On Thursday, 30 April 2015 at 06:43:18 UTC, Timo Sintonen wrote:
{snip}
I think it is possible to make a minimum bare metal runtime
from scratch.
{snip}
Yes I think it won't be too difficult.
All are good points that we should have in mind, while deciding
on how we proceed.
-Also Mike's input is valuable. I agree with both of you.
Mike, Timo, Martin and Johannes:
Here's what I planned a few week ago ...
1: Get the toolchain working for Cortex-M0, Cortex-M3 and
Cortex-M4. (Done, thanks to you).
2: Create a bunch of startup files for different devices as an
appetizer. (Done, but ongoing)
3: Create a linker-script suitable for the casual MCU programmer.
(Almost done)
4: Create a simple Makefile as an example. (Pending)
5: Create a set of files, which can be shared across all MCUs
(for instance containing the *int*_t) types. This could later
grow to a bare-metal druntime. (Pending)
6: Create a couple of driver files for one of the STM32
microcontrollers. (Pending)
7: Create a complete example project, similar to those already
written in C, which demonstrates that it can be done completely
in D.
...
10: Present this to Reinhard Keil, as the ARM Keil tools now use
LLVM. I am sure Reinhard will find the D language intriguing. But
as he is very busy, I would like to wait until I have a fully
functioning example, which shows that D is now ready for
microcontrollers.
If step 10 is done too early, it might not be as appealing as if
we have a working demo.
Mike, Timo and I all have different "approaches" and "needs".
We can definitely use this to our benefit. D)iversity is great. =D
I have the impression that Martin seems to have a good overview
and also knowledge about different MCUs.
