AN664 View Datasheet(PDF) - Silicon Laboratories

Part Name

Description

Manufacturer

AN664

PRECISION32™ CMSIS AND HAL USER’S GUIDE

Silicon Laboratories 

AN664

2.1.3. Modules

A module structure at the end of each *_Registers.h file aggregates all of the peripherals’s registers and spaces

them from the peripheral base pointer address:

typedef struct SI32_Peripheral_R_Struct

{

struct SI32_PERIPHERAL_R_REGNAME1_Struct

Register1;

uint32

Register1_SET;

uint32

Register1_CLR;

uint32_t

reserved0;

struct SI32_Peripheral_R_Register2_Struct

Register2;

uint32_t

reserved1;

uint32_t

reserved2;

uint32_t

reserved3;

} SI32_Peripheral_R_Type;

The struct is assumed to start at offset 0x0 from the peripheral’s base pointer. In this example, Register1 is at

address 0x0 and supports clear and set addresses, so Register1_SET is located at 0x04 and Register1_CLR is

located at 0x08. There is no mask address defined for this register, so the corresponding address 0x0C is simply

marked as reserved#. Register2 has no set, clear, or mask addresses, so these offsets are also defined as

reserved#.

This struct is never allocated as a variable; it is simply used as offsets from a base pointer.

10

Rev. 0.2

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