Hi.
I have a BLE peripheral app for the nRF51822. I'm using SDK 12.1.0 with SD 130 v2.0.1 and gcc. I'm implementing DFU OTA at the moment and I notice there are two builds of the example bootloader_secure app for each board, eg. one called pca10028 and another called pca10028_debug. The debug one includes logging statements and so on, so we can use it to debug a bootloader that's not working, I presume. I've managed to get the size of my application down to the point where I have room for it along with the debug bootloader.
To flash my board, I use separate calls to nrfproj, one for each hex file, in my Makefile, like this:
flash: all
$(NRFPROJ) --eraseall
$(NRFPROJ) --program $(SOFTDEVICE)
$(NRFPROJ) --program bootloader/biketracker_debug/armgcc/_build/bootloader_s130.hex
$(NRFPROJ) --program $(HEX)
$(NRFPROJ) --reset
I can flash my application along with the NON debug bootloader, but not with the debug one.
eliot-macbook-pro:biketracker-firmware Eliot$ make flash
/Users/Eliot/dev/nRF5x_tools/nrfjprog/nrfjprog -f NRF51 -c 1000 --eraseall
Erasing code and UICR flash areas.
Applying system reset.
/Users/Eliot/dev/nRF5x_tools/nrfjprog/nrfjprog -f NRF51 -c 1000 --program /Users/Eliot/dev/nRF5_SDK_12.1.0_0d23e2a/components/softdevice/s130/hex/s130_nrf51_2.0.1_softdevice.hex
Parsing hex file.
Reading flash area to program to guarantee it is erased.
Checking that the area to write is not protected.
Programing device.
/Users/Eliot/dev/nRF5x_tools/nrfjprog/nrfjprog -f NRF51 -c 1000 --program bootloader/biketracker_debug/armgcc/_build/bootloader_s130.hex
Parsing hex file.
Reading flash area to program to guarantee it is erased.
Checking that the area to write is not protected.
Programing device.
/Users/Eliot/dev/nRF5x_tools/nrfjprog/nrfjprog -f NRF51 -c 1000 --program _build/biketracker_app_s130.hex
Parsing hex file.
Reading flash area to program to guarantee it is erased.
ERROR: The area to write is not erased.
make: *** [flash] Error 58
If I try to merge the hex files for my application and the debug bootloader, that also fails, confirming there's a conflict somewhere in memory, but not where:
eliot-macbook-pro:biketracker-firmware Eliot$ /Users/Eliot/dev/nRF5x_tools/mergehex/mergehex --merge bootloader/biketracker_debug/armgcc/_build/bootloader_s130.hex _build/biketracker_app_s130.hex -o merged.hex
Parsing input hex files.
Merging files.
ERROR: The hex files cannot be merged since there are conflicts.
Here's the linker script for the NON debug bootloader:
/* Linker script to configure memory regions. */
SEARCH_DIR(.)
GROUP(-lgcc -lc -lnosys)
MEMORY
{
/** Flash start address for the bootloader. This setting will also be stored in UICR to allow the
* MBR to init the bootloader when starting the system. This value must correspond to
* BOOTLOADER_REGION_START found in dfu_types.h. The system is prevented from starting up if
* those values do not match. The check is performed in main.c, see
* APP_ERROR_CHECK_BOOL(*((uint32_t *)NRF_UICR_BOOT_START_ADDRESS) == BOOTLOADER_REGION_START);
*
* Currently ~18.6 kB, leaving 128.4 kB for the application.
*/
FLASH (rx) : ORIGIN = 0x3AC00, LENGTH = 0x5000 /* end: 0x3FC00, length: 20 kB */
/** RAM Region for bootloader. This setting is suitable when used with s110, s120, s130, s310. */
RAM (rwx) : ORIGIN = 0x20002C00, LENGTH = 0x5380
/** Location of non initialized RAM. Non initialized RAM is used for exchanging bond information
* from application to bootloader when using buttonluss DFU OTA.
*/
NOINIT (rwx) : ORIGIN = 0x20007F80, LENGTH = 0x80
/** Location of bootloader setting in at the last flash page. */
BOOTLOADER_SETTINGS (rw) : ORIGIN = 0x0003FC00, LENGTH = 0x0400
/** Location in UICR where bootloader start address is stored. */
UICR_BOOTLOADER (r) : ORIGIN = 0x10001014, LENGTH = 0x04
}
SECTIONS
{
/* Ensures the bootloader settings are placed at the last flash page. */
.bootloaderSettings(NOLOAD) :
{
} > BOOTLOADER_SETTINGS
/* Ensures the Bootloader start address in flash is written to UICR when flashing the image. */
.uicrBootStartAddress :
{
KEEP(*(.uicrBootStartAddress))
} > UICR_BOOTLOADER
/* No init RAM section in bootloader. Used for bond information exchange. */
.noinit(NOLOAD) :
{
} > NOINIT
/* other placements follow here... */
}
SECTIONS
{
. = ALIGN(4);
.fs_data :
{
PROVIDE(__start_fs_data = .);
KEEP(*(.fs_data))
PROVIDE(__stop_fs_data = .);
} > RAM
. = ALIGN(4);
.svc_data :
{
PROVIDE(__start_svc_data = .);
KEEP(*(.svc_data))
PROVIDE(__stop_svc_data = .);
} > RAM
. = ALIGN(4);
.dfu_trans :
{
PROVIDE(__start_dfu_trans = .);
KEEP(*(.dfu_trans))
PROVIDE(__stop_dfu_trans = .);
} > RAM
} INSERT AFTER .data
INCLUDE "nrf51_common.ld"
and the same for the debug bootloader:
/* Linker script to configure memory regions. */
SEARCH_DIR(.)
