Skip to content

Main content

Microcontroller: GPIO Active Low Logical Value Tool

Crosswalk one GPIO electrical level to asserted logical state under an explicit active-low flag; no register access or electrical-threshold inference.

Loading tool…

Description

Return logicalAsserted when electricalHigh differs from activeLow.

An electrical level and a logical assertion are different concepts. Active-low signals invert that relationship, while an undriven open-drain node needs a pull-up to establish high.

Return logicalAsserted when electricalHigh differs from activeLow.

When to use this tool

Use Microcontroller: GPIO Active Low Logical Value when you need a simple GPIO polarity or ideal state interpretation.

How to use the tool and how it works

  1. Enter electricalHigh, activeLow. Use the units and conventions below.
  2. Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
  3. Read result. Expand result to inspect the returned fields.

Return logicalAsserted when electricalHigh differs from activeLow.1

Input fieldMeaning and unitsAccepted input
electricalHighElectrical HighRequired. Boolean.
activeLowActive LowRequired. Boolean.
Output fieldInterpretationReturned shape
resultResultRequired. Object.
result.logicalAssertedLogical AssertedCalculated result member: boolean.
json
{
  "input": {
    "electricalHigh": false,
    "activeLow": true
  },
  "output": {
    "result": {
      "logicalAsserted": true
    }
  }
}

Limitations and assumptions

  • This Boolean polarity mapping does not establish a valid voltage level or safe device state.
  • Outputs are nested inside result. Inputs must satisfy both the field types and the cross-field conditions above. Invalid input causes an error; a successful false flag or documented placeholder is a different result.

Alternative or Complementary methods

Check electrical thresholds, pull resistors, timing, and the device's configured mode for the actual circuit.

References

  1. Calculation and input contract: microcontroller/gpio-active-low-logical-value — tool.io

Similar or alternative tools