nfc_platform_buffer_alloc()

uint8_t * nfc_platform_buffer_alloc

(

size_t

size

)

#include <nfc/include/nfc_platform.h>

Allocate buffer for NFC data exchange.

This function allocates a buffer that is used directly by the NFCT peripheral. You might need to allocate buffer within defined memory addresses that are accessible by the EasyDMA NFCT peripheral utility. Refer to the product specification for more details.

The buffer size varies for different NFC tag types:

• NFC Type 2 Tag: 16 bytes NFC_PLATFORM_T2T_BUFFER_SIZE
• NFC Type 4 Tag: 2*259 bytes NFC_PLATFORM_T4T_BUFFER_SIZE

The allocated buffer for NFC Type 4 Tag has separate areas for TX (transmit) and RX (receive) data. Therefore, the required size is doubled.

Parameters

[in]

size

Size of the requested buffer in bytes.

Return values

Address

of allocated buffer if successful, otherwise NULL.