#define NXTLineLeaderSnapshot ( _port,
_i2caddr,
_result   )     __I2CSendCmd(_port, _i2caddr, NXTLL_CMD_SNAPSHOT, _result)

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.

Parameters:
_port The sensor port. See NBC Input port constants.
_i2caddr The sensor I2C address. See sensor documentation for this value.
_result A status code indicating whether the operation completed successfully or not. See TCommLSCheckStatus for possible Result values.

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