亲们：
做了半年的BLE开发，终于有了实质性进展。现在已经完成了cc2541发送字符串到手机。
那么，问题来了，手机只能发送数字给cc2541？我是手机通过CHAR1给cc2541发数，cc2541为从机模式，所以回调simpleProfileChangeCB(unit8 pram)对吧，那这个函数传入参数是unit8啊！说明只能传数值（0-255）。
我想手机传字符串给从机，怎么办？？不懂了，求各位大牛们提供个思路~~
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