System

System.

Modules

sl_bt_evt_system_boot
Indicates that the device has started and the radio is ready.
 
sl_bt_evt_system_error
Indicates that an error has occurred.
 
sl_bt_evt_system_hardware_error
Indicates that a hardware-related error has occurred.
 
sl_bt_evt_system_external_signal
Indicates that the external signals have been received.
 
sl_bt_evt_system_awake
Indicates that the device is awake and no longer in sleep mode.
 
sl_bt_evt_system_soft_timer
Indicates that a soft timer has lapsed.
 

Enumerations

enum  system_boot_mode_t { system_boot_mode_normal = 0x0, system_boot_mode_uart_dfu = 0x1, system_boot_mode_ota_dfu = 0x2 }
 System boot mode.
 
enum  system_linklayer_config_key_t {
  system_linklayer_config_key_halt = 0x1, system_linklayer_config_key_priority_range = 0x2, system_linklayer_config_key_scan_channels = 0x3, system_linklayer_config_key_set_flags = 0x4,
  system_linklayer_config_key_clr_flags = 0x5, system_linklayer_config_key_set_afh_interval = 0x7, system_linklayer_config_key_set_priority_table = 0x9
}
 Link Layer Configuration Keys.
 

Functions

sl_status_t sl_bt_system_hello ()
 
void sl_bt_system_reset (uint8_t dfu)
 
sl_status_t sl_bt_system_halt (uint8_t halt)
 
sl_status_t sl_bt_system_linklayer_configure (uint8_t key, size_t data_len, const uint8_t *data)
 
sl_status_t sl_bt_system_set_max_tx_power (int16_t power, int16_t *set_power)
 
sl_status_t sl_bt_system_set_identity_address (bd_addr address, uint8_t type)
 
sl_status_t sl_bt_system_get_identity_address (bd_addr *address, uint8_t *type)
 
sl_status_t sl_bt_system_get_random_data (uint8_t length, size_t max_data_size, size_t *data_len, uint8_t *data)
 
sl_status_t sl_bt_system_data_buffer_write (size_t data_len, const uint8_t *data)
 
sl_status_t sl_bt_system_data_buffer_clear ()
 
sl_status_t sl_bt_system_get_counters (uint8_t reset, uint16_t *tx_packets, uint16_t *rx_packets, uint16_t *crc_errors, uint16_t *failures)
 
sl_status_t sl_bt_system_set_soft_timer (uint32_t time, uint8_t handle, uint8_t single_shot)
 
sl_status_t sl_bt_system_set_lazy_soft_timer (uint32_t time, uint32_t slack, uint8_t handle, uint8_t single_shot)
 

Detailed Description

System.

Commands and events in this class can be used to access and query the local device.

Enumeration Type Documentation

◆ system_boot_mode_t

enum system_boot_mode_t

System boot mode.

Enumerator
system_boot_mode_normal 

(0x0) Boot to normal mode

system_boot_mode_uart_dfu 

(0x1) Boot to UART DFU mode

system_boot_mode_ota_dfu 

(0x2) Boot to OTA DFU mode

◆ system_linklayer_config_key_t

enum system_linklayer_config_key_t

Link Layer Configuration Keys.

Enumerator
system_linklayer_config_key_halt 

(0x1) Same as system_halt command, value-0 Stop Radio 1- Start Radio

system_linklayer_config_key_priority_range 

(0x2) Sets the RAIL priority_mapping offset field of the link layer priority configuration structure to the first byte of the value field.

system_linklayer_config_key_scan_channels 

(0x3) Sets channels to scan on. The first byte of the value is the channel map. 0x1 = Channel 37, 0x2 = Channel 38, 0x4 = Channel 39

system_linklayer_config_key_set_flags 

(0x4) Sets the link layer configuration flags. The value is a little endian 32-bit integer. Flag Values:

  • 0x00000001 - Disable Feature Exchange when slave
  • 0x00000002 - Disable Feature Exchange when master
system_linklayer_config_key_clr_flags 

(0x5) Value is flags to clear. Flags are the same as in SET_FLAGS command.

system_linklayer_config_key_set_afh_interval 

(0x7) Set afh_scan_interval field of Link Layer priority configuration structure.

system_linklayer_config_key_set_priority_table 

(0x9) Value contains priority table to be copied over the existing table. If value is smaller than full table then only those values are updated. see sl_btbluetooth_ll_priorities struct for the definition of priority table.

Function Documentation

◆ sl_bt_system_hello()

sl_status_t sl_bt_system_hello ( )

Verify whether the communication between the host and the device is functional.

Returns
SL_STATUS_OK if successful. Error code otherwise.

