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12.7 Structure of the Library
12.7.1 RFID_ANTENNA_PORT_CONFIG
Description:
The configuration parameters for a logical antenna port.
Define:
typedef struct {
INT32U length;
INT32U powerLevel;
INT32U dwellTime;
INT32U numberInventoryCycles;
INT32U physicalRxPort;
INT32U physicalTxPort;
INT32U antennaSenseThreshold;
} RFID_ANTENNA_PORT_CONFIG;
Fields:
length
- The length of the structure in bytes. Must be set to by the application to
sizeof(RFID_ANTENNA_PORT_CONFIG)
powerLevel
- The power level for the logical antenna port's physical transmit antenna.
This value is specified in 0.1 (i.e., 1/10th) dBm. the value must between 0 and 300 and,
280 is The most appropriate value.
dwellTime
- The number of milliseconds to spend on this antenna port during a cycle.
Zero indicates that antenna usage will be ontrolled by the numberInventoryCycles field.
numberInventoryCycles
- The number of inventory rounds to perform with this antenna
port. Zero indicates that the antenna usage will be controlled by the dwellTime field.
physicalRxPort
- he underlying physical receive antenna port associated with the
logical antenna port. Must be between 0 and 3, inclusive.
physicalTxPort
- The underlying physical transmit antenna port associated with the
logical antenna port. Must be between 0 and 3, inclusive.
antennaSenseThreshold
- The measured resistance, specified in ohms.
Note: *In version 1.0 physicalRxPort and physicalTxPort's value must be the same.
*dwellTime and numberInventoryCycles can not both be zero. *length field must be fill
with the length of the structure before call the config function.
