# Sleep 2.0 Question: SystemSleepResult or SleepResult
**URL:** https://community.particle.io/t/sleep-2-0-question-systemsleepresult-or-sleepresult/55676
**Category:** Firmware
**Created:** [April 14, 2020, 1:29pm UTC](https://community.particle.io/t/sleep-2-0-question-systemsleepresult-or-sleepresult/55676 "2020-04-14T13:29:53Z")
**Posts on this page:** 7
**Page:** 1
### Author:  [@chipmc](https://community.particle.io/u/chipmc)
#### Post date: [April 14, 2020, 1:29pm UTC](https://community.particle.io/t/sleep-2-0-question-systemsleepresult-or-sleepresult/55676/1 "2020-04-14T13:29:53Z")
I am struggling a bit with the documentation around Sleep 2.0 sleep results.
I see in the new Sleep API, there is a new result type called SystemSleepResult and there is an [example](https://docs.particle.io/reference/device-os/firmware/boron/#systemsleepconfiguration-mode-) in the new 1.5.0 section on sleep:
```auto
SystemSleepConfiguration config;
config.mode(SystemSleepMode::STOP)
.gpio(D2, RISING);
SystemSleepResult result = System.sleep(config);
```
But, there does not seem to be any documentation on the SystemSleepResult type in the documentation. There is [documentation on SleepResult](https://docs.particle.io/reference/device-os/firmware/boron/#sleepresult-) but this type has different options for the result codes.
So, which one should we be using going forward? And, if the answer is SystemSleepResult, where are some definitions of the responses and how to use them in the documentation? Am I missing something?
Thanks,
Chip
---
### Author:  [@no1089](https://community.particle.io/u/no1089)
#### Post date: [April 14, 2020, 1:59pm UTC](https://community.particle.io/t/sleep-2-0-question-systemsleepresult-or-sleepresult/55676/2 "2020-04-14T13:59:34Z")
I’m guessing @rickkas7 would know best 🙂
---
### Author:  [@armor](https://community.particle.io/u/armor)
#### Post date: [April 14, 2020, 3:10pm UTC](https://community.particle.io/t/sleep-2-0-question-systemsleepresult-or-sleepresult/55676/3 "2020-04-14T15:10:33Z")
I would hazard a guess
SystemSleepResult result = System.sleep(config); then
if (result.wakeupReason() == WAKEUP\_REASON\_RTC) { setLowPowerMode(“0”);}
Workbench should allow you to drill into the definitions? Surely more accurate than documentation!
---
### Author:  [@rickkas7](https://community.particle.io/u/rickkas7)
#### Post date: [April 14, 2020, 3:17pm UTC](https://community.particle.io/t/sleep-2-0-question-systemsleepresult-or-sleepresult/55676/4 "2020-04-14T15:17:26Z")
You should use `SystemSleepResult` as it’s a superset of the older `SleepResult` class. It’s also now documented:
[https://docs.particle.io/reference/device-os/firmware/#systemsleepresult-class](https://docs.particle.io/reference/device-os/firmware/#systemsleepresult-class)
---
### Author:  [@armor](https://community.particle.io/u/armor)
#### Post date: [April 14, 2020, 3:22pm UTC](https://community.particle.io/t/sleep-2-0-question-systemsleepresult-or-sleepresult/55676/5 "2020-04-14T15:22:52Z")
Is there a reason for the enumerator to be in this class SystemSleepWakeupReason::BY\_GPIO rather than as before WAKEUP\_REASON\_PIN?
---
### Author:  [@rickkas7](https://community.particle.io/u/rickkas7)
#### Post date: [April 14, 2020, 3:32pm UTC](https://community.particle.io/t/sleep-2-0-question-systemsleepresult-or-sleepresult/55676/6 "2020-04-14T15:32:25Z")
Newer definitions are in an `enum class` like:
```auto
enum class SystemSleepWakeupReason: uint16_t {
UNKNOWN = HAL_WAKEUP_SOURCE_TYPE_UNKNOWN,
BY_GPIO = HAL_WAKEUP_SOURCE_TYPE_GPIO,
BY_ADC = HAL_WAKEUP_SOURCE_TYPE_ADC,
```
The reason is that otherwise `BY_GPIO` would be reserved across all enumerations, not just this one. By using an `enum class` we reduce the number of globally scoped names.
It’s more verbose, but has the advantage of also making it easy to see all of the possible values for `SystemSleepWakeupReason` by auto-completion.
```cpp
SystemSleepConfiguration config;
config.mode(SystemSleepMode::STOP)
.gpio(D2, FALLING)
.duration(30s);
SystemSleepResult result = System.sleep(config);
if (result.wakeupReason() == SystemSleepWakeupReason::BY_GPIO) {
// Waken by pin
pin_t whichPin = result.wakeupPin();
}
```
---
### Author:  [@system](https://community.particle.io/u/system)
#### Post date: [October 14, 2020, 3:32am UTC](https://community.particle.io/t/sleep-2-0-question-systemsleepresult-or-sleepresult/55676/7 "2020-10-14T03:32:27Z")
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