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* @file em_timer.h
* @brief Timer/counter (TIMER) peripheral API
* @version 5.6.0
*******************************************************************************
* # License
* <b>Copyright 2016 Silicon Laboratories, Inc. www.silabs.com</b>
*******************************************************************************
*
* Permission is granted to anyone to use this software for any purpose,
* including commercial applications, and to alter it and redistribute it
* freely, subject to the following restrictions:
*
* 1. The origin of this software must not be misrepresented; you must not
* claim that you wrote the original software.
* 2. Altered source versions must be plainly marked as such, and must not be
* misrepresented as being the original software.
* 3. This notice may not be removed or altered from any source distribution.
*
* DISCLAIMER OF WARRANTY/LIMITATION OF REMEDIES: Silicon Labs has no
* obligation to support this Software. Silicon Labs is providing the
* Software "AS IS", with no express or implied warranties of any kind,
* including, but not limited to, any implied warranties of merchantability
* or fitness for any particular purpose or warranties against infringement
* of any proprietary rights of a third party.
*
* Silicon Labs will not be liable for any consequential, incidental, or
* special damages, or any other relief, or for any claim by any third party,
* arising from your use of this Software.
*
******************************************************************************/
#ifndef EM_TIMER_H
#define EM_TIMER_H
#include "em_device.h"
#if defined(TIMER_COUNT) && (TIMER_COUNT > 0)
#include <stdbool.h>
#include "em_assert.h"
#ifdef __cplusplus
extern "C" {
#endif
/***************************************************************************//**
* @addtogroup emlib
* @{
******************************************************************************/
/***************************************************************************//**
* @addtogroup TIMER
* @{
******************************************************************************/
/*******************************************************************************
******************************* DEFINES ***********************************
******************************************************************************/
/** @cond DO_NOT_INCLUDE_WITH_DOXYGEN */
/** Validation of TIMER register block pointer reference for assert statements. */
#define TIMER_REF_VALID(ref) TIMER_Valid(ref)
/** Validation of TIMER compare/capture channel number. */
#if defined(_SILICON_LABS_32B_SERIES_0)
#define TIMER_CH_VALID(ch) ((ch) < 3)
#elif defined(_SILICON_LABS_32B_SERIES_1)
#define TIMER_CH_VALID(ch) ((ch) < 4)
#elif defined(_SILICON_LABS_32B_SERIES_2)
#define TIMER_CH_VALID(ch) ((ch) < 3)
#else
#error "Unknown device. Undefined number of channels."
#endif
/** @endcond */
/*******************************************************************************
******************************** ENUMS ************************************
******************************************************************************/
/** Timer compare/capture mode. */
typedef enum {
#if defined (_TIMER_CC_CTRL_MODE_MASK)
timerCCModeOff = _TIMER_CC_CTRL_MODE_OFF, /**< Channel turned off. */
timerCCModeCapture = _TIMER_CC_CTRL_MODE_INPUTCAPTURE, /**< Input capture. */
timerCCModeCompare = _TIMER_CC_CTRL_MODE_OUTPUTCOMPARE, /**< Output compare. */
timerCCModePWM = _TIMER_CC_CTRL_MODE_PWM /**< Pulse-Width modulation. */
#endif
#if defined (_TIMER_CC_CFG_MODE_MASK)
timerCCModeOff = _TIMER_CC_CFG_MODE_OFF, /**< Channel turned off. */
timerCCModeCapture = _TIMER_CC_CFG_MODE_INPUTCAPTURE, /**< Input capture. */
timerCCModeCompare = _TIMER_CC_CFG_MODE_OUTPUTCOMPARE, /**< Output compare. */
timerCCModePWM = _TIMER_CC_CFG_MODE_PWM /**< Pulse-Width modulation. */
#endif
} TIMER_CCMode_TypeDef;
/** Clock select. */
typedef enum {
#if defined (_TIMER_CTRL_CLKSEL_MASK)
timerClkSelHFPerClk = _TIMER_CTRL_CLKSEL_PRESCHFPERCLK, /**< Prescaled HFPER clock. */
timerClkSelCC1 = _TIMER_CTRL_CLKSEL_CC1, /**< Compare/Capture Channel 1 Input. */
timerClkSelCascade = _TIMER_CTRL_CLKSEL_TIMEROUF /**< Cascaded clocked by underflow or overflow by lower numbered timer. */
#endif
#if defined (_TIMER_CFG_CLKSEL_MASK)
timerClkSelHFPerClk = _TIMER_CFG_CLKSEL_PRESCEM01GRPACLK, /**< Prescaled EM01GRPA clock. */
timerClkSelCC1 = _TIMER_CFG_CLKSEL_CC1, /**< Compare/Capture Channel 1 Input. */
timerClkSelCascade = _TIMER_CFG_CLKSEL_TIMEROUF /**< Cascaded clocked by underflow or overflow by lower numbered timer. */
#endif
} TIMER_ClkSel_TypeDef;
/** Input capture edge select. */
typedef enum {
/** Rising edges detected. */
timerEdgeRising = _TIMER_CC_CTRL_ICEDGE_RISING,
/** Falling edges detected. */
timerEdgeFalling = _TIMER_CC_CTRL_ICEDGE_FALLING,
/** Both edges detected. */
timerEdgeBoth = _TIMER_CC_CTRL_ICEDGE_BOTH,
/** No edge detection, leave signal as is. */
timerEdgeNone = _TIMER_CC_CTRL_ICEDGE_NONE
} TIMER_Edge_TypeDef;
/** Input capture event control. */
typedef enum {
/** PRS output pulse, interrupt flag, and DMA request set on every capture. */
timerEventEveryEdge = _TIMER_CC_CTRL_ICEVCTRL_EVERYEDGE,
/** PRS output pulse, interrupt flag, and DMA request set on every second capture. */
timerEventEvery2ndEdge = _TIMER_CC_CTRL_ICEVCTRL_EVERYSECONDEDGE,
/**
* PRS output pulse, interrupt flag, and DMA request set on rising edge (if
* input capture edge = BOTH).
