https://devzone.nordicsemi.com/f/nordic-q-a/6074/rs-485-comunicationHi, I am using device as ble-Peripheral SDK nRF51_SDK_7.2.0_cf547b5 and softdevice version :s110_nrf51822_7.1.0_softdevice. As ble-central SDK nRF51_SDK_7.2.0_cf547b5 and softdevice version :s120_nrf51822_1.0.1_softdevice my application(one PCen-USTelligent Community 13Mon, 23 Mar 2015 14:17:57 GMThttps://devzone.nordicsemi.com/thread/21269?ContentTypeID=1Mon, 23 Mar 2015 14:17:57 GMT137ad170-7792-4731-bb38-c0d22fbe4515:d8a02434-af2f-473a-8dc7-17595143d4f5Asbj&#248;rn<p>Then I would recommend you to try the new nRF51-DK with the revision 3 of the nRF51 on it. This should allow your application to receive more data as the application latency due to softdevice is reduced significantly.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/21268?ContentTypeID=1Thu, 19 Mar 2015 10:15:19 GMT137ad170-7792-4731-bb38-c0d22fbe4515:fe860dd7-052a-43ff-9bf2-b5ae71855684Himansu Donga<p>Thanks,</p> <p>I am using Rev 2 ic and baud rate max 115200.</p> <p>And I send 100 byte peer to peer is not complete within second.</p> <p>I send 20 byte every BLE_EVT_TX_COMPLETE event at peripheral side and central side BLE_GATTC_EVT_WRITE_RSP.</p> <p>Regards, Himansu Donga</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/21267?ContentTypeID=1Thu, 19 Mar 2015 10:01:06 GMT137ad170-7792-4731-bb38-c0d22fbe4515:67b58471-1306-4c2a-9534-754c3e9e60fbAsbj&#248;rn<p>With the 3 revision of the nRF51 you are able to switch off the CPU lock that was put there by the softdevice. That should enable you to get more data through and be able to read it. What baud rate are you using? At which baud rate does this problem occur for you?</p><div style="clear:both;"></div>