DFU dongle no advertising

RE: DFU dongle no advertising

niels — Tue, 02 Jan 2018 02:05:39 GMT

Redid the complete process: download sdk. Change makefile.windows, for the right place/version of the GNU tools.

Generate private key. Generate public key. Overwrite public key.c.

Download uECC lib. Compile for nrf51_keil. Compile project.

Flash softdevice, flash bootloader.... annnndddd nothing. Flashed with nRFgo Studio and with flash function within uVision.

//edit I made a mistake, I thought I read in the datasheet of the devkit that the dongle contained a AC variant. But it contains an AA. so there was the problem. changed the IRAM from 0x20002C000 to 0x2002B000, and size to 1500. 1400 was 14 bytes too small.

thanks for the help

RE: DFU dongle no advertising

niels — Tue, 02 Jan 2018 00:49:51 GMT

I erase everything before I retry. When putting the RAM address at 0x20002C00 with size 5380, nothing happens and it gets stuck in the hardfault handler. When debugging it doesnt even reach the first "{" of the main loop.

So this is with the nRF5_SDK_12.3.0_d7731ad bootloader secure example. With the softdevice s130 included in the SDK. No other application than the softdevice and bootloader flashed to it.

When debugging this configuration it starts at 0x6D0 (after reset). This is the start at system_nrf51.c:SystemInit() Then when it get to the end bracket "}" of SystemInit it gets stuck in the following loop:

0x00 - 0xC6
0x6A8 - 0x6AA
0x6BC - 0x6C0
0x6AE
0x0CA - 0x0CE

RE: DFU dongle no advertising

Hung Bui — Fri, 22 Dec 2017 14:48:21 GMT

We still write the start address of the bootloader inside nrf_bootloader_info.c

Please use the start RAM address at 0x20002C00 size 5380. The start address of RAM varies base on the configuration of the application to the softdevice when enabling it. I suggest to do a full erase of the chip before testing. You are testing with just the bootloader and softdevice, no application(buttonless), correct ?

RE: DFU dongle no advertising

niels — Thu, 21 Dec 2017 23:18:20 GMT

When debugging it hangs hangs at: nrf_dfu_mbr.c:95 ret_val = sd_mbr_command(&command);

It then hangs at the HardFault_handler. Will continue looking for an answer.

In older versions of the bootloader there was also a define for the start address of the bootloader, that is not present anymore in this version?

RE: DFU dongle no advertising

Hung Bui — Thu, 21 Dec 2017 12:27:06 GMT

Also, please try to use the _debug project, where you can turn on logging and see how the bootloader start and what could be wrong. You can turn on logging by updating sdk_config.h

RE: DFU dongle no advertising

Hung Bui — Thu, 21 Dec 2017 10:07:18 GMT

You may want to try debug the bootloader. You would need to set optimization level to level 0 before you can step into the code.

RE: DFU dongle no advertising

niels — Thu, 21 Dec 2017 01:15:12 GMT

The loaded example is for PCA10028 which contains an nRF51. The PCA10000 contains an xxAC chip. Other programs which work correct have their start iram at 0x20002000 therefor I tried that. The dongle contains also the 32kHz crystal.

Regarding the tutorial being voor nRF52, the library I compiled was for the nRF51.

RE: DFU dongle no advertising

Hung Bui — Wed, 20 Dec 2017 13:21:24 GMT

Hi Niels,

The tutorial was made for nRF52 have you made sure you use the bootloader project for nRF51 ? Why did you change the RAM start to 0x20002000 ? Did you follow the RAM requirements throw by softdevice after calling sd_ble_enable() ?

Which board did you use to test ? Which chip on the board ? Do you have have 32kHz crystal on board ? The bootloader for nRF51 made for xxAC variant which has 256kB flash. Please check the chip variant on your board.