*/
timerEventRising = _TIMER_CC_CTRL_ICEVCTRL_RISING,
/**
* PRS output pulse, interrupt flag, and DMA request set on falling edge (if
* input capture edge = BOTH).
*/
timerEventFalling = _TIMER_CC_CTRL_ICEVCTRL_FALLING
} TIMER_Event_TypeDef;
/** Input edge action. */
typedef enum {
/** No action taken. */
timerInputActionNone = _TIMER_CTRL_FALLA_NONE,
/** Start counter without reload. */
timerInputActionStart = _TIMER_CTRL_FALLA_START,
/** Stop counter without reload. */
timerInputActionStop = _TIMER_CTRL_FALLA_STOP,
/** Reload and start counter. */
timerInputActionReloadStart = _TIMER_CTRL_FALLA_RELOADSTART
} TIMER_InputAction_TypeDef;
/** Timer mode. */
typedef enum {
#if defined (_TIMER_CTRL_MODE_MASK)
timerModeUp = _TIMER_CTRL_MODE_UP, /**< Up-counting. */
timerModeDown = _TIMER_CTRL_MODE_DOWN, /**< Down-counting. */
timerModeUpDown = _TIMER_CTRL_MODE_UPDOWN, /**< Up/down-counting. */
timerModeQDec = _TIMER_CTRL_MODE_QDEC /**< Quadrature decoder. */
#endif
#if defined (_TIMER_CFG_MODE_MASK)
timerModeUp = _TIMER_CFG_MODE_UP, /**< Up-counting. */
timerModeDown = _TIMER_CFG_MODE_DOWN, /**< Down-counting. */
timerModeUpDown = _TIMER_CFG_MODE_UPDOWN, /**< Up/down-counting. */
timerModeQDec = _TIMER_CFG_MODE_QDEC /**< Quadrature decoder. */
#endif
} TIMER_Mode_TypeDef;
/** Compare/capture output action. */
typedef enum {
/** No action. */
timerOutputActionNone = _TIMER_CC_CTRL_CUFOA_NONE,
/** Toggle on event. */
timerOutputActionToggle = _TIMER_CC_CTRL_CUFOA_TOGGLE,
/** Clear on event. */
timerOutputActionClear = _TIMER_CC_CTRL_CUFOA_CLEAR,
/** Set on event. */
timerOutputActionSet = _TIMER_CC_CTRL_CUFOA_SET
} TIMER_OutputAction_TypeDef;
/** Prescaler. */
typedef enum {
#if defined (_TIMER_CTRL_PRESC_MASK)
timerPrescale1 = _TIMER_CTRL_PRESC_DIV1, /**< Divide by 1. */
timerPrescale2 = _TIMER_CTRL_PRESC_DIV2, /**< Divide by 2. */
timerPrescale4 = _TIMER_CTRL_PRESC_DIV4, /**< Divide by 4. */
timerPrescale8 = _TIMER_CTRL_PRESC_DIV8, /**< Divide by 8. */
timerPrescale16 = _TIMER_CTRL_PRESC_DIV16, /**< Divide by 16. */
timerPrescale32 = _TIMER_CTRL_PRESC_DIV32, /**< Divide by 32. */
timerPrescale64 = _TIMER_CTRL_PRESC_DIV64, /**< Divide by 64. */
timerPrescale128 = _TIMER_CTRL_PRESC_DIV128, /**< Divide by 128. */
timerPrescale256 = _TIMER_CTRL_PRESC_DIV256, /**< Divide by 256. */
timerPrescale512 = _TIMER_CTRL_PRESC_DIV512, /**< Divide by 512. */
timerPrescale1024 = _TIMER_CTRL_PRESC_DIV1024 /**< Divide by 1024. */
#endif
#if defined (_TIMER_CFG_PRESC_MASK)
timerPrescale1 = _TIMER_CFG_PRESC_DIV1, /**< Divide by 1. */
timerPrescale2 = _TIMER_CFG_PRESC_DIV2, /**< Divide by 2. */
timerPrescale4 = _TIMER_CFG_PRESC_DIV4, /**< Divide by 4. */
timerPrescale8 = _TIMER_CFG_PRESC_DIV8, /**< Divide by 8. */
timerPrescale16 = _TIMER_CFG_PRESC_DIV16, /**< Divide by 16. */
timerPrescale32 = _TIMER_CFG_PRESC_DIV32, /**< Divide by 32. */
timerPrescale64 = _TIMER_CFG_PRESC_DIV64, /**< Divide by 64. */
timerPrescale128 = _TIMER_CFG_PRESC_DIV128, /**< Divide by 128. */
timerPrescale256 = _TIMER_CFG_PRESC_DIV256, /**< Divide by 256. */
timerPrescale512 = _TIMER_CFG_PRESC_DIV512, /**< Divide by 512. */
timerPrescale1024 = _TIMER_CFG_PRESC_DIV1024 /**< Divide by 1024. */
#endif
} TIMER_Prescale_TypeDef;
/** Peripheral Reflex System signal. */
typedef uint8_t TIMER_PRSSEL_TypeDef;
/** Deprecated PRS channel selector. New code should use an integer instead of
* using these deprecated enum values. */
#define timerPRSSELCh0 0UL
#define timerPRSSELCh1 1UL
#define timerPRSSELCh2 2UL
#define timerPRSSELCh3 3UL
#define timerPRSSELCh4 4UL
#define timerPRSSELCh5 5UL
#define timerPRSSELCh6 6UL
#define timerPRSSELCh7 7UL
#define timerPRSSELCh8 8UL
#define timerPRSSELCh9 9UL
#define timerPRSSELCh10 10UL
#define timerPRSSELCh11 11UL
#if defined (_TIMER_CC_CFG_INSEL_MASK)
typedef enum {
timerPrsInputNone = 0x0,
timerPrsInputSync = _TIMER_CC_CFG_INSEL_PRSSYNC,
timerPrsInputAsyncLevel = _TIMER_CC_CFG_INSEL_PRSASYNCLEVEL,
