/**
  ******************************************************************************
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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Version history:
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2021-3-16	V1.00	AE TEAM
2022-7-27	V1.01	AE TEAM
1.适配ES-PDS-ES32F3696LX开发板

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Demo introduction:
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本示例功能：I2C主机方式与eeprom芯片通信，读写数据，通过UART打印读写结果。

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测试环境:
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测试用板：
ES-PDS-ES32F3696LX-V1.0，ES-PDS-E2+FLASH-V2.1

辅助软件：
串口调试助手

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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ES-PDS-E2+FLASH模块插入ES-PDS的E口；
3) 打开串口调试助手，按照程序配置参数（波特率115200-1位停止位-8位数据位-无奇偶校验-正常模式），打开串口；
5) 复位芯片，或在线调试，运行程序，串口调试助手接收框打印读写结果。

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注意：
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1) ES-PDS-ES32F3696LX-V1.0包含ES-LinkII-OB，ES-LinkII-OB支持虚拟串口功能；
2) keil工程请勿勾选“GNU extensions”。

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System clock:
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External HOSC[12MHz] divided by 3, then PLL to 72MHz.

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Pin connection: 
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I2C0_SCL ---- PB6[GPIO_FUNC_4]
I2C0_SDA ---- PB7[GPIO_FUNC_4]
UART2_TX ---- PE2[GPIO_FUNC_3]
UART2_RX ---- PE3[GPIO_FUNC_3]