AN3108 datasheet(30/44 Pages) STMICROELECTRONICS

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STLM75 library firmware

AN3108

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Doc ID 16793 Rev 1

4.2

HAL Layer firmware overview

This section describes the hardware abstraction layer function used by the upper API layer

described in the previous section. All the library microcontroller hardware dependent

functions and related defined types are described in this section. See Figure 2.

The final application should NEVER directly use these HAL functions, and it should manage

the STLM75 temperature sensor through the API layer functions as described above.

4.2.1

HAL types

Standard types redefinition

/* Standard type redefinition in order

to maintain code portability */

typedef signed long

TS_s32;

typedef signed short

TS_s16;

typedef signed char

TS_s8;

typedef unsigned long

TS_u32;

typedef unsigned short

TS_u16;

typedef unsigned char

TS_u8;

STM32 library types redefinition

/* Redefine micro specific types */

typedef GPIO_TypeDef*

TS_PortType;

typedef GPIOMode_TypeDef

TS_ModeType;

typedef u32

TS_PinType;

typedef I2C_TypeDef*

TS_I2CType;

TS_SignalActionType type

/* Signal state enumeration */

typedef enum

{ TS_SIGNAL_LOW

= Bit_RESET,

TS_SIGNAL_HIGH

= Bit_SET

} TS_SignalActionType;

TS_StateType type

/* State type

typedef enum

{

TS_DISABLE = DISABLE,

TS_ENABLE

= ENABLE

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