3min

Rumble Data Format

The rumble data is split up between left and right. This is for the splitting of Joy-Cons but also for Pro Controllers which have two linear resistance actuators (LRA) that can be controlled independently.
Rumble data layoutIndex array (based on real report)
Data
Description
2 - HF Low Range Mode
0x04 - 0xFC
Left side - Encoded High Frequency. 81.75Hz - 313.14Hz. 
Requires LSB of byte 3 to be cleared.
2 - HF High Range Mode
0x00 - 0xC8
Left side - Encoded High Frequency 320Hz - 1252.57Hz. 
Requires LSB of byte 3 to be set.
3
0x00 - 0xC8
Left side - High Frequency Amplitude. Increments of 0x0200.
4 - LF
0x01 - 0x7F
Left Side - Low Frequency. 40.87Hz - 626.28Hz.
5 - LF Amplitude Low Mode
0x40 - 0x72
Left Side - Encoded Low Frequency Amplitude.
Requires MSB of byte 4 to be cleared.
5 - LF Amplitude Intermediate Mode
0x40 - 0x71
Left Side - Encoded Low Frequency Intermediate Amplitude.
Requres MSB of byte 4 to be set.
Bytes 6-9 are repeated but for the Right controller/LRA.
Decoding rumble dataUnder construction
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Updated 03 Mar 2023

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TABLE OF CONTENTS

Rumble data layout

Decoding rumble data

Index array (based on real report)	Data	Description
2 - HF Low Range Mode	0x04 - 0xFC	Left side - Encoded High Frequency. 81.75Hz - 313.14Hz. Requires LSB of byte 3 to be cleared.
2 - HF High Range Mode	0x00 - 0xC8	Left side - Encoded High Frequency 320Hz - 1252.57Hz. Requires LSB of byte 3 to be set.
3	0x00 - 0xC8	Left side - High Frequency Amplitude. Increments of 0x0200.
4 - LF	0x01 - 0x7F	Left Side - Low Frequency. 40.87Hz - 626.28Hz.
5 - LF Amplitude Low Mode	0x40 - 0x72	Left Side - Encoded Low Frequency Amplitude. Requires MSB of byte 4 to be cleared.
5 - LF Amplitude Intermediate Mode	0x40 - 0x71	Left Side - Encoded Low Frequency Intermediate Amplitude. Requres MSB of byte 4 to be set.