rp2: Add support for DHT11 and DHT22 sensors.

drivers/dht/dht.py

@@ -7,6 +7,8 @@ if sys.platform.startswith("esp"):
     from esp import dht_readinto
 elif sys.platform == "mimxrt":
     from mimxrt import dht_readinto
+elif sys.platform == "rp2":
+    from rp2 import dht_readinto
 else:
     from pyb import dht_readinto
 

ports/rp2/CMakeLists.txt

@@ -79,6 +79,7 @@ set(MICROPY_SOURCE_LIB
 
 set(MICROPY_SOURCE_DRIVERS
     ${MICROPY_DIR}/drivers/bus/softspi.c
+    ${MICROPY_DIR}/drivers/dht/dht.c
 )
 
 set(MICROPY_SOURCE_PORT

ports/rp2/boards/manifest.py

@@ -1,4 +1,5 @@
 freeze("$(PORT_DIR)/modules")
 freeze("$(MPY_DIR)/drivers/onewire")
+freeze("$(MPY_DIR)/drivers/dht", "dht.py")
 include("$(MPY_DIR)/extmod/uasyncio/manifest.py")
 include("$(MPY_DIR)/drivers/neopixel/manifest.py")

ports/rp2/modrp2.c

@@ -25,6 +25,7 @@
  */
 
 #include "py/runtime.h"
+#include "drivers/dht/dht.h"
 #include "modrp2.h"
 
 STATIC const mp_rom_map_elem_t rp2_module_globals_table[] = {
@@ -32,6 +33,8 @@ STATIC const mp_rom_map_elem_t rp2_module_globals_table[] = {
     { MP_ROM_QSTR(MP_QSTR_Flash),               MP_ROM_PTR(&rp2_flash_type) },
     { MP_ROM_QSTR(MP_QSTR_PIO),                 MP_ROM_PTR(&rp2_pio_type) },
     { MP_ROM_QSTR(MP_QSTR_StateMachine),        MP_ROM_PTR(&rp2_state_machine_type) },
+
+    { MP_ROM_QSTR(MP_QSTR_dht_readinto),        MP_ROM_PTR(&dht_readinto_obj) },
 };
 STATIC MP_DEFINE_CONST_DICT(rp2_module_globals, rp2_module_globals_table);