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grovemd: 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 2015-09-10 11:09:54 -06:00 committed by Mihai Tudor Panu
parent b20a5f1d68
commit b56095a3ff
1 changed files with 14 additions and 10 deletions
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24
src/grovemd/grovemd.cxx
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@ -25,6 +25,7 @@
#include <unistd.h> #include <unistd.h>
#include <iostream> #include <iostream>
#include <string> #include <string>
#include <stdexcept>
#include "grovemd.h" #include "grovemd.h"
@ -39,7 +40,8 @@ GroveMD::GroveMD(int bus, uint8_t address)
// setup our i2c link // setup our i2c link
if ( !(m_i2c = mraa_i2c_init(bus)) ) if ( !(m_i2c = mraa_i2c_init(bus)) )
{ {
cerr << __FUNCTION__ << ": mraa_i2c_init() failed" << endl; throw std::invalid_argument(std::string(__FUNCTION__) +
": mraa_i2c_init() failed");
return; return;
} }
@ -47,14 +49,15 @@ GroveMD::GroveMD(int bus, uint8_t address)
mraa_result_t rv; mraa_result_t rv;
if ( (rv = mraa_i2c_frequency(m_i2c, MRAA_I2C_STD)) != MRAA_SUCCESS ) if ( (rv = mraa_i2c_frequency(m_i2c, MRAA_I2C_STD)) != MRAA_SUCCESS )
{ {
cerr << "GroveMD: Could not set i2c frequency (MRAA_I2C_STD). " << endl; throw std::invalid_argument(std::string(__FUNCTION__) +
mraa_result_print(rv); ": mraa_i2c_frequency(MRAA_I2C_STD) failed");
return; return;
} }
if (mraa_i2c_address(m_i2c, m_addr)) if (mraa_i2c_address(m_i2c, m_addr))
{ {
cerr << "GroveMD: Could not initialize i2c bus. " << endl; throw std::runtime_error(std::string(__FUNCTION__) +
": mraa_i2c_address() failed");
return; return;
} }
} }
@ -76,8 +79,8 @@ bool GroveMD::writePacket(REG_T reg, uint8_t data1, uint8_t data2)
mraa_result_t rv; mraa_result_t rv;
if ( (rv = mraa_i2c_address(m_i2c, m_addr)) != MRAA_SUCCESS ) if ( (rv = mraa_i2c_address(m_i2c, m_addr)) != MRAA_SUCCESS )
{ {
cerr << __FUNCTION__ << ": mraa_i2c_address() failed. " << endl; throw std::runtime_error(std::string(__FUNCTION__) +
mraa_result_print(rv); ": mraa_i2c_address() failed");
return false; return false;
} }
@ -90,8 +93,8 @@ bool GroveMD::writePacket(REG_T reg, uint8_t data1, uint8_t data2)
if ( (rv = mraa_i2c_write(m_i2c, buf, 3)) != MRAA_SUCCESS ) if ( (rv = mraa_i2c_write(m_i2c, buf, 3)) != MRAA_SUCCESS )
{ {
cerr << __FUNCTION__ << ": mraa_i2c_write() failed:" << endl; throw std::runtime_error(std::string(__FUNCTION__) +
mraa_result_print(rv); ": mraa_i2c_write() failed");
return false; return false;
} }
@ -129,8 +132,9 @@ bool GroveMD::setStepperSteps(uint8_t steps)
if (steps == 0) if (steps == 0)
{ {
// invalid // invalid
cerr << __FUNCTION__ << ": invalid number of steps. " throw std::out_of_range(std::string(__FUNCTION__) +
<< "Valid values are between 1 and 255." << endl; ": invalid number of steps. " +
"Valid values are between 1 and 255.");
return false; return false;
} }