AN3224 datasheet(34/49 Pages) STMICROELECTRONICS

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RF ISO 15693 Transparent commands

AN3224

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Doc ID 17559 Rev 2

Table 16.

FEISC_0xBF_ISOTranspCmd C/C++ prototype

Function description

Prototype

iResult = FEISC_0xBF_ISOTranspCmd(iFeiscHandle, 0xFF, M,

iRspLength, &sReqData[0], iReqLen,

&sRspData[0],&iRspLen, N);

Parameters

IFeiscHandle: USB reader handle which has been filled in after the reader

detection process (FEISC_NewReader function).

0xFF: Communication address.

M: Mode. The method used by the Transparent command to detect the

transponder answer depends on the mode.

1: answer detected after reception of a Read request

2: answer detected after reception of a Write request with Option_flag = 0.

3: answer detected after reception of a Write request with Option_flag = 1.

4: answer detected after reception of an Inventory request

&iRspLength: Expected RF answer size (bit number)

&sReqData: RF request frame to be sent to the reader.

iReqLen: RF request frame length (sReqData)

&sRspData: Transponder answer (if any). This variable is filled after the

USB request is issued. Before sending any USB request, sRspData must

be formatted as follows:

char sRspData[64]={0}

&isRspLen: sRspData length (0 if no answer)

N: Format of all the parameters passed to the function

0: ASCII.

Example: ‘2356’ corresponds to the string ‘#V’ composed of 2 ASCII

codes.

1: Characters.

Example: ‘2356’ corresponds to 4 characters (2, 3, 5, 6)

2: Hexadecimal.

Example: ‘2356’ corresponds to 2 bytes (0x23 and 0x56)

Returned value

iResult: error code

0: USB request transmission successful

1: USB request transmission failed

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