GATT通信,在取消省电模式的情况下,为什么取消外部低频晶振会导致手机连接不上(接上外部低频晶振手机就能连接上)?由于我的应用也不需要 低功耗,只要能通信就行,如果取消这个外部低频晶振呢?
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Bluetooth low energy requires a slow-speed clock with better than±500 ppm accuracy. 試試參考 https://www.ti.com/lit/an/swra499c/swra499c.pdf 去做internal RC low frequency oscillator的校正看看能不能连接上
CC2640R2F datasheet里面是这样说的:The 32-kHz crystal is optional. Bluetooth low energy requires a slow-speed clock with better than ±500 ppm accuracy if the device is to enter any sleep mode while maintaining a connection.
前提是如果器件需要进入任何睡眠模式,我不需要他进入睡眠模式,是不是有方法不需要这个低频信号?谢谢!
您好,
请问您是否遵循 BLE-Stack User's Guide中, Using 32-kHz Crystal-Less Mode的相关说明?该解决方案包括使用校准后的 RCOSC_LF,是用于更换外部 LF 晶振的最精确的解决方案,同时不考虑standby mode的注意事项。