Radio#

sl_wifi_get_max_tx_power#

sl_status_t sl_wifi_get_max_tx_power (sl_wifi_interface_t interface, sl_wifi_max_tx_power_t * max_tx_power)

Get the maximum Wi-Fi transmit power.

• Pre-conditions:

  • sl_wifi_init should be called before this API.

Returns

• sl_status_t. See https://docs.silabs.com/gecko-platform/latest/platform-common/status for details.

Note

• This function gets the transmit power for a particular radio interface: SL_WIFI_2_4GHZ_INTERFACE.

sl_wifi_set_max_tx_power#

sl_status_t sl_wifi_set_max_tx_power (sl_wifi_interface_t interface, sl_wifi_max_tx_power_t max_tx_power)

Set the maximum Wi-Fi transmit power.

Returns

• sl_status_t. See https://docs.silabs.com/gecko-platform/latest/platform-common/status for details.

Note

• This function sets the transmit power for a particular radio interface: SL_WIFI_2_4GHZ_INTERFACE. Eg: Setting transmit power for client interface at 2.4 GHz will also set transmit power of the AP interface at 2.4 GHz.

• The effective transmit power is subject to regional and device limitations. If the specified transmit power exceeds the maximum supported value for that region, the transmission will occur at the maximum supported transmit power.

sl_wifi_set_antenna#

sl_status_t sl_wifi_set_antenna (sl_wifi_interface_t interface, sl_wifi_antenna_t antenna)

Set the Wi-Fi antenna for an interface.

• Pre-conditions:

  • sl_wifi_init should be called before this API.

Returns

• sl_status_t. See https://docs.silabs.com/gecko-platform/latest/platform-common/status for details.

sl_wifi_get_antenna#

sl_status_t sl_wifi_get_antenna (sl_wifi_interface_t interface, sl_wifi_antenna_t * antenna)

Get the Wi-Fi antenna for an interface.

• Pre-conditions:

  • sl_wifi_init should be called before this API.

Returns

• sl_status_t. See https://docs.silabs.com/gecko-platform/latest/platform-common/status for details.

sl_wifi_get_channel#

sl_status_t sl_wifi_get_channel (sl_wifi_interface_t interface, sl_wifi_channel_t * channel)

Get the current channel for the given Wi-Fi interface.

• Pre-conditions:

  • sl_wifi_init should be called before this API.

Returns

• sl_status_t. See https://docs.silabs.com/gecko-platform/latest/platform-common/status for details.

sl_wifi_set_channel#

sl_status_t sl_wifi_set_channel (sl_wifi_interface_t interface, sl_wifi_channel_t channel)

Set the channel for the given Wi-Fi Access Point interface.

• Pre-conditions:

  • sl_wifi_init should be called before this API.

Returns

• sl_status_t. See https://docs.silabs.com/gecko-platform/latest/platform-common/status for details.

sl_wifi_set_transmit_rate#

sl_status_t sl_wifi_set_transmit_rate (sl_wifi_interface_t interface, sl_wifi_rate_protocol_t rate_protocol, sl_wifi_rate_t mask)

Set the Wi-Fi transmit rate for the given 802.11 protocol on the specified Wi-Fi interface.

• Pre-conditions:

  • sl_wifi_init should be called before this API.

Returns

• sl_status_t. See https://docs.silabs.com/gecko-platform/latest/platform-common/status for details.

sl_wifi_get_transmit_rate#

sl_status_t sl_wifi_get_transmit_rate (sl_wifi_interface_t interface, sl_wifi_rate_protocol_t * rate_protocol, sl_wifi_rate_t * mask)

Get the Wi-Fi transmit rate for the given 802.11 protocol on the specified Wi-Fi interface.

• Pre-conditions:

  • sl_wifi_init should be called before this API.

Returns

• sl_status_t. See https://docs.silabs.com/gecko-platform/latest/platform-common/status for details.

sl_wifi_set_listen_interval#

sl_status_t sl_wifi_set_listen_interval (sl_wifi_interface_t interface, sl_wifi_listen_interval_t listen_interval)

Set the Wi-Fi client interface listen interval.

• Pre-conditions:

  • sl_wifi_init should be called before this API.

Returns

• sl_status_t. See https://docs.silabs.com/gecko-platform/latest/platform-common/status for details.

Note

• By default listen interval is set 1000 millisecs. User can call this API to overwrite the value. Si91X implementation allows this API ONLY to be called before calling sl_wifi_connect(), sl_wifi_start_ap(), sl_wifi_start_wps()

sl_wifi_get_listen_interval#

sl_status_t sl_wifi_get_listen_interval (sl_wifi_interface_t interface, sl_wifi_listen_interval_t * listen_interval)

Get the Wi-Fi client listen interval.

• Pre-conditions:

  • sl_wifi_init should be called before this API.

Returns

• sl_status_t. See https://docs.silabs.com/gecko-platform/latest/platform-common/status for details.

Note

• By default, the listen interval is set to 1000 millisecs.

sl_wifi_update_gain_table#

sl_status_t sl_wifi_update_gain_table (uint8_t band, uint8_t bandwidth, uint8_t * payload, uint16_t payload_len)

Assign the user configurable channel gain values in different regions to the module from user.

• Pre-conditions:

  • This method is used for overwriting default gain tables that are present in firmware.

• Pre-conditions:

  • Customer can load gain tables for 2.4 GHz-20 MHz.

• Pre-conditions:

  • This is a blocking API.

• Pre-conditions:

  • sl_wifi_init should be called before this API.

Returns

• sl_status_t. See https://docs.silabs.com/gecko-platform/latest/platform-common/status for details.

Note

• 1. This frame must be used only by customers who have done FCC/ETSI/TELEC/KCC certification with their own antenna. Silicon Labs is not liable for inappropriate usage of this frame that may result in violation of FCC/ETSI/TELEC/KCC or any certifications.

  2. Internally, firmware maintains two tables: Worldwide table & Region-based table. Worldwide table is populated by the firmware with max power values that the chip can transmit and meet target specs like EVM. Region-based table has a default gain value set.

  3. When certifying with user antenna, the Region has to be set to Worldwide and sweep the power from 0 to 21 dBm. Arrive at a max power level that will pass certifications, especially band-edge.

  4. The FCC/ETSI/TELEC/KCC max power level should be loaded in an end-to-end mode via WLAN User Gain table. This has to be called done for every boot-up as this information is not saved inside the flash. Region-based user gain table sent by the application is copied onto the Region-based table. SoC uses this table in FCC/ETSI/TELEC/KCC to limit the power and to not violate the allowed limits.

  5. For Worldwide region, the firmware uses the Worldwide table for Tx. For other regions (FCC/ETSI/TELEC/KCC), the firmware uses the min value out of the Worldwide & Region-based table for Tx. Also, there will be part to part variation across the chips. Offsets that are estimated during the flow of manufacture will be applied as correction factor during normal mode of operation.

  6. In a 2.4 GHz band, 40 MHz is not supported.

  7. Executing this API will overwrite calibration values in certified modules.

  8. In FCC-certified modules, this API will trigger an error SL_STATUS_SI91X_FEATURE_NOT_AVAILABLE if used, except when in SL_SI91X_TRANSMIT_TEST_MODE mode.

sl_wifi_set_11ax_config#

sl_status_t sl_wifi_set_11ax_config (uint8_t guard_interval)

Configure the 11ax params.

This is a blocking API.

• Pre-conditions:

  • This API should be called before sl_wifi_connect

Returns

• sl_status_t. See https://docs.silabs.com/gecko-platform/latest/platform-common/status for details.