Tutorial on setting up the bootloader for nrf52832 in IAR

[Alex_Golubev]

Hi.

 

I' m using nRF52832, SDK v15.0.0, S132.

 

I'm want tutorial how make bootloader DFU in IAR.

 

How I make bootloader DFU for nrf52832 in IAR?

[bjorn-spockeli]

You can use nRF Connect for Desktop or nrfutil on a PC to perform DFU. We also have the nRF Connect for Mobile app for Android and iOS, which allows you to perform DFU from a mobile device.

[Alex_Golubev]

Me's need step by step guide, getting started with Nordic's Secure DFU bootloader. 

[Alex_Golubev]

I modify RAM start and RAM STOP in IAR.

after started project.

How do start work DFU? I use function ble_dfu_buttonless_bootloader_start_finalize(); but she not started DFU. 

Error on line nrf_pwr_mgmt_shutdown(NRF_PWR_MGMT_SHUTDOWN_GOTO_DFU); in function

uint32_t ble_dfu_buttonless_bootloader_start_finalize(void)
{
    uint32_t err_code;

    NRF_LOG_DEBUG("In ble_dfu_buttonless_bootloader_start_finalize\r\n");

    err_code = sd_power_gpregret_clr(0, 0xffffffff);
    VERIFY_SUCCESS(err_code);

    err_code = sd_power_gpregret_set(0, BOOTLOADER_DFU_START);
    VERIFY_SUCCESS(err_code);

    // Indicate that the Secure DFU bootloader will be entered
    m_dfu.evt_handler(BLE_DFU_EVT_BOOTLOADER_ENTER);

    // Signal that DFU mode is to be enter to the power management module
    nrf_pwr_mgmt_shutdown(NRF_PWR_MGMT_SHUTDOWN_GOTO_DFU);

    return NRF_SUCCESS;
}

I don't know that do. Help me.

[bjorn-spockeli]

Alex, when you report that functions return errors, then you need to provide the error codes so that we can find out what caused the error. Also do you mean a compilation error or a run-time error?

After calling the ble_dfu_buttonless_bootloader_start_finalize() function the device should jump to the bootloader and the device should start advertising as DfuTarg. You can then connect to the device using nRF Connect for Desktop or Mobile(ios/Android) and then start a DFU by pressing the DFU icon, the blue lock and then select the image you want to upload

[Alex_Golubev]

ble_dfu_buttonless_bootloader_start_finalize -> nrf_pwr_mgmt_shutdown(NRF_PWR_MGMT_SHUTDOWN_GOTO_DFU) -> nrf_pwr_mgmt_shutdown(nrf_pwr_mgmt_shutdown_t shutdown_type) -> shutdown_process(void).

static void shutdown_process(void) 

execution enters in the block

if ((m_pwr_mgmt_evt == NRF_PWR_MGMT_EVT_PREPARE_RESET)
|| (m_pwr_mgmt_evt == NRF_PWR_MGMT_EVT_PREPARE_DFU))
{
NVIC_SystemReset();
}

And occurs System Reset.

[bjorn-spockeli]

YEs, that is the intended behaviour. The chip should perform a SystemReset so that it enter the bootloader, which is always started before the application when it is present on the chip. 

[Alex_Golubev]

Bootloader installed to flash memory. Why do not start bootloader?

[Alex_Golubev]

I get error.

Function sd_ble_gap_sec_params_reply(m_conn_handle, BLE_GAP_SEC_STATUS_PAIRING_NOT_SUPP, NULL, NULL) return error 8. 

Help me. 

[bjorn-spockeli]

sd_ble_gap_sec_params_reply will return NRF_ERROR_INVALID_STATE when the security parameters has not been requested. Possible causes are listed here