Description

System Real Time Counter (SYSRTC) Peripheral API.

This module contains functions to control the SYSRTC peripheral of Silicon Labs 32-bit MCUs and SoCs. The SYSRTC ensures timekeeping in low energy modes.

Data Structures
struct	sl_sysrtc_config_t
	SYSRTC configuration structure.

struct	sl_sysrtc_group_channel_compare_config_t
	Compare channel configuration structure.

struct	sl_sysrtc_group_channel_capture_config_t
	Capture channel configuration structure.

struct	sl_sysrtc_group_config_t
	Group configuration structure.

Functions
void	sl_sysrtc_init (const sl_sysrtc_config_t *p_config)
	Initializes SYSRTC module.

void	sl_sysrtc_enable (void)
	Enables SYSRTC counting.

void	sl_sysrtc_disable (void)
	Disables SYSRTC counting.

void	sl_sysrtc_reset (void)
	Restores SYSRTC to its reset state.

void	sl_sysrtc_init_group (uint8_t group_number, sl_sysrtc_group_config_t const *p_group_config)
	Initializes the selected SYSRTC group.

void	sl_sysrtc_enable_group_interrupts (uint8_t group_number, uint32_t flags)
	Enables one or more SYSRTC interrupts for the given group.

void	sl_sysrtc_disable_group_interrupts (uint8_t group_number, uint32_t flags)
	Disables one or more SYSRTC interrupts for the given group.

void	sl_sysrtc_clear_group_interrupts (uint8_t group_number, uint32_t flags)
	Clears one or more pending SYSRTC interrupts for the given group.

uint32_t	sl_sysrtc_get_group_interrupts (uint8_t group_number)
	Gets pending SYSRTC interrupt flags for the given group.

uint32_t	sl_sysrtc_get_group_enabled_interrupts (uint8_t group_number)
	Gets enabled and pending SYSRTC interrupt flags.

void	sl_sysrtc_set_group_interrupts (uint8_t group_number, uint32_t flags)
	Sets one or more pending SYSRTC interrupts for the given group from Software.

uint32_t	sl_sysrtc_get_group_compare_channel_value (uint8_t group_number, uint8_t channel)
	Gets SYSRTC compare register value for selected channel of given group.

void	sl_sysrtc_set_group_compare_channel_value (uint8_t group_number, uint8_t channel, uint32_t value)
	Sets SYSRTC compare register value for selected channel of given group.

uint32_t	sl_sysrtc_get_group_capture_channel_value (uint8_t group_number)
	Gets SYSRTC input capture register value for selected channel of given group.

void	sl_sysrtc_wait_sync (void)
	Waits for the SYSRTC to complete all synchronization of register changes and commands.

void	sl_sysrtc_wait_ready (void)
	Waits for the SYSRTC to complete reseting or disabling procedure.

void	sl_sysrtc_start (void)
	Starts SYSRTC counter.

void	sl_sysrtc_stop (void)
	Stops the SYSRTC counter.

uint32_t	sl_sysrtc_get_status (void)
	Gets SYSRTC STATUS register value.

void	sl_sysrtc_lock (void)
	Locks SYSRTC registers.

void	sl_sysrtc_unlock (void)
	Unlocks SYSRTC registers.

uint32_t	sl_sysrtc_get_counter (void)
	Gets SYSRTC counter value.

void	sl_sysrtc_set_counter (uint32_t value)
	Sets the SYSRTC counter value.

Macros
#define	SYSRTC_GROUP_MIN_CHANNEL_COMPARE 1u
	Minimum compare channels for SYSRTC group.

#define	SYSRTC_GROUP_MAX_CHANNEL_COMPARE 2u
	Maximum compare channels for SYSRTC group.

#define	SYSRTC_GROUP_MIN_CHANNEL_CAPTURE 0u
	Minimum capture channels for SYSRTC group.

#define	SYSRTC_GROUP_MAX_CHANNEL_CAPTURE 1u
	Maximum capture channels for SYSRTC group.

