TEMPDRV API implementation.

License

The licensor of this software is Silicon Laboratories Inc. Your use of this software is governed by the terms of Silicon Labs Master Software License Agreement (MSLA) available at www.silabs.com/about-us/legal/master-software-license-agreement. This software is distributed to you in Source Code format and is governed by the sections of the MSLA applicable to Source Code.

Definition in file tempdrv.c .


       #include "em_device.h"


       #include "
       
        em_system.h
       
       "


       #include "
       
        em_emu.h
       
       "


       #include "string.h"


       #include "
       
        tempdrv.h
       
       "

Data Structures
struct	TEMPDRV_CallbackSet_t

Macros
#define	DECREASING_TEMPERATURE_FLAG EMU_IF_TEMPHIGH

#define	ERRATA_HIGH_LIMIT 80

#define	ERRATA_HYSTERESIS 8

#define	ERRATA_MID_LIMIT 65

#define	INCREASING_TEMPERATURE_FLAG EMU_IF_TEMPLOW

#define	TEMPDRV_

#define	TEMPDRV_CALLBACK_DEPTH (TEMPDRV_INT_CALLBACK_DEPTH + TEMPDRV_CUSTOM_CALLBACK_DEPTH)

#define	TEMPDRV_CUSTOM_CALLBACK_INDEX TEMPDRV_INT_CALLBACK_DEPTH

#define	TEMPDRV_ERRATA_FIX

#define	TEMPDRV_INT_CALLBACK_DEPTH 1

Typedefs
typedef enum ErrataState	ErrataState_t

Enumerations
enum	ErrataState { ERRATA_LOW = 0, ERRATA_MID = 1, ERRATA_HIGH = 2 }

Functions
static Ecode_t	addCallback ( TEMPDRV_CallbackSet_t *set, int8_t temp, TEMPDRV_Callback_t callback)
	Attempt to add a callback to a set.

static void	calibration (void)
	Prepare calibration values for temperature conversion.

static bool	checkForDuplicates ( TEMPDRV_CallbackSet_t *set, int8_t temp)
	Check if another callback has registered the same temperature.

static uint32_t	convertToEmu (int temp)
	Convert a temperature in °C to an EMU sensor value.

static int	convertToTemp (uint32_t emu)
	Convert EMU value to degrees Celsius.

static void	disableInterrupts (void)
	Turn off and clear EMU temperature related interrupts.

void	EMU_IRQHandler (void)
	EMU Interrupt Handler.

static void	errataCallback (int8_t temp, TEMPDRV_LimitType_t limit)
	Errata Callback.

static void	errataInit (void)
	Errata Initialization.

static void	errataStateUpdate (int8_t temp)
	Errata State Update.

static int8_t	findCallbackSpace ( TEMPDRV_CallbackSet_t *set)
	Find an empty spot for callback in set.

static bool	removeCallback ( TEMPDRV_CallbackSet_t *set, TEMPDRV_Callback_t callback)
	Remove a callback from the set.

Ecode_t	TEMPDRV_DeInit (void)
	De-initialize the TEMP driver.

Ecode_t	TEMPDRV_Enable (bool enable)
	Enable or disable the TEMP driver.

uint8_t	TEMPDRV_GetActiveCallbacks ( TEMPDRV_LimitType_t limit)
	Get the number of active callbacks for a limit.

int8_t	TEMPDRV_GetTemp (void)
	Get the current temperature.

Ecode_t	TEMPDRV_Init (void)
	Initialize the TEMP driver.

void	TEMPDRV_IRQHandler (void)
	TEMPDRV Interrupt Handler.

Ecode_t	TEMPDRV_RegisterCallback (int8_t temp, TEMPDRV_LimitType_t limit, TEMPDRV_Callback_t callback)
	Register a callback in the TEMP driver.

Ecode_t	TEMPDRV_UnregisterCallback ( TEMPDRV_Callback_t callback)
	Unregister a callback in the TEMP driver.

static void	updateInterrupts (void)
	Update interrupts based on active callbacks.

Variables
static int	calibrationEMU

static int	calibrationTEMP

static TEMPDRV_CallbackSet_t	errataHighTemp [3]

static TEMPDRV_CallbackSet_t	errataLowTemp [3]

static uint8_t	fallbackEMU = 0x90

static uint8_t	fallbackTEMP = 25

static TEMPDRV_CallbackSet_t *	highCallback

static TEMPDRV_CallbackSet_t *	lowCallback

static TEMPDRV_CallbackSet_t	nullCallback = { NULL, 0 }

static bool	TEMPDRV_EnableState = false

static bool	TEMPDRV_InitState = false

static TEMPDRV_CallbackSet_t	tempdrvHighCallbacks [TEMPDRV_CALLBACK_DEPTH]

static TEMPDRV_CallbackSet_t	tempdrvLowCallbacks [TEMPDRV_CALLBACK_DEPTH]

Enumeration Type Documentation

enum ErrataState

Enumerator
ERRATA_LOW	Low temperature <65°C.
ERRATA_MID	Medium temperature >65°C and <80°C.
ERRATA_HIGH	High temperature >80°C.