timerPrsInputAsyncPulse = _TIMER_CC_CFG_INSEL_PRSASYNCPULSE,
} TIMER_PrsInput_TypeDef;
#endif
#if defined(_TIMER_DTFC_DTFA_MASK) || defined(_TIMER_DTFCFG_DTFA_MASK)
/** DT (Dead Time) Fault Actions. */
typedef enum {
#if defined(_TIMER_DTFC_DTFA_MASK)
timerDtiFaultActionNone = _TIMER_DTFC_DTFA_NONE, /**< No action on fault. */
timerDtiFaultActionInactive = _TIMER_DTFC_DTFA_INACTIVE, /**< Set outputs inactive. */
timerDtiFaultActionClear = _TIMER_DTFC_DTFA_CLEAR, /**< Clear outputs. */
timerDtiFaultActionTristate = _TIMER_DTFC_DTFA_TRISTATE /**< Tristate outputs. */
#endif
#if defined(_TIMER_DTFCFG_DTFA_MASK)
timerDtiFaultActionNone = _TIMER_DTFCFG_DTFA_NONE, /**< No action on fault. */
timerDtiFaultActionInactive = _TIMER_DTFCFG_DTFA_INACTIVE, /**< Set outputs inactive. */
timerDtiFaultActionClear = _TIMER_DTFCFG_DTFA_CLEAR, /**< Clear outputs. */
timerDtiFaultActionTristate = _TIMER_DTFCFG_DTFA_TRISTATE /**< Tristate outputs. */
#endif
} TIMER_DtiFaultAction_TypeDef;
#endif
/*******************************************************************************
******************************* STRUCTS ***********************************
******************************************************************************/
/** TIMER initialization structure. */
typedef struct {
/** Start counting when initialization completed. */
bool enable;
/** Counter shall keep running during debug halt. */
bool debugRun;
/** Prescaling factor, if HFPER clock used. */
TIMER_Prescale_TypeDef prescale;
/** Clock selection. */
TIMER_ClkSel_TypeDef clkSel;
#if defined(TIMER_CTRL_X2CNT) && (defined(TIMER_CTRL_ATI) || defined(TIMER_CFG_ATI))
/** 2x Count mode, counter increments/decrements by 2, meant for PWM mode. */
bool count2x;
/** ATI (Always Track Inputs) makes CCPOL always track
* the polarity of the inputs. */
bool ati;
#endif
/** Action on falling input edge. */
TIMER_InputAction_TypeDef fallAction;
/** Action on rising input edge. */
TIMER_InputAction_TypeDef riseAction;
/** Counting mode. */
TIMER_Mode_TypeDef mode;
/** DMA request clear on active. */
bool dmaClrAct;
/** Select X2 or X4 quadrature decode mode (if used). */
bool quadModeX4;
/** Determines if only counting up or down once. */
bool oneShot;
/** Timer start/stop/reload by other timers. */
bool sync;
} TIMER_Init_TypeDef;
/** Default configuration for TIMER initialization structure. */
#if defined(TIMER_CTRL_X2CNT) && (defined(TIMER_CTRL_ATI) || defined(TIMER_CFG_ATI))
#define TIMER_INIT_DEFAULT \
{ \
true, /* Enable timer when initialization completes. */ \
false, /* Stop counter during debug halt. */ \
timerPrescale1, /* No prescaling. */ \
timerClkSelHFPerClk, /* Select HFPER clock. */ \
false, /* Not 2x count mode. */ \
false, /* No ATI. */ \
timerInputActionNone, /* No action on falling input edge. */ \
timerInputActionNone, /* No action on rising input edge. */ \
timerModeUp, /* Up-counting. */ \
false, /* Do not clear DMA requests when DMA channel is active. */ \
false, /* Select X2 quadrature decode mode (if used). */ \
false, /* Disable one shot. */ \
false /* Not started/stopped/reloaded by other timers. */ \
}
#else
#define TIMER_INIT_DEFAULT \
{ \
true, /* Enable timer when initialization completes. */ \
false, /* Stop counter during debug halt. */ \
timerPrescale1, /* No prescaling. */ \
timerClkSelHFPerClk, /* Select HFPER clock. */ \
timerInputActionNone, /* No action on falling input edge. */ \
timerInputActionNone, /* No action on rising input edge. */ \
timerModeUp, /* Up-counting. */ \
false, /* Do not clear DMA requests when DMA channel is active. */ \
false, /* Select X2 quadrature decode mode (if used). */ \
false, /* Disable one shot. */ \
false /* Not started/stopped/reloaded by other timers. */ \
}
#endif
/** PRS Output configuration. */
typedef enum {
timerPrsOutputPulse = 0, /**< Pulse PRS output from a channel. */
timerPrsOutputLevel = 1, /**< PRS output follows CC out level. */
