The code is based on the application note https://www.nxp.com.cn/docs/en/application-note/AN12657.pdf.
It mostly shows how to communicate between LPC1769 and RC663 via SPI based on board CLEV6630B without library and which Register have to be set to send a REQA (NTAG21x).
Dear Mr
Pls help me give the REQB cmd for this Chip, Thanks!!!