#define	SYSRTC_GROUP_NUMBER 1u
	Sysrtc group number.

#define	SYSRTC_GROUP_VALID (group) ((unsigned)(group) < SYSRTC_GROUP_NUMBER )
	Validation of valid SYSRTC group for assert statements.

#define	SYSRTC_CONFIG_DEFAULT
	Suggested default values for SYSRTC configuration structure.

#define	SYSRTC_GROUP_CHANNEL_COMPARE_CONFIG_DEFAULT
	Suggested default values for compare channel configuration structure.

#define	SYSRTC_GROUP_CHANNEL_CAPTURE_CONFIG_DEFAULT
	Suggested default values for capture channel configuration structure.

#define	SYSRTC_GROUP_CONFIG_DEFAULT
	Suggested default values for SYSRTC group configuration structure.

Enumerations
enum	sl_sysrtc_capture_edge_t { SL_SYSRTC_CAPTURE_EDGE_RISING = 0, SL_SYSRTC_CAPTURE_EDGE_FALLING , SL_SYSRTC_CAPTURE_EDGE_BOTH }
	Capture input edge select.

enum	sl_sysrtc_compare_match_out_action_t { SL_SYSRTC_COMPARE_MATCH_OUT_ACTION_CLEAR = 0, SL_SYSRTC_COMPARE_MATCH_OUT_ACTION_SET , SL_SYSRTC_COMPARE_MATCH_OUT_ACTION_PULSE , SL_SYSRTC_COMPARE_MATCH_OUT_ACTION_TOGGLE , SL_SYSRTC_COMPARE_MATCH_OUT_ACTION_CMPIF }
	Compare match output action mode.

Function Documentation

◆ sl_sysrtc_init()

void sl_sysrtc_init ( const sl_sysrtc_config_t * p_config )

Initializes SYSRTC module.

Note that the compare values must be set separately with ( sl_sysrtc_set_group_compare_channel_value() ), which should probably be done prior to the use of this function if configuring the SYSRTC to start when initialization is completed.

Parameters

[in] p_config A pointer to the SYSRTC initialization structure variable.

◆ sl_sysrtc_enable()

void sl_sysrtc_enable ( void )

Enables SYSRTC counting.

◆ sl_sysrtc_disable()

void sl_sysrtc_disable ( void )

Disables SYSRTC counting.

◆ sl_sysrtc_reset()

void sl_sysrtc_reset ( void )

Restores SYSRTC to its reset state.

◆ sl_sysrtc_init_group()

void sl_sysrtc_init_group	(	uint8_t	`group_number,`
		sl_sysrtc_group_config_t const *	`p_group_config`
	)

Initializes the selected SYSRTC group.

Parameters

[in]	`group_number`	SYSRTC group number to use.
[in]	`p_group_config`	Pointer to group configuration structure variable.

◆ sl_sysrtc_enable_group_interrupts()

void sl_sysrtc_enable_group_interrupts	(	uint8_t	`group_number,`
		uint32_t	`flags`
	)

Enables one or more SYSRTC interrupts for the given group.

Note: Depending on the use, a pending interrupt may already be set prior to enabling the interrupt. To ignore a pending interrupt, consider using sl_sysrtc_clear_group_interrupts() prior to enabling the interrupt.

Parameters

[in]	`group_number`	SYSRTC group number to use.
[in]	`flags`	SYSRTC interrupt sources to enable. Use a set of interrupt flags OR-ed together to set multiple interrupt sources for the given SYSRTC group.

◆ sl_sysrtc_disable_group_interrupts()

void sl_sysrtc_disable_group_interrupts	(	uint8_t	`group_number,`
		uint32_t	`flags`
	)

Disables one or more SYSRTC interrupts for the given group.

Parameters

[in]	`group_number`	SYSRTC group number to use.
[in]	`flags`	SYSRTC interrupt sources to disable. Use a set of interrupt flags OR-ed together to disable multiple interrupt sources for the given SYSRTC group.

