LP-AM243: FreeRTOS-POSIX, C++, std::future, std::mutex, std::chrono, std::this_thread, std::thread, std::condition_variable

Jonas Reich

Prodigy 70 points

Part Number: LP-AM243

Dear TI support,

I use and LP-AM243x Evaluation Board with the SDK "mcu_plus_sdk_am243x_08_02_00_31".

I used an empty FreeRtos project with all Cores, but only use the r5fss0-0 Core yet.

For this Core I implemented the FreeRtos-Posix support.

Now I want to implement c++ Code which use this functions:

std::future, std::mutex, std::chrono, std::this_thread, std::thread, std::condition_variable, etc.

For my purporse I need this functions.

Do you have any freertos-addon or somthing that make this function work on my system?

over 3 years ago

0 Ming Wei over 3 years ago

TI__Guru 55155 points

Hi Jonas,

The only FreeRTOS-POSIX example in MCU+ SDK is examples\kernel\freertos\posix_demo. It is not implemented in C++. To use the POSIX in C++, you may try the following:

Noticed there is an Language Options in CCS project properties where you can select the C++ language standard (-std), such as "C++ 98", "C++ 03" etc. You may want give it a try.

Best regards,

Ming

0 Jonas Reich over 3 years ago in reply to Ming Wei

Prodigy 70 points

Sry i dont mean to use the Posix in C++.

The FreeRtos-Posix work like it should be.

I want to implement a Mapper which is written in C++ and this Mapper use this functions:

std::future, std::mutex, std::chrono, std::this_thread, std::thread, std::condition_variable, etc.

I selected the C++14 in the project settings, but I cannot compile the project with my Mapper because the functions I mentioned below are not be found in the standard library.

Best regards,

Jonas Reich

0 Ming Wei over 3 years ago in reply to Jonas Reich

TI__Guru 55155 points

Hi Jonas,

Unfortunately the C++ lib in TI CLANG does not support the std::thread etc. Please refer to the following thread for details: (+) LP-AM243: TI armclang: Why is std::unique_lock not implemented? - Arm-based microcontrollers forum - Arm-based microcontrollers - TI E2E support forums

Best regards,

Ming

0 Jonas Reich over 3 years ago in reply to Ming Wei

Prodigy 70 points

Hallo Ming Wei,

thank you for your answer. In the link TI says that this functionalities are on the roadmap.

Do you have any information on which date this functionalities should be released?

In the meantime, do you have information about alternative Solutions to solve this issue?

Best regards,

Jonas Reich

+1 Ming Wei over 3 years ago in reply to Jonas Reich

TI__Guru 55155 points

Hi Jonas,

I do not see existing JIRA ticket for adding this feature. I will file a JIRA ticket for adding this feature. Because this feature has to involve multiple BUs, so I do not think it will be implemented in near future.

Best regards,

Ming

0 Jonas Reich over 3 years ago in reply to Ming Wei

Prodigy 70 points

Hello Ming Wei,

thank you for creating a JIRA ticket for this problem.

Best regards,

Jonas Reich

0 Ming Wei over 3 years ago in reply to Jonas Reich

TI__Guru 55155 points

Hi Jonas,

Here is the JIRA ticket for adding this feature: MCUREQ-1204. Would you mind close this thread? Thanks!

Ming