Temperature and humidity sensor support

ROMFS/px4fmu_common/init.d/rc.sensors

@@ -130,6 +130,13 @@ then
 	fi
 fi
 
+# SHT3x temperature and hygrometer sensor, external I2C
+if param compare -s SENS_EN_SHT3X 1
+then
+	sht3x start -X
+	sht3x start -X -a 0x45
+fi
+
 # TE MS4525 differential pressure sensor external I2C
 if param compare -s SENS_EN_MS4525 1
 then

boards/px4/fmu-v5/default.px4board

@@ -15,6 +15,7 @@ CONFIG_COMMON_DISTANCE_SENSOR=y
 CONFIG_DRIVERS_DSHOT=y
 CONFIG_DRIVERS_GPS=y
 CONFIG_DRIVERS_HEATER=y
+CONFIG_HYGROMETERS=y
 CONFIG_DRIVERS_IMU_ANALOG_DEVICES_ADIS16448=y
 CONFIG_DRIVERS_IMU_BOSCH_BMI055=y
 CONFIG_DRIVERS_IMU_INVENSENSE_ICM20602=y
@@ -81,8 +82,8 @@ CONFIG_MODULES_UUV_ATT_CONTROL=y
 CONFIG_MODULES_UUV_POS_CONTROL=y
 CONFIG_MODULES_VMOUNT=y
 CONFIG_MODULES_VTOL_ATT_CONTROL=y
-CONFIG_SYSTEMCMDS_BL_UPDATE=y
 CONFIG_SYSTEMCMDS_ACTUATOR_TEST=y
+CONFIG_SYSTEMCMDS_BL_UPDATE=y
 CONFIG_SYSTEMCMDS_DMESG=y
 CONFIG_SYSTEMCMDS_DUMPFILE=y
 CONFIG_SYSTEMCMDS_GPIO=y

src/drivers/drv_sensor.h

@@ -198,6 +198,7 @@
 
 #define DRV_GPS_DEVTYPE_SIM 0xAF
 
+#define DRV_HYGRO_DEVTYPE_SHT3X 0xB1
 
 #define DRV_DEVTYPE_UNUSED		0xff
 

src/drivers/hygrometer/Kconfig

@@ -0,0 +1,9 @@
+menu "Hygrometers"
+    menuconfig HYGROMETERS
+        bool "Hygrometer sensors"
+        default n
+        select DRIVERS_HYGROMETER_SHT3x
+        ---help---
+            Enable default set of hygrometer sensors
+    rsource "*/Kconfig"
+endmenu #Hygrometers

src/drivers/hygrometer/sht3x/CMakeLists.txt

@@ -0,0 +1,43 @@
+############################################################################
+#
+#   Copyright (c) 2021 PX4 Development Team. All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in
+#    the documentation and/or other materials provided with the
+#    distribution.
+# 3. Neither the name PX4 nor the names of its contributors may be
+#    used to endorse or promote products derived from this software
+#    without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+#
+############################################################################
+
+px4_add_module(
+	MODULE drivers__hygrometer__sht3x
+	MAIN sht3x
+	COMPILE_FLAGS
+	SRCS
+		sht3x.cpp
+		sht3x.h
+	DEPENDS
+		px4_work_queue
+	)

src/drivers/hygrometer/sht3x/Kconfig

@@ -0,0 +1,5 @@
+menuconfig DRIVERS_HYGROMETER_SHT3x
+	bool "SHT3x temperature and humidity sensor"
+	default n
+	---help---
+		Enable support SHT35 temperature/humidity sensor