How to enter into DFU mode without button press?

RE: How to enter into DFU mode without button press?

balaji — Fri, 15 Nov 2013 14:41:10 GMT

Yes, as for my knowledge, reset button will not lead you to enter into bootloader mode, but you can configure a button on the device to enter into the bootloader mode. And the power-on reset will always start from the Dfu mode, if you have flashed the bootloader code in your device, until the timeout occurs. But i am not sure.

RE: How to enter into DFU mode without button press?

Guest — Fri, 15 Nov 2013 14:25:41 GMT

Hi Balaji

Thanks for the reply .... But I was facing an issue after device firmware update.. When I do a reset using the button on the board the firmware that I updated came up, but when I done a power on reset(detaching and re-attaching board) boot loader came up ,where it was supposed to be the application which I updated . Did you had any such experiences Any idea to solve this issue

RE: How to enter into DFU mode without button press?

Bastiaan — Fri, 15 Nov 2013 14:25:41 GMT

Hi Balaji

RE: How to enter into DFU mode without button press?

balaji — Fri, 15 Nov 2013 13:18:06 GMT

Hi prasad,

Please refer the below link, https://devzone.nordicsemi.com/index.php/firmware-update-without-button-press, the modification i did is same as above, but instead of NRF_POWER->GPREGRET = 1; i am using sd_power_gpregret_set. (softdevice is enabled)

RE: How to enter into DFU mode without button press?

Bastiaan — Fri, 15 Nov 2013 12:38:46 GMT

Hi Balaji

Were you able to update the firmware without button press? What was the modification you have done?

Regards Prasad

RE: How to enter into DFU mode without button press?

Guest — Fri, 15 Nov 2013 12:38:46 GMT

Hi Balaji

Were you able to update the firmware without button press? What was the modification you have done?

Regards Prasad

RE: How to enter into DFU mode without button press?

Prasad — Tue, 12 Nov 2013 12:58:01 GMT

Hi Balaji

Were you able to update the firmware without button press? What was the modification you have done?

Regards Prasad

RE: How to enter into DFU mode without button press?

balaji — Tue, 15 Oct 2013 03:34:05 GMT

Hi Morten, I have edited my question with the changes i made in the sample ble_app_hrs and also in the bootloader code. Please refer it and give me your solution.

RE: How to enter into DFU mode without button press?

Ole Morten — Fri, 11 Oct 2013 12:20:47 GMT

Setting GPREGRET should work if you do it correctly, and check it correctly in the bootloader. Could you please edit your question to include code snippets you've changed?