nRF51822 over the air bootloader with gcc

RE: nRF51822 over the air bootloader with gcc

Eliot Stock — Sun, 05 Apr 2015 13:45:16 GMT

I agree that it's really disappointing the lack of support for gcc and non-Windows development platforms in SDK 8.0.0 from Nordic.

RE: nRF51822 over the air bootloader with gcc

Nikita — Sun, 03 Aug 2014 05:12:39 GMT

R0 will contain start_addr from bootloader_util_app_start(start_addr) call.

RE: nRF51822 over the air bootloader with gcc

MichaelVPI — Sat, 02 Aug 2014 00:00:32 GMT

I don't think StartApplication(uint32_t start_addr) will work if it is declared as inline. R0 will likely not contain the start_addr.

RE: nRF51822 over the air bootloader with gcc

Nikita — Wed, 30 Jul 2014 13:21:24 GMT

In your file you have Keil's attribute((at(...))), but you need attribute((section ("..."))). Or maybe you uploaded wrong file in attached project archive?

RE: nRF51822 over the air bootloader with gcc

Oleh — Wed, 30 Jul 2014 08:07:05 GMT

well, let me try it first :-)

RE: nRF51822 over the air bootloader with gcc

Oleh — Wed, 30 Jul 2014 08:05:39 GMT

ov, thanks! I've got the file.

but, the only difference is the ".ALIGN" in the asm code of StartApplication(...) the rest is the same, or am I missing something?

RE: nRF51822 over the air bootloader with gcc

Nikita — Wed, 30 Jul 2014 07:41:38 GMT

Delete < p/> at the end of the link in address line when you follow the link.

RE: nRF51822 over the air bootloader with gcc

Oleh — Wed, 30 Jul 2014 06:02:51 GMT

Nikita thanks! can you please repost the attachment? the link is broken (probably as with other attachments after upgrade).

Or an inline as a comment. thank you!

RE: nRF51822 over the air bootloader with gcc

Nikita — Wed, 30 Jul 2014 03:20:15 GMT

Oh, yes, I was mistaken. Then your bootloader_util.c file is wrong. You need this code (see my post above): devzone.nordicsemi.com/.../ab329cfaabef19c4978335ab51dc1e1c

RE: nRF51822 over the air bootloader with gcc

Oleh — Tue, 29 Jul 2014 22:23:24 GMT

thanks for replying Nikita, the content of bootloader_util.c is the same, there are both arm and gcc pieces.

RE: nRF51822 over the air bootloader with gcc

EL45 — Mon, 28 Jul 2014 16:04:34 GMT

Joe, could you please add a link to download this again? I have been searching high and low to find a working bootloader solution w/gcc and have yet to succeed.

RE: nRF51822 over the air bootloader with gcc

Nikita — Thu, 24 Jul 2014 17:04:22 GMT

Wrong file in Makefile: C_SOURCE_FILES += bootloader_util.c But you need this file: C_SOURCE_FILES += bootloader_util_gcc.c

RE: nRF51822 over the air bootloader with gcc

Oleh — Wed, 23 Jul 2014 05:11:40 GMT

yes, I could compile and run hrs and other examples.

RE: nRF51822 over the air bootloader with gcc

Joe Merten — Wed, 23 Jul 2014 00:29:15 GMT

Attach the console output of your make, please. Have you successfully compiled & ran e.g hrs example?

RE: nRF51822 over the air bootloader with gcc

Oleh — Tue, 22 Jul 2014 21:57:03 GMT

Dear all,

I have somewhat strange DFU behaviour, the bootloader starts and advertises, connection is also possible, but as soon as I press "Upload" it fails. I couldnt debug it while in the SoftDevice.

Tried both ios apps "nRF Loader" and DFU from "nRF Toolbox", also same failer with hex or bin file. With the sniffer I can see some packages sent, the progressbar goes to 1% and then "asserts"/fails.

Anyone has had similar issue?

Here is my env: s110_nrf51822_6.0.0_softdevice.hex nrf51_sdk_v5_2_0_39364 is used, on the DevKit nrg6310 board.

my src zip is attached, I read again and again this thread, seems to have all your comments in. Or am I missing something? DFU_GCC_OL.zip

EDIT: make log file attached

RE: nRF51822 over the air bootloader with gcc

Nikita — Thu, 10 Jul 2014 17:13:24 GMT

adam, read this: devzone.nordicsemi.com/.../

RE: nRF51822 over the air bootloader with gcc

Nikita — Thu, 10 Jul 2014 17:01:17 GMT

Well, it's because it's two memory variables m_boot_settings and m_uicr_bootloader_start_address i.e. initialized data, so it displayed as such. In Joe Merten's code he doesn't initialize this sections, so it don't displayed in any section. I have only this version of his code: BleblGcc-V2.zip devzone.nordicsemi.com/.../91147761347a17943df78d3a4bf1fc24

