RE: Sample RSSI code of nrf51422

Hung Bui — Wed, 05 Mar 2014 16:29:37 GMT

Hi Xinhua, I am terribly sorry for a late response.

If you use the Radio directly (without ANT) you can sample the signal strength by triggering a RSSISTART task and readout the RSSISAMPLE register.

If you use ANT you can

/* Enable RSSI level for received messages */ sd_ant_lib_config_set(ANT_LIB_CONFIG_MESG_OUT_INC_RSSI);

Then each time you receive a payload, byte 13 in event_message_buffer will contain the RSSI value, when reading out the event by: /* Fetch the event */ return_value = sd_ant_event_get(&ant_channel, &event, event_message_buffer);