DFU bootloader doesn't load the my application

RE: DFU bootloader doesn't load the my application

noe — Mon, 18 Dec 2017 15:55:43 GMT

That helped me so much!! Thanks

RE: DFU bootloader doesn't load the my application

ypearson — Fri, 31 Mar 2017 14:50:45 GMT

Thank you for the response=) I'll look at the link in detail.

RE: DFU bootloader doesn't load the my application

Hung Bui — Fri, 31 Mar 2017 07:35:59 GMT

Hi, I'm glad that you found the issue. If you want to enter DFU bootloader without a button you should try the buttonless example. It will write to s_dfu_settings.enter_buttonless_dfu to set it to 1 and then trigger a reset to enter bootloader. Please have a look at the example here.

RE: DFU bootloader doesn't load the my application

ypearson — Thu, 30 Mar 2017 17:04:28 GMT

The GPIO 16 that is being held low is what is causing the app from running. I removed the GPIO check and now the app runs, but I can't use the DFU anymore. I'm using a custom PCB without a button.

__WEAK bool nrf_dfu_enter_check(void){

 if (nrf_gpio_pin_read(BOOTLOADER_BUTTON) == 0)
{
    return true;
}

if (s_dfu_settings.enter_buttonless_dfu == 1)
{
    s_dfu_settings.enter_buttonless_dfu = 0;
    APP_ERROR_CHECK(nrf_dfu_settings_write(NULL));
    return true;
}
return false;

}

RE: DFU bootloader doesn't load the my application

ypearson — Thu, 30 Mar 2017 15:58:18 GMT

I'm going to update my post, need to make sure I re-add the correct keys

RE: DFU bootloader doesn't load the my application

Hung Bui — Thu, 30 Mar 2017 12:53:06 GMT

Does the blinky work with the softdevice S132 ? Or it works as a stand alone application without softdevice ?

Could you provide the .zip file you used, the private and public key you generated and the bootloader you generated ? Please set your bootloader in debug mode and step into the code and put a breakpoint inside nrf_dfu_init() in nrf_dfu.c. We have a function called nrf_dfu_app_is_valid() to check if there is a valid application. Please check the return value of nrf_dfu_app_is_valid().

Please try to test with unmodified bootloader and an image of an BLE example in the SDK.

RE: DFU bootloader doesn't load the my application

ypearson — Wed, 29 Mar 2017 21:07:35 GMT

It seems that the code doesn't pass this line: ret_val = nrf_bootloader_init();