can not download app from nRFgo Studio after download bootloader

RE: can not download app from nRFgo Studio after download bootloader

bjorn-spockeli — Thu, 09 Feb 2017 09:21:07 GMT

Great! :) I would appreciate if you could mark the answer as correct by clicking the checkmark in the circle to the left of the answer.

RE: can not download app from nRFgo Studio after download bootloader

Chaw — Thu, 09 Feb 2017 00:32:12 GMT

Thanks. It can work.

RE: can not download app from nRFgo Studio after download bootloader

bjorn-spockeli — Wed, 08 Feb 2017 13:28:12 GMT

Hi Chaw,

I found the cause, its one of the known issues with the experimental buttonless DFU example in the SDK, see this answer.

Long story short, the buttonless DFU example, which you have used to add DFU support in your application, reserves a codepage at 0x7E000 for MBR parameters, which is not necessary and should not been added in the application, only in the bootloader. If the codepage is added in the application, then it will collide with the same codepage that is defined in the bootloader.

Thus, the entire section in nrf_dfu_settings.c shown below should be commented out in the application. However, be sure that you do not compile the secure bootloader with this section commented out, as it also uses this file!

#if defined ( NRF52 )

/**@brief   This variable reserves a codepage for mbr parameters, to ensure the compiler doesn't
 *          locate any code or variables at his location.
 */
    
    
#if defined ( __CC_ARM )

    uint8_t m_mbr_params_page[CODE_PAGE_SIZE]       __attribute__((at(NRF_MBR_PARAMS_PAGE_ADDRESS))) __attribute__((used));

#elif defined ( __GNUC__ )

    uint8_t m_mbr_params_page[CODE_PAGE_SIZE]       __attribute__ ((section(".mbrParamsPage")));

#elif defined ( __ICCARM__ )

    __no_init uint8_t m_mbr_params_page[CODE_PAGE_SIZE]     @ NRF_MBR_PARAMS_PAGE_ADDRESS;

#else

    #error Not a valid compiler/linker for m_mbr_params_page placement.

#endif


/**@brief   This variable makes the linker script write the mbr parameters page address to the
 *          UICR register. This value will be written in the HEX file and thus written to the
 *          UICR when the bootloader is flashed into the chip.
 */
 
#if defined ( __CC_ARM )
    uint32_t m_uicr_mbr_params_page_address __attribute__((at(NRF_UICR_MBR_PARAMS_PAGE_ADDRESS)))
                                                    = NRF_MBR_PARAMS_PAGE_ADDRESS;

#elif defined ( __GNUC__ )
    volatile uint32_t m_uicr_mbr_params_page_address    __attribute__ ((section(".uicrMbrParamsPageAddress")))
                                                    = NRF_MBR_PARAMS_PAGE_ADDRESS;
#elif defined ( __ICCARM__ )

    __root    const uint32_t m_uicr_mbr_params_page_address @ NRF_UICR_MBR_PARAMS_PAGE_ADDRESS
                                                    = NRF_MBR_PARAMS_PAGE_ADDRESS;

#else

    #error Not a valid compiler/linker for m_mbr_params_page placement.

#endif

#endif // defined ( NRF52 )

RE: can not download app from nRFgo Studio after download bootloader

Chaw — Mon, 06 Feb 2017 00:56:34 GMT

Thanks. But when I mergehex application.hex, it shows:

Parsing input hex files.
Merging files.
ERROR: The hex files cannot be merged since there are conflicts.

Could you merge success?

RE: can not download app from nRFgo Studio after download bootloader

Dave_couling — Sat, 04 Feb 2017 19:57:24 GMT

This is due to a qwerk in the nRFGo Studio software. Its been this way for some time. In order to program the SD, App and Bootloader you need to do the following:

Merge the SD, Bootloader and App into a single hex file.
Validate the Application code so that the Bootloader will jump to the Application
Program this merged+validated image under the Application tab in nRFGoStudio
Crack a beer.

Here's a link to how to merge and validate. devzone.nordicsemi.com/.../ Note that the for the nRF52 using SDK12 the application validation step does not work as stated in the link. You need to use the nrfutil tool to create the validation settings. If you need further help with this step let me know. It should be be documented in the nrfUtil.

Cheers,

RE: can not download app from nRFgo Studio after download bootloader

Chaw — Fri, 03 Feb 2017 00:38:50 GMT

Hi, I have uploaded applicaiton/bootloader project, plz check.

RE: can not download app from nRFgo Studio after download bootloader

bjorn-spockeli — Mon, 30 Jan 2017 12:47:54 GMT

I get the same behaviour as you, but I cannot see any conflicts when I look at the flash after I have the application and bootloaderhex files separatly. Can you upload the zipped project folder for the bootloader and the application so that I can try to build them my self?

RE: can not download app from nRFgo Studio after download bootloader

Chaw — Thu, 26 Jan 2017 02:15:41 GMT

Hi, i have uploaded App, BL and SD, plz help me check.

RE: can not download app from nRFgo Studio after download bootloader

bjorn-spockeli — Wed, 25 Jan 2017 10:34:03 GMT

Have you erased the entire flash using nrfjprog -f nrf52 -e first? Could you upload the application, bootloader and softDevice hex files you're trying to flash to the nRF52?

RE: can not download app from nRFgo Studio after download bootloader

Chaw — Sat, 21 Jan 2017 02:42:26 GMT

Hi, I change application ROM size to 0x54000, but still fail, same error message (Flash is not erase)

RE: can not download app from nRFgo Studio after download bootloader

bjorn-spockeli — Fri, 20 Jan 2017 08:18:55 GMT

The nRF52832 has 512kB (0x80000 bytes) of Flash. If the application starts at 0x1F000 occupies 0x61000 bytes, then there is no room for the bootloader, since 0x1F000 + 0x61000 = 0x80000. Hence, you must adjust the size of the application to make room for the bootloader, i.e. application ROM size = 0x73000 - 0x1F000 = 0x54000.

RE: can not download app from nRFgo Studio after download bootloader

Chaw — Fri, 20 Jan 2017 00:35:38 GMT

bootloader: ROM---- Start: 0x73000 size: 0xB000 RAM---- Start: 0x20002C00 size: 0xD380

application: ROM ----- Start:0x1F000 Size: 0x61000 RAM ----- Start:0x20002138 Size: 0xDEC8

RE: can not download app from nRFgo Studio after download bootloader

bjorn-spockeli — Thu, 19 Jan 2017 09:32:39 GMT

Can you post the ROM and RAM settings for the application and the bootloader?