bootloader + watchdog for mbed

RE: bootloader + watchdog for mbed

bjorn-spockeli — Thu, 09 Feb 2017 07:16:55 GMT

Hi Shay, what DFU version have you set in the DFU service included in your application?

RE: bootloader + watchdog for mbed

Shay Ohayon — Wed, 08 Feb 2017 15:35:44 GMT

Hi Bjorn. Thank you for the follow up. I have worked on this for quite a while and I still can't get the original bootloader project from mbed to compile. I talked to the mbed team and they said they no longer support S130 v1.0.0. After fiddling around over the weekend, I was able to use the vanilla bootloader from SDK 10. It only accepts v0.8 bootloader updates, so I ended up figuring out how to send these updates from my code. For some reason, nrftoolbox failed to send updates, but my code did mange to. I think it's again something related to the expected bootloader version but I didn't pursue this further as things seem to be working now.

RE: bootloader + watchdog for mbed

bjorn-spockeli — Wed, 08 Feb 2017 14:57:01 GMT

Hi Shay, could you elaborate when you say that the bootloader does not accept incoming updates? Are you using one of our apps to perform the update? Do you get any errors or does it simply disconnect? Do you want to keep the discussion in this question or in this question?

RE: bootloader + watchdog for mbed

Shay Ohayon — Thu, 02 Feb 2017 14:16:14 GMT

It appears that they added support for v2.0.0, but not 1.0.0 At the moment, I cannot switch to v2.0.0 and OS5 because the app is too big to fit into the 256kb of the nrf51822. I am stuck with v1.0.0 and mbed OS2

RE: bootloader + watchdog for mbed

Shay Ohayon — Thu, 02 Feb 2017 14:13:51 GMT

As a reminder - what I'm trying to achieve is a single bank bootloader for S130 v1.0.0 with WDT support.

RE: bootloader + watchdog for mbed

Shay Ohayon — Thu, 02 Feb 2017 14:13:13 GMT

Bump. I finally had some time to get back to this issue. The bootloader is advertising DFUTarg after flashing, but will not accept any incoming updates and does not start the application that was flashed.

RE: bootloader + watchdog for mbed

Shay Ohayon — Tue, 13 Dec 2016 16:01:15 GMT

I have contacted mbed team. They have been working on new bootloaders that will support watchdog. Those should be released soon.

RE: bootloader + watchdog for mbed

bjorn-spockeli — Mon, 12 Dec 2016 10:07:13 GMT

I am afraid that I am not familiar with how our bootloader has been interfaced with the mbed platform, but in general if a nRF5x device is flashed with a bootloader, then it should jump to the bootloader first and then the application if it is present. Do you see the bootloader advertising when you only flash the S130 v1.0.0 and the bootloader from SDK v10?