Other Parts Discussed in Thread: CC2530, TIMAC, Z-STACK
在hal_timer.c中文件是空的，没有函数的定义，在hal_timer.h中只有一些函数的声明，.c文件中还有这样一段话
NOTE: Z-Stack and TIMAC no longer use CC2530 Timer 1, Timer 3, and
Timer 4. The supporting timer driver module is removed and left
for the users to implement their own application timer
functions.
是需要用户自己添加吗？
