# Is deep sleep functionality something in the works? **URL:** \ **Category:** BLE // NFC\ **Created:** [February 22, 2019, 3:05am UTC](https://community.particle.io/t/is-deep-sleep-functionality-something-in-the-works/47946 "2019-02-22T03:05:48Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![LloydChristmas](https://sea2.discourse-cdn.com/flex026/user_avatar/community.particle.io/lloydchristmas/32/9635_2.png) [@LloydChristmas](https://community.particle.io/u/LloydChristmas)\ **Post date:** [February 22, 2019, 3:05am UTC](https://community.particle.io/t/is-deep-sleep-functionality-something-in-the-works/47946/1 "2019-02-22T03:05:48Z")
From what I’ve read deep sleep isn’t possible due to nRF52’s clock. The [datasheet](https://docs.particle.io/datasheets/wi-fi/argon-datasheet/#recommended-operating-conditions) however indicates that “Deep Sleep Current” is TBD. Is this something that will be possible in the future? Thanks ---
**Author:** ![ninjatill](https://sea2.discourse-cdn.com/flex026/user_avatar/community.particle.io/ninjatill/32/17370_2.png) [@ninjatill](https://community.particle.io/u/ninjatill)\ **Post date:** [February 22, 2019, 3:53am UTC](https://community.particle.io/t/is-deep-sleep-functionality-something-in-the-works/47946/2 "2019-02-22T03:53:50Z")
Deep sleep is possible and implemented. Look at the sleep docs [here](https://docs.particle.io/reference/device-os/firmware/boron/#sleep-sleep-). Look at paragraph 3 under the `System.sleep()` header. The only way to wake from deep sleep is by pin. You cannot wake after a set period due what you mention about nFR52’s clock not running in deep sleep. If you need to wake from the clock, then use Stop mode sleep (i.e. `System.sleep(D2,Rising,60)`) Preliminary testing I’ve seen shows the difference in current consumed by Stop mode sleep vs Standby (deep) sleep is approx 10uA. ---
**Author:** ![ScruffR](https://sea2.discourse-cdn.com/flex026/user_avatar/community.particle.io/scruffr/32/6952_2.png) [@ScruffR](https://community.particle.io/u/ScruffR)\ **Post date:** [February 22, 2019, 6:52am UTC](https://community.particle.io/t/is-deep-sleep-functionality-something-in-the-works/47946/3 "2019-02-22T06:52:47Z")
@LloydChristmas, if you want to keep up with the development of Gen3 you may want to consider susbcribing/tracking to this thread > [@\[Updated 3/21/19\] Gen 3 known issues](https://community.particle.io/t/updated-2-12-19-particle-mesh-known-issues-and-fixes/45722/22): > > Update - Device OS 0.9.0 for Gen3 devices BUGFIXES [Gen 3] Fixes system-dynalib incompatibility introduced in 0.9.0-rc.1, causing pre-0.9.0-rc.1 user applications that call certain system-dynalib functions to crash the device [#1692] [Gen 3] WKP pin is configured as pull-down with rising edge trigger when entering STANDBY sleep mode to keep feature parity with Gen 2 devices (#1691) [Boron] PPP thread stack size increased by 1K in order to resolve a very rare stack overflow (#1691) [Gen 3] Fixes… ---
**Author:** ![LloydChristmas](https://sea2.discourse-cdn.com/flex026/user_avatar/community.particle.io/lloydchristmas/32/9635_2.png) [@LloydChristmas](https://community.particle.io/u/LloydChristmas)\ **Post date:** [February 23, 2019, 11:35pm UTC](https://community.particle.io/t/is-deep-sleep-functionality-something-in-the-works/47946/4 "2019-02-23T23:35:46Z")
Thanks for the responses. I wonder if the Photon is a better choice for projects that need to wake every other hour and perform a task then sleep, since deep sleep can be executed on a timer. ---
**Author:** ![ScruffR](https://sea2.discourse-cdn.com/flex026/user_avatar/community.particle.io/scruffr/32/6952_2.png) [@ScruffR](https://community.particle.io/u/ScruffR)\ **Post date:** [February 23, 2019, 11:42pm UTC](https://community.particle.io/t/is-deep-sleep-functionality-something-in-the-works/47946/5 "2019-02-23T23:42:18Z")
You can use Stop Sleep on an Argon which will still use less current than the Photon in Deep Sleep - especially after some more tuning.