timerPrsOutputDefault = timerPrsOutputPulse, /**< Default PRS output behavior. */
} TIMER_PrsOutput_t;
/** TIMER compare/capture initialization structure. */
typedef struct {
/** Input capture event control. */
TIMER_Event_TypeDef eventCtrl;
/** Input capture edge select. */
TIMER_Edge_TypeDef edge;
/**
* Peripheral reflex system trigger selection. Only applicable if @p prsInput
* is enabled.
*/
TIMER_PRSSEL_TypeDef prsSel;
/** Counter underflow output action. */
TIMER_OutputAction_TypeDef cufoa;
/** Counter overflow output action. */
TIMER_OutputAction_TypeDef cofoa;
/** Counter match output action. */
TIMER_OutputAction_TypeDef cmoa;
/** Compare/capture channel mode. */
TIMER_CCMode_TypeDef mode;
/** Enable digital filter. */
bool filter;
/** Select TIMERnCCx (false) or PRS input (true). */
bool prsInput;
/**
* Compare output initial state. Only used in Output Compare and PWM mode.
* When true, the compare/PWM output is set high when the counter is
* disabled. When counting resumes, this value will represent the initial
* value for the compare/PWM output. If the bit is cleared, the output
* will be cleared when the counter is disabled.
*/
bool coist;
/** Invert output from compare/capture channel. */
bool outInvert;
/**
* PRS output configuration. PRS output from a timer can either be a
* pulse output or a level output that follows the CC out value.
*/
TIMER_PrsOutput_t prsOutput;
#if defined(_TIMER_CC_CFG_INSEL_MASK)
/* When PRS input is used this field is used to configure the type of
* PRS input. */
TIMER_PrsInput_TypeDef prsInputType;
#endif
} TIMER_InitCC_TypeDef;
/** Default configuration for TIMER compare/capture initialization structure. */
#if defined(_TIMER_CC_CFG_INSEL_MASK)
#define TIMER_INITCC_DEFAULT \
{ \
timerEventEveryEdge, /* Event on every capture. */ \
timerEdgeRising, /* Input capture edge on rising edge. */ \
0, /* Not used by default, select PRS channel 0. */ \
timerOutputActionNone, /* No action on underflow. */ \
timerOutputActionNone, /* No action on overflow. */ \
timerOutputActionNone, /* No action on match. */ \
timerCCModeOff, /* Disable compare/capture channel. */ \
false, /* Disable filter. */ \
false, /* No PRS input. */ \
false, /* Clear output when counter disabled. */ \
false, /* Do not invert output. */ \
timerPrsOutputDefault, /* Use default PRS output configuration. */ \
timerPrsInputNone /* No PRS input, so input type is none. */ \
}
#else
#define TIMER_INITCC_DEFAULT \
{ \
timerEventEveryEdge, /* Event on every capture. */ \
timerEdgeRising, /* Input capture edge on rising edge. */ \
0, /* Not used by default, select PRS channel 0. */ \
timerOutputActionNone, /* No action on underflow. */ \
timerOutputActionNone, /* No action on overflow. */ \
timerOutputActionNone, /* No action on match. */ \
timerCCModeOff, /* Disable compare/capture channel. */ \
false, /* Disable filter. */ \
false, /* No PRS input. */ \
false, /* Clear output when counter disabled. */ \
false, /* Do not invert output. */ \
timerPrsOutputDefault, /* Use default PRS output configuration. */ \
}
#endif
#if defined(_TIMER_DTCTRL_MASK)
/** TIMER Dead Time Insertion (DTI) initialization structure. */
typedef struct {
/** Enable DTI or leave it disabled until @ref TIMER_EnableDTI() is called. */
bool enable;
/** DTI Output Polarity. */
bool activeLowOut;
/** DTI Complementary Output Invert. */
bool invertComplementaryOut;
/** Enable Automatic Start-up functionality (when debugger exits). */
bool autoRestart;
/** Enable/disable PRS as DTI input. */
bool enablePrsSource;
/** Select which PRS channel as DTI input. Only valid if @p enablePrsSource
is enabled. */
TIMER_PRSSEL_TypeDef prsSel;
/** DTI prescaling factor, if HFPER clock used. */
TIMER_Prescale_TypeDef prescale;
/** DTI Rise Time */
unsigned int riseTime;
/** DTI Fall Time */
unsigned int fallTime;
/** DTI outputs enable bit mask, consisting of one bit per DTI
output signal, i.e., CC0, CC1, CC2, CDTI0, CDTI1, and CDTI2.
