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boards/stm32l0538-disco: add initial support#9517

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fjmolinas merged 3 commits intoRIOT-OS:masterfrom
aabadie:pr/board/stm32l0538-disco
Jul 9, 2019
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boards/stm32l0538-disco: add initial support#9517
fjmolinas merged 3 commits intoRIOT-OS:masterfrom
aabadie:pr/board/stm32l0538-disco

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@aabadie aabadie commented Jul 9, 2018

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This PR adds an initial support for the stm32l0538-disco board.

This board embeds an epaper ink display and I could use it with the U8G2 package.

The board can be flashed via st-link but no UART is directly usable via st-link, so a serial to USB adapter is required for stdio.

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@aabadie aabadie added Type: new feature The issue requests / The PR implemements a new feature for RIOT CI: ready for build If set, CI server will compile all applications for all available boards for the labeled PR Area: boards Area: Board ports labels Jul 9, 2018
@aabadie aabadie force-pushed the pr/board/stm32l0538-disco branch from 5b2295a to 83a8974 Compare July 9, 2018 11:13
@aabadie aabadie force-pushed the pr/board/stm32l0538-disco branch 2 times, most recently from 33fb9b9 to 7c35a13 Compare August 7, 2018 09:33
@aabadie aabadie mentioned this pull request Mar 5, 2019
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fjmolinas commented Mar 8, 2019 •
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@aabadie Looks good, could you lend me this board to test?

@fjmolinas fjmolinas self-requested a review April 19, 2019 12:02
@aabadie aabadie force-pushed the pr/board/stm32l0538-disco branch 6 times, most recently from 1f29ee9 to d6fa4e5 Compare May 30, 2019 21:06
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Ran:

python dist/tools/compile_and_test_for_board/compile_and_test_for_board.py --jobs 1 . stm32l0538-disco
And got:

- [tests/cpp11_condition_variable](tests/cpp11_condition_variable/test.failed)
- [tests/cpp11_mutex](tests/cpp11_mutex/test.failed)
- [tests/cpp11_thread](tests/cpp11_thread/test.failed)
- [tests/periph_eeprom](tests/periph_eeprom/test.failed)
- [tests/periph_flashpage](tests/periph_flashpage/test.failed)
- [tests/periph_gpio](tests/periph_gpio/test.failed)
- [tests/periph_rtc](tests/periph_rtc/test.failed)
- [tests/periph_rtt](tests/periph_rtt/test.failed)
- [tests/pkg_fatfs_vfs](tests/pkg_fatfs_vfs/test.failed)
- [tests/pthread_barrier](tests/pthread_barrier/test.failed)
- [tests/pthread_cooperation](tests/pthread_cooperation/test.failed)
- [tests/rng](tests/rng/test.failed)
- [tests/shell](tests/shell/test.failed)
- [tests/struct_tm_utility](tests/struct_tm_utility/test.failed)
- [tests/thread_cooperation](tests/thread_cooperation/test.failed)

Havent looked into the tests details, Also could you please add a documentation file?

boards/stm32l0538-disco/include/board.h Outdated
* @file
* @brief Board specific definitions for the STM32L0538-DISCO evaluation board.
*
* @author Alexabdre Abadie <[email protected]>
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@fjmolinas fjmolinas Jun 21, 2019 •
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Typo here on name

@aabadie aabadie force-pushed the pr/board/stm32l0538-disco branch 2 times, most recently from d8d249e to 400becc Compare June 28, 2019 15:12
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aabadie commented Jun 28, 2019

I had a look at this one. For periph_rtc and rtt, actually the board doesn't provide an external LSE, so I had to use a custom clock configuration and no the shared L0 one.

For the other tests, for some I had to blacklist the board, for others there are working (e.g. shell, periph_gpio, rng, struct_tm_utility, periph_eeprom, periph_flashpage). I don't know what happened for those ones.

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boards/stm32l0538-disco/include/periph_conf.h Outdated
#define PERIPH_CONF_H

#include "periph_cpu.h"
#include "cfg_rtt_default.h"
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This is not valid, it is calculated based on the CLK beeing 32Khz, but here it is 37Khz. I created a branch to patch this https://github.com/fjmolinas/RIOT/tree/pr_stm32_rtt_lsi.

The problem is the test still fails because LSI isn't very precise it can have a pretty big deviation around 37KhZ.

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You are right and your branch is useful and should be PRed I think.

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I know see what I probably did wrong on my first go, I had the rx pin miss placed. All the tests are passing now except for tests/periph_rtt.

About rtt I don't know what to do in this case, even applying my branch code, the test wont pass because LSI isn't precise enough. I think in this case we might exclude the test from the CI because the frequency has to be measured externally.

I would still add the feature but document that when using LSI manual calibration must be done. The other option is just dropping rtt. What do you think?

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fjmolinas commented Jul 5, 2019

Also the documentation needs improving.

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aabadie commented Jul 5, 2019

I would still add the feature but document that when using LSI manual calibration must be done. The other option is just dropping rtt. What do you think?

I would drop it for simplicity and until LSI based RTT is correctly supported. What do you mean with manual calibration ?

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fjmolinas commented Jul 5, 2019

I would drop it for simplicity and until LSI based RTT is correctly supported. What do you mean with manual calibration ?

You would need to measure the actual frequency and change it in the code.

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fjmolinas commented Jul 5, 2019

I would drop it for simplicity and until LSI based RTT is correctly supported.

Ok go ahead and drop it, I didn't PR the RTT changes because I still need to improve some corner cases. Squash right away.

@aabadie aabadie force-pushed the pr/board/stm32l0538-disco branch 2 times, most recently from 55d832c to 9de7371 Compare July 5, 2019 16:01
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aabadie commented Jul 5, 2019

Removed the RTT feature and added some documentation. Squashed and rebased.

@aabadie aabadie force-pushed the pr/board/stm32l0538-disco branch from 9de7371 to adc8faa Compare July 5, 2019 16:07
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Travis is complaining about a trailing whitespace. Otherwise ACK!

@fjmolinas fjmolinas removed the CI: ready for build If set, CI server will compile all applications for all available boards for the labeled PR label Jul 8, 2019
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fjmolinas commented Jul 8, 2019

@aabadie when you fix the whitespace squash directly.

@aabadie aabadie force-pushed the pr/board/stm32l0538-disco branch from adc8faa to 39fae03 Compare July 8, 2019 07:07
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aabadie commented Jul 8, 2019

when you fix the whitespace squash directly.

done

@fjmolinas fjmolinas added the CI: ready for build If set, CI server will compile all applications for all available boards for the labeled PR label Jul 8, 2019
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ACK

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fjmolinas commented Jul 8, 2019

@aabadie Do you have time for one last commit? there is still a test with oveflowing RAM

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tests: exclude stm32l0538-disco board
4ac2b4e 
because of insufficient memory available
@aabadie aabadie force-pushed the pr/board/stm32l0538-disco branch from 39fae03 to 4ac2b4e Compare July 8, 2019 19:50
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fjmolinas commented Jul 9, 2019

@aabadie Thanks! All green with this one, GO!

@fjmolinas fjmolinas merged commit ba5106d into RIOT-OS:master Jul 9, 2019
@aabadie aabadie deleted the pr/board/stm32l0538-disco branch August 4, 2019 14:09
@kb2ma kb2ma added this to the Release 2019.10 milestone Sep 16, 2019
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