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adafruitss: 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 14:50:52 -06:00 committed by Mihai Tudor Panu
parent a1db1b423b
commit 0566b4f995
1 changed files with 22 additions and 6 deletions
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28
src/adafruitss/adafruitss.cxx
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@ -22,6 +22,9 @@
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include <string>
#include <stdexcept>
#include "adafruitss.h"
#include <unistd.h>
#include <math.h>
@ -30,16 +33,29 @@ using namespace upm;
adafruitss::adafruitss(int bus,int i2c_address)
{
mraa_init();
m_i2c = mraa_i2c_init(bus);
if ( !(m_i2c = mraa_i2c_init(bus)) )
{
throw std::invalid_argument(std::string(__FUNCTION__) +
": mraa_i2c_init() failed");
return;
}
pca9685_addr = i2c_address;
mraa_i2c_address(m_i2c, pca9685_addr);
if (mraa_i2c_address(m_i2c, pca9685_addr) != MRAA_SUCCESS)
{
throw std::invalid_argument(std::string(__FUNCTION__) +
": mraa_i2c_address() failed");
return;
}
m_rx_tx_buf[0]=PCA9685_MODE1;
m_rx_tx_buf[1]=0;
mraa_i2c_write(m_i2c,m_rx_tx_buf,2);
if (mraa_i2c_write(m_i2c,m_rx_tx_buf,2) != MRAA_SUCCESS)
{
throw std::invalid_argument(std::string(__FUNCTION__) +
": mraa_i2c_write() failed");
return;
}
adafruitss::setPWMFreq(60);