GROUP(-lgcc -lc -lnosys)
MEMORY
{
/** Flash start address for the bootloader. This setting will also be stored in UICR to allow the
* MBR to init the bootloader when starting the system. This value must correspond to
* BOOTLOADER_REGION_START found in dfu_types.h. The system is prevented from starting up if
* those values do not match. The check is performed in main.c, see
* APP_ERROR_CHECK_BOOL(*((uint32_t *)NRF_UICR_BOOT_START_ADDRESS) == BOOTLOADER_REGION_START);
*
* Currently ~30.5 kB, leaving ~116.5 kB for the application.
*/
FLASH (rx) : ORIGIN = 0x37800, LENGTH = 0x7C00 /* end: 0x3F400, length: 31 kB */
/** RAM Region for bootloader. This setting is suitable when used with s110, s120, s130, s310. */
RAM (rwx) : ORIGIN = 0x20002C00, LENGTH = 0x5380
/** Location of non initialized RAM. Non initialized RAM is used for exchanging bond information
* from application to bootloader when using buttonluss DFU OTA.
*/
NOINIT (rwx) : ORIGIN = 0x20007F80, LENGTH = 0x80
/** Location of bootloader setting in at the last flash page. */
BOOTLOADER_SETTINGS (rw) : ORIGIN = 0x0003FC00, LENGTH = 0x0400
/** Location in UICR where bootloader start address is stored. */
UICR_BOOTLOADER (r) : ORIGIN = 0x10001014, LENGTH = 0x04
}
SECTIONS
{
/* Ensures the bootloader settings are placed at the last flash page. */
.bootloaderSettings(NOLOAD) :
{
} > BOOTLOADER_SETTINGS
/* Ensures the Bootloader start address in flash is written to UICR when flashing the image. */
.uicrBootStartAddress :
{
KEEP(*(.uicrBootStartAddress))
} > UICR_BOOTLOADER
/* No init RAM section in bootloader. Used for bond information exchange. */
.noinit(NOLOAD) :
{
} > NOINIT
/* other placements follow here... */
}
SECTIONS
{
. = ALIGN(4);
.fs_data :
{
PROVIDE(__start_fs_data = .);
KEEP(*(.fs_data))
PROVIDE(__stop_fs_data = .);
} > RAM
. = ALIGN(4);
.svc_data :
{
PROVIDE(__start_svc_data = .);
KEEP(*(.svc_data))
PROVIDE(__stop_svc_data = .);
} > RAM
. = ALIGN(4);
.dfu_trans :
{
PROVIDE(__start_dfu_trans = .);
KEEP(*(.dfu_trans))
PROVIDE(__stop_dfu_trans = .);
} > RAM
} INSERT AFTER .data
INCLUDE "nrf51_common.ld"
And here are the hex files for each bootloader:
Where is the conflict? I don't see it.
Edit 1
And the linker script for the application. Note that the experimental_ble_app_buttonless_dfu example application has no .bootloaderSettings section and subsequently doesn't work. I've tried to make it work here.
SEARCH_DIR(.)
GROUP(-lgcc -lc -lnosys)
MEMORY
{
/* Total flash: 256 kB (0x40000) */
/* BUILD_PROD, larger */
/* FLASH (rx) : ORIGIN = 0x1B000, LENGTH = 0x20F00 */ /* end: 0x3BF00, length: 131.75kB */
/* BUILD_DFU_TEST, 114 kB */
FLASH (rx) : ORIGIN = 0x1B000, LENGTH = 0x1C800 /* end: 0x37800, length: 114 kB */
/* Total RAM: 32 kB (0x8000) */
/* The Soft Device can tell us what it needs here at runtime. Run "make test" and expect a warning when we enable the SD. See:
<SDK>/softdevice/common/softdevice_handler/softdevice_handler.c L486.
*/
RAM (rwx) : ORIGIN = 0x20002008, LENGTH = 0x5FF8 /* just under 24 kB */
/** Location of non initialized RAM. Non initialized RAM is used for exchanging bond information
* from application to bootloader when using buttonluss DFU OTA.
*/
NOINIT (rwx) : ORIGIN = 0x20007F80, LENGTH = 0x80
/** Location of bootloader setting in at the last flash page. */
BOOTLOADER_SETTINGS (rw) : ORIGIN = 0x0003FC00, LENGTH = 0x0400
/** Location in UICR where bootloader start address is stored. */
UICR_BOOTLOADER (r) : ORIGIN = 0x10001014, LENGTH = 0x04
}
/* This is copied over from the bootloader verbatim. */
SECTIONS
{
/* Ensures the bootloader settings are placed at the last flash page. */
.bootloaderSettings(NOLOAD) :
{
} > BOOTLOADER_SETTINGS
/* Ensures the Bootloader start address in flash is written to UICR when flashing the image. */
.uicrBootStartAddress :
{
KEEP(*(.uicrBootStartAddress))
} > UICR_BOOTLOADER
/* No init RAM section in bootloader. Used for bond information exchange. */
.noinit(NOLOAD) :
{
} > NOINIT
/* other placements follow here... */
}
SECTIONS
{
.fs_data :
{
PROVIDE(__start_fs_data = .);
KEEP(*(.fs_data))
PROVIDE(__stop_fs_data = .);
} > RAM
} INSERT AFTER .data;
/* This is in <SDK>/components/toolchain/gcc. */
INCLUDE "nrf51_common.ld"
