CubeMX: FreeRTOS USE_TICKLESS_IDLE

[Aaron Pica]

Posted on February 01, 2017 at 16:15

In the last CubeMX version (4.19) the USE_TICKLESS_IDLE option is missing. This disables the configUSE_TICKLESS_IDLE flag and the low power configuration.

Is it a bug? Is any workaround available?

PS: I've checked the 4.17 version and it has this option available. I don't have the 4.18, so I can't check it.

#cubemx #freertos #cubemx-4.19

[Imen.D]

Posted on February 01, 2017 at 17:52

Hi

Pica.Aaron

,

I will check this case and come back to you as soon as possible.

Regards

Imen

[stm32cube-t]

Posted on February 02, 2017 at 12:55

Dear User,

Please go the Config parameters tab.

In the Search field enter TICKLESS, you will be directly pointed to the USE_TICKLESS_IDLE parameter.

See attached snapshot.

________________ Attachments : FreeRTOS_UseTickless.png : https://st--c.eu10.content.force.com/sfc/dist/version/download/?oid=00Db0000000YtG6&ids=0680X000006Hyxm&d=%2Fa%2F0X0000000bET%2Faw2LTXhjjnIzs.32Xbwp82T55vKoaNxkMo3r9e98Bfc&asPdf=false

[Aaron Pica]

Posted on February 02, 2017 at 13:08

Hi

Mondoloni.Pascal

,

I'm sorry, but this is not true in the last version (4.19).

Are you using the last CubeMx version?

Thank you

[FCR · Accepted solution]

Posted on February 02, 2017 at 14:40

Hi,

It's a bug introduced with the support of FreeRTOS v9, to be fixed in the next version (sorry for that mistake).

As a temporary workaround (for 4.19), in the FREERTOS-v8.0.0_Cube_Modes.xml file (part of your CubeMx installation), you can modify the configUSE_TICKLESS_IDLE section (starting around line 814) as follows:

<RefParameter Name='configUSE_TICKLESS_IDLE' Comment='USE_TICKLESS_IDLE' DefaultValue='0' Type='list' Group='Kernel settings' TabName='Config parameters' Visible='true'>

<Condition Diagnostic='' Expression='(S_VERSION_8_2_1|S_VERSION_9_0_0) &amp; INCLUDE_vTaskSuspend=1'/>

<PossibleValue Comment='Disabled' Value='0'/>

<PossibleValue Comment='Enabled' Value='1'/>

<Description>By setting the configUSE_TICKLESS_IDLE, the idle task suppresses ticks and the processor stays in a low power mode for as long as possible.&lt;br&gt;

 When set to 1 (Enabled), two macros, configPRE_SLEEP_PROCESSING and configPOST_SLEEP_PROCESSING are generated in FreeRTOSConfig.h, and two empty functions, PreSleepProcessing and PostSleepProcessing generated in freertos.c (to be completed with user code).</Description>

</RefParameter>

<RefParameter Name='configUSE_TICKLESS_IDLE' Comment='USE_TICKLESS_IDLE' DefaultValue='0' Type='list' Group='Kernel settings' TabName='Config parameters' Visible='true'>

<Condition Diagnostic='Forced to 0 (Disabled) : cannot be enabled when INCLUDE_vTaskSuspend = 0 (Disabled)' Expression='(S_VERSION_8_2_1|S_VERSION_9_0_0) &amp; INCLUDE_vTaskSuspend=0'/>

<PossibleValue Comment='Disabled' Value='0'/>

<Description>By setting the configUSE_TICKLESS_IDLE, the idle task suppresses ticks and the processor stays in a low power mode for as long as possible.</Description>

</RefParameter>

<RefParameter Name='configUSE_TICKLESS_IDLE' Comment='configUSE_TICKLESS_IDLE' DefaultValue='0' Type='integer' Group='Kernel settings' TabName='Config parameters' Visible='false'>

<Description>By setting the configUSE_TICKLESS_IDLE, the idle task suppresses ticks and the processor stays in a low power mode for as long as possible.</Description>

</RefParameter>

Should solve the issue in 4.19 (the parameter is available in both versions, v8 and v9, of FreeRTOS).

As a reminder / for information, in CubeMx 4.19, FreeRTOS v9 is available on F3,F7,L0 series (porting on other series is on-going).

RegardsFred

[Imen.D]

Posted on February 02, 2017 at 13:57

Hi pica.aaron,

This is depends on FreeRTOS version and not CubeMx version:

USE_TICKLESS_IDLE flag is

available with FreeRTOS version 8.2.3, but not in FreeRTOS 9.0.0

[Aaron Pica]

Posted on February 02, 2017 at 15:15

Thank you

CRAISSON.FREDERIC

‌. I've edited the file (located on ...\STMicroelectronics\STM32Cube\STM32CubeMX\db\mcu\IP\ FREERTOS-v8.0.0_Cube_Modes.xml) as you explain and it worked well. I'm using a STM32F7 MCU.

DAHMEN.IMEN

‌, please ensure of the reply before posting. Any misinterpretation can lead to big repercussions.

[Imen.D]

Posted on February 02, 2017 at 18:26

Thank you

CRAISSON.FREDERIC

for your prompt answer/confirmation.

Pica.Aaron

, s

orry for thismisunderstanding. what I meant to say isthatthe bug

just appears withthe

version of

FreeRTOS v9.

Regards

Imen