[riot-notifications] [RIOT-OS/RIOT] cc26xx_cc13xx: add periph_i2c implementation (#14128)

Jean Pierre Dudey notifications at github.com
Sun May 24 19:50:54 CEST 2020

### Contribution description

The CC26xx/CC13xx MCUs have only a single I2C interface, and has not changed between x0/x2 revisions, it's exactly the same (the SDK is using the same exact code).

Only 100 kHz mode is supported, fast mode (400 kHz) is up to another PR.

### Testing procedure

- `cc26x0` boards should still have a working I2C (no code is touched in reality).
- `cc26x2`/`cc13x2` boards _should_ be able to run `tests/periph_i2c` correctly with a known working device. Please note that this device has weak pull-up resistors and sometimes you'll get address nacks.
Details steps to test your contribution:
- which test/example to compile for which board and is there a 'test' command
- how to know that it was not working/available in master
- the expected success test output

### Issues/PRs references


cc @luisan00, could you check if the pins for CC1352P launchpad are good?
You can view, comment on, or merge this pull request online at:


-- Commit Summary --

  * cpu/cc26x0: move i2c code to cc26xx_cc13xx
  * boards/cc1312-launchpad: add I2C configuration
  * boards/cc1352-launchpad: add I2C configuration
  * boards/cc2650-launchpad: add I2C configuration

-- File Changes --

    M boards/cc1312-launchpad/Makefile.features (1)
    M boards/cc1312-launchpad/include/periph_conf.h (9)
    M boards/cc1352-launchpad/Makefile.features (1)
    M boards/cc1352-launchpad/include/periph_conf.h (9)
    M boards/cc1352p-launchpad/Makefile.features (1)
    M boards/cc1352p-launchpad/include/periph_conf.h (9)
    R cpu/cc26xx_cc13xx/periph/i2c.c (2)

-- Patch Links --


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