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CC2541 怎么实现矩阵按键 ?

Other Parts Discussed in Thread: CC2541

CC2541 怎么实现矩阵按键 ?

然后 用蓝牙输出到连接 的设备上 ?

求大神指点;

另外怎么 把 PIO的  设定为输出  ?

我尝试过  P0DIR 置为输出以后 ,

用 #define P0_0 0   这种格式去初始化 ,

但是还是输出不能为低 ;