◆ sl_sysrtc_clear_group_interrupts()

void sl_sysrtc_clear_group_interrupts	(	uint8_t	`group_number,`
		uint32_t	`flags`
	)

Clears one or more pending SYSRTC interrupts for the given group.

Parameters

[in]	`group_number`	SYSRTC group number to use.
[in]	`flags`	SYSRTC interrupt sources to clear. Use a set of interrupt flags OR-ed together to clear multiple interrupt sources for the given SYSRTC group.

◆ sl_sysrtc_get_group_interrupts()

uint32_t sl_sysrtc_get_group_interrupts ( uint8_t group_number )

Gets pending SYSRTC interrupt flags for the given group.

Note: Event bits are not cleared by using this function.

Parameters

[in] group_number SYSRTC group number to use.

Returns: Pending SYSRTC interrupt sources. Returns a set of interrupt flags OR-ed together for multiple interrupt sources in the SYSRTC group.

◆ sl_sysrtc_get_group_enabled_interrupts()

uint32_t sl_sysrtc_get_group_enabled_interrupts ( uint8_t group_number )

Gets enabled and pending SYSRTC interrupt flags.

Useful for handling more interrupt sources in the same interrupt handler.

Note: Interrupt flags are not cleared by using this function.

Parameters

[in] group_number SYSRTC group number to use.

Returns

Pending and enabled SYSRTC interrupt sources. The return value is the bitwise AND of

the enabled interrupt sources in SYSRTC_GRPx_IEN and
the pending interrupt flags SYSRTC_GRPx_IF.

◆ sl_sysrtc_set_group_interrupts()

void sl_sysrtc_set_group_interrupts	(	uint8_t	`group_number,`
		uint32_t	`flags`
	)

Sets one or more pending SYSRTC interrupts for the given group from Software.

Parameters

[in]	`group_number`	SYSRTC group number to use.
[in]	`flags`	SYSRTC interrupt sources to set to pending. Use a set of interrupt flags OR-ed together to set multiple interrupt sources for the SYSRTC group.

◆ sl_sysrtc_get_group_compare_channel_value()

uint32_t sl_sysrtc_get_group_compare_channel_value	(	uint8_t	`group_number,`
		uint8_t	`channel`
	)

Gets SYSRTC compare register value for selected channel of given group.

Parameters

[in]	`group_number`	SYSRTC group number to use.
[in]	`channel`	Channel selector.

Returns: Compare register value.

◆ sl_sysrtc_set_group_compare_channel_value()

void sl_sysrtc_set_group_compare_channel_value	(	uint8_t	`group_number,`
		uint8_t	`channel,`
		uint32_t	`value`
	)

Sets SYSRTC compare register value for selected channel of given group.

Parameters

[in]	`group_number`	SYSRTC group number to use.
[in]	`channel`	Channel selector.
[in]	`value`	Compare register value.

◆ sl_sysrtc_get_group_capture_channel_value()

uint32_t sl_sysrtc_get_group_capture_channel_value ( uint8_t group_number )

Gets SYSRTC input capture register value for selected channel of given group.

Gets SYSRTC input capture register value for capture channel of given group.

Parameters

[in] group_number SYSRTC group number to use.

Returns: Capture register value.

◆ sl_sysrtc_wait_sync()

void sl_sysrtc_wait_sync ( void )

inline

Waits for the SYSRTC to complete all synchronization of register changes and commands.

◆ sl_sysrtc_wait_ready()

void sl_sysrtc_wait_ready ( void )

inline

Waits for the SYSRTC to complete reseting or disabling procedure.

◆ sl_sysrtc_start()

void sl_sysrtc_start ( void )

inline

Starts SYSRTC counter.

This function will send a start command to the SYSRTC peripheral. The SYSRTC peripheral will use some LF clock ticks before the command is executed. The sl_sysrtc_wait_sync() function can be used to wait for the start command to be executed.

Note: This function requires the SYSRTC to be enabled.

◆ sl_sysrtc_stop()

void sl_sysrtc_stop ( void )

inline

Stops the SYSRTC counter.

