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mpr121: 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 2015-09-08 16:58:17 -06:00 committed by Mihai Tudor Panu
parent cc6ba3be6d
commit b00e81dfce
1 changed files with 23 additions and 11 deletions
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34
src/mpr121/mpr121.cxx
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@ -24,6 +24,7 @@
#include <iostream>
#include <string>
#include <stdexcept>
#include "mpr121.h"
@ -34,11 +35,14 @@ using namespace std;
MPR121::MPR121(int bus, uint8_t address) : m_i2c(bus)
{
m_addr = address;
mraa::Result ret = m_i2c.address(m_addr);
if (ret != mraa::SUCCESS)
cerr << "MPR121: Could not initialize i2c bus. " << endl;
if (ret != mraa::SUCCESS)
{
throw std::invalid_argument(std::string(__FUNCTION__) +
": mraa_i2c_address() failed");
return;
}
m_buttonStates = 0;
m_overCurrentFault = false;
@ -90,7 +94,8 @@ bool MPR121::configAN3944()
uint8_t eleConf = 0x00;
if ((rv = writeBytes(0x5e, &eleConf, 1)) != mraa::SUCCESS)
{
cerr << __FUNCTION__ << ": " << __LINE__<< ": I2C write failed." << endl;
throw std::runtime_error(std::string(__FUNCTION__) +
": writeBytes(0x5e) failed");
return false;
}
@ -100,7 +105,8 @@ bool MPR121::configAN3944()
uint8_t sectA[] = { 0x01, 0x01, 0x00, 0x00 };
if ((rv = writeBytes(0x2b, sectA, 4)) != mraa::SUCCESS)
{
cerr << __FUNCTION__ << ": " << __LINE__<< ": I2C write failed." << endl;
throw std::runtime_error(std::string(__FUNCTION__) +
": writeBytes(0x2b) failed");
return false;
}
@ -110,7 +116,8 @@ bool MPR121::configAN3944()
uint8_t sectB[] = { 0x01, 0x01, 0xff, 0x02 };
if ((rv = writeBytes(0x2f, sectB, 4)) != mraa::SUCCESS)
{
cerr << __FUNCTION__ << ": " << __LINE__<< ": I2C write failed." << endl;
throw std::runtime_error(std::string(__FUNCTION__) +
": writeBytes(0x2f) failed");
return false;
}
@ -132,7 +139,8 @@ bool MPR121::configAN3944()
0x0f, 0x0a };
if ((rv = writeBytes(0x41, sectC, 24)) != mraa::SUCCESS)
{
cerr << __FUNCTION__ << ": " << __LINE__<< ": I2C write failed." << endl;
throw std::runtime_error(std::string(__FUNCTION__) +
": writeBytes(0x41) failed");
return false;
}
@ -142,7 +150,8 @@ bool MPR121::configAN3944()
uint8_t filterConf = 0x04;
if ((rv = writeBytes(0x5d, &filterConf, 1)) != mraa::SUCCESS)
{
cerr << __FUNCTION__ << ": " << __LINE__<< ": I2C write failed." << endl;
throw std::runtime_error(std::string(__FUNCTION__) +
": writeBytes(0x5d) failed");
return false;
}
@ -152,13 +161,15 @@ bool MPR121::configAN3944()
uint8_t sectF0 = 0x0b;
if ((rv = writeBytes(0x7b, &sectF0, 1)) != mraa::SUCCESS)
{
cerr << __FUNCTION__ << ": " << __LINE__<< ": I2C write failed." << endl;
throw std::runtime_error(std::string(__FUNCTION__) +
": writeBytes(0x7b) failed");
return false;
}
uint8_t sectF1[] = { 0x9c, 0x65, 0x8c };
if ((rv = writeBytes(0x7d, sectF1, 3)) != mraa::SUCCESS)
{
cerr << __FUNCTION__ << ": " << __LINE__<< ": I2C write failed." << endl;
throw std::runtime_error(std::string(__FUNCTION__) +
": writeBytes(0x7d) failed");
return false;
}
@ -169,7 +180,8 @@ bool MPR121::configAN3944()
eleConf = 0x8c;
if ((rv = writeBytes(0x5e, &eleConf, 1)) != mraa::SUCCESS)
{
cerr << __FUNCTION__ << ": " << __LINE__<< ": I2C write failed." << endl;
throw std::runtime_error(std::string(__FUNCTION__) +
": writeBytes(0x5e) failed");
return false;
}