Combining two applications

[mukesh]

I want to combine two applications, both of them having two services. One application resides at 0x16000 and other one resides at 0x249f0. I am using softdevice 7.3 and sdk 6. What I wanted to do is that, when I press one button it should to jump to the second application. I combined both applications using the mergehex. If I upload the combined image with nrfjprog, both applications will work fine. But if i upload the firmware using dfu, the second application will not work. Why does the second applications not getting saved properly? How can I upload the merged hex file properly with the dfu?

[bjorn-spockeli]

Hi Mukesh,

I suggest that you take a look at this question and answer.

-Bjørn

[bjorn-spockeli]

Hi Muckesh, you need to replace DFU_BANK_0_REGION_START with 0x249f0 in the two if statements before NVIC_SystemReset() in main, i.e.

  if (dfu_start || (!bootloader_app_is_valid(0x249f0)))
    {
        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);
    }

    if (bootloader_app_is_valid(0x249f0) && !bootloader_dfu_sd_in_progress())
    {
        // Select a bank region to use as application region.
        // @note: Only applications running from DFU_BANK_0_REGION_START is supported.
        bootloader_app_start(0x249f0);//DFU_BANK_0_REGION_START
    }