From bb9075f7bafed47d8dafbe2796a59d6757561842 Mon Sep 17 00:00:00 2001
From: Jan Mrna <mj370@protonmail.com>
Date: Tue, 14 Jun 2022 21:15:22 +0200
Subject: [PATCH] Added sht4x library

---
 .gitmodules                      |  6 +++
 fw/.cproject                     | 37 +++++++++++-------
 fw/Core/Inc/sht4x.h              | 57 ---------------------------
 fw/Core/Src/main.c               | 34 ++++++++++++++++
 fw/Core/Src/sht4x.c              | 67 --------------------------------
 fw/Libs/sht4x                    |  1 +
 fw/iaq_wired_sensor Debug.launch |  2 +-
 7 files changed, 65 insertions(+), 139 deletions(-)
 create mode 100644 .gitmodules
 delete mode 100644 fw/Core/Inc/sht4x.h
 delete mode 100644 fw/Core/Src/sht4x.c
 create mode 160000 fw/Libs/sht4x

diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..c44e139
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,6 @@
+[submodule "fw/Libs/--force"]
+	path = fw/Libs/--force
+	url = git@gitlab.com:VelesLabs/stm32libs/sht4x.git
+[submodule "fw/Libs/sht4x"]
+	path = fw/Libs/sht4x
+	url = git@gitlab.com:VelesLabs/stm32libs/sht4x.git
diff --git a/fw/.cproject b/fw/.cproject
index 51ffe1b..33a9011 100644
--- a/fw/.cproject
+++ b/fw/.cproject
@@ -29,6 +29,9 @@
 								<option IS_BUILTIN_EMPTY="false" IS_VALUE_EMPTY="false" id="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.assembler.option.definedsymbols.757865890" name="Define symbols (-D)" superClass="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.assembler.option.definedsymbols" valueType="definedSymbols">
 									<listOptionValue builtIn="false" value="DEBUG"/>
 								</option>
+								<option IS_BUILTIN_EMPTY="false" IS_VALUE_EMPTY="false" id="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.assembler.option.includepaths.1572529382" name="Include paths (-I)" superClass="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.assembler.option.includepaths" valueType="includePath">
+									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/${ProjName}/Libs/sht4x}&quot;"/>
+								</option>
 								<inputType id="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.assembler.input.366934534" superClass="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.assembler.input"/>
 							</tool>
 							<tool id="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.c.compiler.632390373" name="MCU GCC Compiler" superClass="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.c.compiler">
@@ -55,6 +58,7 @@
 									<listOptionValue builtIn="false" value="../Drivers/STM32L0xx_HAL_Driver/Inc"/>
 									<listOptionValue builtIn="false" value="../Drivers/CMSIS/Device/ST/STM32L0xx/Include"/>
 									<listOptionValue builtIn="false" value="../Drivers/CMSIS/Include"/>
+									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/${ProjName}/Libs/sht4x}&quot;"/>
 								</option>
 								<inputType id="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.c.compiler.input.c.1544503170" superClass="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.c.compiler.input.c"/>
 							</tool>
@@ -83,6 +87,7 @@
 					<sourceEntries>
 						<entry flags="VALUE_WORKSPACE_PATH|RESOLVED" kind="sourcePath" name="Core"/>
 						<entry flags="VALUE_WORKSPACE_PATH|RESOLVED" kind="sourcePath" name="Drivers"/>
+						<entry flags="VALUE_WORKSPACE_PATH" kind="sourcePath" name="Libs/sht4x"/>
 					</sourceEntries>
 				</configuration>
 			</storageModule>
@@ -104,21 +109,24 @@
 				<configuration artifactExtension="elf" artifactName="${ProjName}" buildArtefactType="org.eclipse.cdt.build.core.buildArtefactType.exe" buildProperties="org.eclipse.cdt.build.core.buildArtefactType=org.eclipse.cdt.build.core.buildArtefactType.exe,org.eclipse.cdt.build.core.buildType=org.eclipse.cdt.build.core.buildType.release" cleanCommand="rm -rf" description="" id="com.st.stm32cube.ide.mcu.gnu.managedbuild.config.exe.release.781650198" name="Release" parent="com.st.stm32cube.ide.mcu.gnu.managedbuild.config.exe.release">
 					<folderInfo id="com.st.stm32cube.ide.mcu.gnu.managedbuild.config.exe.release.781650198." name="/" resourcePath="">
 						<toolChain id="com.st.stm32cube.ide.mcu.gnu.managedbuild.toolchain.exe.release.1954020355" name="MCU ARM GCC" superClass="com.st.stm32cube.ide.mcu.gnu.managedbuild.toolchain.exe.release">
-							<option id="com.st.stm32cube.ide.mcu.gnu.managedbuild.option.target_mcu.1791773732" superClass="com.st.stm32cube.ide.mcu.gnu.managedbuild.option.target_mcu" useByScannerDiscovery="true" value="STM32L031G6Ux" valueType="string"/>
-							<option id="com.st.stm32cube.ide.mcu.gnu.managedbuild.option.target_cpuid.1379739425" superClass="com.st.stm32cube.ide.mcu.gnu.managedbuild.option.target_cpuid" useByScannerDiscovery="false" value="0" valueType="string"/>
