DFU Bootloader crashes within softdevice code

RE: DFU Bootloader crashes within softdevice code

MartinBL — Wed, 11 Apr 2018 09:22:16 GMT

I can't say for sure that it is a clock issue. I believe that __WFE() resides at address 0x00013d6c though, which indicates that the system has been in sleep mode.

If you are able to successfully run a "normal example" using an external crystal, but without the bootloader, then we can conclude that the crystal works.

RE: DFU Bootloader crashes within softdevice code

keenanda — Tue, 10 Apr 2018 14:05:23 GMT

I am currently looking into whether it may be a clock issue. Just wondering if you had encountered something similar that was caused by a clock issue?

RE: DFU Bootloader crashes within softdevice code

keenanda — Tue, 10 Apr 2018 13:22:28 GMT

Yes we have an external LF crystal. We have an application that runs on the device and uses the same clock configuration that runs perfectly fine. Here is our clock configuration:

#define NRF_CLOCK_LFCLKSRC {.source = NRF_CLOCK_LF_SRC_XTAL, \

.rc_ctiv = 0, \

.rc_temp_ctiv = 0, \

.xtal_accuracy = NRF_CLOCK_LF_XTAL_ACCURACY_20_PPM}

RE: DFU Bootloader crashes within softdevice code

MartinBL — Tue, 10 Apr 2018 12:31:39 GMT

Hi,

Are you using a custom device without an external LF crystal? It may seem like your bootloader is waiting for the crystal to start. But if it waits for a non-existing crystal then obviously that would be a problem.