◆ sl_bt_system_reset()

void sl_bt_system_reset ( uint8_t  dfu)

Reset the system. The command does not have a response but it triggers one of the boot events (normal reset or boot to DFU mode) depending on the selected boot mode.

Parameters
[in]dfuEnum system_boot_mode_t. Boot mode. Values:
  • system_boot_mode_normal (0x0): Boot to normal mode
  • system_boot_mode_uart_dfu (0x1): Boot to UART DFU mode
  • system_boot_mode_ota_dfu (0x2): Boot to OTA DFU mode

Events

◆ sl_bt_system_halt()

sl_status_t sl_bt_system_halt ( uint8_t  halt)

Force radio to idle state and allow device to sleep. Advertising, scanning, connections, and software timers are halted by this command. Halted operations resume after calling this command with parameter 0. Connections stay alive if system is resumed before connection supervision timeout.

Use this command only for a short time period (a few seconds at maximum). Although it halts Bluetooth activity, all tasks and operations still exist inside the stack with their own concepts of time. Halting the system for a long time period may have negative consequences on stack's internal states.

NOTE: The software timer is also halted. Hardware interrupts are the only way to wake up from energy mode 2 when the system is halted.

Parameters
[in]haltValues:
  • 1: halt
  • 0: resume
Returns
SL_STATUS_OK if successful. Error code otherwise.

◆ sl_bt_system_linklayer_configure()

sl_status_t sl_bt_system_linklayer_configure ( uint8_t  key,
size_t  data_len,
const uint8_t *  data 
)

Send configuration data to the link layer. This command fine tunes low-level Bluetooth operations.

Parameters
[in]keyEnum system_linklayer_config_key_t. Key to configure. Values:
  • system_linklayer_config_key_halt (0x1): Same as system_halt command, value-0 Stop Radio 1- Start Radio
  • system_linklayer_config_key_priority_range (0x2): Sets the RAIL priority_mapping offset field of the link layer priority configuration structure to the first byte of the value field.
  • system_linklayer_config_key_scan_channels (0x3): Sets channels to scan on. The first byte of the value is the channel map. 0x1 = Channel 37, 0x2 = Channel 38, 0x4 = Channel 39
  • system_linklayer_config_key_set_flags (0x4): Sets the link layer configuration flags. The value is a little endian 32-bit integer. Flag Values:
    • 0x00000001 - Disable Feature Exchange when slave
    • 0x00000002 - Disable Feature Exchange when master
  • system_linklayer_config_key_clr_flags (0x5): Value is flags to clear. Flags are the same as in SET_FLAGS command.
  • system_linklayer_config_key_set_afh_interval (0x7): Set afh_scan_interval field of Link Layer priority configuration structure.
  • system_linklayer_config_key_set_priority_table (0x9): Value contains priority table to be copied over the existing table. If value is smaller than full table then only those values are updated. see sl_btbluetooth_ll_priorities struct for the definition of priority table.
[in]data_lenArray length
[in]dataConfiguration data. Length and contents of the data field depend on the key value used.
Returns
SL_STATUS_OK if successful. Error code otherwise.

◆ sl_bt_system_set_max_tx_power()

sl_status_t sl_bt_system_set_max_tx_power ( int16_t  power,
int16_t *  set_power 
)

Set the global maximum TX power for Bluetooth. The returned value is the selected maximum output power level after applying the RF path compensation. If the GATT server contains a TX power service, the TX Power Level attribute will be updated accordingly.

The selected power level may be less than the specified value if the device does not meet the power requirements. For Bluetooth connections, the maximum TX power is limited to 10 dBm if Adaptive Frequency Hopping (AFH) is not enabled.

By default, the global maximum TX power value is 8 dBm.

NOTE: Do not use this command while advertising, scanning, or during connection.

Parameters
[in]powerTX power in 0.1 dBm steps. For example, the value of 10 is 1 dBm and 55 is 5.5 dBm.
[out]set_powerThe selected maximum power level
Returns
SL_STATUS_OK if successful. Error code otherwise.

◆ sl_bt_system_set_identity_address()

sl_status_t sl_bt_system_set_identity_address ( bd_addr  address,
uint8_t  type 
)

Set the device's Bluetooth identity address. The address can be a public device address or a static device address. A valid address set with this command will be written into persistent storage using NVM keys. The stack returns an error if the static device address does not conform to the Bluetooth specification.

The new address will be effective in the next system reboot. The stack will use the address in the NVM keys when present. Otherwise, it uses the default Bluetooth public device address which is programmed at production.

The stack treats 00:00:00:00:00:00 and ff:ff:ff:ff:ff:ff as invalid addresses. Therefore, passing one of them into this command will cause the stack to delete the NVM keys and use the default address in the next system reboot.

Note: Because the NVM keys are located in flash and flash wearing can occur, avoid calling this command regularly.

