System RTC#

sl_sysrtc_group_number_t#

sl_sysrtc_group_number_t

Enumeration to represent SYSRTC group numbers.

This enumeration defines the group numbers for the SYSRTC module. It includes options for group 0, group 1, and a validation member.

sl_sysrtc_channel_number_t#

sl_sysrtc_channel_number_t

Enumeration to represent SYSRTC channel numbers.

This enumeration defines the channel numbers for the SYSRTC module. It includes options for channel 0, channel 1, and a validation member.

sl_clock_sources_t#

typedef rsi_sysrtc_clk_inp_t sl_clock_sources_t

clock sources enum

sl_sysrtc_config_t#

typedef rsi_sysrtc_config_t sl_sysrtc_config_t

SYSRTC config structure.

sl_sysrtc_group_config_t#

typedef rsi_sysrtc_group_config_t sl_sysrtc_group_config_t

SYSRTC group config structure.

sl_sysrtc_group_compare_channel_action_config_t#

typedef rsi_sysrtc_group_channel_compare_config_t sl_sysrtc_group_compare_channel_action_config_t

renaming group compare channel config structure

sl_sysrtc_group_capture_channel_input_edge_config_t#

typedef rsi_sysrtc_group_channel_capture_config_t sl_sysrtc_group_capture_channel_input_edge_config_t

renaming group capture channel config structure

sl_sysrtc_callback_t#

typedef void(* sl_sysrtc_callback_t) (void *callback_flag) )(void *callback_flag)

Typedef for the SYSRTC callback function.

This typedef defines the function signature for the callback function used by the SYSRTC. The callback function is called when a specific SYSRTC event occurs.

sl_si91x_sysrtc_init#

sl_status_t sl_si91x_sysrtc_init (const sl_sysrtc_config_t * config_ptr)

To initialize SYSRTC and enable the peripheral.

This API initializes the SYSRTC and configures it to run during debug halt, based on user input.

• Pre-condition:

  • sl_si91x_sysrtc_configure_clock must be called before this function.

Returns

• sl_status_t Status code indicating the result:

  • SL_STATUS_OK - Success, SYSRTC initialized properly.

  • SL_STATUS_NULL_POINTER - The parameter is a null pointer.

For more information on status codes, see SL STATUS DOCUMENTATION.

sl_si91x_sysrtc_configure_clock#

sl_status_t sl_si91x_sysrtc_configure_clock (sl_sysrtc_clock_config_t * clk_ptr)

To configure the SYSRTC input clock source frequency.

This API configures the clock source for the SYSRTC. It allows the selection of 32 KHz RC, 32 KHz RO, or 1 KHz RO clock sources based on user input. For using the 1kHz clock source, pass the division factor value as '16'; otherwise, pass '0'.

Returns

• sl_status_t Status code indicating the result:

  • SL_STATUS_OK - Success, timer clock-source parameters configured properly.

  • SL_STATUS_INVALID_PARAMETER - Clock source parameter has an invalid value.

  • SL_STATUS_NULL_POINTER - The parameter is a null pointer.

For more information on status codes, see SL STATUS DOCUMENTATION.

sl_si91x_sysrtc_configure_group#

sl_status_t sl_si91x_sysrtc_configure_group (sl_sysrtc_group_number_t group_number, sl_sysrtc_group_config_t const * config_ptr)

To configure the SYSRTC groups of compare and capture channels.

Configures the specified group number and enables its compare and capture channels. Additionally, sets up match-out actions for the corresponding compare channels and input events for the capture channels.

• Pre-conditions:

  • sl_si91x_sysrtc_configure_clock must be called before this function.

  • sl_si91x_sysrtc_init must be called before this function.

Returns

• sl_status_t Status code indicating the result:

  • SL_STATUS_OK - Success, parameters configured properly.

  • SL_STATUS_INVALID_PARAMETER - Counter direction parameter has an invalid value.

  • SL_STATUS_NULL_POINTER - The parameter is a null pointer.

