ble freertos - ble_lbs_on_button_change unknown function

RE: ble freertos - ble_lbs_on_button_change unknown function

Susheel Nuguru — Wed, 28 Nov 2018 08:48:03 GMT

I am not sure why the hooks did not get triggered. something with the logger task using too much memory which needs investigation i guess. But without the logger task, did everything work normally?

RE: ble freertos - ble_lbs_on_button_change unknown function

jardis — Tue, 27 Nov 2018 22:38:34 GMT

Hi Susheel,

obviously there is some problem, when also "LogTask" is running.

It is true, that if you turn it off, the other task (and the idle task) will run "normally".

But just increase of heap size, doesn't help.

I am not an expert for the FreeRTOS, but I believe, that task stack is allocated from HEAP.

Even if you increase the heap and increase the allocated LOG task stack it doesn't help (and there is plenty of RAM available)

And all this settings are the same in debug and release (but the alignment of the code is different as there are different optimizations involved).

I also enabled:

#define configCHECK_FOR_STACK_OVERFLOW 1
#define configUSE_MALLOC_FAILED_HOOK 1

in FreeRTOSConfig.h and appropriate functions in main.c:

void vApplicationMallocFailedHook (void)
void vApplicationStackOverflowHook( xTaskHandle *pxTask, signed char *pcTaskName )

but I never capture any of upper errors.

RE: ble freertos - ble_lbs_on_button_change unknown function

Susheel Nuguru — Mon, 26 Nov 2018 12:08:40 GMT

Hi Jardis,

I took your main.c and I could see the hardfault. This was because of the stack corruption as the logs were using too much of the free stack.

I disabled the logs in sdk_config.h file

and also doubled the below in FreeRTOSConfig.h file

#define configTOTAL_HEAP_SIZE ( 4096 * 2 )

no more hardfaults after this

RE: ble freertos - ble_lbs_on_button_change unknown function

jardis — Thu, 22 Nov 2018 21:03:50 GMT

It works with your hex - I left the the softdevice from my project.

I also tried with the latest SDK - 15.2.0 - the same error - now I get some more data about Hardfault and it is UNALIGNED MEMORY ACCESS.

The log is:

<info> app: BLE Blinky FreeRTOS example started.
<info> app: Fast advertising.
<info> app: BLE EVT Handler: 16
<info> app: Connected
<info> app: BLE EVT Handler: 80
<info> app: led_write_handler
<info> app: Received LED ON!
<info> app: BLE EVT Handler: 80
<info> app: On conn params evtr
<info> app: BLE EVT Handler: 18
<info> app: Button pressed
<info> app: Send button state change 1.
<info> app: On button event handler exit - code is.
<info> app: 0
<error> hardfault: HARD FAULT at 0x0002BEC6
<error> hardfault: R0: 0xDB681B4B R1: 0x00000979 R2: 0x200070C8 R3: 0x200070C8
<error> hardfault: R12: 0x20006D68 LR: 0x0002BEB9 PSR: 0x8100000E
<error> hardfault: Cause: The processor has made an unaligned memory access.
<info> app: gatt_init
<info> app: BLE Blinky FreeRTOS example started.
<info> app: Fast advertising.

The I tried the latest Segger Embedded Studio - did not work.

Then I changed Code options for Unaligned Access Support. - no luck.

Then I changed optimization level to 3 (for Release) and it worked.

Then I also changed Configuration to Debug - and optimization level is Debug (probably 0 ?) and it also worked.

Then I set back to Release and Opt. Level to None and get the same error again.

So basically now I have working option, but I am not totally satisfied as I do not know exactly why this error occurs.

RE: ble freertos - ble_lbs_on_button_change unknown function

Jørgen Holmefjord — Thu, 22 Nov 2018 14:12:49 GMT

Attached compiled hex file for PCA10056. Can you test it on your board? devzone.nordicsemi.com/.../ble_5F00_app_5F00_blinky_5F00_freertos_5F00_pca10056_5F00_s140.hex (remember to also flash the softdevice, as it is not merged with the application)

RE: ble freertos - ble_lbs_on_button_change unknown function

Jørgen Holmefjord — Wed, 21 Nov 2018 19:33:30 GMT

Have you tested with a fresh copy of the SDK, just to make sure there is no changed library files? I will send you compiled hex-files tomorrow that is working on my bord. This way we can test if there is something with the enviroment or something else that is wrong.

RE: ble freertos - ble_lbs_on_button_change unknown function

jardis — Wed, 21 Nov 2018 18:07:28 GMT

I just got new HW - this time nRF52 DK (pca10040 v1.2.4 2018/38).

