AN3985 datasheet(21/105 Pages) STMICROELECTRONICS

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AN3985

CR95HF low level layer

Doc ID 022255 Rev 2

21/105

CR95HF_Rd_Analog_Register_Config_B function

This function reads the analog register configuration B of the CR95HF to check the analog

configuration Register containing the modulation depth and reader chain gain.

Note:

A CR95HF_Set_Analog_Register_Config_B_Index command must be issued before

reading the register.

CR95HF_Baud_Rate function

This function sends a BaudRate command to the CR95HF. It allows to configure the UART

baudrate.

Table 21.

CR95HF_Rd_Analog_Register_Config_B function description

Prototype

u8 CR95HF_Rd_Wake_up_Reg(CR95HF_ResponseReceiving*

Response,CR95HF_Idle_Config* Idle_Config);

Input parameter

None

Output parameter

Response: pointer on the structure to fill in with the data retrieved

Idle_Config: pointer on the structure to update

Return parameter

CR95HF_SUCCESS_CODE: The command is successful.

CR95HF_ERROR_INVALID_CMD_LENGTH: The command failed,

invalid length

CR95HF_ERROR_CODE: Unsuccessful command, Response

contains the error code.

Table 22.

CR95HF_Baud_Rate function description

Prototype

u8 CR95HF_Baud_Rate(u8 New_Baud_Rate);

Input parameter

New_Baud_Rate: new baud rate = 13.56/(2*BaudRate+2) Mbps

Output parameter

pResponse: pointer on the CR95HF response

Return parameter

CR95HF_SUCCESS_CODE: The command is successful.

CR95HF_ERROR_CODE: Unsuccessful command, UART

communication may be lost.

AN3985 Datasheet(PDF) 21 Page - STMicroelectronics