AN3985 datasheet(72/105 Pages) STMICROELECTRONICS

72 / 105 page

M24LRxx layer

AN3985

72/105

Doc ID 022255 Rev 2

M24LRxx_Get_Multiple_Blocks_Security_Status function

This function sends, through the CR95HF, a get multiple blocks security status command to

a contactless tag in the field.

Note:

Received data is stored into the internal EEPROM of the MCU.

M24LRxx_Write_Sector_Password function

This function sends, through the CR95HF, a write sector password command to a

contactless tag in the field.

Table 120.

M24LRxx_Get_Multiple_Blocks_Security_Status function description

Prototype

M24LRxx_Get_Multiple_Blocks_Security_Status(ISO15693_Tag*

MyTag, const u8 Request_flags, const u8* Tag_UID, const u16

First_Block_number, const u8 Number_of_Blocks);

Input parameter

Request_flags: specifies the actions to be performed by the contactless tag and

whether corresponding fields are present or not. (1) (2)

Tag_UID: pointer on the UID (optional)

block_number: address of the block to read (3)

Number_of_Blocks: number of blocks to read after the first one

The Address flag indicates if Tag_UID field will be added to the command (addressed mode).

If the memory size is more than 8 kbit, the protocol extension flag of request flags should be set.

If the memory size is more than 8 kbit, the block number is composed by two bytes.

Output parameter

MyTag: pointer on the structure that contains the tag response

Return parameter

M24LRxx_ERROR_CODE: The command failed.

M24LRxx_ERROR_PARAMETERS_REQUEST_FLAGS: The inventory flag is

set.

M24LRxx_SUCCESS_CODE: The tag answered the command.

Table 121.

M24LRxx_Write_Sector_Password function description

Prototype

u8 M24LRxx_Write_Sector_Password(ISO15693_Tag* MyTag, const

u8 Request_flags, const u8* Tag_UID,const u8

Password_Number ,const u8* Password);

Input parameter

Request_flags: specifies the actions to be performed by the contactless tag and

whether corresponding fields are present or not. (1)

Tag_UID: pointer on the UID (optional)

Password_Number: number identifying the password (between 1 and 3)

Password: password to write

The Address flag indicates if Tag_UID field will be added to the command (addressed mode).

Output parameter

MyTag: pointer on the structure that contains the tag response

Return parameter

M24LRxx_ERROR_CODE: The command failed.

M24LRxx_ERROR_PARAMETERS_REQUEST_FLAGS: The inventory flag is

set.

M24LRxx_SUCCESS_CODE: The tag answered the command.

AN3985 Datasheet(PDF) 72 Page - STMicroelectronics

AN3985 Datasheet(HTML) 72 Page - STMicroelectronics

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL