wenkong_junshi/Examples/I2C/Master_receiver

/*!
\file readme.txt
\brief description of the master receiver

\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. In this demo,I2C0 is operated as master receiver,
and the SCL line and SDA line of I2C0 interface are controled by the I/O pin
PB6 and PB7 respectively.

This demo shows the receiving data process of the master. And it will store
the received data in the i2c_receiver array.

This demo doesn't perform the data transfer actually, which is due to no
specific slave.In the specific application, we must send the correct slave
address, and the master and the slave may need to be connected by the jumper
if necessary. When the macro I2C_10BIT_ADDRESS is 1, I2C communicate in 10 bit
addressing mode, otherwise, I2C communicate in 7 bit addressing mode.