NXC  Version 1.2.1 r5
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char NXTLineLeaderSnapshot ( const byte &  port,
const byte &  i2caddr 

Take NXTLineLeader line snapshot.

Takes a snapshot of the line under the sensor and tracks that position in subsequent tracking operations. This function also will set color inversion if it sees a white line on a black background. The port must be configured as a Lowspeed port before using this function.

portThe sensor port. See NBC Input port constants.
i2caddrThe sensor I2C address. See sensor documentation for this value.
A status code indicating whether the operation completed successfully or not. See CommLSCheckStatusType for possible Result values.