/*!
    \file    readme.txt
    \brief   description of the EXMC_NAND demo

    \version 2017-02-10, V1.0.0, firmware for GD32F30x
    \version 2018-10-10, V1.1.0, firmware for GD32F30x
    \version 2018-12-25, V2.0.0, firmware for GD32F30x
    \version 2020-09-30, V2.1.0, firmware for GD32F30x
*/

/*
    Copyright (c) 2020, GigaDevice Semiconductor Inc.

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are permitted provided that the following conditions are met:

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*/

  This demo is based on the GD32307C-EVAL-V1.1 board, it shows how to use EXMC 
peripheral to control NAND memory. This board uses EXMC_BANK1_NAND to support 
NAND memory. 
  This demo shows the write and read data operation process of NAND memory by 
EXMC module. Firstly, read NAND_ID. If the operation fails, this demo will print
out the failure information and light on LED4, otherwise print out the ID information. 
Secondly, write and read the NAND memory. If the test result is correct, LED2 will be 
turned on and the data writed to the NAND will be printed out.
  D0,D1,P3(EXMC_D2),P2(EXMC_D3),D4-D7,nwait,A16(CLE),A17(ALE),NWAIT,NWE,NOE and
JP24(NAND_CS/NCE1) must be fitted.