AN3209 datasheet(37/42 Pages) STMICROELECTRONICS

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AN3209

M24LR64-R RF commands

Doc ID 17419 Rev 2

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B.3

Read single block

The Read Single Block ISO 15693 command is performed by calling the

ReadRF_single_DataLogger() function.

B.4

Read Multiple Block

The Read Multiple Block ISO 15693 command is performed by calling the

ReadRF_multiple_DataLogger() function:

Table 12.

ReadRF_single_DataLogger()

Function description

Prototype

Function ReadRF_single_DataLogger (lngAddLow As Long,

lngDataSize As Long, lngNbByteAddress As Long) As String

Parameters

lngAddLow: address the read operation starts from

lngDataSize: number of data bytes to be read

lngNbByteAddress: number of bytes used to code the address

Returned

value

String

Example

ReadRF_single_DataLogger(0, 4, 2) returns the 4 bytes read from address

0 coded on 2 bytes.

Table 13.

ReadRF_multiple_DataLogger()

Function description

Prototype

Function ReadRF_multiple_DataLogger (lngAddLow As Long,

lngRowNumber As Long, lngDataSize As Long, lngNbByteAddress As

Long) As String

Parameters

lngAddLow: address the read operation starts from

lngRowNumber: number of blocks to be read (maximum 32)

lngDataSize: number of bytes per block

lngNbByteAddress: number of bytes used to code the address

Returned

value

String

Example

ReadRF_multiple_DataLogger(0,32,4,2) returns in 32*4 bytes read from the address

0 coded on 2 bytes.

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