RE: 我想使用 WDT 準確一秒運算(節約電力使用)!

Jimmy Wong — Mon, 21 Aug 2017 01:22:03 GMT

首先，強烈建議請用英文發問。

I think you would like to use the WDT as the RTC in order to work as the system clock (date/time).

First, if you check on the PS of the nRF51 (as below), the WDT is required to use the LCLK (it is same as the RTC).

The difference of the WDT is only clear by ( POR Power on reset / BOR Burst out reset).

In the NRF5 series (power management), it has either system off or system on.

Here is the current consumption by using the RTC / 32KHz example.

Matt — Fri, 18 Aug 2017 13:34:57 GMT

You may want to translate your question to English in order to get more help/feedback from this forum.

I think the main purpose of the watchdog timer (WDT) is to reset the mcu when it expires and not to use it as a timer; I may be wrong here.

What issue did you run into with the 32kHz clock again? I believe lots of folks have done the 1-second timer thing here using the RTC.