For more information on status codes, see SL STATUS DOCUMENTATION.

sl_si91x_sysrtc_register_callback#

sl_status_t sl_si91x_sysrtc_register_callback (sl_sysrtc_callback_t on_sysrtc_callback, void * callback_flag_value, sl_sysrtc_group_number_t group_number, sl_sysrtc_interrupt_enables_t * interrupt_enable_ptr)

To register the callback for the timer interrupt.

Registers the callback for the timer interrupt and enables the corresponding interrupts based on the selected interrupt flags.

• Pre-conditions:

  • sl_si91x_sysrtc_init must be called before this function.

  • sl_si91x_sysrtc_configure_clock must be called before this function.

  • sl_si91x_sysrtc_configure_group() must be called with the respective interrupt channel enabled.

  • sl_si91x_sysrtc_unregister_callback() must be called if already registered for any interrupt.

Returns

• sl_status_t Status code indicating the result:

  • SL_STATUS_OK - Successfully registered timer timeout callback.

  • SL_STATUS_BUSY - The callback is already registered; unregister the previous callback before registering a new one.

  • SL_STATUS_INVALID_PARAMETER - The group_number parameter has an invalid value.

  • SL_STATUS_NULL_POINTER - The interrupt_enable_ptr parameter is a null pointer.

For more information on status codes, see SL STATUS DOCUMENTATION.

sl_si91x_sysrtc_unregister_callback#

sl_status_t sl_si91x_sysrtc_unregister_callback (sl_sysrtc_group_number_t group_number, sl_sysrtc_interrupt_enables_t * interrupt_enabled_handle)

To unregister the timer interrupt callback.

Unregisters the timer interrupt callback and disables interrupts according to the selected interrupt flag.

• Pre-conditions:

  • sl_si91x_sysrtc_register_callback() must be called first to register a particular interrupt flag.

Returns

• sl_status_t Status code indicating the result:

  • SL_STATUS_OK - Successfully unregistered timer interrupt callback.

  • SL_STATUS_INVALID_PARAMETER - The group_number parameter has an invalid value.

  • SL_STATUS_NULL_POINTER - The interrupt_enabled_handle parameter is a null pointer.

For more information on status codes, see SL STATUS DOCUMENTATION.

sl_si91x_sysrtc_set_compare_value#

sl_status_t sl_si91x_sysrtc_set_compare_value (sl_sysrtc_group_number_t group_number, sl_sysrtc_channel_number_t channel, uint32_t compare_value)

To set the SYSRTC compare value for the selected channel of the given group.

This API sets the SYSRTC compare register value for the specified channel within the given group.

• Pre-conditions:

  • First enable the compare channel of the respective group through sl_si91x_sysrtc_configure_group.

Returns

• sl_status_t Status code indicating the result:

  • SL_STATUS_OK - Success, parameters configured properly.

  • SL_STATUS_INVALID_PARAMETER - The group_number or channel parameter has an invalid value.

For more information on status codes, see SL STATUS DOCUMENTATION.

sl_si91x_sysrtc_get_compare_value#

sl_status_t sl_si91x_sysrtc_get_compare_value (sl_sysrtc_group_number_t group_number, sl_sysrtc_channel_number_t channel, uint32_t * compare_value)

To get the SYSRTC current compare register value for the selected channel of the selected group.

This API retrieves the current compare register value for the specified channel within the given group.

Returns

• sl_status_t Status code indicating the result:

  • SL_STATUS_OK - Success, parameters configured properly.

  • SL_STATUS_INVALID_PARAMETER - The group_number or channel parameter has an invalid value.

  • SL_STATUS_NULL_POINTER - The compare_value parameter is a null pointer.

For more information on status codes, see SL STATUS DOCUMENTATION.

sl_si91x_sysrtc_sets_register_capture_input#

sl_status_t sl_si91x_sysrtc_sets_register_capture_input (sl_sysrtc_group_number_t group_number)

To set register-input for the capture channel of the selected group of SYSRTC.

This API sets the register-input for the capture channel of the selected SYSRTC group, configuring the SYSRTC Input (Capture) from the register.

• Pre-conditions:

  • First, enable and configure the capture channel of the respective group through sl_si91x_sysrtc_configure_group.

