wenkong_junshi/Examples/SPI/SPI_master_slave_fullduplex_polling/readme.txt

/*!
    \file    readme.txt
    \brief   description of the master and slave fullduplex communication use polling 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:

    1. Redistributions of source code must retain the above copyright notice, this 
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       this list of conditions and the following disclaimer in the documentation 
       and/or other materials provided with the distribution.
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       may be used to endorse or promote products derived from this software without 
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    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 
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*/

  This example is based on the GD32307C-EVAL-V1.1 board, it shows SPI0 and SPI2 fullduplex
communication use polling mode.After the communicate is complete,if receive data equal 
to send data, led2 and led3 turn on. If not, led2 and led3 turn off.

  1.Modify file: Examples/SPI/SPI_master_slave_fullduplex_polling/main.c, choose to disable
CRC function.
  #define SPI_CRC_ENABLE       0
  After the communication is completed, if the data received equal to the data sent, LED1
and LED2 turn on, and if not, LED3 and LED2 turn off.

  2.Modify file: Examples/SPI/SPI_master_slave_fullduplex_polling/main.c, choose to enable
CRC function.
  #define SPI_CRC_ENABLE       1
  After the communication is completed, if the CRC checking is passed, LED1 and LED2 turn
on, and if not, LED3 and LED2 turn off.

  Connect SPI0 NSS  PIN(PA3) to SPI2 NSS  PIN(PA4).
  Connect SPI0 SCK  PIN(PA5) to SPI2 SCK  PIN(PC10).
  Connect SPI0 MISO PIN(PA6) to SPI2 MISO PIN(PC11).
  Connect SPI0 MOSI PIN(PA7) to SPI2 MOSI PIN(PC12).