AN3955 datasheet(23/68 Pages) STMICROELECTRONICS

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AN3955

CR95HF low level layer

Doc ID 022017 Rev 1

23/68

4.14

IsReaderResultCodeOk function

This function returns CR95HF_SUCCESS_CODE if the CR95HF command has succeeded.

Table 22 describes the CR95HF_IsReaderResultCodeOk function.

4.15

IsReaderErrorCode function

This function returns CR95HF_SUCCESS_CODE value if the CR95HF command has returned

an error code. Table 23 describes the CR95HF_IsReaderErrorCode function.

4.16

IsCommandExists function

This function returns CR95HF_SUCCESS_CODE if the CmdCode value exists. Table 24

describes the CR95HF_IsCommandExists function.

Table 22.

CR95HF_IsReaderResultCodeOk function description

Prototype

result = int8_t

CR95HF_IsReaderResultCodeOk (uint8_t

CmdCode,uc8 *ReaderReply);

Input parameter

CmdCode: Command code (one byte)

ReaderReply: Pointer to CR95HF response

Output parameter

None

Return parameter

CR95HF_NOREPLY_CODE: No CR95HF response

CR95HF_SUCCESS_CODE: Function is successful.

CR95HF_ERROR_CODE: Function failed. CR95HF does

not return a correct code.

Table 23.

CR95HF_IsReaderErrorCode

function description

Prototype

result = int8_t CR95HF_IsReaderErrorCode (uint8_t

CmdCode,uint8_t *ReaderReply);

Input parameter

CmdCode: Command code (one byte)

ReaderReply: Pointer to CR95HF response

Output parameter

None

Return parameter

CR95HF_NOREPLY_CODE: No CR95HF response

CR95HF_SUCCESS_CODE: Function is successful.

CR95HF_ERROR_CODE: Function failed. CR95HF does not return an error code.

Table 24.

CR95HF_IsCommandExists

function description

Prototype

result = int8_t CR95HF_IsCommandExists(uint8_t

CmdCode);

Input parameter

CmdCode: Command code (one byte)

Output parameter None

Return parameter

CR95HF_SUCCESS_CODE: Function is successful.

CR95HF_ERRORCODE_COMMANDUNKNOWN: The command code is unknown.

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