[riot-notifications] [RIOT-OS/RIOT] drivers/dose: make use of start condition received interrupt (#16506)

benpicco notifications at github.com
Fri May 28 00:06:48 CEST 2021


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### Contribution description

DOSE can make use of a GPIO to detect the start condition, however some UARTs already have this capability build in and can generate an interrupt when a start condition is detected.

Implement this feature for the sam0 family and make use of it in the DOSE driver.


### Testing procedure

DOSE should perform just as well without the extra wire / GPIO with this feature enabled. (not sure how to verify this)

### Issues/PRs references

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You can view, comment on, or merge this pull request online at:

  https://github.com/RIOT-OS/RIOT/pull/16506

-- Commit Summary --

  * drivers/periph/uart: add periph_uart_rx_start feature
  * cpu/sam0_common: implement periph_uart_rx_start feature
  * drivers/dose: make use of periph_uart_rx_start feature

-- File Changes --

    M cpu/sam0_common/Kconfig (1)
    M cpu/sam0_common/Makefile.features (1)
    M cpu/sam0_common/periph/uart.c (40)
    M drivers/dose/Makefile.dep (1)
    M drivers/dose/dose.c (60)
    M drivers/dose/include/dose_params.h (5)
    M drivers/include/dose.h (4)
    M drivers/include/periph/uart.h (43)
    M kconfigs/Kconfig.features (5)

-- Patch Links --

https://github.com/RIOT-OS/RIOT/pull/16506.patch
https://github.com/RIOT-OS/RIOT/pull/16506.diff

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