sd_ble_gap_rssi_start not supported?

[jpo38]

After I connected a BLE device (HRM sample program on dev kit), I call sd_ble_gap_rssi_start to do a RSSI measurement, it returns error code 6.

Apparently error code 6 means NRF_ERROR_NOT_SUPPORTED.

Is RSSI measurement not supported yet (I'm using API nrf51-ble-driver_win_0.4.1).

Attached (main.c) is the original HRM sample program modified to toggle RSSI measurement ON/OFF (rather than toggling HRM's CCCD descriptor). It makes it easy to reproduce the problem.

[MartinBL]

Hi. Sorry for the late response.

You say that you use S120 V1.0.1 which does not support sd_ble_gap_rssi_start(). If you try to call sd_ble_gap_rssi_start() anyway the function will return NRF_ERROR_NOT_SUPPORTED. I will suggest that you upgrade your Softdevice to S120 V2.x.x.

Also note that there has been a slight signature change in the sd_ble_gap_rssi_start() function between SDK V7.x.x and V8.x.x. In SDK V7.x.x the function call takes one single parameter:

sd_ble_gap_rssi_start(uint16_t conn_handle)

In SDK V8.0.0 it takes three:

sd_ble_gap_rssi_start(uint16_t conn_handle, uint8_t threshold_dbm, uint8_t skip_count))

[jpo38]

Hi Martin, thank you for your reply. I tried to upgrade SoftDevice dongle to S120 V2.0.0 (SDK 8.0.0). Unfortunately, I'm unable to connect the dongle anymore (actually, I can open the port, but search operation freezes my application). I'm using win driver 0.4.1. Should I upgrade the driver to 0.5.0? But I'm confused because documentation says that S120 support was dropped in 0.5.0....so which driver should be used with S120 2.0.0 dongle...?