This function will send a stop command to the SYSRTC peripheral. The SYSRTC peripheral will use some LF clock ticks before the command is executed. The sl_sysrtc_wait_sync() function can be used to wait for the stop command to be executed.

Note: This function requires the SYSRTC to be enabled.

◆ sl_sysrtc_get_status()

uint32_t sl_sysrtc_get_status ( void )

inline

Gets SYSRTC STATUS register value.

Returns: Current STATUS register value.

◆ sl_sysrtc_lock()

void sl_sysrtc_lock ( void )

inline

Locks SYSRTC registers.

Note: When SYSRTC registers are locked SYSRTC_EN, SYSRTC_CFG, SYSRTC_CMD, SYSRTC_SWRST, SYSRTC_CNT and SYSRTC_TOPCNT registers cannot be written to.

◆ sl_sysrtc_unlock()

void sl_sysrtc_unlock ( void )

inline

Unlocks SYSRTC registers.

Note: When SYSRTC registers are locked SYSRTC_EN, SYSRTC_CFG, SYSRTC_CMD, SYSRTC_SWRST, SYSRTC_CNT and SYSRTC_TOPCNT registers cannot be written to.

◆ sl_sysrtc_get_counter()

uint32_t sl_sysrtc_get_counter ( void )

inline

Gets SYSRTC counter value.

Returns: Current SYSRTC counter value.

◆ sl_sysrtc_set_counter()

void sl_sysrtc_set_counter ( uint32_t value )

inline

Sets the SYSRTC counter value.

Parameters

[in] value The new SYSRTC counter value.

Macro Definition Documentation

◆ SYSRTC_GROUP_MIN_CHANNEL_COMPARE

#define SYSRTC_GROUP_MIN_CHANNEL_COMPARE 1u

Minimum compare channels for SYSRTC group.

◆ SYSRTC_GROUP_MAX_CHANNEL_COMPARE

#define SYSRTC_GROUP_MAX_CHANNEL_COMPARE 2u

Maximum compare channels for SYSRTC group.

◆ SYSRTC_GROUP_MIN_CHANNEL_CAPTURE

#define SYSRTC_GROUP_MIN_CHANNEL_CAPTURE 0u

Minimum capture channels for SYSRTC group.

◆ SYSRTC_GROUP_MAX_CHANNEL_CAPTURE

#define SYSRTC_GROUP_MAX_CHANNEL_CAPTURE 1u

Maximum capture channels for SYSRTC group.

◆ SYSRTC_GROUP_NUMBER

#define SYSRTC_GROUP_NUMBER 1u

Sysrtc group number.

◆ SYSRTC_GROUP_VALID

#define SYSRTC_GROUP_VALID ( group ) ((unsigned)(group) < SYSRTC_GROUP_NUMBER )

Validation of valid SYSRTC group for assert statements.

◆ SYSRTC_CONFIG_DEFAULT

#define SYSRTC_CONFIG_DEFAULT

Value:

         {                                                  \
        
         false,
         
          /* Disable updating during debug halt. */
         
         \
        
         }

Suggested default values for SYSRTC configuration structure.

◆ SYSRTC_GROUP_CHANNEL_COMPARE_CONFIG_DEFAULT

#define SYSRTC_GROUP_CHANNEL_COMPARE_CONFIG_DEFAULT

Value:

         {                                                 \
        
         SL_SYSRTC_COMPARE_MATCH_OUT_ACTION_PULSE        \
        
         }

Suggested default values for compare channel configuration structure.

◆ SYSRTC_GROUP_CHANNEL_CAPTURE_CONFIG_DEFAULT

#define SYSRTC_GROUP_CHANNEL_CAPTURE_CONFIG_DEFAULT

Value:

         {                                                 \
        
         SL_SYSRTC_CAPTURE_EDGE_RISING                   \
        
         }

Suggested default values for capture channel configuration structure.