-							<option id="com.st.stm32cube.ide.mcu.gnu.managedbuild.option.target_coreid.892262605" superClass="com.st.stm32cube.ide.mcu.gnu.managedbuild.option.target_coreid" useByScannerDiscovery="false" value="0" valueType="string"/>
-							<option id="com.st.stm32cube.ide.mcu.gnu.managedbuild.option.target_board.1892826908" superClass="com.st.stm32cube.ide.mcu.gnu.managedbuild.option.target_board" useByScannerDiscovery="false" value="genericBoard" valueType="string"/>
-							<option id="com.st.stm32cube.ide.mcu.gnu.managedbuild.option.defaults.1537311264" superClass="com.st.stm32cube.ide.mcu.gnu.managedbuild.option.defaults" useByScannerDiscovery="false" value="com.st.stm32cube.ide.common.services.build.inputs.revA.1.0.5 || Release || false || Executable || com.st.stm32cube.ide.mcu.gnu.managedbuild.option.toolchain.value.workspace || STM32L031G6Ux || 0 || 0 || arm-none-eabi- || ${gnu_tools_for_stm32_compiler_path} || ../Drivers/CMSIS/Include | ../Core/Inc | ../Drivers/STM32L0xx_HAL_Driver/Inc | ../Drivers/CMSIS/Device/ST/STM32L0xx/Include ||  ||  || HSE_VALUE=8000000 | HSE_STARTUP_TIMEOUT=100 | HSI_VALUE=16000000 | LSE_STARTUP_TIMEOUT=5000 | LSE_VALUE=32768 | DATA_CACHE_ENABLE=1 | LSI_VALUE=37000 | MSI_VALUE=2097000 | VDD_VALUE=3300 | INSTRUCTION_CACHE_ENABLE=1 | STM32L031xx | USE_FULL_LL_DRIVER | PREFETCH_ENABLE=0 ||  || Drivers | Core/Startup | Core ||  ||  || ${workspace_loc:/${ProjName}/STM32L031G6UX_FLASH.ld} || true || NonSecure ||  || secure_nsclib.o ||  || None || " valueType="string"/>
+							<option id="com.st.stm32cube.ide.mcu.gnu.managedbuild.option.target_mcu.1791773732" name="MCU" superClass="com.st.stm32cube.ide.mcu.gnu.managedbuild.option.target_mcu" useByScannerDiscovery="true" value="STM32L031G6Ux" valueType="string"/>
+							<option id="com.st.stm32cube.ide.mcu.gnu.managedbuild.option.target_cpuid.1379739425" name="CPU" superClass="com.st.stm32cube.ide.mcu.gnu.managedbuild.option.target_cpuid" useByScannerDiscovery="false" value="0" valueType="string"/>
+							<option id="com.st.stm32cube.ide.mcu.gnu.managedbuild.option.target_coreid.892262605" name="Core" superClass="com.st.stm32cube.ide.mcu.gnu.managedbuild.option.target_coreid" useByScannerDiscovery="false" value="0" valueType="string"/>
+							<option id="com.st.stm32cube.ide.mcu.gnu.managedbuild.option.target_board.1892826908" name="Board" superClass="com.st.stm32cube.ide.mcu.gnu.managedbuild.option.target_board" useByScannerDiscovery="false" value="genericBoard" valueType="string"/>
+							<option id="com.st.stm32cube.ide.mcu.gnu.managedbuild.option.defaults.1537311264" name="Defaults" superClass="com.st.stm32cube.ide.mcu.gnu.managedbuild.option.defaults" useByScannerDiscovery="false" value="com.st.stm32cube.ide.common.services.build.inputs.revA.1.0.5 || Release || false || Executable || com.st.stm32cube.ide.mcu.gnu.managedbuild.option.toolchain.value.workspace || STM32L031G6Ux || 0 || 0 || arm-none-eabi- || ${gnu_tools_for_stm32_compiler_path} || ../Drivers/CMSIS/Include | ../Core/Inc | ../Drivers/STM32L0xx_HAL_Driver/Inc | ../Drivers/CMSIS/Device/ST/STM32L0xx/Include ||  ||  || HSE_VALUE=8000000 | HSE_STARTUP_TIMEOUT=100 | HSI_VALUE=16000000 | LSE_STARTUP_TIMEOUT=5000 | LSE_VALUE=32768 | DATA_CACHE_ENABLE=1 | LSI_VALUE=37000 | MSI_VALUE=2097000 | VDD_VALUE=3300 | INSTRUCTION_CACHE_ENABLE=1 | STM32L031xx | USE_FULL_LL_DRIVER | PREFETCH_ENABLE=0 ||  || Drivers | Core/Startup | Core ||  ||  || ${workspace_loc:/${ProjName}/STM32L031G6UX_FLASH.ld} || true || NonSecure ||  || secure_nsclib.o ||  || None || " valueType="string"/>
 							<targetPlatform archList="all" binaryParser="org.eclipse.cdt.core.ELF" id="com.st.stm32cube.ide.mcu.gnu.managedbuild.targetplatform.1782859951" isAbstract="false" osList="all" superClass="com.st.stm32cube.ide.mcu.gnu.managedbuild.targetplatform"/>
-							<builder buildPath="${workspace_loc:/iaq_wired_sensor}/Release" id="com.st.stm32cube.ide.mcu.gnu.managedbuild.builder.1634455695" managedBuildOn="true" name="Gnu Make Builder.Release" parallelBuildOn="true" parallelizationNumber="optimal" superClass="com.st.stm32cube.ide.mcu.gnu.managedbuild.builder"/>
+							<builder buildPath="${workspace_loc:/iaq_wired_sensor}/Release" id="com.st.stm32cube.ide.mcu.gnu.managedbuild.builder.1634455695" keepEnvironmentInBuildfile="false" managedBuildOn="true" name="Gnu Make Builder" parallelBuildOn="true" parallelizationNumber="optimal" superClass="com.st.stm32cube.ide.mcu.gnu.managedbuild.builder"/>
