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BLE example not working on external target

Hello,

I have a custom board with a Taiyo Yuden chip (it integrates an nRF51822 QFAC chip, 2 crystals and the BLE antenna).

I program it using SWD. I succesfully uploaded code to this board, blinking leds and logging over RTT. I programmed a softdevice on it using nRF Go Studio (S130).

The BLE UART example works fine on the Development Kit, however when I try to run it on my custom pcb it doesn't work (upload successful but no BLE peripherial visible).

What can be the issue ?

Louis

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  • Thank you very much. I have found that it was caused by an issue with the crystals used in our module : the crystals are 32kHz and 32MHz instead of 16 MHz in the development kit. As a result, it is needed to change a register in the chip with : nrfjprog.exe --memwr 0x10001008 --val 0xFFFFFF00 (erased when softdevice is erased).

    However, we have issues with the range of bluetooth so we are updating our design : I will send it to you when it is done in order to check that it is correct.

    Thank you very much for your quick support.

    Best regards

    Louis

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