This value should consist of one or more TIMER_DTOGEN_DTOGnnnEN flags
(defined in \<part_name\>_timer.h) OR'ed together. */
uint32_t outputsEnableMask;
/** Enable core lockup as a fault source. */
bool enableFaultSourceCoreLockup;
/** Enable debugger as a fault source. */
bool enableFaultSourceDebugger;
/** Enable PRS fault source 0 (@p faultSourcePrsSel0). */
bool enableFaultSourcePrsSel0;
/** Select which PRS signal to be PRS fault source 0. */
TIMER_PRSSEL_TypeDef faultSourcePrsSel0;
/** Enable PRS fault source 1 (@p faultSourcePrsSel1). */
bool enableFaultSourcePrsSel1;
/** Select which PRS signal to be PRS fault source 1. */
TIMER_PRSSEL_TypeDef faultSourcePrsSel1;
/** Fault Action */
TIMER_DtiFaultAction_TypeDef faultAction;
} TIMER_InitDTI_TypeDef;
/** Default configuration for TIMER DTI initialization structure. */
#define TIMER_INITDTI_DEFAULT \
{ \
true, /* Enable the DTI. */ \
false, /* CC[0|1|2] outputs are active high. */ \
false, /* CDTI[0|1|2] outputs are not inverted. */ \
false, /* No auto restart when debugger exits. */ \
false, /* No PRS source selected. */ \
0, /* Not used by default, select PRS channel 0. */ \
timerPrescale1, /* No prescaling. */ \
0, /* No rise time. */ \
0, /* No fall time. */ \
TIMER_DTOGEN_DTOGCC0EN | TIMER_DTOGEN_DTOGCDTI0EN, /* Enable CC0 and CDTI0. */ \
true, /* Enable core lockup as fault source. */ \
true, /* Enable debugger as fault source. */ \
false, /* Disable PRS fault source 0. */ \
0, /* Not used by default, select PRS channel 0. */ \
false, /* Disable PRS fault source 1. */ \
0, /* Not used by default, select PRS channel 0. */ \
timerDtiFaultActionInactive, /* No fault action. */ \
}
#endif /* _TIMER_DTCTRL_MASK */
/*******************************************************************************
***************************** PROTOTYPES **********************************
******************************************************************************/
/***************************************************************************//**
* @brief
* Validate TIMER register block pointer.
*
* @param[in] ref
* Pointer to TIMER peripheral register block.
*
* @return
* True if ref points to a valid timer, false otherwise.
******************************************************************************/
__STATIC_INLINE bool TIMER_Valid(const TIMER_TypeDef *ref)
{
return (ref == TIMER0)
#if defined(TIMER1)
|| (ref == TIMER1)
#endif
#if defined(TIMER2)
|| (ref == TIMER2)
#endif
#if defined(TIMER3)
|| (ref == TIMER3)
#endif
#if defined(TIMER4)
|| (ref == TIMER4)
#endif
#if defined(TIMER5)
|| (ref == TIMER5)
#endif
#if defined(TIMER6)
|| (ref == TIMER6)
#endif
#if defined(WTIMER0)
|| (ref == WTIMER0)
#endif
#if defined(WTIMER1)
|| (ref == WTIMER1)
#endif
#if defined(WTIMER2)
|| (ref == WTIMER2)
#endif
#if defined(WTIMER3)
|| (ref == WTIMER3)
#endif
;
}
/***************************************************************************//**
* @brief
* Get the Max count of the timer.
*
* @param[in] timer
* Pointer to TIMER peripheral register block.
*
* @return
* The max count value of the timer. This is 0xFFFF for 16 bit timers
* and 0xFFFFFFFF for 32 bit timers.
******************************************************************************/
__STATIC_INLINE uint32_t TIMER_MaxCount(const TIMER_TypeDef *ref)
{
#if defined(WTIMER_PRESENT)
if ((ref == WTIMER0)
#if defined(WTIMER1)
|| (ref == WTIMER1)
#endif
#if defined(WTIMER2)
|| (ref == WTIMER2)
#endif
#if defined(WTIMER3)
|| (ref == WTIMER3)
#endif
) {
return 0xFFFFFFFFUL;
}
#else
(void) ref;
#endif
return 0xFFFFUL;
}
/***************************************************************************//**
* @brief
* Get compare/capture value for compare/capture channel.