Build the same project with S132 (s132_nrf52_6.0.0_softdevice.hex) and the same problem is still there.

RE: ble freertos - ble_lbs_on_button_change unknown function

jardis — Thu, 08 Nov 2018 21:35:33 GMT

SDK 15.0.0. - s140_nrf52_6.0.0_softdevice.hex

nRF52840 PDK v091 (2017.14)

SEGGER Embedded Studio for ARM Release 3.40 Build 2018052200.36079 Windows x64

Samsung GTI-9300 Android 4.3, but it is the same with IPhone 6s.iOS12.01 (the status of led after connection is also wrong on Android and iPhone)

I will order the latest DK and try with latest SDK.

RE: ble freertos - ble_lbs_on_button_change unknown function

Jørgen Holmefjord — Thu, 08 Nov 2018 10:25:10 GMT

This is the output I get from the log when running your example (switched between notifications enabled and disabled in the middle):

<info> app: HRS FreeRTOS example started.
<info> app: Fast advertising.
<info> app: BLE EVT Handler: 16
<info> app: Connected
<info> app: BLE EVT Handler: 18
<info> app: BLE EVT Handler: 18
<info> app: BLE EVT Handler: 80
<info> app: On conn params evtr
<info> app: BLE EVT Handler: 18
<info> app: Button pressed
<info> app: Send button state change 1.
<info> app: On button event handler exit - code is.
<info> app: 0
<info> app: Button pressed
<info> app: Send button state change 1.
<info> app: On button event handler exit - code is.
<info> app: 0
<info> app: BLE EVT Handler: 87
<info> app: BLE EVT Handler: 87
<info> app: Button pressed
<info> app: Send button state change 1.
<info> app: On button event handler exit - code is.
<info> app: 0
<info> app: Button pressed
<info> app: Send button state change 1.
<info> app: On button event handler exit - code is.
<info> app: 0
<info> app: BLE EVT Handler: 87
<info> app: BLE EVT Handler: 87
<info> app: Button pressed
<info> app: Send button state change 1.
<info> app: On button event handler exit - code is.
<info> app: 0
<info> app: Button pressed
<info> app: Send button state change 1.
<info> app: On button event handler exit - code is.
<info> app: 0
<info> app: BLE EVT Handler: 87
<info> app: BLE EVT Handler: 87
<info> app: Button pressed
<info> app: Send button state change 1.
<info> app: On button event handler exit - code is.
<info> app: 0
<info> app: Button pressed
<info> app: Send button state change 1.
<info> app: On button event handler exit - code is.
<info> app: 0
<info> app: BLE EVT Handler: 87
<info> app: Button pressed
<info> app: Send button state change 1.
<info> app: On button event handler exit - code is.
<info> app: 0
<info> app: BLE EVT Handler: 87
<info> app: Button pressed
<info> app: Send button state change 1.
<info> app: On button event handler exit - code is.
<info> app: 0
<info> app: BLE EVT Handler: 87
<info> app: Button pressed
<info> app: Send button state change 1.
<info> app: On button event handler exit - code is.
<info> app: 0
<info> app: Button pressed
<info> app: Send button state change 1.
<info> app: On button event handler exit - code is.
<info> app: 0
<info> app: BLE EVT Handler: 87
<info> app: BLE EVT Handler: 87
<info> app: BLE EVT Handler: 87
<info> app: BLE EVT Handler: 80
<info> app: Button pressed
<info> app: Send button state change 1.
<info> app: On button event handler exit - code is.
<info> app: 8
<info> app: Button pressed
<info> app: Send button state change 1.
<info> app: On button event handler exit - code is.
<info> app: 8
<info> app: Button pressed
<info> app: Send button state change 1.
<info> app: On button event handler exit - code is.
<info> app: 8
<info> app: Button pressed
<info> app: Send button state change 1.
<info> app: On button event handler exit - code is.
<info> app: 8
<info> app: Button pressed
<info> app: Send button state change 1.
<info> app: On button event handler exit - code is.
<info> app: 8
<info> app: Button pressed
<info> app: Send button state change 1.
<info> app: On button event handler exit - code is.
<info> app: 8
<info> app: Button pressed
<info> app: Send button state change 1.
<info> app: On button event handler exit - code is.
<info> app: 8
<info> app: Button pressed
<info> app: Send button state change 1.
<info> app: On button event handler exit - code is.
<info> app: 8
<info> app: Button pressed
<info> app: Send button state change 1.
<info> app: On button event handler exit - code is.
<info> app: 8
<info> app: Button pressed
<info> app: Send button state change 1.
<info> app: On button event handler exit - code is.
<info> app: 8
<info> app: BLE EVT Handler: 80
<info> app: Button pressed
<info> app: Send button state change 1.
<info> app: On button event handler exit - code is.
<info> app: 0
<info> app: Button pressed
<info> app: Send button state change 1.
<info> app: On button event handler exit - code is.
<info> app: 0
<info> app: BLE EVT Handler: 87
<info> app: Button pressed
<info> app: Send button state change 1.
<info> app: On button event handler exit - code is.
<info> app: 0
<info> app: Button pressed
<info> app: Send button state change 1.
<info> app: On button event handler exit - code is.
<info> app: 0
<info> app: BLE EVT Handler: 87
<info> app: BLE EVT Handler: 87
<info> app: BLE EVT Handler: 87
<info> app: Button pressed
<info> app: Send button state change 1.
<info> app: On button event handler exit - code is.
<info> app: 0
<info> app: Button pressed
<info> app: Send button state change 1.
<info> app: On button event handler exit - code is.
<info> app: 0
<info> app: BLE EVT Handler: 87
<info> app: Button pressed
<info> app: Send button state change 1.
<info> app: On button event handler exit - code is.
<info> app: 0
<info> app: Button pressed
<info> app: Send button state change 1.
<info> app: On button event handler exit - code is.
<info> app: 0
<info> app: BLE EVT Handler: 87
<info> app: BLE EVT Handler: 87
<info> app: BLE EVT Handler: 87
<info> app: Button pressed
<info> app: Send button state change 1.
<info> app: On button event handler exit - code is.
<info> app: 0
<info> app: Button pressed
<info> app: Send button state change 1.
<info> app: On button event handler exit - code is.
<info> app: 0
<info> app: BLE EVT Handler: 87
<info> app: BLE EVT Handler: 87
<info> app: Button pressed
<info> app: Send button state change 1.
<info> app: On button event handler exit - code is.
<info> app: 0
<info> app: Button pressed
<info> app: Send button state change 1.
<info> app: On button event handler exit - code is.
<info> app: 0
<info> app: BLE EVT Handler: 87
<info> app: BLE EVT Handler: 87

