sam3x8e with spi nand flash

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I am trying to integrate sam3x8e with winbond nand flash(w25n01) using spi protocol. I got the chip id from nand flash but  not able to store the values sent from controller in nand flash properly. I have attached the program below.  can someone tell me where I am going wrong. 

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Last Edited: Fri. Dec 18, 2020 - 04:32 PM
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How is the Write Protect ( /WP ) pin wired in your circuit?