How to make the nRF51 UART Peripheral Example connect/function with the nRF52 UART Central Examplehttps://devzone.nordicsemi.com/f/nordic-q-a/22653/how-to-make-the-nrf51-uart-peripheral-example-connect-function-with-the-nrf52-uart-central-exampleI am attempting to connect and send data between an nRF51422 (DK) running the UART Peripheral Example Code and an nRF52832 (DK) running the UART Central example. I am able to successfully load the code onto both devices and monitor print statements throughen-USTelligent Community 13Fri, 09 Jun 2017 15:23:02 GMTRE: How to make the nRF51 UART Peripheral Example connect/function with the nRF52 UART Central Examplehttps://devzone.nordicsemi.com/thread/89082?ContentTypeID=1Fri, 09 Jun 2017 15:23:02 GMT137ad170-7792-4731-bb38-c0d22fbe4515:aead0047-ffa8-4c45-be53-b5d243f2fedbesmart_eng<p>After making this change I am able to successfully send/receive messages between the nRF51 and nrf52. My question is resolved, thank you!</p><div style="clear:both;"></div>RE: How to make the nRF51 UART Peripheral Example connect/function with the nRF52 UART Central Examplehttps://devzone.nordicsemi.com/thread/89081?ContentTypeID=1Fri, 09 Jun 2017 09:27:34 GMT137ad170-7792-4731-bb38-c0d22fbe4515:2b0d695d-92d3-426a-8e51-223a89d41d74FormerMember<p>I suspect the problem is related to the GATT module (<code>gatt_init()</code> ) introduced in SDK 13. The GATT module will initiate a MTU request, which is not supported by S130. By removing <code>gatt_init()</code> from ble_app_uart_c, I would think it should work to connect ble_app_uart_c (SDK13) to ble_app_uart (SDK 12.3).</p><div style="clear:both;"></div>