hey Ozzy,
看起來目前Mbed OS這一方面的確是使用polling的方式。不知道如果再拉一條線做interrupt是不是可行的做法. 如果我有更好的答案，再和你說。
Neil
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正在使用 I2CSlave driver，總覺得跟 I2C driver比起來，I2CSlave 非常難用，沒中斷也沒DMA。 要一直在 while(1) loop 裡面等讀寫，loop裡事情不能做太久，否則Host會讀不到資料(目前試只要delay 1ms就讀不到了 )。 正在考慮要不要拿原廠driver，來直接porting 中斷模式 >_<"