Parameters
[in]addressBluetooth identity address in little endian format
[in]typeAddress type
  • 0: Public device address
  • 1: Static device address
Returns
SL_STATUS_OK if successful. Error code otherwise.

◆ sl_bt_system_get_identity_address()

sl_status_t sl_bt_system_get_identity_address ( bd_addr *  address,
uint8_t *  type 
)

Read the Bluetooth identity address used by the device, which can be a public or random static device address.

Parameters
[out]addressBluetooth public address in little endian format
[out]typeAddress type
  • 0: Public device address
  • 1: Static random address
Returns
SL_STATUS_OK if successful. Error code otherwise.

◆ sl_bt_system_get_random_data()

sl_status_t sl_bt_system_get_random_data ( uint8_t  length,
size_t  max_data_size,
size_t *  data_len,
uint8_t *  data 
)

Get random data up to 16 bytes.

Parameters
[in]lengthLength of random data. Maximum length is 16 bytes.
[in]max_data_sizeSize of output buffer passed in data
[out]data_lenOn return, set to the length of output data written to data
[out]dataRandom data
Returns
SL_STATUS_OK if successful. Error code otherwise.

◆ sl_bt_system_data_buffer_write()

sl_status_t sl_bt_system_data_buffer_write ( size_t  data_len,
const uint8_t *  data 
)

Write data into the system data buffer. Data will be appended to the end of existing data.

Parameters
[in]data_lenArray length
[in]dataData to write
Returns
SL_STATUS_OK if successful. Error code otherwise.

◆ sl_bt_system_data_buffer_clear()

sl_status_t sl_bt_system_data_buffer_clear ( )

Remove all data from the system data buffer.

Returns
SL_STATUS_OK if successful. Error code otherwise.

◆ sl_bt_system_get_counters()

sl_status_t sl_bt_system_get_counters ( uint8_t  reset,
uint16_t *  tx_packets,
uint16_t *  rx_packets,
uint16_t *  crc_errors,
uint16_t *  failures 
)

Get packet and error counters. Passing a non-zero value also resets counters.

Parameters
[in]resetReset counters if the parameter value is not zero.
[out]tx_packetsThe number of successfully transmitted packets
[out]rx_packetsThe number of successfully received packets
[out]crc_errorsThe number of received packets with CRC errors
[out]failuresThe number of radio failures, such as aborted TX/RX packets, scheduling failures, and so on.
Returns
SL_STATUS_OK if successful. Error code otherwise.

◆ sl_bt_system_set_soft_timer()

sl_status_t sl_bt_system_set_soft_timer ( uint32_t  time,
uint8_t  handle,
uint8_t  single_shot 
)

Start a software timer. Multiple concurrent timers can be running simultaneously. 256 unique timer handles (IDs) are available. The maximum number of concurrent timers is configurable at device initialization. Up to 16 concurrent timers can be configured. The default configuration is 4. As the RAM for storing timer data is pre-allocated at initialization, an application should not configure the amount more than it needs for minimizing RAM usage.

Parameters
[in]time

Frequency interval of events, which indicates how often to send events in hardware clock ticks (1 second is equal to 32768 ticks).

The smallest interval value supported is 328, which is around 10 milliseconds. Any parameters between 0 and 328 will be rounded up to 328. The maximum value is 2147483647, which corresponds to about 18.2 hours.

If time is 0, removes the scheduled timer with the same handle.

[in]handleTimer handle to use, which is returned in timeout event
[in]single_shotTimer mode. Values:
  • 0: false (timer is repeating)
  • 1: true (timer runs only once)
Returns
SL_STATUS_OK if successful. Error code otherwise.

Events

◆ sl_bt_system_set_lazy_soft_timer()

sl_status_t sl_bt_system_set_lazy_soft_timer ( uint32_t  time,
uint32_t  slack,
uint8_t  handle,
uint8_t  single_shot 
)

Start a software timer with slack. The slack parameter allows the stack to optimize wakeups and save power. The timer event is triggered between time and time + slack. See also description of sl_bt_system_set_soft_timer command.

Parameters
[in]time

Interval between how often to send events in hardware clock ticks (1 second is equal to 32768 ticks).

The smallest interval value supported is 328, which is around 10 milliseconds. Any parameters between 0 and 328 will be rounded up to 328. The maximum value is 2147483647, which corresponds to about 18.2 hours.

If time is 0, removes the scheduled timer with the same handle.

[in]slackSlack time in hardware clock ticks
[in]handleTimer handle to use, which is returned in timeout event
[in]single_shotTimer mode. Values:
  • 0: false (timer is repeating)
  • 1: true (timer runs only once)
Returns
SL_STATUS_OK if successful. Error code otherwise.

Events