i2c_transfer函数详解

i2c_transfer()函数用于进行i2c适配器和i2c设备之间的一组消息交互。该函数是i2c核心提供给设备驱动的发送方法，通过它发送的数据需要被打包成i2c_msg。这个函数最终会回调相应i2c_adapter->i2c_algorithm->master_xfer()接口将i2c_msg对象发送到i2c物理控制器进行实际的消息传输。i2c_transfer()函数本身并不具备驱动适配器物理硬件完成消息交互的能力，它只是寻找到i2c_adapter对应的i2c_algorithm，并使用i2c_algorithm的master_xfer()函数真正驱动硬件流程。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
#### 引用[.reference_title]
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