true);
m_dataPinCtx.useMmap(true); m_dataPinCtx.useMmap(true);