STM32L4xx about ada_drivers_library HOT 6 CLOSED

Hi Hedley,

So you already have the SVD files? Looking at the documentation, it seems like the STM32L4 peripherals are closer to the STM32F7 peripherals... A simple way to know is to try to reuse the STM32F7 drivers with STM32L4 SVD and see if it compiles. If it does there's a good chance that the drivers will work.
If it doesn't you can see how it's done for STM32F4 vs STM32F7 and have specific drivers in a sub directory when needed.

We can help you with the directory and project file hierarchies.

Thanks for looking at this!

from ada_drivers_library.

The zip for all the L4 svd files is on here: http://www.st.com/en/microcontrollers/stm32l432kc.html (look for 'STM32L4 System View Description'). I understand on the dir stuff, thanks for the tip on F7 vs L4. Curr I have a bare minimum elf that gets to the PLL init. Now time to add back the missing bits. There is a cute board I bought for ~$10 (5x1.8cm). Its a Nucleo with a 32 pin(!) 80mhz stm32l432kc on it. Comes with an stlinkV2 too. Openocd 0.10 works fine. It has 256k flash and 64k ram. Enough to run Ada no trouble.

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Fabien, one other Q, how are the i-stm32*.ads files generated? svd.mk handles the arch files but for the embedded-runtimes/bsps? and now, this might expain why the PLL init -> hang(). ;)

from ada_drivers_library.

The i-stm32 packages are in the run-times, they are generated from the same SVD files the difference is the root package used in the SVD2Ada command line:

./svd2ada -p Interfaces.STM32

In Setup_PLL, there's a few busy loops waiting for a clocks to stabilize. If you have a debug link, it should be quick to identify.

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Tnx for the tips Fabien. I got a partial lib built for it. Pll locks off of msi 4mhz int clock, gpio is up, timer untested but Ada realtime works, I2C works, spi untested. I have enough working now to put in my make with Ada project using that tiny platform. Once the lib built clean, I had two minor bugs in my app but none in the lib. Found a couple of svd file errors for the part. Wonder how they validate those files...

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That's awesome!

I will close this issue and wait for your pull requests 😉

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