  • Disable GPIO input through sl_si91x_sysrtc_enable_input_output_gpio by passing false.

Returns

• sl_status_t Status code indicating the result:

  • SL_STATUS_OK - Success, parameters configured properly.

  • SL_STATUS_INVALID_PARAMETER - The group_number parameter has an invalid value.

For more information on status codes, see SL STATUS DOCUMENTATION.

sl_si91x_sysrtc_set_gpio_as_capture_input#

sl_status_t sl_si91x_sysrtc_set_gpio_as_capture_input (sl_sysrtc_group_number_t group_number)

To configure input pins for the SYSRTC capture channel of the selected group.

Configures GPIO-0 and GPIO-1 as input pins for the capture channel of group 0 and group 1, respectively. Sets pins mode, mux, and direction.

• Pre-conditions:

  • First, enable and configure the capture channel of the respective group through sl_si91x_sysrtc_configure_group.

  • Enable GPIO IO through sl_si91x_sysrtc_enable_input_output_gpio by passing true.

Returns

• sl_status_t Status code indicating the result:

  • SL_STATUS_OK - Success, parameters configured properly.

  • SL_STATUS_INVALID_PARAMETER - The group_number parameter has an invalid value.

For more information on status codes, see SL STATUS DOCUMENTATION.

sl_si91x_sysrtc_set_compare_output_gpio#

sl_status_t sl_si91x_sysrtc_set_compare_output_gpio (sl_sysrtc_group_number_t group_number, sl_sysrtc_channel_number_t channel)

To configure the output pins of the selected compare channel of the given group.

Configures GPIO-3 and GPIO-4 as output pins for compare channels 0 and 1 of group 0, respectively. Configures GPIO-1 and GPIO-2 as output pins for compare channels 0 and 1 of group 1, respectively. Sets pins mode, mux, and direction, and enables the input buffer for the pins.

• Pre-conditions:

  • First, enable and configure the output action of the compare channel of the respective group through sl_si91x_sysrtc_configure_group.

Returns

• sl_status_t Status code indicating the result:

  • SL_STATUS_OK - Success, parameters configured properly.

  • SL_STATUS_INVALID_PARAMETER - The group_number or channel parameter has an invalid value.

For more information on status codes, see SL STATUS DOCUMENTATION.

sl_si91x_sysrtc_get_count#

sl_status_t sl_si91x_sysrtc_get_count (uint32_t * count_value)

To get the SYSRTC current counter register value.

Updates the current count of the timer to the count_value input parameter.

Returns

• sl_status_t Status code indicating the result:

  • SL_STATUS_OK - Success, count value retrieved properly.

  • SL_STATUS_NULL_POINTER - The count_value parameter is a null pointer.

For more information on status codes, see SL STATUS DOCUMENTATION.

sl_si91x_sysrtc_get_capture_value#

sl_status_t sl_si91x_sysrtc_get_capture_value (sl_sysrtc_group_number_t group_number, uint32_t * capture_value)

To get the SYSRTC capture register value of a given group.

Updates the capture count value of the timer to the capture_value input parameter.

Returns

• sl_status_t Status code indicating the result:

  • SL_STATUS_OK - Success, parameters configured properly.

  • SL_STATUS_INVALID_PARAMETER - The group_number parameter has an invalid value.

  • SL_STATUS_NULL_POINTER - The capture_value parameter is a null pointer.

For more information on status codes, see SL STATUS DOCUMENTATION.

sl_si91x_sysrtc_get_compare_output#

sl_status_t sl_si91x_sysrtc_get_compare_output (sl_sysrtc_group_number_t group_number, sl_sysrtc_channel_number_t channel, uint32_t * compare_output_bit)

To read the SYSRTC compare channel output bit value of a given group.

Updates the bit value to the compare_output_bit input parameter.

Returns

• sl_status_t Status code indicating the result:

  • SL_STATUS_OK - Success, parameters configured properly.

  • SL_STATUS_INVALID_PARAMETER - The group_number or channel parameter has an invalid value.

  • SL_STATUS_NULL_POINTER - The compare_output_bit parameter is a null pointer.