*
* @param[in] timer
* Pointer to TIMER peripheral register block.
*
* @param[in] ch
* Compare/capture channel to access.
*
* @return
* Current capture value.
******************************************************************************/
__STATIC_INLINE uint32_t TIMER_CaptureGet(TIMER_TypeDef *timer, unsigned int ch)
{
#if defined (_TIMER_CC_CFG_MASK)
if ((timer->CC[ch].CFG & _TIMER_CC_CFG_MODE_MASK) == TIMER_CC_CFG_MODE_INPUTCAPTURE) {
return timer->CC[ch].ICF;
} else {
return timer->CC[ch].OC;
}
#else
return timer->CC[ch].CCV;
#endif
}
/***************************************************************************//**
* @brief
* Get buffered compare/capture value for compare/capture channel.
*
* @param[in] timer
* Pointer to TIMER peripheral register block.
*
* @param[in] ch
* Compare/capture channel to access.
*
* @return
* Current buffered capture value.
******************************************************************************/
__STATIC_INLINE uint32_t TIMER_CaptureBufGet(TIMER_TypeDef *timer, unsigned int ch)
{
#if defined (_TIMER_CC_CFG_MASK)
if ((timer->CC[ch].CFG & _TIMER_CC_CFG_MODE_MASK) == TIMER_CC_CFG_MODE_INPUTCAPTURE) {
return timer->CC[ch].ICOF;
} else {
return timer->CC[ch].OCB;
}
#else
return timer->CC[ch].CCVB;
#endif
}
/***************************************************************************//**
* @brief
* Set compare value buffer for compare/capture channel when operating in
* compare or PWM mode.
*
* @details
* The compare value buffer holds the value which will be written to
* TIMERn_CCx_CCV on an update event if the buffer has been updated since
* the last event.
*
* @param[in] timer
* Pointer to TIMER peripheral register block.
*
* @param[in] ch
* Compare/capture channel to access.
*
* @param[in] val
* Value to set in compare value buffer register.
******************************************************************************/
__STATIC_INLINE void TIMER_CompareBufSet(TIMER_TypeDef *timer,
unsigned int ch,
uint32_t val)
{
EFM_ASSERT(val <= TIMER_MaxCount(timer));
#if defined (_TIMER_CC_CFG_MASK)
EFM_ASSERT(timer->EN & TIMER_EN_EN);
timer->CC[ch].OCB = val;
#else
timer->CC[ch].CCVB = val;
#endif
}
/***************************************************************************//**
* @brief
* Set compare value for compare/capture channel when operating in compare
* or PWM mode.
*
* @param[in] timer
* Pointer to TIMER peripheral register block.
*
* @param[in] ch
* Compare/capture channel to access.
*
* @param[in] val
* Value to set in compare value register.
******************************************************************************/
__STATIC_INLINE void TIMER_CompareSet(TIMER_TypeDef *timer,
unsigned int ch,
uint32_t val)
{
EFM_ASSERT(val <= TIMER_MaxCount(timer));
#if defined (_TIMER_CC_CFG_MASK)
EFM_ASSERT(timer->EN & TIMER_EN_EN);
timer->CC[ch].OC = val;
#else
timer->CC[ch].CCV = val;
#endif
}
/***************************************************************************//**
* @brief
* Get TIMER counter value.
*
* @param[in] timer
* Pointer to TIMER peripheral register block.
*
* @return
* Current TIMER counter value.
******************************************************************************/
__STATIC_INLINE uint32_t TIMER_CounterGet(TIMER_TypeDef *timer)
{
return timer->CNT;
}
/***************************************************************************//**
* @brief
* Set TIMER counter value.
*
* @param[in] timer
* Pointer to TIMER peripheral register block.
*
* @param[in] val
* Value to set counter to.
******************************************************************************/
__STATIC_INLINE void TIMER_CounterSet(TIMER_TypeDef *timer, uint32_t val)
{
EFM_ASSERT(val <= TIMER_MaxCount(timer));
#if defined(TIMER_HAS_SET_CLEAR)
bool enabled = (timer->EN & TIMER_EN_EN) != 0UL;
timer->EN_SET = TIMER_EN_EN;
#endif
timer->CNT = val;
#if defined(TIMER_HAS_SET_CLEAR)
if (!enabled) {
timer->EN_CLR = TIMER_EN_EN;
}
#endif
}
/***************************************************************************//**
* @brief
* Start/stop TIMER.
*
* @param[in] timer
* Pointer to TIMER peripheral register block.
*
* @param[in] enable
* Set to true to enable counting; set to false otherwise.
