Description: If you use the other 51 may slow the SCM little things, When using such fast ARM processor for massive data transmission may arise dropout phenomenon. MCU in a row to host the contracting process, Host will also not on a packet of data from the D12 Reading walk (D12 is in the buffer zone on the situation), MCU will write another package will get coverage before the swap. Hence each packet into a judgment must first D12 is not empty buffer
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