Variable ads1115Const

Type Declaration

• addressGnd: number

  The address with ADDR tied to ground.

• addressScl: number

  The address with ADDR tied to SCL.

• addressSda: number

  The address with ADDR tied to SDA.

• addressVdd: number

  The address with ADDR tied to VDD.

• configReset: number

  The value the configuration register reads after a reset.

• dataRate: {
      sps128: number;
      sps16: number;
      sps250: number;
      sps32: number;
      sps475: number;
      sps64: number;
      sps8: number;
      sps860: number;
  }

  The data-rate codes, in samples per second.

  • sps128: number

    128 per second, the reset setting.

  • sps16: number

    16 per second.

  • sps250: number

    250 per second.

  • sps32: number

    32 per second.

  • sps475: number

    475 per second.

  • sps64: number

    64 per second.

  • sps8: number

    8 per second.

  • sps860: number

    860 per second.

• mux: {
      ain0Ain1: number;
      ain0Ain3: number;
      ain0Gnd: number;
      ain1Ain3: number;
      ain1Gnd: number;
      ain2Ain3: number;
      ain2Gnd: number;
      ain3Gnd: number;
  }

  The input multiplexer codes.

  • ain0Ain1: number

    AIN0 against AIN1, the reset setting.

  • ain0Ain3: number

    AIN0 against AIN3.

  • ain0Gnd: number

    AIN0 against ground.

  • ain1Ain3: number

    AIN1 against AIN3.

  • ain1Gnd: number

    AIN1 against ground.

  • ain2Ain3: number

    AIN2 against AIN3.

  • ain2Gnd: number

    AIN2 against ground.

  • ain3Gnd: number

    AIN3 against ground.

• pga: {
      fsr0_256: number;
      fsr0_512: number;
      fsr1_024: number;
      fsr2_048: number;
      fsr4_096: number;
      fsr6_144: number;
  }

  The gain codes, by the full-scale range each selects.

  • fsr0_256: number

    0.256 V.

  • fsr0_512: number

    0.512 V.

  • fsr1_024: number

    1.024 V.

  • fsr2_048: number

    2.048 V, the reset setting.

  • fsr4_096: number

    4.096 V.

  • fsr6_144: number

    6.144 V either side of zero.

• register: { config: number; conversion: number; hiThresh: number; loThresh: number }

  The registers the pointer selects.

  • config: number

    Input, gain, mode, data rate, and comparator settings.

  • conversion: number

    The last conversion, two's complement.

  • hiThresh: number

    The comparator's high threshold.

  • loThresh: number

    The comparator's low threshold.

• sim: {
      volts: number;
      part(address: number): hal.WordPart;
      reporting(address: number, pga: number, volts: number): hal.WordPart;
  }

  An ADS1115 that is not there, for a bus with nothing plugged in. A conversion comes back as a count of the range the gain selects, so reporting takes the same gain a driver is given.

  • volts: number

    The voltage part reports: half a 3.3 V supply.

  • part: function

    • part(address: number): hal.WordPart

      A part reading 1.65 V at the range a driver starts with.

      Parameters

      • address: number

        The address it answers to.

      Returns hal.WordPart

      The part, to put on a simulated bus.

  • reporting: function

    • reporting(address: number, pga: number, volts: number): hal.WordPart

      A part that reads what it is asked to, on the nearest of the 32768 steps either side of zero the range divides into.

      Parameters

      • address: number

        The address it answers to.

      • pga: number

        The gain code the driver converts at.

      • volts: number

        The voltage it reports, held to the range.

      Returns hal.WordPart

      The part, to put on a simulated bus.

• configBits: function

  • configBits(config: Ads1115Config): number

    Assembles the 16-bit configuration register value.

    Parameters

    • config: Ads1115Config

      The settings to encode.

    Returns number

    The register value to write, most significant bit first.

• configFromBits: function

  • configFromBits(bits: number): Ads1115Config

    Parses a 16-bit configuration register value.

    Parameters

    • bits: number

      The register value, as read from the device.

    Returns Ads1115Config

    The decoded settings. Every value decodes, so this never throws.

• conversionMicros: function

  • conversionMicros(dataRate: number): number

    Returns how long a conversion takes at a data rate: one period plus the datasheet's ten percent rate variation.

    Parameters

    • dataRate: number

      One of the ads1115.dataRate codes.

    Returns number

    The time in microseconds.

• fullScaleMicrovolts: function

  • fullScaleMicrovolts(pga: number): number

    Returns the full-scale range a gain code selects.

    Parameters

    • pga: number

      The gain code, 0 to 7.

    Returns number

    The full scale in microvolts.

• samplesPerSecond: function

  • samplesPerSecond(dataRate: number): number

    Returns the sample rate a data-rate code selects.

    Parameters

    • dataRate: number

      The data-rate code, 0 to 7.

    Returns number

    The rate in samples per second.

• toNanovolts: function

  • toNanovolts(pga: number, raw: number): number

    Converts a raw conversion result to nanovolts.

    Parameters

    • pga: number

      The gain the conversion was taken at.

    • raw: number

      The signed conversion register value.

    Returns number

    The measured voltage, exact at every gain setting.

• toVolts: function

  • toVolts(pga: number, raw: number): number

    Converts a raw conversion result to volts.

    Parameters

    • pga: number

      The gain the conversion was taken at.

    • raw: number

      The signed conversion register value.

    Returns number

    The measured voltage.