[PATCH rtems 6/6] bsps/imxrt: Add imxrt1166_cm7_saltshaker BSP

[oss at c-mauderer.de]

Hello Jacob,

Am 14.07.23 um 09:08 schrieb Christian MAUDERER:
> Hello Jacob,
> 
> On 2023-07-14 08:36, Christian MAUDERER wrote:
>> Hello Jacob,
>>
>> On 2023-07-13 18:59, Jacob Killelea wrote:
>>> Hi Christian,
>>>
>>> This looks awesome! Do you have any interest in adding support for 
>>> the i.MXRT1062 based Teensy 4.0 and Teensy 4.1?
>>>
>>> - Jacob
>>
>> the Teensy look like interesting boards. Maybe a bit low on memory. 
>> That would make it difficult to run libbsd on them. The boards don't 
>> have network, so it's not a problem for the network part. But on the 
>> i.MXRT, I also use the MMC/SD stack from libbsd so the SD card would 
>> be a problem.
>>
> 
> Just noted: The Teensy 4.1 has an optional Ethernet. So some network 
> library would be good. But like I said: The target has too few memory 
> for libbsd. lwIP would be a candidate. But I haven't tried that on the 
> i.MXRT yet.
> 
> Best regards
> 
> Christian

It was mean from you to point me to that board. It seems like an 
interesting challenge ;)

I've thrown together a quick prototype for a BSP. It's not yet tested. 
It doesn't even link the tests yet, because the linker command file 
isn't adapted yet. But the BSP sources at least compile without problems:

   https://gitlab.com/c-mauderer/rtems/-/tree/cm/20230717_teensy41

If I find some more time and maybe some hardware, I maybe continue to 
try to write the linker command file. But I don't promise anything ;-)

Best regards

Christian

> 
>> On the Teensy 4.1, the two memories (optional Flash and optional 
>> PSRAM) on the FlexSPI maybe can be a bit tricky.
>>
>> These boards would be pure hobby time. I don't think that I will find 
>> enough time to fully support the boards at the moment. But I would 
>> expect that the basics should work with the i.MXRT1052 BSP already. 
>> The 1050 and 1060 family is quite similar. If you want, I can give you 
>> some guidance what would be necessary to support the boards.
>>
>> Best regards
>>
>> Christian
>