******************************************************************************/
__STATIC_INLINE void TIMER_Enable(TIMER_TypeDef *timer, bool enable)
{
EFM_ASSERT(TIMER_REF_VALID(timer));
if (enable) {
timer->CMD = TIMER_CMD_START;
} else {
timer->CMD = TIMER_CMD_STOP;
}
}
void TIMER_Init(TIMER_TypeDef *timer, const TIMER_Init_TypeDef *init);
void TIMER_InitCC(TIMER_TypeDef *timer,
unsigned int ch,
const TIMER_InitCC_TypeDef *init);
#if defined(_TIMER_DTCTRL_MASK)
void TIMER_InitDTI(TIMER_TypeDef *timer, const TIMER_InitDTI_TypeDef *init);
/***************************************************************************//**
* @brief
* Enable or disable DTI unit.
*
* @param[in] timer
* Pointer to TIMER peripheral register block.
*
* @param[in] enable
* Set to true to enable DTI unit; set to false otherwise.
******************************************************************************/
__STATIC_INLINE void TIMER_EnableDTI(TIMER_TypeDef *timer, bool enable)
{
#if defined(TIMER_HAS_SET_CLEAR)
uint32_t timerEn = timer->EN & TIMER_EN_EN;
timer->EN_CLR = TIMER_EN_EN;
if (enable) {
timer->DTCFG_SET = TIMER_DTCFG_DTEN;
} else {
timer->DTCFG_CLR = TIMER_DTCFG_DTEN;
}
timer->EN_SET = timerEn;
#else
EFM_ASSERT(TIMER0 == timer);
if (enable) {
timer->DTCTRL |= TIMER_DTCTRL_DTEN;
} else {
timer->DTCTRL &= ~TIMER_DTCTRL_DTEN;
}
#endif
}
/***************************************************************************//**
* @brief
* Get DTI fault source flags status.
*
* @note
* Event bits are not cleared by this function.
*
* @param[in] timer
* Pointer to TIMER peripheral register block.
*
* @return
* Status of the DTI fault source flags. Returns one or more valid
* DTI fault source flags (TIMER_DTFAULT_nnn) OR'ed together.
******************************************************************************/
__STATIC_INLINE uint32_t TIMER_GetDTIFault(TIMER_TypeDef *timer)
{
EFM_ASSERT(TIMER0 == timer);
return timer->DTFAULT;
}
/***************************************************************************//**
* @brief
* Clear DTI fault source flags.
*
* @param[in] timer
* Pointer to TIMER peripheral register block.
*
* @param[in] flags
* DTI fault source(s) to clear. Use one or more valid DTI fault
* source flags (TIMER_DTFAULT_nnn) OR'ed together.
******************************************************************************/
__STATIC_INLINE void TIMER_ClearDTIFault(TIMER_TypeDef *timer, uint32_t flags)
{
EFM_ASSERT(TIMER0 == timer);
#if defined (TIMER_EN_EN)
EFM_ASSERT(timer->EN & TIMER_EN_EN);
#endif
timer->DTFAULTC = flags;
}
#endif /* _TIMER_DTCTRL_MASK */
/***************************************************************************//**
* @brief
* Clear one or more pending TIMER interrupts.
*
* @param[in] timer
* Pointer to TIMER peripheral register block.
*
* @param[in] flags
* Pending TIMER interrupt source(s) to clear. Use one or more valid
* interrupt flags for the TIMER module (TIMER_IF_nnn) OR'ed together.
******************************************************************************/
__STATIC_INLINE void TIMER_IntClear(TIMER_TypeDef *timer, uint32_t flags)
{
#if defined (TIMER_HAS_SET_CLEAR)
timer->IF_CLR = flags;
#else
timer->IFC = flags;
#endif
}
/***************************************************************************//**
* @brief
* Disable one or more TIMER interrupts.
*
* @param[in] timer
* Pointer to TIMER peripheral register block.
*
* @param[in] flags
* TIMER interrupt source(s) to disable. Use one or more valid
* interrupt flags for the TIMER module (TIMER_IF_nnn) OR'ed together.
******************************************************************************/
__STATIC_INLINE void TIMER_IntDisable(TIMER_TypeDef *timer, uint32_t flags)
{
timer->IEN &= ~flags;
}
/***************************************************************************//**
* @brief
* Enable one or more TIMER interrupts.
*
* @note
* Depending on the use, a pending interrupt may already be set prior to
* enabling the interrupt. To ignore a pending interrupt, consider using
* TIMER_IntClear() prior to enabling the interrupt.
*
* @param[in] timer
* Pointer to TIMER peripheral register block.
*
* @param[in] flags
* TIMER interrupt source(s) to enable. Use one or more valid
* interrupt flags for the TIMER module (TIMER_IF_nnn) OR'ed together.
******************************************************************************/
__STATIC_INLINE void TIMER_IntEnable(TIMER_TypeDef *timer, uint32_t flags)
{
timer->IEN |= flags;
}
/***************************************************************************//**
* @brief
* Get pending TIMER interrupt flags.
*
* @note
* Event bits are not cleared by this function.
*
* @param[in] timer
* Pointer to TIMER peripheral register block.
*
* @return
* TIMER interrupt source(s) pending. Returns one or more valid
* interrupt flags for the TIMER module (TIMER_IF_nnn) OR'ed together.
******************************************************************************/
__STATIC_INLINE uint32_t TIMER_IntGet(TIMER_TypeDef *timer)
{
return timer->IF;
}
/***************************************************************************//**
* @brief
* Get enabled and pending TIMER interrupt flags.
