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docs: bidirectional dshot

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Jacob Dahl
2025-05-22 21:38:00 -08:00
committed by Hamish Willee
parent afbaa71bfc
commit 3d5cb891a6
1 changed files with 18 additions and 1 deletions
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docs/en/peripherals/dshot.md
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@@ -36,7 +36,7 @@ Remove propellers before changing ESC configuration parameters!
Enable DShot for your required outputs in the [Actuator Configuration](../config/actuators.md). Enable DShot for your required outputs in the [Actuator Configuration](../config/actuators.md).
DShot comes with different speed options: _DShot150_, _DShot300_, _DShot600_ and _DShot1200_, where the number indicates the speed in kilo-bits/second. DShot comes with different speed options: _DShot150_, _DShot300_, and _DShot600_ where the number indicates the speed in kilo-bits/second.
You should set the parameter to the highest speed supported by your ESC (according to its datasheet). You should set the parameter to the highest speed supported by your ESC (according to its datasheet).
Then connect the battery and arm the vehicle. Then connect the battery and arm the vehicle.
@@ -147,3 +147,20 @@ ERROR [dshot] No data received. If telemetry is setup correctly, try again.
Check manufacturer documentation for confirmation/details. Check manufacturer documentation for confirmation/details.
::: :::
## Bidirectional DShot
Bidirectional DShot enables ESC RPM (eRPM) data collection from each ESC at high frequencies. This enhanced telemetry significantly improves the performance of [Dynamic Notch Filters](../config_mc/filter_tuning.md#dynamic-notch-filters) and enables more precise vehicle tuning.
### Configuration
To enable bidirectional DShot, set the [DSHOT_BIDIR_EN](../advanced_config/parameter_reference.md#DSHOT_BIDIR_EN) parameter.
:::info
The system calculates actual motor RPM from the received eRPM data using the [MOT_POLE_COUNT](../advanced_config/parameter_reference.md#MOT_POLE_COUNT) parameter. This parameter must be set correctly for accurate RPM reporting.
:::info
:::warning
Bidirectional DShot is currently supported on H7 targets only, with support limited to 4 motor outputs.
:::