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pca9685: 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 17:04:41 -06:00 committed by Mihai Tudor Panu
parent d0b5a98952
commit a56485f288
1 changed files with 28 additions and 26 deletions
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54
src/pca9685/pca9685.cxx
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@ -26,6 +26,7 @@
#include <math.h> #include <math.h>
#include <iostream> #include <iostream>
#include <string> #include <string>
#include <stdexcept>
#include "pca9685.h" #include "pca9685.h"
@ -49,7 +50,8 @@ PCA9685::PCA9685(int bus, uint8_t address, bool raw)
if ( !m_i2c) if ( !m_i2c)
{ {
cerr << "PCA9685: mraa_i2c_init() failed." << endl; throw std::invalid_argument(std::string(__FUNCTION__) +
": mraa_i2c_init() failed");
return; return;
} }
@ -57,8 +59,8 @@ PCA9685::PCA9685(int bus, uint8_t address, bool raw)
if ( (rv = mraa_i2c_address(m_i2c, m_addr)) != MRAA_SUCCESS) if ( (rv = mraa_i2c_address(m_i2c, m_addr)) != MRAA_SUCCESS)
{ {
cerr << "PCA9685: Could not initialize i2c bus. " << endl; throw std::runtime_error(std::string(__FUNCTION__) +
mraa_result_print(rv); ": mraa_i2c_address() failed");
return; return;
} }
@ -81,8 +83,8 @@ bool PCA9685::writeByte(uint8_t reg, uint8_t byte)
if (rv != MRAA_SUCCESS) if (rv != MRAA_SUCCESS)
{ {
cerr << __FUNCTION__ << ": mraa_i2c_write_byte() failed." << endl; throw std::runtime_error(std::string(__FUNCTION__) +
mraa_result_print(rv); ": mraa_i2c_write_byte_data() failed");
return false; return false;
} }
@ -95,8 +97,8 @@ bool PCA9685::writeWord(uint8_t reg, uint16_t word)
if (rv != MRAA_SUCCESS) if (rv != MRAA_SUCCESS)
{ {
cerr << __FUNCTION__ << ": mraa_i2c_write_word() failed." << endl; throw std::runtime_error(std::string(__FUNCTION__) +
mraa_result_print(rv); ": mraa_i2c_write_word_data() failed");
return false; return false;
} }
@ -127,13 +129,7 @@ bool PCA9685::setModeSleep(bool sleep)
if (!sleep && restartBit) if (!sleep && restartBit)
mode1 &= ~MODE1_RESTART; mode1 &= ~MODE1_RESTART;
bool rv = writeByte(REG_MODE1, mode1); writeByte(REG_MODE1, mode1);
if (!rv)
{
cerr << __FUNCTION__ << ": write to MODE1 failed." << endl;
return rv;
}
// Need a delay of 500us after turning sleep mode off for the oscillator // Need a delay of 500us after turning sleep mode off for the oscillator
// to stabilize // to stabilize
@ -144,10 +140,10 @@ bool PCA9685::setModeSleep(bool sleep)
if (restartBit && m_restartEnabled && !sleep) if (restartBit && m_restartEnabled && !sleep)
{ {
mode1 |= restartBit; mode1 |= restartBit;
rv = writeByte(REG_MODE1, mode1); writeByte(REG_MODE1, mode1);
} }
return rv; return true;
} }
bool PCA9685::enableAutoIncrement(bool ai) bool PCA9685::enableAutoIncrement(bool ai)
@ -166,8 +162,9 @@ bool PCA9685::ledFullOn(uint8_t led, bool val)
{ {
if (led > 15 && (led != PCA9685_ALL_LED)) if (led > 15 && (led != PCA9685_ALL_LED))
{ {
cerr << __FUNCTION__ << ": led value must be between 0-15 or " throw std::out_of_range(std::string(__FUNCTION__) +
<< "PCA9685_ALL_LED (255)" << endl; ": led value must be between 0-15 or " +
"PCA9685_ALL_LED (255)");
return false; return false;
} }
@ -193,8 +190,9 @@ bool PCA9685::ledFullOff(uint8_t led, bool val)
{ {
if (led > 15 && (led != PCA9685_ALL_LED)) if (led > 15 && (led != PCA9685_ALL_LED))
{ {
cerr << __FUNCTION__ << ": led value must be between 0-15 or " throw std::out_of_range(std::string(__FUNCTION__) +
<< "PCA9685_ALL_LED (255)" << endl; ": led value must be between 0-15 or " +
"PCA9685_ALL_LED (255)");
return false; return false;
} }
@ -220,14 +218,16 @@ bool PCA9685::ledOnTime(uint8_t led, uint16_t time)
{ {
if (led > 15 && (led != PCA9685_ALL_LED)) if (led > 15 && (led != PCA9685_ALL_LED))
{ {
cerr << __FUNCTION__ << ": led value must be between 0-15 or " throw std::out_of_range(std::string(__FUNCTION__) +
<< "PCA9685_ALL_LED (255)" << endl; ": led value must be between 0-15 or " +
"PCA9685_ALL_LED (255)");
return false; return false;
} }
if (time > 4095) if (time > 4095)
{ {
cerr << __FUNCTION__ << ": time value must be between 0-4095" << endl; throw std::out_of_range(std::string(__FUNCTION__) +
": time value must be between 0-4095");
return false; return false;
} }
@ -251,14 +251,16 @@ bool PCA9685::ledOffTime(uint8_t led, uint16_t time)
{ {
if (led > 15 && (led != PCA9685_ALL_LED)) if (led > 15 && (led != PCA9685_ALL_LED))
{ {
cerr << __FUNCTION__ << ": led value must be between 0-15 or " throw std::out_of_range(std::string(__FUNCTION__) +
<< "PCA9685_ALL_LED (255)" << endl; ": led value must be between 0-15 or " +
"PCA9685_ALL_LED (255)");
return false; return false;
} }
if (time > 4095) if (time > 4095)
{ {
cerr << __FUNCTION__ << ": time value must be between 0-4095" << endl; throw std::out_of_range(std::string(__FUNCTION__) +
": time value must be between 0-4095");
return false; return false;
} }