您好!
1 .CC2540设成从机,一上电就进入了PM2模式,在PM2模式下主机能和CC2540从机连接上吗?
2 .如果进入睡眠前没有连接,是否从机依据睡眠定时器间隙性的在发送广播?
3.CC2540进入睡眠后设置成io唤醒,从唤醒到串口正式可以接收数据的时间是否需要2mS还是大于3mS
4.在睡眠模式下如果主机主动断开连接,再次连接的时间是否也是2ms左右
多谢!
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1. 不能,需要退出pm2模式到正常工作模式。
3. 3mS左右吧,等待外部晶振稳定工作。
* Wake up from powermode
* After waking up, the system clock source is HS RCOSC, but since
* the system clock source was HS XOSC before entering PM1, the CC254x
* will automatically switch the system clock source over to HS XOSC
* when it becomes ready. We therefore only need to poll until this
* system clock source has indeed changed to HS XOSC.
*/
while(CLKCONSTA & CLKCON_OSC);
// Program is now in Active Mode.