* Useful for handling more interrupt sources in the same interrupt handler.
*
* @param[in] timer
* Pointer to TIMER peripheral register block.
*
* @note
* Interrupt flags are not cleared by this function.
*
* @return
* Pending and enabled TIMER interrupt sources.
* The return value is the bitwise AND combination of
* - the OR combination of enabled interrupt sources in TIMERx_IEN_nnn
* register (TIMERx_IEN_nnn) and
* - the OR combination of valid interrupt flags of the TIMER module
* (TIMERx_IF_nnn).
******************************************************************************/
__STATIC_INLINE uint32_t TIMER_IntGetEnabled(TIMER_TypeDef *timer)
{
uint32_t ien;
/* Store TIMER->IEN in temporary variable in order to define explicit order
* of volatile accesses. */
ien = timer->IEN;
/* Bitwise AND of pending and enabled interrupts */
return timer->IF & ien;
}
/***************************************************************************//**
* @brief
* Set one or more pending TIMER interrupts from SW.
*
* @param[in] timer
* Pointer to TIMER peripheral register block.
*
* @param[in] flags
* TIMER interrupt source(s) to set to pending. Use one or more valid
* interrupt flags for the TIMER module (TIMER_IF_nnn) OR'ed together.
******************************************************************************/
__STATIC_INLINE void TIMER_IntSet(TIMER_TypeDef *timer, uint32_t flags)
{
#if defined (TIMER_HAS_SET_CLEAR)
timer->IF_SET = flags;
#else
timer->IFS = flags;
#endif
}
#if defined(_TIMER_DTLOCK_LOCKKEY_LOCK)
/***************************************************************************//**
* @brief
* Lock some of the TIMER registers in order to protect them from being
* modified.
*
* @details
* Refer to the reference manual for TIMER registers that will be locked.
*
* @note
* If locking the TIMER registers, they must be unlocked prior to using any
* TIMER API function that modifies TIMER registers protected by the lock.
*
* @param[in] timer
* Pointer to TIMER peripheral register block.
******************************************************************************/
__STATIC_INLINE void TIMER_Lock(TIMER_TypeDef *timer)
{
EFM_ASSERT(TIMER0 == timer);
#if defined (TIMER_EN_EN)
EFM_ASSERT(timer->EN & TIMER_EN_EN);
#endif
timer->DTLOCK = TIMER_DTLOCK_LOCKKEY_LOCK;
}
#endif
void TIMER_Reset(TIMER_TypeDef *timer);
/***************************************************************************//**
* @brief
* Set top value buffer for timer.
*
* @details
* When top value buffer register is updated, value is loaded into
* top value register at the next wrap around. This feature is useful
* in order to update top value safely when timer is running.
*
* @param[in] timer
* Pointer to TIMER peripheral register block.
*
* @param[in] val
* Value to set in top value buffer register.
******************************************************************************/
__STATIC_INLINE void TIMER_TopBufSet(TIMER_TypeDef *timer, uint32_t val)
{
EFM_ASSERT(val <= TIMER_MaxCount(timer));
#if defined (TIMER_EN_EN)
EFM_ASSERT(timer->EN & TIMER_EN_EN);
#endif
timer->TOPB = val;
}
/***************************************************************************//**
* @brief
* Get top value setting for timer.
*
* @param[in] timer
* Pointer to TIMER peripheral register block.
*
* @return
* Current top value.
******************************************************************************/
__STATIC_INLINE uint32_t TIMER_TopGet(TIMER_TypeDef *timer)
{
return timer->TOP;
}
/***************************************************************************//**
* @brief
* Set top value for timer.
*
* @param[in] timer
* Pointer to TIMER peripheral register block.
*
* @param[in] val
* Value to set in top value register.
******************************************************************************/
__STATIC_INLINE void TIMER_TopSet(TIMER_TypeDef *timer, uint32_t val)
{
EFM_ASSERT(val <= TIMER_MaxCount(timer));
#if defined (TIMER_EN_EN)
EFM_ASSERT(timer->EN & TIMER_EN_EN);
#endif
timer->TOP = val;
}
#if defined(TIMER_DTLOCK_LOCKKEY_UNLOCK)
/***************************************************************************//**
* @brief
* Unlock TIMER to enable writing to locked registers again.
*
* @param[in] timer
* Pointer to TIMER peripheral register block.
******************************************************************************/
__STATIC_INLINE void TIMER_Unlock(TIMER_TypeDef *timer)
{
EFM_ASSERT(TIMER0 == timer);
#if defined (TIMER_EN_EN)
EFM_ASSERT(timer->EN & TIMER_EN_EN);
#endif
timer->DTLOCK = TIMER_DTLOCK_LOCKKEY_UNLOCK;
}
#endif
/** @} (end addtogroup TIMER) */
/** @} (end addtogroup emlib) */
#ifdef __cplusplus
}
#endif
#endif /* defined(TIMER_COUNT) && (TIMER_COUNT > 0) */
#endif /* EM_TIMER_H */
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