/*!
LTC2440: 24-Bit, Differential Delta Sigma ADCs with Selectable Speed/Resolution.

@verbatim

The LTC2440 is a high speed 24-bit No Latency Delta Sigma TM ADC with 5ppm
INL and 5uV offset. It uses proprietary delta-sigma architecture enabling
variable speed and resolution with no latency. Ten speed/resolution
combinations (6.9Hz/200nVRMS to 3.5kHz/25uVRMS) are programmed through a
simple serial interface. Alternatively, by tying a single pin HIGH or
LOW, a fast (880Hz/2uVRMS) or ultralow noise (6.9Hz, 200nVRMS, 50/60Hz
rejection) speed/resolution combination can be easily selected. The
accuracy (offset, full-scale, linearity, drift) and power dissipation are
independent of the speed selected. Since there is no latency, a
speed/resolution change may be made between conversions with no
degradation in performance.

@endverbatim

http://www.linear.com/product/LTC2440

http://www.linear.com/product/LTC2440#demoboards


Copyright 2018(c) Analog Devices, Inc.

All rights reserved.

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 - The use of this software may or may not infringe the patent rights
   of one or more patent holders.  This license does not release you
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THIS SOFTWARE IS PROVIDED BY ANALOG DEVICES "AS IS" AND ANY EXPRESS OR
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*/

//! @ingroup Analog_to_Digital_Converters
//! @{
//! @defgroup LTC2440 LTC2440: 24-Bit, Differential Delta Sigma ADCs with Selectable Speed/Resolution
//! @}

/*! @file
    @ingroup LTC2440
    Library for LTC2440: 24-Bit, Differential Delta Sigma ADCs with Selectable Speed/Resolution
*/

#include <stdint.h>
#include <Arduino.h>
#include "Linduino.h"
#include "LT_I2C.h"
#include "LT_SPI.h"
#include "LTC2440.h"
#include "LTC24XX_general.h"


// Checks for EOC with a specified timeout.
// Returns 0=successful, 1=unsuccessful (exceeded timeout)
int8_t LTC2440_EOC_timeout(uint8_t cs, uint16_t miso_timeout)
{
  return(LTC24XX_EOC_timeout(cs, miso_timeout));
}

// Reads from LTC2440.
void LTC2440_read(uint8_t cs, uint8_t adc_command, int32_t *adc_code)
{
  LTC24XX_SPI_8bit_command_32bit_data(cs, adc_command, adc_code);    // Transfer data
}

// Calculates the voltage corresponding to an ADC code, given the reference (in volts)
float LTC2440_code_to_voltage(int32_t adc_code, float vref)
{
  return(LTC24XX_diff_code_to_voltage(adc_code, vref));
}