Hi, everyone,
We are developing BLE project on the nRF52832 chip (SDK 15.0) that must transmit to the big distances for about 20m. We set the transmission power to +4dBm, but practically the device is not seen in air at the distances more than 10m. In the distances 8-9m the RSSI fails to -90dBm. What is possible to do without hardware extension?
We also tried to find the way to decrease the connection speed, but couldn’t find it: The register (from the type “NRF_RADIO_Type”) “NRF_RADIO->MODE” is equal to 0 that means the transfer rate is 1MBps. According to datasheet the rate 250kBps is deprecated. According to this site https://blog.nordicsemi.com/getconnected/things-you-should-know-about-bluetooth-range the throughput is up to 305kBps on BT4.2. But how is it possible to decrease it to lower datarate?
Best regards
Boris Fridman
