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controlcard 最小系统板上的TX,RX可以进行I2C通讯吗？
Piccolo 上只有1个 IIC 模块，在control card 上已经将其连接到Docking Station的引脚上，可以连接此引脚到外部的IIC通信芯片上进行通信，但因只有1个IIC，无法进行芯片内部的Loop back试验。
