https://devzone.nordicsemi.com/f/nordic-q-a/127052/nrf54l15-bare-metal-ble-disables-uart-rxHello, We&#39;re using nrf-sdk-bm v0.9.0 and having an issue with BLE and UART coexistence. The goal is to be able to operate in and transition between three modes: UART alone, UART/BLE together, and BLE alone. We are able to connect over UART at 921600en-USTelligent Community 13Thu, 19 Feb 2026 17:34:16 GMThttps://devzone.nordicsemi.com/thread/561632?ContentTypeID=1Thu, 19 Feb 2026 17:34:16 GMT137ad170-7792-4731-bb38-c0d22fbe4515:6e0fe55f-8fe7-43ea-9059-f4e8989082c4Yanqil<p>Hi, thank you for the reply.&nbsp; Switching to UART00 seems to have resolved the issue.&nbsp; Some follow up questions:&nbsp;</p> <p>- We used Table 73 in the datasheet to help us pick the peripherals and the table indicated that UARTE 21 is valid for P2 pins 7 and 8.&nbsp; Can you point us to where in the datasheet we can find information that we are crossing power domains by using UART21 on port 2 pins?&nbsp; This way, we can check if there are other irregularities.</p> <p><img style="max-height:240px;max-width:320px;" src="https://devzone.nordicsemi.com/resized-image/__size/640x480/__key/communityserver-discussions-components-files/4/pastedimage1771522343483v1.png" alt=" " /></p> <p>- Is there a tool that we can use to help check pin&nbsp;to peripheral mapping?&nbsp; Other vendors I&#39;ve used in the past has GUI tools that help generate configuration files.&nbsp;</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/561404?ContentTypeID=1Tue, 17 Feb 2026 22:32:41 GMT137ad170-7792-4731-bb38-c0d22fbe4515:51fae0c0-a6c2-4590-b776-a7f1a7545fa0Turbo J<p>You are using pins across power domains. Either use UART00 or use pins from Port 1.&nbsp;</p> <p>See Figure 1 in Product overview (datasheet), which shows power domains for peripherials and GPIO ports.</p><div style="clear:both;"></div>