diff options
Diffstat (limited to 'peripheral/libupm/src/max44009/max44009.cxx')
-rw-r--r-- | peripheral/libupm/src/max44009/max44009.cxx | 94 |
1 files changed, 0 insertions, 94 deletions
diff --git a/peripheral/libupm/src/max44009/max44009.cxx b/peripheral/libupm/src/max44009/max44009.cxx deleted file mode 100644 index d7696c1..0000000 --- a/peripheral/libupm/src/max44009/max44009.cxx +++ /dev/null @@ -1,94 +0,0 @@ -/* - * Author: Scott Ware <scott.r.ware@intel.com> - * Copyright (c) 2014 Intel Corporation. - * - * Permission is hereby granted, free of charge, to any person obtaining - * a copy of this software and associated documentation files (the - * "Software"), to deal in the Software without restriction, including - * without limitation the rights to use, copy, modify, merge, publish, - * distribute, sublicense, and/or sell copies of the Software, and to - * permit persons to whom the Software is furnished to do so, subject to - * the following conditions: - * - * The above copyright notice and this permission notice shall be - * included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE - * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION - * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION - * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. - */ - -#include <iostream> -#include <unistd.h> -#include <stdlib.h> -#include <math.h> - -#include "max44009.hpp" - -using namespace upm; - -MAX44009::MAX44009 (int bus, int devAddr) { - - m_maxControlAddr = devAddr; - i2c = new mraa::I2c(bus); - i2c->address(m_maxControlAddr); - - // Reset chip to defaults - status = mraa::SUCCESS; - reset(); - if (status != mraa::SUCCESS) - UPM_THROW("config failure"); -} - -MAX44009::~MAX44009() { - delete i2c; -} - -mraa::Result -MAX44009::reset() { - uint8_t address[5] = {MAX44009_INT_ENABLE_ADDR, MAX44009_CONFIG_ADDR, \ - MAX44009_THR_HIGH_ADDR, MAX44009_THR_LOW_ADDR, \ - MAX44009_THR_TIMER_ADDR}; - uint8_t value[5] = {MAX44009_INT_DISABLED, MAX44009_DEFAULT_CONFIGURATION, \ - 0xFF, 0x00, 0xFF}; - uint8_t i; - for (i = 0; i < sizeof(address) && status == mraa::SUCCESS; i++) { - status = i2c->writeReg(address[i], value[i]); - } - return status; -} - -uint16_t -MAX44009::getVisibleRaw() { - uint8_t exponent, mantissa; - uint8_t data[MAX44009_LUX_LENGTH]; - uint16_t* value = reinterpret_cast<uint16_t*>(&data[0]); - - int length = i2c->readBytesReg(MAX44009_LUX_START_ADDR, data, MAX44009_LUX_LENGTH); - - if(length != MAX44009_LUX_LENGTH) - UPM_THROW("Read error"); - - return *value; -} - - -double -MAX44009::getVisibleLux() { - uint16_t rawValue = getVisibleRaw(); - uint8_t rawValueMsb = rawValue >> 8; - uint8_t rawValueLsb = rawValue & 0xFF; - uint8_t exponent = (( rawValueMsb & 0xF0 ) >> 4); - uint8_t mantissa = (( rawValueMsb & 0x0F ) << 4 ) | ( rawValueLsb & 0x0F ); - - // Check for overrange condition - if(exponent == MAX44009_OVERRANGE_CONDITION) - UPM_THROW("Overrange error"); - - return pow((double)2,(double)exponent) * mantissa * 0.045; -} - |