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TI CC2540 UART如何实现在程序里面关闭



如题,如何关闭UART实现低功耗。在UART的实验里,需要在预处理设置HAL_UART=TRUE,同时设置XPower_saving.这样一设置后串口将一直打开,电流8mA。

而现在我想通过按键关掉串口,如何编码实现?(关掉串口,必须保证电流降至广告模式下,即uA级别)。