19212: shell/rtc: use rtc_tm_normalize() to sanitize input r=benpicco a=benpicco
19360: gcoap: make use coap_build_reply() in gcoap_resp_init() r=benpicco a=benpicco
19401: shell/cmds: add genfile command r=benpicco a=benpicco
19645: sys/isrpipe: Replace xtimer with ztimer_usec r=benpicco a=MrKevinWeiss
### Contribution description
Getting ready for the xtimer dep.
### Testing procedure
Green murdock, there is no explicit test for isrpipe but since it runs xtimer compat it should operate the same.
### Issues/PRs references
19720: tests: remove unnecessary use of floating point r=benpicco a=benpicco
Co-authored-by: Benjamin Valentin <benjamin.valentin@bht-berlin.de>
Co-authored-by: Benjamin Valentin <benjamin.valentin@ml-pa.com>
Co-authored-by: MrKevinWeiss <weiss.kevin604@gmail.com>
Co-authored-by: Benjamin Valentin <benpicco@beuth-hochschule.de>
19693: sys/color: extend unittest and fix module r=maribu a=kfessel
### Contribution description
this extends the unittest for sys_color testing more colors
### Testing procedure
```
RIOT_tree/tests/unittests$ make tests-color test
```
will fail since our `rgb2hsv` implementation is wrong (or is using an other colorspace than hsv2rgb (without documenting))
the new `hsv2rgb` test will succeed
### Issues/PRs references
#19614 was the reason i had a look at this
#1315 added the rgb2hsv and hsv2rgb function
#9940 added the test for black special case
https://www.vagrearg.org/content/hsvrgb << some optimization for that function (avoiding float)
Co-authored-by: Karl Fessel <karl.fessel@ovgu.de>
19686: sys/string_utils: add memchk() r=maribu a=benpicco
19687: tests/unittests: remove old workaround for SAML1X and gcc9.X bug r=maribu a=dylad
### Contribution description
This reverts #13462, this workaround is no longer needed with newer GCC version.
### Testing procedure
Try to compile tests/unittests for `saml11-xpro` or `saml10-xpro`
### Issues/PRs references
This is a revert of #13462.
Co-authored-by: Benjamin Valentin <benjamin.valentin@ml-pa.com>
Co-authored-by: Dylan Laduranty <dylan.laduranty@mesotic.com>
19610: drivers/periph/rtc: improve doc on rtc_set_alarm r=maribu a=maribu
### Contribution description
- point out behavior on denormalized time stamps
- use errno codes to indicate errors (and adapt the few instances of actual error handling to use them)
19670: cpu/stm32: stm32f4 BRR from BSRR r=maribu a=kfessel
### Contribution description
sometimes one wants to save one instruction :)
just write the bits we need to write.
### Testing procedure
tests/periph/gpio_ll tests this
### Issues/PRs references
`@maribu` might know some reference
maybe #19407
19678: gnrc_sixlowpan_iphc: fix NULL pointer dereference r=maribu a=miri64
19679: gnrc_sixlowpan_frag_sfr: fix ARQ scheduler race-condition r=maribu a=miri64
19680: gnrc_sixlowpan_frag_rb: fix OOB write in _rbuf_add r=maribu a=miri64
19681: sys/xtimer: improve documentation r=maribu a=maribu
### Contribution description
- Add a warning that xtimer is deprecated, so that new code hopefully starts using ztimer
- Add a hint that `ztimer_xtimer_compat` can be used even after `xtimer` is gone
Co-authored-by: Marian Buschsieweke <marian.buschsieweke@ovgu.de>
Co-authored-by: Karl Fessel <karl.fessel@ovgu.de>
Co-authored-by: Martine Lenders <m.lenders@fu-berlin.de>
- Add a deprecation note to xtimer, so that new code hopefully
starts using ztimer
- Add a hint that `ztimer_xtimer_compat` can be used even after `xtimer`
is gone
