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178 lines
2.9 KiB
C++
178 lines
2.9 KiB
C++
//
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// FILE: ADG729.cpp
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// AUTHOR: Rob Tillaart
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// VERSION: 0.1.0
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// DATE: 2024-07-03
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// PURPOSE: Arduino Library for I2C ADG729 matrix switch. 2x4 Multiplexer.
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// URL: https://github.com/RobTillaart/ADG729
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#include "ADG729.h"
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ADG729::ADG729(uint8_t deviceAddress, TwoWire *wire)
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{
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_address = deviceAddress;
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_wire = wire;
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_mask = 0x00;
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_forced = false;
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_error = ADG729_OK;
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_channels = 8;
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}
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bool ADG729::begin(uint8_t mask)
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{
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if (! isConnected()) return false;
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setChannelMask(mask);
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return true;
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}
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bool ADG729::isConnected()
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{
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_wire->beginTransmission(_address);
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return ( _wire->endTransmission() == 0);
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}
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uint8_t ADG729::channelCount()
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{
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return _channels;
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}
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///////////////////////////////////////////////////////
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//
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// Single channel interface
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//
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bool ADG729::enableChannel(uint8_t channel)
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{
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if (channel >= _channels) return false;
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return setChannelMask(_mask | (0x01 << channel));
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}
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bool ADG729::disableChannel(uint8_t channel)
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{
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if (channel >= _channels) return false;
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return setChannelMask(_mask & ~(0x01 << channel));
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}
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bool ADG729::selectChannel(uint8_t channel)
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{
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if (channel >= _channels) return false;
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return setChannelMask(0x01 << channel);
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}
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bool ADG729::isEnabled(uint8_t channel)
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{
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if (channel >= _channels) return false;
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return (_mask & (0x01 << channel));
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}
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bool ADG729::disableAllChannels()
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{
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return setChannelMask(0x00);
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}
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///////////////////////////////////////////////////////
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//
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// Dual channel interface
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//
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bool ADG729::enableAB(uint8_t channel)
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{
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if (channel >= 4) return false;
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return setChannelMask(_mask | (0x11 << channel));
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}
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bool ADG729::disableAB(uint8_t channel)
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{
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if (channel >= 4) return false;
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return setChannelMask(_mask & ~(0x11 << channel));
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}
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bool ADG729::selectAB(uint8_t channel)
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{
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if (channel >= 4) return false;
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return setChannelMask(0x11 << channel);
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}
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bool ADG729::isEnabledAB(uint8_t channel)
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{
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if (channel >= 4) return false;
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uint8_t tmp = (0x11 << channel);
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return ((_mask & tmp) == tmp);
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}
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bool ADG729::select(uint8_t A, uint8_t B)
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{
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if (A >= 4) return false;
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if (B >= 4) return false;
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uint8_t tmp = (1 << A) | (1 << (B+4));
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return setChannelMask(tmp);
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}
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///////////////////////////////////////////////////////
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//
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// Workers
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//
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bool ADG729::setChannelMask(uint8_t mask)
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{
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if ((_mask == mask) && (not _forced)) return true;
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_mask = mask;
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_wire->beginTransmission(_address);
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_wire->write(_mask);
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_error = _wire->endTransmission();
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return (_error == 0);
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}
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uint8_t ADG729::getChannelMask()
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{
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if (_forced) // read from device.
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{
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_wire->requestFrom(_address, (uint8_t)1);
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_mask = _wire->read();
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}
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return _mask;
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}
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///////////////////////////////////////////////////////
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//
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// Misc
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//
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void ADG729::setForced(bool forced)
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{
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_forced = forced;
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}
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bool ADG729::getForced()
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{
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return _forced;
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}
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int ADG729::getError()
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{
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int error = _error;
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_error = ADG729_OK;
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return error;
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}
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// -- END OF FILE --
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