Which SDK version are you using?
Which nRF52840 (P)DK version are you using?
Which SES version are you using?
Which phone/central are you connecting with?

RE: ble freertos - ble_lbs_on_button_change unknown function

jardis — Wed, 07 Nov 2018 20:50:49 GMT

Hi,

I use nRF Blinky App on Android to connect and press button 0 on the board.

I added some additional NRF LOG outputs and it can be seen

NRF LOG shows:

As it can be seen from this log, the device restarts after return from button event handler - it goes to HardFault_process.

In debug mode the Output is: "Stopped by vector catch"

What should be values for FLASH and RAM (start and size) in linker?

RE: ble freertos - ble_lbs_on_button_change unknown function

Jørgen Holmefjord — Tue, 06 Nov 2018 10:35:55 GMT

I'm not able to reproduce this issue with your code. If notifications is enabled, the error code is SUCCESS. If notifications are not enabled, I get error code 8 (INVALID_STATE) but this error code is ignored.

Are you doing anything specific to trigger the error?

RE: ble freertos - ble_lbs_on_button_change unknown function

jardis — Mon, 05 Nov 2018 23:12:51 GMT

devzone.nordicsemi.com/.../ble_5F00_app_5F00_blinky_5F00_freertos.zip

RE: ble freertos - ble_lbs_on_button_change unknown function

jardis — Fri, 26 Oct 2018 16:16:11 GMT

Will do, but i am out of office right know - returning in a good week

RE: ble freertos - ble_lbs_on_button_change unknown function

Jørgen Holmefjord — Fri, 19 Oct 2018 09:27:55 GMT

Can you upload the entire project? If you do that, I can much more easily help you debug the issue.

RE: ble freertos - ble_lbs_on_button_change unknown function

jardis — Wed, 17 Oct 2018 18:02:11 GMT

Yes I did.

From sd_ble_gatts_hvx(conn_handle, &params) in ble_lbs_on_button_change I get the error 0 (using nrf log).

From other windows nothing useful:

Call stack is showing:

unknown function

void PendSV_Handler

And the output window: Stopped by vector catch.

Also no event on ble_evt_handler.

RE: ble freertos - ble_lbs_on_button_change unknown function

Jørgen Holmefjord — Wed, 17 Oct 2018 14:41:02 GMT

Hi,

It sounds like you are getting an error code that is putting the application into the error handler. Have you tried debugging the application to get the error code and which function is returning the error?

Best regards,
Jørgen