Adds a FreeRTOS-Plus-TCP module.

[mikewolfram]

Fixes part of #447.

[mikewolfram]

I also have the require NetworkInterface.c file, but would add that in the PR of the ETH driver.

[mikewolfram]

Oh, and I have -Werror=format enabled, which let's the build fail. Not sure if I rather remove it from my build or add a patch to fix the line in FreeRTOS TCP.

[salkinium]

Not sure if I rather remove it from my build or add a patch to fix the line in FreeRTOS TCP.

You can add a patch file to the freertos-partial repo and make update.py patch it. I do this for modm-devices too.

[mikewolfram]

Working on it I was thinking to add something like

#if defined __has_include
#if __has_include(<FreeRTOSIPConfigLocal.h>)
#include <FreeRTOSIPConfigLocal.h>
#endif
#endif

This would allow the user to add additional defines for FreeRTOS TCP. Or maybe better use a collector in the project.xml file? How would that look like and how to get them into FreeRTOSIPConfig.h?

[mikewolfram]

What is needed to get this checks pass?

[rleh]

What is needed to get this checks pass?

Log: https://circleci.com/api/v1.1/project/github/modm-io/modm/20914/output/103/0?file=true&allocation-id=5f45582fa6592e387c3f81cd-0-build%2F172F83F4

Error generating documentation for device stm32f103c8t6: In Module 'modm:freertos:tcp': File or directory not found!
In file '../../root/project/ext/aws/module.lb:37' in function 'build':
        env.copy("freertos/FreeRTOS-Plus-TCP", "freertos_plus_tcp",

You can run the test locally: python3 tools/scripts/docs_modm_io_generator.py -t -c -j4

[mikewolfram]

I know. But since that is the result of another pull request, how do I get it into this one? Update the submodule and commit?

[rleh]

Yes, you have to update and commit the submodule ext/aws/freertos.

[mikewolfram]

Yes, you have to update and commit the submodule ext/aws/freertos.

It shows my private repository master branch and I cannot get it changed. Help!!!

[salkinium]

I've squashed your commits.

This would allow the user to add additional defines for FreeRTOS TCP. Or maybe better use a collector in the project.xml file? How would that look like and how to get them into FreeRTOSIPConfig.h?

This is great idea, so I added this to both configs. Please check if this works for you, then I'd like to merge this PR.

(lbuild collectors are only useful when additional side-effects from modm are required, for example, the build system flags are reformatted into the specific build systems. For this, it's completely overkill, your solution is way better.)

[mikewolfram]

Is it ok to assume that the compile has the __has_include() function? What if not?

[salkinium]

Is it ok to assume that the compile has the __has_include() function? What if not?

Yes, it's part of C++17 and both GCC and LLVM have it implemented.

[salkinium]

I've removed the options and added some documentation, does this work for you?

[mikewolfram]

Now a test is failing, what is wrong?

Fixed.

[salkinium]

Now a test is failing, what is wrong?

The arm-eabi-gcc download link isn't working in the CI. It's working for me locally, so I'm just going to ignore it for now.

[salkinium]

(The macOS CI is not part of the required tests, since it has been proven a bit unreliable.)