nRF51822 How can I set its registers by using uart I/F?

[makoto]

I want to set its registers by uart I/F. Because our host cpu(ARM9) has no SWD I/F.

How can I set its registers by using uart I/F? I read a document of "nRF51_Series_Reference_manual v3.0" ,but I didn't resolve this problem.

Are there any document for how to setting registers by uart I/F?

[RK]

You can't. Well you can if you write custom code to read the UART and set registers, but the chip has no built-in UART interface to control it.

[makoto]

Thank you for reply. DFU(Device Firmware Updates) function can update nRF51's firmware by wired interfaces (etc. UART). So can I set its registers by uart same as DFU?

If I set gpio pin to read the Uart by swd I/F by extra debug tool in advance,Can I set registers by Uart?

[RK]

No. The DFU service does DFU, you can only use it to put a new image on the chip. If you want to perform other random operations you need to write your own DFU service which supports those random operations.

I dont' understand what your last sentence means at all. "read uart by swd I/F by extra debug tool' .. means nothing to me. If you have an SWD-capable tool, use that.