HI2CStartOccurred

Syntax:

    HI2CStartOccurred

Command Availability:

Only available for microcontrollers with the hardware I2C or TWI module.

Explanation:

Check if a start condition has occurred since the last run of this function.

Only used in slave mode.

Note:

This command is also available on microcontrollers with a second hardware I2C port.

    HI2C2StartOccurred

Example:

    'Slave-mode polling loop that waits for the master to begin a transmission
    Do
        If HI2CStartOccurred Then          ' <<< the HI2CStartOccurred instruction
            HI2CReceive DataByte
        End If
    Loop

Key line: If HI2CStartOccurred Then — checks whether the master has issued a start condition on the hardware I2C module since this function was last called, so the slave only attempts to receive data once a transmission has actually begun.

Supported in <HI2C.H>

See Also:

  • HI2C Overview — category overview
  • HI2CStart — related command in the same category
  • HI2CStop — related command in the same category
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