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nunchuck: 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 11:35:15 -06:00 committed by Mihai Tudor Panu
parent 8e54381216
commit c7aa1b1f8a
1 changed files with 13 additions and 7 deletions
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20
src/nunchuck/nunchuck.cxx
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@ -24,6 +24,7 @@
#include <iostream> #include <iostream>
#include <string> #include <string>
#include <stdexcept>
#include <unistd.h> #include <unistd.h>
#include "nunchuck.h" #include "nunchuck.h"
@ -43,14 +44,19 @@ NUNCHUCK::NUNCHUCK(int bus, uint8_t addr)
buttonZ = false; buttonZ = false;
// setup our i2c link // setup our i2c link
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;
}
mraa_result_t rv; mraa_result_t rv;
if ( (rv = mraa_i2c_address(m_i2c, addr)) != MRAA_SUCCESS ) if ( (rv = mraa_i2c_address(m_i2c, addr)) != MRAA_SUCCESS )
{ {
cerr << __FUNCTION__ << ": mraa_i2c_address() failed." << endl; throw std::invalid_argument(std::string(__FUNCTION__) +
mraa_result_print(rv); ": mraa_i2c_address() failed");
} }
} }
@ -65,8 +71,8 @@ bool NUNCHUCK::writeByte(uint8_t reg, uint8_t byte)
if ( (rv = mraa_i2c_write_byte_data(m_i2c, byte, reg)) != MRAA_SUCCESS ) if ( (rv = mraa_i2c_write_byte_data(m_i2c, byte, reg)) != MRAA_SUCCESS )
{ {
cerr << __FUNCTION__ << ": mraa_i2c_write_byte_data() failed." << endl; throw std::runtime_error(std::string(__FUNCTION__) +
mraa_result_print(rv); ": mraa_i2c_write_byte_data() failed");
return false; return false;
} }
@ -108,8 +114,8 @@ void NUNCHUCK::update()
if (rv != bufsize) if (rv != bufsize)
{ {
cerr << __FUNCTION__ << "read failed, expected " << bufsize throw std::runtime_error(std::string(__FUNCTION__) +
<< "bytes, got " << rv << endl; ": readBytes() failed");
return; return;
} }