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Diffstat (limited to 'peripheral/libupm/src/adc121c021/adc121c021.cxx')
| -rw-r--r-- | peripheral/libupm/src/adc121c021/adc121c021.cxx | 261 |
1 files changed, 0 insertions, 261 deletions
diff --git a/peripheral/libupm/src/adc121c021/adc121c021.cxx b/peripheral/libupm/src/adc121c021/adc121c021.cxx deleted file mode 100644 index 7bdb8a3..0000000 --- a/peripheral/libupm/src/adc121c021/adc121c021.cxx +++ /dev/null @@ -1,261 +0,0 @@ -/* - * Author: Jon Trulson <jtrulson@ics.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 <string> -#include <stdexcept> - -#include "adc121c021.h" - -using namespace upm; -using namespace std; - - -ADC121C021::ADC121C021(int bus, uint8_t address, float vref) -{ - // 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; - } - - m_addr = address; - - mraa_result_t ret = mraa_i2c_address(m_i2c, m_addr); - - if (ret != MRAA_SUCCESS) - { - throw std::invalid_argument(std::string(__FUNCTION__) + - ": mraa_i2c_address() failed"); - return; - } - - m_vref = vref; -} - -ADC121C021::~ADC121C021() -{ - mraa_i2c_stop(m_i2c); -} - -mraa_result_t ADC121C021::writeByte(uint8_t reg, uint8_t byte) -{ - return mraa_i2c_write_byte_data(m_i2c, byte, reg); -} - -mraa_result_t ADC121C021::writeWord(uint8_t reg, uint16_t word) -{ - // We need to swap the bytes - uint8_t b1 = (word & 0xff00) >> 8; - word <<= 8; - word |= b1; - - return mraa_i2c_write_word_data(m_i2c, word, reg); -} - -uint8_t ADC121C021::readByte(uint8_t reg) -{ - return mraa_i2c_read_byte_data(m_i2c, reg); -} - -uint16_t ADC121C021::readWord(uint8_t reg) -{ - uint16_t val = mraa_i2c_read_word_data(m_i2c, reg); - uint8_t b1; - - // The value returned is in the wrong byte order, so we need to swap them - b1 = (val & 0xff00) >> 8; - val <<= 8; - val |= b1; - - return val; -} - -uint16_t ADC121C021::value() -{ - // mask off alert flag and reserved bits - return (readWord(ADC121C021_REG_RESULT) & 0x0fff); -} - -float ADC121C021::valueToVolts(uint16_t val) -{ - // The arduino example multiplies this by 2, which seems wrong. If - // the reference voltage is 3.0, then you should never get a voltage - // value higher than that. - // - // val * m_vref * 2.0 / ADC121C021_RESOLUTION - return (val * m_vref / ADC121C021_RESOLUTION); -} - -bool ADC121C021::getAlertStatus() -{ - // high order bit is the alert flag, mask off the rest - bool rv = (readWord(ADC121C021_REG_RESULT) & 0x8000) ? true : false; - - if (rv) - { - // read the alert low and high values and set the appropriate - // member variables - uint8_t astatus = readByte(ADC121C021_REG_ALERT_STATUS); - if (astatus & 0x01) - m_alertLow = true; - else - m_alertLow = false; - - if (astatus & 0x02) - m_alertHigh = true; - else - m_alertHigh = false; - } - - return rv; -} - -void ADC121C021::clearAlertStatus() -{ - // zero out both the low and high alert flags - writeByte(ADC121C021_REG_ALERT_STATUS, 0x03); - - m_alertHigh = false; - m_alertLow = false; -} - -void ADC121C021::enableAlertFlag(bool enable) -{ - // read the current config register - uint8_t val = readByte(ADC121C021_REG_CONFIG); - - if (enable) - val |= 0x08; - else - val &= ~0x08; - - // write the register back - writeByte(ADC121C021_REG_CONFIG, val); -} - -void ADC121C021::enableAlertPin(bool enable) -{ - // read the current config register - uint8_t val = readByte(ADC121C021_REG_CONFIG); - - if (enable) - val |= 0x04; - else - val &= ~0x04; - - // write the register back - writeByte(ADC121C021_REG_CONFIG, val); -} - -void ADC121C021::enableAlertHold(bool enable) -{ - // read the current config register - uint8_t val = readByte(ADC121C021_REG_CONFIG); - - if (enable) - val |= 0x10; - else - val &= ~0x10; - - // write the register back - writeByte(ADC121C021_REG_CONFIG, val); -} - -void ADC121C021::enableAlertPinPolarityHigh(bool enable) -{ - // read the current config register - uint8_t val = readByte(ADC121C021_REG_CONFIG); - - if (enable) - val |= 0x01; - else - val &= ~0x01; - - // write the register back - writeByte(ADC121C021_REG_CONFIG, val); -} - -void ADC121C021::setAutomaticConversion(ADC121C021_CYCLE_TIME_T cycleTime) -{ - // first we - - // read the current config register, masking off the cycle time bits - uint8_t val = readByte(ADC121C021_REG_CONFIG) & 0x1f; - - val |= ((uint8_t)cycleTime << 5); - - // write the register back - writeByte(ADC121C021_REG_CONFIG, val); -} - -mraa_result_t ADC121C021::setAlertLowLimit(uint16_t limit) -{ - // mask off the invalid bits in case they were set - limit &= 0x0fff; - - // write it - return writeWord(ADC121C021_REG_ALERT_LIM_UNDER, limit); -} - -mraa_result_t ADC121C021::setAlertHighLimit(uint16_t limit) -{ - // mask off the invalid bits in case they were set - limit &= 0x0fff; - - // write it - return writeWord(ADC121C021_REG_ALERT_LIM_OVER, limit); -} - -mraa_result_t ADC121C021::setHysteresis(uint16_t limit) -{ - // mask off the invalid bits in case they were set - limit &= 0x0fff; - - // write it - return writeWord(ADC121C021_REG_ALERT_HYS, limit); -} - -uint16_t ADC121C021::getHighestConversion() -{ - return readWord(ADC121C021_REG_HIGHEST_CONV); -} - -uint16_t ADC121C021::getLowestConversion() -{ - return readWord(ADC121C021_REG_LOWEST_CONV); -} - -mraa_result_t ADC121C021::clearHighestConversion() -{ - return writeWord(ADC121C021_REG_HIGHEST_CONV, 0x0000); -} - -mraa_result_t ADC121C021::clearLowestConversion() -{ - return writeWord(ADC121C021_REG_LOWEST_CONV, 0x0fff); -} |