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4259aeab7b
Initial commit of ADS1x15 adc converter. Support for both ADS1015 12 bit and ADS1115 16 bit adc. --signoff Signed-off-by: Marc Graham <marc@m2ag.net> Signed-off-by: Mihai Tudor Panu <mihai.tudor.panu@intel.com>
104 lines
2.7 KiB
C++
104 lines
2.7 KiB
C++
/*
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* Author: Marc Graham <marc@m2ag.net>
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* Copyright (c) 2015 Intel Corporation.
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include "ads1115.h"
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using namespace upm;
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ADS1115::ADS1115(int bus, uint8_t address) : ADS1X15(bus, address) {
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m_name = "ADS1115";
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m_conversionDelay = ADS1115_CONVERSIONDELAY;
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m_bitShift = 0;
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ADS1X15::getCurrentConfig();
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}
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ADS1115::~ADS1115(){};
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void
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ADS1115::setSPS(ADSDATARATE rate){
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updateConfigRegister((m_config_reg & ~ADS1X15_DR_MASK) | rate);
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}
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//Protected functions
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float
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ADS1115::getMultiplier(void){
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float multi = 0.0;
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switch((ADSGAIN)m_config_reg & ADS1X15_PGA_MASK){
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case GAIN_TWOTHIRDS:
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multi = 0.0001875;
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break;
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case GAIN_ONE:
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multi = 0.000125;
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break;
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case GAIN_TWO:
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multi = 0.0000625;
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break;
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case GAIN_FOUR:
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multi = 0.00003125;
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break;
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case GAIN_EIGHT:
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multi = 0.000015625;
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break;
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case GAIN_SIXTEEN:
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multi = 0.0000078125;
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break;
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default:
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multi = 0.0001875;
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break;
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}
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return multi;
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}
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void
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ADS1115::setDelay(){
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switch((int)ADS1X15::getSPS()){
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case 0:
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m_conversionDelay = 126000;
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break;
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case 32:
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m_conversionDelay = 63000;
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break;
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case 64:
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m_conversionDelay = 32000;
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break;
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case 96:
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m_conversionDelay = 16000;
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break;
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case 128:
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m_conversionDelay = 8000;
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break;
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case 160:
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m_conversionDelay = 4500;
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break;
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case 192:
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m_conversionDelay = 2200;
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break;
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case 224:
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m_conversionDelay = 1200;
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break;
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default:
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m_conversionDelay = 126000;
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break;
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}
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}
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