Other Parts Discussed in Thread: CC2430, CC2530
XOSC_STB定义如下:
/* SLEEPSTA bit definitions */
#define XOSC_STB BV(6) /* XOSC: powered, stable=1 */
而寄存器SLEEPSTA的描述是这样的:
也就是说第六位是保留的,为什么要用这一位来判定时钟是否稳定呢?
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其实TI 2540/2541指南里没说清楚,详见http://jingyan.baidu.com/album/e3c78d646084893c4d85f553.html