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AN3985 Datasheet(PDF) 36 Page - STMicroelectronics

Part # AN3985
Description  Using the CR95HF library with STM8L microcontrollers
PDF  105 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN3985 Datasheet(HTML) 36 Page - STMicroelectronics

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ISO/IEC 15693 layer
AN3985
36/105
Doc ID 022255 Rev 2
5.4.1
Compute parameter byte functions
These functions compute a parameter field which will be used in other functions.
ISO15693_ComputeParameterByte_ProtocolSelect function
This function computes the parameter byte for ISO/IEC 15693 ProtocolSelect command,
bit0 is set to 1 to append CRC (see Chapter 5.3.4: CRC16 management).
Table 48.
Structure Fill In functions
Function name
Brief description
ISO156693_Check_Data_Received_Start_
Process
Checks if the CRC is correct and fills the structure
with the data common for all tag responses.
ISO15693_Retrieve_UID
Fills the Tag structure with the UID.
ISO15693_Retrieve_ICRef
Fills the Tag structure with the ICRef using the UID.
Table 49.
ISO15693_ComputeParameterByte_ProtocolSelect function description
Prototype
u8
CR95HF_ISO15693_ComputeParameterByte_ProtocolSelect
(u8 Bit7_6,u8 Bit5_4,u8 Bit3,u8 Bit2,u8 Bit1);
Input parameter
Bit7_6: RFU
Bit5_4: DataRate
Bit3: ensure 312µs delay or wait for SOF
Bit2: modulation
Bit1: single or dual carrier
Output parameter
None
Return parameter
Parameter byte for ProtocolSelect command



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