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TMS320F280049: 485如何让片选自动控制

Part Number: TMS320F280049

现在很多MCU都支持RS485的自动片选信号输出了,TI的DSP如何实现自动485片选输出呢;

因为我不得不在程序里delay,判断发送完毕,再拉片选,有没有什么好的办法实现RS485的自动控制呢。