For more information on status codes, see SL STATUS DOCUMENTATION.

sl_si91x_sysrtc_is_running#

sl_status_t sl_si91x_sysrtc_is_running (boolean_t * running_status)

To get the SYSRTC running status.

Updates the running_status input parameter to 'true' if SYSRTC is running; otherwise, it updates the parameter to 'false'.

Returns

• sl_status_t Status code indicating the result:

  • SL_STATUS_OK - Success, parameters configured properly.

  • SL_STATUS_NULL_POINTER - The running_status parameter is a null pointer.

For more information on status codes, see SL STATUS DOCUMENTATION.

sl_si91x_sysrtc_is_locked#

sl_status_t sl_si91x_sysrtc_is_locked (boolean_t * lock_status)

To get the SYSRTC lock status.

Updates the lock_status input parameter to 'true' if SYSRTC is locked or to 'false' if it is unlocked.

Returns

• sl_status_t Status code indicating the result:

  • SL_STATUS_OK - Success, parameters configured properly.

  • SL_STATUS_NULL_POINTER - The lock_status parameter is a null pointer.

For more information on status codes, see SL STATUS DOCUMENTATION.

sl_si91x_sysrtc_enable_input_output_gpio#

void sl_si91x_sysrtc_enable_input_output_gpio (bool is_gpio_enabled)

To set the SYSRTC input/output mode for the capture and compare channels.

If "is_gpio_enabled" is set to "true", the input to capture and output from compare channels will be through GPIO. If set to "false", the input to capture and output from compare channels can be set through registers.

sl_si91x_sysrtc_start#

__STATIC_INLINE void sl_si91x_sysrtc_start (void )

To start the SYSRTC counter.

This API sends a start command to the SYSRTC peripheral and waits until the command has been executed.

• Pre-conditions:

  • sl_si91x_sysrtc_init must be called.

  • sl_si91x_sysrtc_configure_clock() must be called with software trigger disabled.

  • sl_si91x_sysrtc_configure_group() must be called with the respective interrupt channel enabled.

  • sl_si91x_sysrtc_register_callback must be called with the respective interrupt enabled.

  • sl_si91x_sysrtc_set_count must be called.

Note

• 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 rsi_sysrtc_wait_sync() function is used to wait for the start command to be executed.

sl_si91x_sysrtc_stop#

__STATIC_INLINE void sl_si91x_sysrtc_stop (void )

To stop the SYSRTC counter.

This function sends a stop command to the SYSRTC peripheral and waits until the command is executed.

Note

• This function requires the SYSRTC to be enabled.

sl_si91x_sysrtc_reset#

__STATIC_INLINE void sl_si91x_sysrtc_reset (void )

To reset the SYSRTC to its default state.

This function restores the SYSRTC peripheral to its reset state.

Note

• This function requires the SYSRTC to be enabled.

sl_si91x_sysrtc_lock#

__STATIC_INLINE void sl_si91x_sysrtc_lock (void )

To lock the SYSRTC registers.

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

sl_si91x_sysrtc_unlock#

__STATIC_INLINE void sl_si91x_sysrtc_unlock (void )

To unlock the SYSRTC registers.

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

• Pre-condition:

  • sl_si91x_sysrtc_lock must be called before this function.

sl_si91x_sysrtc_set_count#

__STATIC_INLINE void sl_si91x_sysrtc_set_count (uint32_t value)

To set the SYSRTC counter register value.

This API is used to change the count of SYSRTC when it is stopped. After calling this API, the user should start SYSRTC.

• Pre-condition:

  • sl_si91x_sysrtc_stop must be called before this function.

sl_si91x_sysrtc_get_version#

sl_sysrtc_version_t sl_si91x_sysrtc_get_version (void )

To get the SYSRTC version.

Retrieve the API version of SYSRTC.

Returns

• sl_sysrtc_version_t Structure containing the version information.

sl_si91x_sysrtc_deinit#

void sl_si91x_sysrtc_deinit (void )

To de-initialize the SYSRTC by disabling its clock.

This API de-initializes the SYSRTC by disabling its clock. Unregisters the SYSRTC callback and disables all interrupts.