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* Developers Docs editing * Logo underline removed The underline has been removed when hovering over the logo. * proofread docs * application -> app in several files --------- Co-authored-by: knrn64 <25254561+knrn64@users.noreply.github.com> Co-authored-by: あく <alleteam@gmail.com>
31 lines
1.5 KiB
Markdown
31 lines
1.5 KiB
Markdown
# Furi HAL Debugging {#furi_hal_debugging}
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Some Furi subsystems have additional debugging features that can be enabled by adding additional defines to firmware compilation.
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Usually, they are used for low level tracing and profiling or signal redirection/duplication.
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## FuriHalOs
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`--extra-define=FURI_HAL_OS_DEBUG` enables tick, tick suppression, idle and time flow.
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There are 3 signals that will be exposed to external GPIO pins:
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- `AWAKE` — `PA7` — High when system is busy with computations, low when sleeping. Can be used to track transitions to sleep mode.
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- `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.
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- `SECOND` — `PA4` — Flipped each second. Can be used for tracing RT issue: time flow disturbance means system doesn't conform Hard RT.
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## FuriHalPower
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`--extra-define=FURI_HAL_POWER_DEBUG` enables power subsystem mode transitions tracing.
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There are 2 signals that will be exposed to external GPIO pins:
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- `WFI` — `PB2` — Light sleep (wait for interrupt) used. Basically, this is the lightest and most non-breaking things power save mode. All functions and debug should work correctly in this mode.
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- `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.
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## FuriHalSD
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`--extra-define=FURI_HAL_SD_SPI_DEBUG` enables SD card SPI bus logging.
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