drivers/dht: busy wait reimplementation

- many backports from @maribu's IRQ based implementation (RIOT-OS#18591) - use of ztimer and errno.h - separation of dht_read() steps into functions for better readability - reintroduction of DHT11/DHT22 differentiation - sensor presence checking in dht_init() - default input mode changed to open drain - AVR support without platform-specific handling by avoiding ztimer_spin() and using the overflow of an 8-bit variable as a pre-timeout to minimize time-consuming ztimer_now() calls - add a new DHT11_2022 type for 0.01 °C resolution devices - data caching removed
hugueslarrive · Jun 20, 2023 · 4c54154 · 4c54154
1 parent 84a3078
commit 4c54154
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Showing 8 changed files with 248 additions and 158 deletions.
diff --git a/drivers/dht/Kconfig b/drivers/dht/Kconfig
@@ -10,7 +10,7 @@ config MODULE_DHT
     depends on HAS_PERIPH_GPIO
     depends on TEST_KCONFIG
     select MODULE_PERIPH_GPIO
-    select MODULE_XTIMER
+    select ZTIMER_USEC
 
 config HAVE_DHT
     bool

diff --git a/drivers/dht/Makefile.dep b/drivers/dht/Makefile.dep
@@ -1,2 +1,2 @@
-USEMODULE += xtimer
+USEMODULE += ztimer_usec
 FEATURES_REQUIRED += periph_gpio