why DFU mode not entered after flashing softdevice and bootloader

RE: why DFU mode not entered after flashing softdevice and bootloader

makouda — Fri, 11 Dec 2015 17:45:05 GMT

thansk a lot, I changed SOFTDEVICE_HANDLER_APPSH_INIT(NRF_CLOCK_LFCLKSRC_XTAL_20_PPM, true);by SOFTDEVICE_HANDLER_INIT(NRF_CLOCK_LFCLKSRC_RC_250_PPM_4000MS_CALIBRATION, false); and it works fine now

RE: why DFU mode not entered after flashing softdevice and bootloader

Hung Bui — Fri, 11 Dec 2015 14:10:18 GMT

@makouda: Sorry that I didn't notice you already configured the RAM.

You can try to run the bootloader in debug mode and step through the code to see what goes wrong. To know how to configure the bootloader to work in debug mode, please have a look at question F in this FAQ.

Another thing you would need to check is if your board has the 32kHz crystal or not. The bootloader by default use the 32kHz external crystal. Did the board work with other examples ?

RE: why DFU mode not entered after flashing softdevice and bootloader

makouda — Fri, 11 Dec 2015 13:52:49 GMT

could any file .map or .lst of bootloader give you more informations?

RE: why DFU mode not entered after flashing softdevice and bootloader

makouda — Fri, 11 Dec 2015 13:22:50 GMT

I did exacly as said in the answer but still not working, please see the updated picture of RAM addresses. any help please

RE: why DFU mode not entered after flashing softdevice and bootloader

Hung Bui — Fri, 11 Dec 2015 13:03:23 GMT

Hi Makouda,

You can have a look here.

RE: why DFU mode not entered after flashing softdevice and bootloader

makouda — Fri, 11 Dec 2015 11:17:38 GMT

what do you suggest as addresses

RE: why DFU mode not entered after flashing softdevice and bootloader

Bill — Fri, 11 Dec 2015 07:47:11 GMT

ROM addresses

RE: why DFU mode not entered after flashing softdevice and bootloader

makouda — Fri, 11 Dec 2015 05:33:42 GMT

Are you talking about ROM addresses or the ROM itself (I mean corrupted)

RE: why DFU mode not entered after flashing softdevice and bootloader

Bill — Fri, 11 Dec 2015 03:47:37 GMT

I meet almost the same problem! I can see the advertisement but when I click the DFU, it disconnect! I guess something wrong in the IROM1,IRAM1 or IRAM2!