DFU bootloader and hrs : Not working

[sowmya]

Hello ,

I am testing the DFU support and usage for the next phase of my project. I am using S110 softdevice 8.0 and SDK 9.0 and evaluation kit nRF51822QFAAG0.

I followed the steps:

1. Erased the flash
2. Programmed softdevice
3. Compiled bootloader dual_bank_ble_s110_pca10028 project and programmed using keil
4. Compiled ble_app_hrs_with_dfu project and programmed using keil

But either dfu_arg or nordic_hrm is not advertising. When I debugged bootloader, the following code snippet is hanging the complete application.

 if (dfu_start || (!bootloader_app_is_valid(DFU_BANK_0_REGION_START)))
{
    nrf_gpio_pin_clear(UPDATE_IN_PROGRESS_LED);

    // Initiate an update of the firmware.
    err_code = bootloader_dfu_start();
    APP_ERROR_CHECK(err_code);

    nrf_gpio_pin_set(UPDATE_IN_PROGRESS_LED);
}

Can anyone help me for the cause of this issue and to fix it? Do I have to change the address in bootloader file?

Regards,
Sowmya

[Vidar Berg]

Are you using a custom PCB or are you using the eval kit? In case it's a custom one, do you have an external LF crystal on it? If not you need change the code so the internal RC is being used:

ble_stack_init()->SOFTDEVICE_HANDLER_APPSH_INIT(, true);

[Michael Dietz]

You need to program the soft device, then boot loader and then you need to program the application via Dfu (not flashing as normal).

If you want to flash all three like you are doing you need to write a flag in memory that tells the boot loader a valid application is present. There is doc and questions on this you can find.

[sowmya]

Hi Michael,

Later I tried with only 1st, 2nd and 3rd step. But the dfu application was not hitting main. So it was not advertising to send the application using DFU.

[sowmya]

Hi Vidar, As mentioned in my question, I am using evaluation kit.

[Vidar Berg]

sorry, overlooked that somehow.