RE: nRF51822 over the air bootloader with gcc

Gerry — Thu, 10 Jul 2014 08:46:52 GMT

I try to modify the code based on Nikita's method,

uint8_t __attribute__((section (".bootloader_settings_sect"))) m_boot_settings[CODE_PAGE_SIZE] __attribute__((used));
uint32_t __attribute__((section (".NRF_UICR_BOOT_START_SECT"))) m_uicr_bootloader_start_address = BOOTLOADER_REGION_START;

and in the linkscript, I modified like this,

MEMORY
{
  FLASH (rx) : ORIGIN = 0x0003C000, LENGTH = 0x3C00
  bootloader_settings (rwx) : ORIGIN = 0x0003FC00, LENGTH = 0x400
  NRF_UICR_BOOT_START (rwx) : ORIGIN = 0x10001014, LENGTH = 0x4
  RAM (rwx) :  ORIGIN = 0x20002000, LENGTH = 0x2000
}

And the following code is added to the common link script,

.bootloader_settings_block 0x0003FC00 :
{
	KEEP(*(.bootloader_settings_sect))
} > bootloader_settings

.NRF_UICR_BOOT_START_BLOCK 0x10001014 :
{
	KEEP(*(.NRF_UICR_BOOT_START_SECT))
} > NRF_UICR_BOOT_START

but seems that the bootloader_settings section is treated as a .data section, will it consume real memory ? I checked the map file, seems the real .data section only consumes one thunder bytes of memory.

  text    data     bss     dec     hex
 12197    1128    4728   18053    4685

Anyone has the same issue?

BTW, I cannot find Joe Merten's code from this page, could anyone help to put it to this page again? Thanks a lot!

RE: nRF51822 over the air bootloader with gcc

adam — Wed, 09 Jul 2014 01:19:44 GMT

First of all thanks for excellent job done in porting Nordic software to GCC compiler. Unfortunately I did not manage to build successfully bootloader. I used s/w provided in drix-bldr.zip which is a git clone from the huckym@bitbucket.org/.../nrf51822-dev.git at commit cf31b7059134e80d939985e86772e46027d1f430. Next I did required changes to the Makefile in order to build and load the software on my Ubuntu Linux host. I installed GCC ARM Embedded toolchain gcc-arm-none-eabi-4_8-2013q4 and run make. All Makefile tasks completed OK. But after inspecting the build directory I found out that the binary file produced is 256Mbytes!!! in size: drix-bldr$ ls build/ -l total 128 -rwxrwxr-x 1 cza cza 268195864 Jul 9 10:10 drix-bldr.bin -rw-rw-r-- 1 cza cza 45622 Jul 9 10:10 drix-bldr.hex -rwxrwxr-x 1 cza cza 91649 Jul 9 10:10 drix-bldr.out

Can someone please help me understand what did I do wrong and what shall I do to build successfully bootloader on my Linux machine?

RE: nRF51822 over the air bootloader with gcc

Gerry — Thu, 26 Jun 2014 07:30:11 GMT

Hi Cagri, I am also suffering the issue that I could not find the attached zip file. I searched the whole page and cannot find the file from Joe (Files from other guys can be found). Could you help me to point out the place? Thanks!

RE: nRF51822 over the air bootloader with gcc

tim — Wed, 25 Jun 2014 16:49:30 GMT

Nikita, Can you please Attach the Makefile for this nRF51822_BLE_DFU project.

RE: nRF51822 over the air bootloader with gcc

Joe Merten — Tue, 24 Jun 2014 09:40:15 GMT

Yep, -flto is sometimes a bit aggressive. I'd solved that by adding attribute((used)) to some ..._IRQHandler(). (Yes, it unfortunately requires to patch the Sdk sources.)

RE: nRF51822 over the air bootloader with gcc

Nikita — Sat, 21 Jun 2014 08:17:51 GMT

Thanks for the update info. I have one question: how did you compile your code with -flto flag? Did you change SDK files to add attribute ((used, section(".Vectors"))) to the IRQ handlers (GPIOTE_IRQHandler, RTC1_IRQHandler, SWI0_IRQHandler, SWI2_IRQHandler)? I tried to compile with -flto flag and compiler discards of this handlers without adding this attribute. So I refrained from changing SDK files for now.

RE: nRF51822 over the air bootloader with gcc

Cagri Tanriover — Thu, 12 Jun 2014 21:43:32 GMT

Never mind my former question Joe. I found it. It was in the same location whereas I was looking at the bottom to spot a recent update :) :)

Many thanks!

Regards...

RE: nRF51822 over the air bootloader with gcc

Cagri Tanriover — Thu, 12 Jun 2014 18:50:15 GMT

Hi Joe,

Thanks for your message. Where did you attach the new zip file? I could not find it.

Regards