AN3985 datasheet(56/105 Pages) STMICROELECTRONICS

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ISO/IEC 15693 layer

AN3985

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Doc ID 022255 Rev 2

ISO15693_Get_Size_of_Block_using_MemSize function

This functions returns the size of a block using the MemSize field of the tag structure. A get

system info command should have been performed before calling this function.

ISO15693_Get_MemSize_kbits function

This function returns the memory size of the tag in kbits.

ISO15693_Get_MemSize_bits function

This function returns the memory size of the contactless tag in bits. This function should be

called if the size of the memory is not an integer number of kbits.

Table 95.

ISO15693_Get_Size_of_Block_using_MemSize function description

Prototype

u8 ISO15693_Get_Size_of_Block_using_MemSize(const

ISO15693_Tag* MyTag);

Input parameter

MyTag: the structure containing the data describing the contactless tag

Output parameter

None

Return parameter

Size_of_Block: the number of bytes composing the block

ISO15693_BLOCK_SIZE_ERROR: Memsize contains no valid value, 0 is

returned.

Table 96.

ISO15693_Get_MemSize_kbits function

Prototype

u8 ISO15693_Get_MemSize_kbits(u8* MemSize, u8 ICRef);

Input parameter

MemSize: pointer on the bytes describing the memory size

ICRef: ICRef to retrieve the number of bytes if necessary

Output parameter

None

Return parameter

size: the size of the memory in kbits

Table 97.

ISO15693_Get_MemSize_bits function description

Prototype

u32 ISO15693_Get_MemSize_bits(u8* MemSize);

Input parameter

MemSize: pointer on the bytes describing the memory size

Output parameter

None

Return parameter

size: the size of the memory in bits (max 1023 bits)

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