AN664 Просмотр технического описания (PDF) - Silicon Laboratories

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AN664

PRECISION32™ CMSIS AND HAL USER’S GUIDE

Silicon Laboratories 

AN664

4. HAL Organization

The HAL is organized based on the SiM3xxxx peripheral modules. Modules of the same type and revision are

exactly the same, so these modules share the same generic description. The individual instances of the modules

then instantiate their own copies of the generic description. For example, the HAL implements a USART (module)

A (revision) type. This type is then instantiated multiple times for USART0 and USART1, which have their own

base pointers.

Each generic module has a *_Registers.h file that contains a module structure comprised of register structures and

bit fields properly aligned in memory. The *_Type.h file contains the HAL interface for the module, and the *_Type.c

contains the HAL implementation. Some modules will also have a *_Support.h file that contains helpful

enumeration definitions. Finally, a device header file named for the device (e.g., sim3u1xx.h) contains base pointer

and interrupt vector instantiations for each module on a device.

Figure 3 displays a block diagram showing the relationship of the HAL files.

sim3u1xx.h

Interrupt Vectors

Base Pointers

Module

Support.h

Enumerated Type

Definitions

Registers.h

Register and Bit

Definitions

Type.h

Function

Prototypes and

Macros

Figure 3. HAL Block Diagram

Type.c

Functions

Rev. 0.2

3

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