tree 194ad4969fddc1b3a4f54c049d64f0e7e23bd73b
parent 1d073cc84d5e387dcca250ff75d77c20f735ced0
author Hauke Petersen <hauke.petersen@fu-berlin.de> 1612345728 +0100
committer Hauke Petersen <devel@haukepetersen.de> 1618478705 +0200

npl/riot: rework to use RIOTs ztimer

ztimer is a new high-level timer API in RIOT that was introcuced a
while ago to be the successor of xtimer. This commit reworks the
RIOT NPL implementation to use ztimer instead of xtimer. This
simplifies the NPL implementation and it allows for significant
energy savings.
For the xtimer switch the implemenation further switches from
RIOTs `posix_semaphore` module to the slimmer `sema` module, as the
prior indirectly pulls in xtimer as dependency.