 							<tool id="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.assembler.1354085929" name="MCU GCC Assembler" superClass="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.assembler">
-								<option id="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.assembler.option.debuglevel.375884652" superClass="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.assembler.option.debuglevel" value="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.assembler.option.debuglevel.value.g0" valueType="enumerated"/>
+								<option id="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.assembler.option.debuglevel.375884652" name="Debug level" superClass="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.assembler.option.debuglevel" value="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.assembler.option.debuglevel.value.g0" valueType="enumerated"/>
+								<option IS_BUILTIN_EMPTY="false" IS_VALUE_EMPTY="false" id="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.assembler.option.includepaths.700537390" name="Include paths (-I)" superClass="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.assembler.option.includepaths" valueType="includePath">
+									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/${ProjName}/Libs/sht4x}&quot;"/>
+								</option>
 								<inputType id="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.assembler.input.1707174983" superClass="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.assembler.input"/>
 							</tool>
 							<tool id="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.c.compiler.35876175" name="MCU GCC Compiler" superClass="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.c.compiler">
-								<option id="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.c.compiler.option.debuglevel.2107783365" superClass="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.c.compiler.option.debuglevel" useByScannerDiscovery="false" value="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.c.compiler.option.debuglevel.value.g0" valueType="enumerated"/>
-								<option id="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.c.compiler.option.optimization.level.227778796" superClass="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.c.compiler.option.optimization.level" useByScannerDiscovery="false" value="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.c.compiler.option.optimization.level.value.os" valueType="enumerated"/>
-								<option IS_BUILTIN_EMPTY="false" IS_VALUE_EMPTY="false" id="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.c.compiler.option.definedsymbols.10117233" superClass="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.c.compiler.option.definedsymbols" useByScannerDiscovery="false" valueType="definedSymbols">
+								<option id="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.c.compiler.option.debuglevel.2107783365" name="Debug level" superClass="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.c.compiler.option.debuglevel" useByScannerDiscovery="false" value="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.c.compiler.option.debuglevel.value.g0" valueType="enumerated"/>
+								<option id="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.c.compiler.option.optimization.level.227778796" name="Optimization level" superClass="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.c.compiler.option.optimization.level" useByScannerDiscovery="false" value="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.c.compiler.option.optimization.level.value.os" valueType="enumerated"/>
+								<option IS_BUILTIN_EMPTY="false" IS_VALUE_EMPTY="false" id="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.c.compiler.option.definedsymbols.10117233" name="Define symbols (-D)" superClass="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.c.compiler.option.definedsymbols" useByScannerDiscovery="false" valueType="definedSymbols">
 									<listOptionValue builtIn="false" value="STM32L031xx"/>
 									<listOptionValue builtIn="false" value="USE_FULL_LL_DRIVER"/>
 									<listOptionValue builtIn="false" value="HSE_VALUE=8000000"/>
@@ -133,20 +141,21 @@
 									<listOptionValue builtIn="false" value="INSTRUCTION_CACHE_ENABLE=1"/>
 									<listOptionValue builtIn="false" value="DATA_CACHE_ENABLE=1"/>
 								</option>
-								<option IS_BUILTIN_EMPTY="false" IS_VALUE_EMPTY="false" id="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.c.compiler.option.includepaths.300786558" superClass="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.c.compiler.option.includepaths" useByScannerDiscovery="false" valueType="includePath">
