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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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AN3985 датащи(PDF) 14 Page - STMicroelectronics |
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AN3985 датащи(HTML) 14 Page - STMicroelectronics |
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14 / 105 page  CR95HF low level layer AN3985 14/105 Doc ID 022255 Rev 2 4.2.2 Response format A response from CR95HF to MCU is composed of three fields: ● response code ● length ● data The dedicated structure is CR95HF_ResponseReceiving. Table 3 lists the fields of a generic response from CR95HF, the number of bytes and the name of the dedicated structure member. The structure definition of a response from CR95HF is: typedef struct { u8 resp_code; u8 data_length; u8 data[MAX_DATARECEIVED_LENGTH]; }CR95HF_CommandSending; 4.2.3 Protocol selection structure The CR95HF can use different RF protocols: ● ISO/IEC 14443 type A or type B ● ISO/IEC 15693 ● ISO/IEC 18092 Each protocol has its own parameters. The Protocol_Config structure displays the RF protocol parameters. Table 4 lists the protocol parameters. The structure definition of a protocol selection structure is: typedef struct { Table 3. Response field formats Field Length Dedicated structure RF protocol 1 byte resp_code Length 1 byte data_lenght Data Up to 255 bytes data Table 4. Protocol parameter formats Field Length Dedicated structure Response code 1 byte protocol_in_use Length 1 byte parameters_lenght Data Up to 3 bytes parameters |
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