/*!
    \file    readme.txt
    \brief   description of the master and slave simplex communication use dma demo

    \version 2025-08-08, V1.3.0, firmware for GD32E51x
*/

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*/

  This example is based on the GD32E517Z-EVAL-V1.0 board, it shows SPI0 and SPI2 simuplex 
communication use DMA mode.

1.Master tramsmit slave receive mode:
  Connect SPI0 SCK  PIN(PA5) TO SPI2 SCK  PIN(PC10).
  Connect SPI0 MOSI PIN(PA7) TO SPI2 MOSI PIN(PC12).
  Connect SPI0 NSS  PIN(PA3) TO SPI2 NSS PIN(PA4).

Modify file: examlple/SPI/SPI_master_slave_simplex_dma/main.c, choose master tramsmit
slave receive mode.
#define MASTER_TRAMSMIT_SLVAE_RECEIVE
//#define SLVAE_TRAMSMIT_MASTER_RECEIVE

After the communicate is complete,if receive data is equal to send data,led2 turn on,
if not led2 turn off.

2.Slave tramsmit master receive mode:
  Connect SPI0 SCK  PIN(PA5) TO SPI2 SCK  PIN(PC10).
  Connect SPI0 MISO PIN(PA6) TO SPI2 MISO PIN(PC11).
  Connect SPI0 NSS  PIN(PA3) TO SPI2 NSS PIN(PA4).

Modify file: examlple/SPI/SPI_master_slave_simplex_dma/main.c, choose slave tramsmit
master receive mode.
//#define MASTER_TRAMSMIT_SLVAE_RECEIVE
#define SLVAE_TRAMSMIT_MASTER_RECEIVE

After the communicate is complete,if receive data is equal to send data,led3 turn on,
if not led3 turn off.

