How can I use buttonless DFU with NUS

RE: How can I use buttonless DFU with NUS

bjorn-spockeli — Fri, 02 Mar 2018 08:42:36 GMT

Giang: Glad to hear that you successfully merged the two examples. Your question will be assigned to one of our application engineers.

RE: How can I use buttonless DFU with NUS

Giang — Fri, 02 Mar 2018 08:39:00 GMT

Thank , I finished it . Can you check out my post : https://devzone.nordicsemi.com/f/nordic-q-a/31037/tranfer-large-data-from-android-to-nrf52-devkit

Thank.

RE: How can I use buttonless DFU with NUS

bjorn-spockeli — Fri, 02 Mar 2018 08:35:51 GMT

Giang: You cannot simply merge the two application hex files. You have to either add the DFU service to the ble_app_uart example or add the Nordic UART service to the ble_app_buttonless_dfu example. I would recommend the first, so start by copying the code from services_init() in the ble_app_buttonless_dfu to the services_init() function in ble_app_uart. Make sure you add the files in the nRF_DFU folder, i.e. ble_dfu.c, ble_dfu_bonded.c and ble_dfu_unbonded.c to the ble_app_uart example. Make sure that you change NRF_SDH_BLE_VS_UUID_COUNT to 2 in sdk_config.h as well as increase the RAM allocated to the SoftDevice.

RE: How can I use buttonless DFU with NUS

Giang — Thu, 22 Feb 2018 10:10:51 GMT

Hi biorn-spockeli , I have the same problem. I tested : https://devzone.nordicsemi.com/b/blog/posts/getting-started-with-nordics-secure-dfu-bootloader and success . But now , I want to combine ble_app_buttonless_dfu and ble_app_uart . Please show me solution . I have to :

1. Flash project bootloader_secure_ble as bootloader

2. Using nrfutil make zip file (application + my private key)

3. update zip file via DFU to my KIT via Android

Merge bootloader hex + application (buttonless+nus) using nrfutil , but how to use my private key .

Please guide me using nrfutil to merge 2 file hex . If I understand wrong , please show me how to fix

RE: How can I use buttonless DFU with NUS

bjorn-spockeli — Sat, 04 Nov 2017 00:46:58 GMT

You will also need to create a settings hex using nrfutil and merge it with the bootloader hex so that you start the application, as explained in Appendix 1 of this blog post

RE: How can I use buttonless DFU with NUS

bjorn-spockeli — Sat, 04 Nov 2017 00:44:44 GMT

You need to flash the bootloader to your nrf52832 since nrf_dfu_svci_vector_table_set() which is called by ble_dfu_buttonless_async_svci_init() will check if there is a bootloader present or not. If it does not see the bootloader start address written to UICR, then it will return NRF_ERROR_NO_MEM

uint32_t nrf_dfu_svci_vector_table_set(void)
{
    uint32_t err_code;

    if (NRF_UICR->NRFFW[0] != 0xFFFFFFFF)
    {
        NRF_LOG_INFO("Setting vector table to bootloader: 0x%08x", NRF_UICR->NRFFW[0]);
        err_code = sd_softdevice_vector_table_base_set(NRF_UICR->NRFFW[0]);
        if (err_code != NRF_SUCCESS)
        {
            NRF_LOG_ERROR("Failed running sd_softdevice_vector_table_base_set");
            return err_code;
        }

        return NRF_SUCCESS;
    }

    NRF_LOG_ERROR("No bootloader was found");
    return NRF_ERROR_NO_MEM;
}

RE: How can I use buttonless DFU with NUS

rc — Mon, 30 Oct 2017 00:41:28 GMT

It is the following function

err_code = ble_dfu_buttonless_async_svci_init();
APP_ERROR_CHECK(err_code);

RE: How can I use buttonless DFU with NUS

bjorn-spockeli — Sun, 29 Oct 2017 16:44:11 GMT

Which function is returning NRF_ERROR_NO_MEM?