mirror of
https://github.com/RobTillaart/Arduino.git
synced 2024-09-19 16:46:11 -04:00
180 lines
3.5 KiB
C++
180 lines
3.5 KiB
C++
//
|
|
// FILE: DAC8552.cpp
|
|
// AUTHOR: Rob Tillaart
|
|
// PURPOSE: Arduino library for DAC8552 SPI Digital Analog Convertor
|
|
// VERSION: 0.3.0
|
|
// DATE: 2017-12-14
|
|
// URL: https://github.com/RobTillaart/DAC8552
|
|
|
|
|
|
#include "DAC8552.h"
|
|
|
|
|
|
DAC8552::DAC8552(uint8_t select, __SPI_CLASS__ * spi)
|
|
{
|
|
_select = select;
|
|
_dataOut = 255;
|
|
_clock = 255;
|
|
_mySPI = spi;
|
|
_hwSPI = true;
|
|
}
|
|
|
|
|
|
DAC8552::DAC8552(uint8_t select, uint8_t spiData, uint8_t spiClock)
|
|
{
|
|
_select = select;
|
|
_dataOut = spiData;
|
|
_clock = spiClock;
|
|
_mySPI = NULL;
|
|
_hwSPI = false;
|
|
}
|
|
|
|
|
|
// initializes the SPI
|
|
// and sets internal state
|
|
void DAC8552::begin()
|
|
{
|
|
pinMode(_select, OUTPUT);
|
|
digitalWrite(_select, HIGH);
|
|
|
|
_spi_settings = SPISettings(_SPIspeed, MSBFIRST, SPI_MODE1);
|
|
|
|
if(_hwSPI)
|
|
{
|
|
_mySPI->end();
|
|
_mySPI->begin();
|
|
delay(1);
|
|
}
|
|
else // SOFTWARE SPI
|
|
{
|
|
pinMode(_dataOut, OUTPUT);
|
|
pinMode(_clock, OUTPUT);
|
|
digitalWrite(_dataOut, LOW);
|
|
digitalWrite(_clock, LOW);
|
|
}
|
|
|
|
_value[0] = 0;
|
|
_value[1] = 0;
|
|
_register[0] = 0x00;
|
|
_register[1] = 0x40;
|
|
}
|
|
|
|
|
|
// channel = 0, 1, 2, 3 depending on type
|
|
// value = 0..65535
|
|
void DAC8552::bufferValue(uint8_t channel, uint16_t value)
|
|
{
|
|
_value[channel] = value;
|
|
updateDevice(channel, false);
|
|
}
|
|
|
|
|
|
// channel = 0, 1, 2, 3 depending on type
|
|
// value = 0..65535
|
|
void DAC8552::setValue(uint8_t channel, uint16_t value)
|
|
{
|
|
_value[channel] = value;
|
|
updateDevice(channel, true);
|
|
}
|
|
|
|
|
|
// channel = 0, 1, 2, 3 depending on type
|
|
// returns 0..65535
|
|
uint16_t DAC8552::getValue(uint8_t channel)
|
|
{
|
|
return _value[channel];
|
|
}
|
|
|
|
|
|
void DAC8552::bufferPowerDown(uint8_t channel, uint8_t powerDownMode)
|
|
{
|
|
_register[channel] &= 0xFC;
|
|
_register[channel] |= (powerDownMode & 0x03);
|
|
updateDevice(channel, false);
|
|
}
|
|
|
|
|
|
void DAC8552::setPowerDown(uint8_t channel, uint8_t powerDownMode)
|
|
{
|
|
_register[channel] &= 0xFC;
|
|
_register[channel] |= (powerDownMode & 0x03);
|
|
updateDevice(channel, true);
|
|
}
|
|
|
|
|
|
uint8_t DAC8552::getPowerDownMode(uint8_t channel)
|
|
{
|
|
return _register[channel] & 0x03;
|
|
}
|
|
|
|
|
|
void DAC8552::setSPIspeed(uint32_t speed)
|
|
{
|
|
_SPIspeed = speed;
|
|
_spi_settings = SPISettings(_SPIspeed, MSBFIRST, SPI_MODE1);
|
|
};
|
|
|
|
|
|
//////////////////////////////////////////////////////////////////
|
|
//
|
|
// PROTECTED
|
|
//
|
|
|
|
// channel = 0, 1, 2, 3 depending on type
|
|
// direct = true ==> write buffers to both channel A and channel B
|
|
// direct = false ==> buffer value
|
|
void DAC8552::updateDevice(uint8_t channel, bool directWrite)
|
|
{
|
|
uint8_t configRegister = _register[channel];
|
|
if (directWrite) configRegister |= 0x30;
|
|
|
|
digitalWrite(_select, LOW);
|
|
if (_hwSPI)
|
|
{
|
|
_mySPI->beginTransaction(_spi_settings);
|
|
_mySPI->transfer(configRegister);
|
|
_mySPI->transfer(_value[channel] >> 8);
|
|
_mySPI->transfer(_value[channel] & 0xFF);
|
|
_mySPI->endTransaction();
|
|
}
|
|
else // Software SPI
|
|
{
|
|
swSPI_transfer(configRegister);
|
|
swSPI_transfer(_value[channel] >> 8);
|
|
swSPI_transfer(_value[channel] & 0xFF);
|
|
}
|
|
digitalWrite(_select, HIGH);
|
|
}
|
|
|
|
|
|
// simple one mode version
|
|
void DAC8552::swSPI_transfer(uint8_t value)
|
|
{
|
|
uint8_t clk = _clock;
|
|
uint8_t dao = _dataOut;
|
|
for (uint8_t mask = 0x80; mask; mask >>= 1)
|
|
{
|
|
digitalWrite(dao,(value & mask));
|
|
digitalWrite(clk, HIGH);
|
|
digitalWrite(clk, LOW);
|
|
}
|
|
}
|
|
|
|
|
|
/////////////////////////////////////////////////////////
|
|
//
|
|
// DERIVED CLASSES DAC8532
|
|
//
|
|
DAC8532::DAC8532(uint8_t select, __SPI_CLASS__ * spi) : DAC8552(select, spi)
|
|
{
|
|
}
|
|
|
|
DAC8532::DAC8532(uint8_t select, uint8_t spiData, uint8_t spiClock)
|
|
: DAC8552(select, spiData, spiClock)
|
|
{
|
|
}
|
|
|
|
|
|
// -- END OF FILE --
|
|
|