NAME

   Device::Chip::AnalogConverters - a collection of chip drivers

DESCRIPTION

   This distribution contains a number of Device::Chip drivers for various
   ADC and DAC chips.

ADCs

     * Device::Chip::ADS1115

     * Device::Chip::LTC2400

     * Device::Chip::MCP3221

     * Device::Chip::MAX11200

SUGGESTED ADC METHODS

 trigger

      $chip->trigger( %args )->get

   Optional. This method asks the chip to begin taking a reading.

 read_adc

      $value = $chip->read_adc->get

   Obtains the most recent reading performed by the chip, as a plain
   integer value. This may be signed or unsigned, scaled to whatever
   precision the chip works at.

 read_adc_voltage

      $voltage = $chip->read_adc_voltage->get

   If the chip contains an internal reference, or in some other way the
   scale is known by the driver, this method should be provided that
   converts the result of "read_adc" into an actual signed voltage.

 read_adc_ratio

      $ratio = $chip->read_adc_ratio->get

   If the chip (driver) does not have a reference to scale convert the
   output directly to a voltage level, then this method should be provided
   instead that merely scales the raw reading down by a factor such that
   the returned value is a floating-point number between 0 and 1 for
   unipolar (single-ended unsigned) readings, or between -1 and 1 for
   bipolar (differential signed) readings.

DACs

     * Device::Chip::AD5691R

     * Device::Chip::DAC7571

     * Device::Chip::MCP4725

SUGGESTED DAC METHODS

 write_dac

      $chip->write_dac( $value )->get

   Sets the value of the DAC's output as a plain integer value. This may
   be signed or unsigned, scaled to whatever precision the chip works at.

 write_dac_voltage

      $chip->write_dac_voltage( $voltage )->get

   If the chip contains an internal reference, or in some other way the
   scale is known by the driver, this method should be provided that
   converts the given voltage into a raw value to invoke "write_dac" with.

 write_dac_ratio

      $chip->write_dac_ratio( $ratio )->get

   If the chip (driver) does not have a reference to scale convert a given
   voltage to a DAC code valjue, then this method should be provided
   instead that takes a given ratio, as a floating-point number between 0
   and 1 for unipolar (single-ended unsigned) outputs or between -1 and 1
   for bipolar (differential signed) outputs, and scales it by a suitable
   factor.

AUTHOR

   Paul Evans <[email protected]>