Definition at line 130 of file tempdrv.c .

Function Documentation

static Ecode_t addCallback	(	TEMPDRV_CallbackSet_t *	`set,`
		int8_t	`temp,`
		TEMPDRV_Callback_t	`callback`
	)

static

Attempt to add a callback to a set.

Parameters

[in]	`set`	Callback set to add callback to
[in]	`temp`	Temperature to register callback at
[in]	`callback`	Callback function

Returns

ECODE_EMDRV_TEMPDRV_OK on success.
ECODE_EMDRV_TEMPDRV_NO_SPACE if there is no space left for callbacks.

Definition at line 293 of file tempdrv.c .

References TEMPDRV_CallbackSet_t::callback , convertToEmu() , ECODE_EMDRV_TEMPDRV_NO_SPACE , ECODE_EMDRV_TEMPDRV_OK , findCallbackSpace() , TEMPDRV_CallbackSet_t::temp , and updateInterrupts() .

Referenced by TEMPDRV_RegisterCallback() .

static bool checkForDuplicates	(	TEMPDRV_CallbackSet_t *	`set,`
		int8_t	`temp`
	)

static

Check if another callback has registered the same temperature.

Parameters

[in]	`set`	Callback set to search
[in]	`temp`	Temperature to match

Returns: true if a duplicate is found, false if no duplicates is found.

Definition at line 349 of file tempdrv.c .

References convertToEmu() .

Referenced by TEMPDRV_RegisterCallback() .

static uint32_t convertToEmu ( int temp )

static

Convert a temperature in °C to an EMU sensor value.

Parameters

[in] temp Temperature to convert in degrees Celsius

Returns: EMU temperature sensor value that represents the given temperature

Definition at line 403 of file tempdrv.c .

Referenced by addCallback() , checkForDuplicates() , and errataInit() .

static int convertToTemp ( uint32_t emu )

static

Convert EMU value to degrees Celsius.

Parameters

[in] emu EMU value to convert

Returns: temperature in degrees Celsius

Definition at line 376 of file tempdrv.c .

Referenced by TEMPDRV_GetTemp() .

static void errataCallback	(	int8_t	`temp,`
		TEMPDRV_LimitType_t	`limit`
	)

static

Errata Callback.

This function is called by the TEMPDRV_IRQHandler and will change the state depending on the current temperature.

Definition at line 155 of file tempdrv.c .

References errataStateUpdate() .

Referenced by errataInit() .

static void errataInit ( void )

static

Errata Initialization.

Initialize the temperature thresholds based on calibration values and initializes the errata fix based on the current temperature.

Definition at line 215 of file tempdrv.c .

References TEMPDRV_CallbackSet_t::callback , convertToEmu() , ERRATA_HIGH , ERRATA_LOW , ERRATA_MID , errataCallback() , errataStateUpdate() , SYSTEM_ChipRevision_TypeDef::major , SYSTEM_ChipRevisionGet() , TEMPDRV_CallbackSet_t::temp , and TEMPDRV_GetTemp() .

Referenced by TEMPDRV_Init() .

static void errataStateUpdate ( int8_t temp )

static

Errata State Update.

Updates registers based on the current temperature

Definition at line 168 of file tempdrv.c .

References EMU_SetBiasMode() , ERRATA_HIGH , ERRATA_LOW , and ERRATA_MID .

Referenced by errataCallback() , and errataInit() .

static int8_t findCallbackSpace ( TEMPDRV_CallbackSet_t * set )

static

Find an empty spot for callback in set.

Parameters

[in] set Callback set to search

Returns: index of empty space if found, -1 if none

Definition at line 263 of file tempdrv.c .

Referenced by addCallback() .

static bool removeCallback	(	TEMPDRV_CallbackSet_t *	`set,`
		TEMPDRV_Callback_t	`callback`
	)

static

Remove a callback from the set.

Parameters

[in]	`set`	Callback set to remove callback from
[in]	`callback`	Callback function

Returns: true on success and false if the callback was not found.

Definition at line 320 of file tempdrv.c .

References TEMPDRV_CallbackSet_t::callback , TEMPDRV_CallbackSet_t::temp , and updateInterrupts() .

Referenced by TEMPDRV_UnregisterCallback() .

static void updateInterrupts ( void )

static

Update interrupts based on active callbacks.

There can only be two temperature thresholds active in the EMU sensor at a single point in time. One threshold for increasing temperature and one threshold for decreasing temperature. The responsibility of this function is to always select which temperature thresholds that should be activated in the EMU sensor at any given time.

Definition at line 440 of file tempdrv.c .

References TEMPDRV_CallbackSet_t::callback , EMU_IntDisable() , EMU_IntEnable() , and TEMPDRV_CallbackSet_t::temp .

Referenced by addCallback() , removeCallback() , TEMPDRV_Enable() , TEMPDRV_Init() , and TEMPDRV_IRQHandler() .

tempdrv.c File Reference

License

Data Structures

Macros

Typedefs

Enumerations

Functions

Variables

Enumeration Type Documentation

Function Documentation