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tm1637: 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 12:31:24 -06:00 committed by Mihai Tudor Panu
parent 26317cbd2a
commit 8765416016
1 changed files with 8 additions and 3 deletions
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11
src/tm1637/tm1637.cxx
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@ -22,6 +22,8 @@
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/ */
#include <string>
#include <stdexcept>
#include "tm1637.h" #include "tm1637.h"
#include <stdarg.h> #include <stdarg.h>
@ -41,12 +43,14 @@ using namespace upm;
upm::TM1637::TM1637(int clk_pin, int dio_pin, int bright, M_FAST_GPIO mmio) { upm::TM1637::TM1637(int clk_pin, int dio_pin, int bright, M_FAST_GPIO mmio) {
if((m_clk = mraa_gpio_init(clk_pin)) == NULL){ if((m_clk = mraa_gpio_init(clk_pin)) == NULL){
cerr << "TM1637: failed to initialize CLK pin." << endl; throw std::invalid_argument(std::string(__FUNCTION__) +
": mraa_gpio_init(clk) failed, invalid pin?");
return; return;
} }
if((m_dio = mraa_gpio_init(dio_pin)) == NULL){ if((m_dio = mraa_gpio_init(dio_pin)) == NULL){
cerr << "TM1637: failed to initialize DIO pin." << endl; throw std::invalid_argument(std::string(__FUNCTION__) +
": mraa_gpio_init(dio) failed, invalid pin?");
return; return;
} }
@ -60,7 +64,8 @@ upm::TM1637::TM1637(int clk_pin, int dio_pin, int bright, M_FAST_GPIO mmio) {
if(mmio){ if(mmio){
if(mraa_gpio_use_mmaped(m_clk, 1) != MRAA_SUCCESS || if(mraa_gpio_use_mmaped(m_clk, 1) != MRAA_SUCCESS ||
mraa_gpio_use_mmaped(m_dio, 1) != MRAA_SUCCESS){ mraa_gpio_use_mmaped(m_dio, 1) != MRAA_SUCCESS){
cerr << "TM1637: failed to set memory mapped GPIO" << endl; throw std::runtime_error(std::string(__FUNCTION__) +
": mraa_gpio_use_mmaped() failed");
return; return;
} }
} }