wenkong_junshi/Examples/I2C/Fast_mode_ plus_communication

/*!
\file readme.txt
\brief description of the master receiver and slave transmitter in fast mode plus

\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
*/

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This demo is based on the GD32307C-EVAL-V1.1 board, it shows the I2C programming mode in
master receiving mode and slave transmitting mode. In this demo, I2C0 is operated as
master receiver, I2C1 is operated as slave and the SCL line and SDA line of I2C interface
are controled by the I/O pin PB10 and PB11(or PB6 and PB7) respectively.

This demo shows the receiving data process of the master and the sending data process
of the slave. If transfer is sucessfully completed, LED2 and LED3 are on.

We shoud use the jumper to connect the PB6 and PB10. The PB7 and PB11 are connected as well.