EFM32 Gecko Software Documentation
efm32g-doc-5.1.2
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TEMPDRV API implementation.
(C) Copyright 2014 Silicon Labs, http://www.silabs.com
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Definition in file tempdrv.c.
#include "em_device.h"
#include "em_system.h"
#include "em_emu.h"
#include "string.h"
#include "tempdrv.h"
Go to the source code of this file.
Data Structures | |
struct | TEMPDRV_CallbackSet_t |
Functions | |
static Ecode_t | addCallback (TEMPDRV_CallbackSet_t *set, int8_t temp, TEMPDRV_Callback_t callback) |
Attempt to add a callback to a set. More... | |
static bool | checkForDuplicates (TEMPDRV_CallbackSet_t *set, int8_t temp) |
Check if another callback has registered the same temperature. More... | |
static uint8_t | convertToEmu (int8_t temp) |
Convert a temperature in °C to an EMU sensor value. More... | |
static int8_t | convertToTemp (uint8_t emu) |
Convert EMU value to degrees Celsius. More... | |
static void | disableInterrupts (void) |
Turn off and clear EMU temperature related interrupts. | |
void | EMU_IRQHandler (void) |
EMU Interrupt Handler. More... | |
static int8_t | findCallbackSpace (TEMPDRV_CallbackSet_t *set) |
Find an empty spot for callback in set. More... | |
static bool | removeCallback (TEMPDRV_CallbackSet_t *set, TEMPDRV_Callback_t callback) |
Remove a callback from the set. More... | |
Ecode_t | TEMPDRV_DeInit (void) |
De-initialize the TEMP driver. More... | |
Ecode_t | TEMPDRV_Enable (bool enable) |
Enable or disable the TEMP driver. More... | |
uint8_t | TEMPDRV_GetActiveCallbacks (TEMPDRV_LimitType_t limit) |
Get the number of active callbacks for a limit. More... | |
int8_t | TEMPDRV_GetTemp (void) |
Get the current temperature. More... | |
Ecode_t | TEMPDRV_Init (void) |
Initialize the TEMP driver. More... | |
void | TEMPDRV_IRQHandler (void) |
TEMPDRV Interrupt Handler. More... | |
Ecode_t | TEMPDRV_RegisterCallback (int8_t temp, TEMPDRV_LimitType_t limit, TEMPDRV_Callback_t callback) |
Register a callback in the TEMP driver. More... | |
Ecode_t | TEMPDRV_UnregisterCallback (TEMPDRV_Callback_t callback) |
Unregister a callback in the TEMP driver. More... | |
static void | updateInterrupts (void) |
Update interrupts based on active callbacks. More... | |
Variables | |
static int32_t | calibrationEMU |
static int32_t | calibrationTEMP |
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] |
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Attempt to add a callback to a set.
[in] | set | Callback set to add callback to |
[in] | temp | Temperature to register callback at |
[in] | callback | Callback function |
Definition at line 315 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().
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Check if another callback has registered the same temperature.
[in] | set | Callback set to search |
[in] | temp | Temperature to match |
true
if a duplicate is found, false
if no duplicates is found. Definition at line 374 of file tempdrv.c.
References convertToEmu().
Referenced by TEMPDRV_RegisterCallback().
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Convert a temperature in °C to an EMU sensor value.
[in] | temp | Temperature to convert in degrees Celsius |
Definition at line 430 of file tempdrv.c.
Referenced by addCallback(), and checkForDuplicates().
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Convert EMU value to degrees Celsius.
[in] | emu | EMU value to convert |
Definition at line 404 of file tempdrv.c.
Referenced by TEMPDRV_GetTemp().
void EMU_IRQHandler | ( | void | ) |
EMU Interrupt Handler.
The EMU_IRQHandler provided by TEMPDRV will call TEMPDRV_IRQ_Handler. Configure EMU_CUSTOM_IRQ_HANDLER = true if the application wants to implement its own EMU_IRQHandler. This is typically needed if one of the non-temperature related EMU interrupt flags are in use.
Definition at line 91 of file tempdrv.c.
References TEMPDRV_IRQHandler().
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Find an empty spot for callback in set.
[in] | set | Callback set to search |
Definition at line 283 of file tempdrv.c.
Referenced by addCallback().
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Remove a callback from the set.
[in] | set | Callback set to remove callback from |
[in] | callback | Callback function |
true
on success and false
if the callback was not found. Definition at line 343 of file tempdrv.c.
References TEMPDRV_CallbackSet_t::callback, TEMPDRV_CallbackSet_t::temp, and updateInterrupts().
Referenced by TEMPDRV_UnregisterCallback().
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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 466 of file tempdrv.c.
References TEMPDRV_CallbackSet_t::callback, EMU, and TEMPDRV_CallbackSet_t::temp.
Referenced by addCallback(), removeCallback(), TEMPDRV_Enable(), TEMPDRV_Init(), and TEMPDRV_IRQHandler().