Hello,
I've been working with a custom board using the nRF5340, but I’ve been struggling with picking up any BLE signal from it. I flashed the network core separately with the hci_ipc sample, then flashed the beacon sample, and everything worked fine on the dev kit. I followed the same steps on my custom board, and while the debugger for the cpuapp indicates that advertising has started (just like on the dev kit), I cannot detect any BLE signal using the nRF Connect app on my smartphone.
I’m using a WiFi antenna connected via U.FL, so I expected to pick up at least some signal at close range.
Troubleshooting Steps So Far:
Verified that my board flashes and runs correctly—both the dev kit and custom board behave identically according to the debugger.
Modified the device tree and network core configurations, but none of the changes had any positive impact.
Confirmed that my connections match the Reference Layout Config. 2: VDD supply, DCDC, USB, NFC.
Other peripherals on the custom board are working correctly, which suggests that the nRF is at least functional.
At this stage, I suspect a possible hardware issue, such as the nRF not being soldered/attached correctly or an issue with the antenna.
I can share whatever is necessary to get to the bottom of the issue, and I'm very much out of ideas. Any thoughts on the matter are appreciated! At the very least I'd like to narrow it down to hardware or software flaw.