◆ SYSRTC_GROUP_CONFIG_DEFAULT

#define SYSRTC_GROUP_CONFIG_DEFAULT

Value:

         {                                                                          \
        
         true,
         
          /* Enable compare channel 0. */
         
         \
        
         false,
         
          /* Disable compare channel 1. */
         
         \
        
         false,
         
          /* Disable capture channel 0. */
         
         \
        
         NULL,
         
          /* NULL Pointer to configuration structure for compare channel 0*/
         
         \
        
         NULL,
         
          /* NULL Pointer to configuration structure for compare channel 1*/
         
         \
        
         NULL
         
          /* NULL Pointer to configuration structure for capture channel 0*/
         
         \
        
         }

Suggested default values for SYSRTC group configuration structure.

Enumeration Type Documentation

◆ sl_sysrtc_capture_edge_t

enum sl_sysrtc_capture_edge_t

Capture input edge select.

Enumerator
SL_SYSRTC_CAPTURE_EDGE_RISING	Rising edges detected.
SL_SYSRTC_CAPTURE_EDGE_FALLING	Falling edges detected.
SL_SYSRTC_CAPTURE_EDGE_BOTH	Both edges detected.

◆ sl_sysrtc_compare_match_out_action_t

enum sl_sysrtc_compare_match_out_action_t

Compare match output action mode.

Enumerator
SL_SYSRTC_COMPARE_MATCH_OUT_ACTION_CLEAR	Clear output.
SL_SYSRTC_COMPARE_MATCH_OUT_ACTION_SET	Set output.
SL_SYSRTC_COMPARE_MATCH_OUT_ACTION_PULSE	Generate a pulse.
SL_SYSRTC_COMPARE_MATCH_OUT_ACTION_TOGGLE	Toggle output.
SL_SYSRTC_COMPARE_MATCH_OUT_ACTION_CMPIF	Export CMPIF.

SYSRTC - System Real Time Counter

Description

Data Structures

Functions

Macros

Enumerations

Function Documentation

◆ sl_sysrtc_init()

◆ sl_sysrtc_enable()

◆ sl_sysrtc_disable()

◆ sl_sysrtc_reset()

◆ sl_sysrtc_init_group()

◆ sl_sysrtc_enable_group_interrupts()

◆ sl_sysrtc_disable_group_interrupts()

◆ sl_sysrtc_clear_group_interrupts()

◆ sl_sysrtc_get_group_interrupts()

◆ sl_sysrtc_get_group_enabled_interrupts()

◆ sl_sysrtc_set_group_interrupts()

◆ sl_sysrtc_get_group_compare_channel_value()

◆ sl_sysrtc_set_group_compare_channel_value()

◆ sl_sysrtc_get_group_capture_channel_value()

◆ sl_sysrtc_wait_sync()

◆ sl_sysrtc_wait_ready()

◆ sl_sysrtc_start()

◆ sl_sysrtc_stop()

◆ sl_sysrtc_get_status()

◆ sl_sysrtc_lock()

◆ sl_sysrtc_unlock()

◆ sl_sysrtc_get_counter()

◆ sl_sysrtc_set_counter()

Macro Definition Documentation

◆ SYSRTC_GROUP_MIN_CHANNEL_COMPARE

◆ SYSRTC_GROUP_MAX_CHANNEL_COMPARE

◆ SYSRTC_GROUP_MIN_CHANNEL_CAPTURE

◆ SYSRTC_GROUP_MAX_CHANNEL_CAPTURE

◆ SYSRTC_GROUP_NUMBER

◆ SYSRTC_GROUP_VALID

◆ SYSRTC_CONFIG_DEFAULT

◆ SYSRTC_GROUP_CHANNEL_COMPARE_CONFIG_DEFAULT

◆ SYSRTC_GROUP_CHANNEL_CAPTURE_CONFIG_DEFAULT

◆ SYSRTC_GROUP_CONFIG_DEFAULT

Enumeration Type Documentation

◆ sl_sysrtc_capture_edge_t

◆ sl_sysrtc_compare_match_out_action_t