CMSIS-Pack: /package/taxonomy element

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/package/taxonomy element

Group to list description elements that define component classes and component group names used within a package description. This element is optional.

Example:

<package>
...
<taxonomy>
...
</taxonomy>
...
</package>

Parent Element | Element Chain
--- | ---
package | /package
Child Elements | Description | Type | Occurrence
description | Describes or defines a component class or class-group combination. | TaxonomyDescriptionType | 1..*

# /package/taxonomy/description

This element describes a component class or the combination between a component class and a component group. Components are categorized by Cclass and Cgroup. The creator of a package can define names for Cclass and Cgroup. Thus, configuration tools can display the set of available components. A document can be referenced using the attribute doc. The attribute generator can be used to reference to a generator tool. The id of the generator needs to be the same as specified in the element /package/generators/generator. The description itself is a string entered between the opening and closing tags of the element description.

It is recommended to use an already agreed taxonomy for interchangeable components. For example, the combination of class CMSIS and group Startup is defined for the device-specific CMSIS-CORE files.

Example:

<taxonomy>
<description Cclass="Board Support">Generic Interfaces for Evaluation and Development Boards</description>
<description Cclass="CMSIS" doc="CMSIS/Documentation/General/html/index.html">Cortex Microcontroller Software Interface Components</description>
<description Cclass="Device" doc="CMSIS/Documentation/Core/html/index.html">Startup, System Setup</description>
<description Cclass="CMSIS Driver" doc="CMSIS/Documentation/Driver/html/index.html">Unified Device Drivers compliant to CMSIS-Driver Specifications</description>
<description Cclass="File System">File Drive Support and File System</description>
<description Cclass="Graphics">Graphical User Interface</description>
<description Cclass="Network">Network Stack using Internet Protocols</description>
<description Cclass="USB">Universal Serial Bus Stack</description>
</taxonomy>

Note
  You must not use Windows or Linux reserved characters for Cclass, Cgrouop, and Csub names! Some development tools use these names to create a directory structure for the software components in projects. Reserved characters are:

      < (less than)
      > (greater than)
      : (colon)
      " (double quote)
      / (forward slash)
      \ (backslash)
      | (vertical bar or pipe)
      ? (question mark)
      * (asterisk)

Parent Element | Element Chain
--- | ---
taxonomy | /package/taxonomy element
Attributes | Description | Type | Use
Cclass | Component Class Name. Can be defined by the creator of the package. Predefined values can be used as listed in the table Component Classes. | Cclass | required
Cgroup | Component Group Name. Can be defined by the creator of the package. Predefined values can be used as listed in the table Component Groups. | CgroupType | optional
doc | Reference to documentation. | xs:string | optional
generator | Reference to a generator. Enter the id value of the element /package/generators/generator. | xs:string | optional

Table: Component Classes

Component Class names are strings with a minimum length of 3 characters and a maximum length of 32 characters. Component class names are specified in the section /package/taxonomy/description.

These values can be used in the elements:

- /package/conditions/condition/accept
- /package/conditions/condition/require
- /package/conditions/condition/deny
- /package/examples/example/attributes/component
- /package/components/.../component
- /package/components/bundle
- /package/apis/api
- /package/taxonomy/description

Example:

<... Cclass="CMSIS" ...>

The table lists predefined Component Classes.

Cclass= | Description
--- | ---
Board Support | Components providing interfaces for Evaluation and Development Boards
CMSIS | Components defined by Cortex Microcontroller Software Interface Standard (e.g. CMSIS-CORE, CMSIS-DSP and CMSIS-RTOS)
Device | Components containing device specific implementations of non-standard APIs (e.g. HAL drivers, CMSIS Startup files)
CMSIS Driver | Components implementing unified device drivers compliant to CMSIS-Driver (e.g. UART, SPI, USB, etc.)
File System | Components implementing some kind of File Systems (e.g. Flash or RAM based file systems)
Graphics | Components implementing some kind of Display and Graphics Software
Network | Components implementing some kind of Network Communications (e.g. TCP/IP Stack)
USB | Components implementing some kind of USB interfaces (e.g. Host and Device interfaces)

Table: Component Groups

Component Group names are specified by the element Cgroup and create categories within a Component Class specified by the element Cclass. The creator of the PACK can define the names in the element /package/taxonomy/description. A Component Group name is string with a length between 3 and 32 characters.

Example:

<... Cgroup="RTOS" Cclass="CMSIS"...>

Component Groups can be used in the elements:

- /package/conditions/condition/accept
- /package/conditions/condition/require
- /package/conditions/condition/deny
- /package/examples/example/attributes/component
- /package/components/.../component
- /package/apis/api
- /package/taxonomy/description

The table lists predefined values for the Component Class Cclass="CMSIS". No other Component Groups have been defined so far.

Cgroup= | Description
--- | ---
CORE | A component containing device support in accordance to the CMSIS-CORE specification (startup, system and device files)
DSP | A component implementing the CMSIS-DSP API specification.
RTOS | A component implementing the CMSIS-RTOS API specification.