Difficulty with switch to (buttonless) DFU in iOS

RE: Difficulty with switch to (buttonless) DFU in iOS

wim — Thu, 23 Jul 2015 12:10:15 GMT

Setting the revision characteristic did the trick, thanks!

RE: Difficulty with switch to (buttonless) DFU in iOS

Hung Bui — Wed, 22 Jul 2015 10:48:10 GMT

Please make sure you have latest nRFToolbox and also that you have added DFU revision characteristic in the application, the value of this characteristic should be 0x01. This will tell the DFU app on the phone that it's an application and it will trigger the command to set the device in bootloader mode.

RE: Difficulty with switch to (buttonless) DFU in iOS

wim — Wed, 22 Jul 2015 09:54:02 GMT

@ Hung: how does nRFToolbox on iOS make the device switch to boot loader? Is there a separate button for that? When I do select device, I see the device connecting, but it stays in its normal operation mode, and the 'upload' button does not become active. If I do it with LightBlue, I do see that boot loader is activated and the Upload button does become active.

RE: Difficulty with switch to (buttonless) DFU in iOS

Hung Bui — Wed, 22 Jul 2015 09:31:59 GMT

@Wim: You can simply use nRFToolbox. It will do all the task, to switch from application to bootloader and then upload the image.

Lightblue is a little cumbersome, sometimes causing issue.

Make sure you have enable IS_SRVC_CHANGED_CHARACT_PRESENT on both the application and the bootloader.

Erase bond, turn off and turn on bluetooth to make sure the old attribute table (where IS_SRVC_CHANGED_CHARACT_PRESENT still = 0) is cleaned.