/**
  ******************************************************************************
  * 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 WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *
  * Copyright (C) 2023 Shanghai Eastsoft Microelectronics Co., Ltd. ALL rights reserved.
  *******************************************************************************
  */

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Version history:
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2022-12-27	V1.0.0	AE TEAM

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Demo introduction:
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本示例功能：I2C主机收发，中断方式。

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测试环境:
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测试用板；
ES-PDS-ES32VF2264

辅助工具：
多功能接口转换工具ES-Bridge

辅助软件：
ES-Bridge上位机软件

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测试步骤：
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1) 编译工程，编译通过后将程序下载到目标芯片；
2) 将程序配置的SCL/SDA对应的引脚分别连接ES-Bridge的SCL/SDA；
3) ES-Bridge通过USB线缆连接PC，打开上位机软件，“设备操作”选项里选择“打开”；
4) 上位机切换到I2C标签页，按照程序配置参数（从机模式-7bit地址模式-任意时钟频率-0x2D从机地址），点击打开；
5) 在写数据对话框输入20字节HEX数据，读字节数设置为20，点击“同步数据”；
6) 在线调试，将g_recv_buf加入监视窗；
7) 运行程序，MCU的I2C主机读取ES-Bridge的数据存入g_recv_buf，
MCU的I2C主机再把g_recv_buf的数据写入ES-Bridge，并显示在上位机软件上。

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注意：
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1) 测试板与ES-Bridge需共GND。

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System clock:
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PLL 48MHz

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Pin connection: 
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SCL ---- PB2[GPIO_FUNC_5]
SDA ---- PB3[GPIO_FUNC_5]