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Revert "Revert Deep Sleep due to BLE issues and other random freezes"

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This reverts commit addf909287.
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MX
2023-04-14 14:45:23 +03:00
parent d1df16a2bf
commit a304e9c3fa
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documentation/FuriHalDebuging.md
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# Furi HAL Debugging
Some Furi subsystem got additional debugging features that can be enabled by adding additional defines to firmware compilation.
Usually they are used for low level tracing and profiling or signal redirection/duplication.
## FuriHalOs
`--extra-define=FURI_HAL_OS_DEBUG` enables tick, tick suppression, idle and time flow.
There are 3 signals that will be exposed to external GPIO pins:
- `AWAKE` - `PA7` - High when system is busy with computations, low when sleeping. Can be used to track transitions to sleep mode.
- `TICK` - `PA6` - Flipped on system tick, only flips when no tick suppression in progress. Can be used to track tick skew and abnormal task scheduling.
- `SECOND` - `PA4` - Flipped each second. Can be used for tracing RT issue: time flow disturbance means system doesn't conforms Hard RT.
## FuriHalPower
`--extra-define=FURI_HAL_POWER_DEBUG` enables power subsystem mode transitions tracing.
There are 2 signals that will be exposed to external GPIO pins:
- `WFI` - `PB2` - Light sleep (wait for interrupt) used. Basically this is lightest and most non-breaking things power save mode. All function and debug should work correctly in this mode.
- `STOP` - `PC3` - STOP mode used. Platform deep sleep mode. Extremely fragile mode where most of the silicon is disabled or in unusable state. Debugging MCU in this mode is nearly impossible.