How do I configure signal strength in sending advertisement data?

[Ken Matsui]

I'd like to minimize signal strength of nRF51822 chip in sending advertisement. How do I configure?

Thanks in advance.

[Håkon Alseth]

Hi,

The nRF8001 APIs are different compared to the nRF51. 8001 uses a library called "libaci". For setting the tx-power (libaci.c): retval = lib_aci_set_radio_tx_power(tx_power) Where the legal input is:

  ACI_DEVICE_OUTPUT_POWER_MINUS_18DBM = 0x00, /**< Output power set to -18dBm */
  ACI_DEVICE_OUTPUT_POWER_MINUS_12DBM = 0x01, /**< Output power set to -12dBm */
  ACI_DEVICE_OUTPUT_POWER_MINUS_6DBM  = 0x02, /**< Output power set to -6dBm  */
  ACI_DEVICE_OUTPUT_POWER_0DBM  = 0x03  /**< Output power set to 0dBm   - DEFAULT*/

Best regards Håkon

[Håkon Alseth]

Hi,

If it's .cpp, then you're using the arduino SDK. The enum is defined in aci.h: https://github.com/NordicSemiconductor/ble-sdk-arduino/blob/master/libraries/BLE/aci.h

Best regards Håkon