winget install --id=Microsoft.HIDTools.Waratah -e Waratah is a HID descriptor composition tool designed to simplify the creation and optimization of Human Interface Device (HID) report descriptors. It abstracts complex details of the HID specification, enabling developers to focus on designing device input/output without manual error-prone tasks.
Key Features:
Audience & Benefit:
Ideal for device firmware engineers and hardware developers, Waratah accelerates product development by reducing the complexity of HID descriptor creation. It minimizes errors, optimizes code efficiency, and integrates seamlessly into existing workflows. With Waratah, developers can focus on innovation while ensuring their devices meet HID specifications.
Waratah can be installed via winget, making it easy to incorporate into your development environment.
This repo is the central location of Microsoft HID Tools. Currently, the only tool available is Waratah.
The underlying HidSpecification and HidEngine libraries are available via Nuget:
https://www.nuget.org/packages/Microsoft.HidTools.HidSpecification
https://www.nuget.org/packages/Microsoft.HidTools.HidEngine
Or from the package manager console:
> Install-Package Microsoft.HidTools.HidEngine -Version 1.5.0
A singular compiled Waratah package is available from this repo's Releases pages (Specifically its Waratah-Published.zip files).
Or from the Winget console:
> winget install Microsoft.HIDTools.Waratah
> waratahcmd --source Z:\foo.wara
> What A Really Awesome Tool for Authoring HIDs
Waratah is a HID descriptor composition tool. It offers a high-level of abstraction, eliminates common errors (by design), and optimizes the descriptor to reduce byte size. It implements the HID 1.11 specification so developers don't have to.
It is expected to be used by device firmware authors during device bring-up.
See Wiki for more details
Waratah uses a TOML-like hierarchical language of sections and keys to represent a HID Report Descriptor (Note: There is currently no support for HID Physical Descriptors). This can then be compiled to to either a simple plain-text format, or a C++ header file suitable for ingestion into device firmware.
> Waratah is NOT a direct dt.exe replacement. dt.exe permits the use of specialized items (e.g. Push/Pop) and non-optimal practices (e.g. ReportSize larger than LogicalMinimum/Maximum). There are also known bugs in dt.exe, that have not been replicated in Waratah. It is reasonable to think of Waratah as high-level compiler like C and dt.exe as an assembler. No further development of dt.exe is planned.
[[applicationCollection]]
usage = ['Generic Desktop', 'Mouse']
[[applicationCollection.inputReport]]
[[applicationCollection.inputReport.physicalCollection]]
usage = ['Generic Desktop', 'Pointer']
[[applicationCollection.inputReport.physicalCollection.variableItem]]
usage = ['Generic Desktop', 'X']
sizeInBits = 8
logicalValueRange = 'maxSignedSizeRange'
reportFlags = ['relative']
[[applicationCollection.inputReport.physicalCollection.variableItem]]
usage = ['Generic Desktop', 'Y']
sizeInBits = 8
logicalValueRange = 'maxSignedSizeRange'
reportFlags = ['relative']
[[applicationCollection.inputReport.physicalCollection.variableItem]]
usageRange = ['Button', 'Button 1', 'Button 3']
logicalValueRange = [0, 1]
05-01....UsagePage(Generic Desktop[1])
09-02....UsageId(Mouse[2])
A1-01....Collection(Application)
85-01........ReportId(1)
09-01........UsageId(Pointer[1])
A1-00........Collection(Physical)
09-30............UsageId(X[48])
09-31............UsageId(Y[49])
15-80............LogicalMinimum(-128)
25-7F............LogicalMaximum(127)
95-02............ReportCount(2)
75-08............ReportSize(8)
81-06............Input(Data, Variable, Relative, NoWrap, Linear, PreferredState, NoNullPosition, BitField)
05-09............UsagePage(Button[9])
19-01............UsageIdMin(Button 1[1])
29-03............UsageIdMax(Button 3[3])
15-00............LogicalMinimum(0)
25-01............LogicalMaximum(1)
95-03............ReportCount(3)
75-01............ReportSize(1)
81-02............Input(Data, Variable, Absolute, NoWrap, Linear, PreferredState, NoNullPosition, BitField)
C0...........EndCollection()
95-01........ReportCount(1)
75-05........ReportSize(5)
81-03........Input(Constant, Variable, Absolute, NoWrap, Linear, PreferredState, NoNullPosition, BitField)
C0.......EndCollection()
// AUTO-GENERATED by WaratahCmd.exe
#include
// HID Usage Tables: 1.3.0
// Descriptor size: 50 (bytes)
// +----------+-------+------------------+
// | ReportId | Kind | ReportSizeInBits |
// +----------+-------+------------------+
// | 1 | Input | 24 |
// +----------+-------+------------------+
static const uint8_t hidReportDescriptor [] =
{
0x05, 0x01, // UsagePage(Generic Desktop[1])
0x09, 0x02, // UsageId(Mouse[2])
0xA1, 0x01, // Collection(Application)
0x85, 0x01, // ReportId(1)
0x09, 0x01, // UsageId(Pointer[1])
0xA1, 0x00, // Collection(Physical)
0x09, 0x30, // UsageId(X[48])
0x09, 0x31, // UsageId(Y[49])
0x15, 0x80, // LogicalMinimum(-128)
0x25, 0x7F, // LogicalMaximum(127)
0x95, 0x02, // ReportCount(2)
0x75, 0x08, // ReportSize(8)
0x81, 0x06, // Input(Data, Variable, Relative, NoWrap, Linear, PreferredState, NoNullPosition, BitField)
0x05, 0x09, // UsagePage(Button[9])
0x19, 0x01, // UsageIdMin(Button 1[1])
0x29, 0x03, // UsageIdMax(Button 3[3])
0x15, 0x00, // LogicalMinimum(0)
0x25, 0x01, // LogicalMaximum(1)
0x95, 0x03, // ReportCount(3)
0x75, 0x01, // ReportSize(1)
0x81, 0x02, // Input(Data, Variable, Absolute, NoWrap, Linear, PreferredState, NoNullPosition, BitField)
0xC0, // EndCollection()
0x95, 0x01, // ReportCount(1)
0x75, 0x05, // ReportSize(5)
0x81, 0x03, // Input(Constant, Variable, Absolute, NoWrap, Linear, PreferredState, NoNullPosition, BitField)
0xC0, // EndCollection()
};
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