+								<option IS_BUILTIN_EMPTY="false" IS_VALUE_EMPTY="false" id="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.c.compiler.option.includepaths.300786558" name="Include paths (-I)" superClass="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.c.compiler.option.includepaths" useByScannerDiscovery="false" valueType="includePath">
 									<listOptionValue builtIn="false" value="../Core/Inc"/>
 									<listOptionValue builtIn="false" value="../Drivers/STM32L0xx_HAL_Driver/Inc"/>
 									<listOptionValue builtIn="false" value="../Drivers/CMSIS/Device/ST/STM32L0xx/Include"/>
 									<listOptionValue builtIn="false" value="../Drivers/CMSIS/Include"/>
+									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/${ProjName}/Libs/sht4x}&quot;"/>
 								</option>
 								<inputType id="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.c.compiler.input.c.1160143889" superClass="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.c.compiler.input.c"/>
 							</tool>
 							<tool id="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.cpp.compiler.543872720" name="MCU G++ Compiler" superClass="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.cpp.compiler">
-								<option id="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.cpp.compiler.option.debuglevel.450268074" superClass="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.cpp.compiler.option.debuglevel" useByScannerDiscovery="false" value="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.cpp.compiler.option.debuglevel.value.g0" valueType="enumerated"/>
-								<option id="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.cpp.compiler.option.optimization.level.2070767313" superClass="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.cpp.compiler.option.optimization.level" useByScannerDiscovery="false" value="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.cpp.compiler.option.optimization.level.value.os" valueType="enumerated"/>
+								<option id="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.cpp.compiler.option.debuglevel.450268074" name="Debug level" superClass="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.cpp.compiler.option.debuglevel" useByScannerDiscovery="false" value="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.cpp.compiler.option.debuglevel.value.g0" valueType="enumerated"/>
+								<option id="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.cpp.compiler.option.optimization.level.2070767313" name="Optimization level" superClass="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.cpp.compiler.option.optimization.level" useByScannerDiscovery="false" value="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.cpp.compiler.option.optimization.level.value.os" valueType="enumerated"/>
 							</tool>
 							<tool id="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.c.linker.1437191537" name="MCU GCC Linker" superClass="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.c.linker">
-								<option id="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.c.linker.option.script.581268614" superClass="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.c.linker.option.script" value="${workspace_loc:/${ProjName}/STM32L031G6UX_FLASH.ld}" valueType="string"/>
+								<option id="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.c.linker.option.script.581268614" name="Linker Script (-T)" superClass="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.c.linker.option.script" value="${workspace_loc:/${ProjName}/STM32L031G6UX_FLASH.ld}" valueType="string"/>
 								<inputType id="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.c.linker.input.1903039419" superClass="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.c.linker.input">
 									<additionalInput kind="additionalinputdependency" paths="$(USER_OBJS)"/>
 									<additionalInput kind="additionalinput" paths="$(LIBS)"/>
diff --git a/fw/Core/Inc/sht4x.h b/fw/Core/Inc/sht4x.h
deleted file mode 100644
index 36c4351..0000000
--- a/fw/Core/Inc/sht4x.h
+++ /dev/null
@@ -1,57 +0,0 @@
-/*
- * sht4x.h
- *
- *  Created on: Jun 8, 2021
- *      Author: user
- */
-
-#ifndef INC_SHT4X_H_
-#define INC_SHT4X_H_
-
-#include "stdint.h"
-#include "stm32l0xx_ll_i2c.h"
-#include "stm32l0xx_ll_utils.h"
-#include "i2c.h"
-#include "crc8.h"
-
-/*
- * Defines & macros
- */
-
-#define SHT4X_I2C_ADDRESS 0x44
-
-/*
- * Return values
- */
-
-#define SHT4X_OK 0
-#define SHT4X_ERROR -1 // generic error
-#define SHT4X_CRC8_ERROR -2 // checksum failed
-
-/*
- * Data types
- */
-
-typedef enum {
-	SHT4X_START_MEAS_HIGH_PRECISION = 0xFD,
-	SHT4X_START_MEAS_MEDIUM_PRECISION = 0xF6,
-	SHT4X_START_MEAS_LOW_PRECISION = 0xE0,
-	SHT4X_READ_SERIAL = 0x89,
-	SHT4X_SOFT_RESET = 0x94,
-	SHT4X_HEATER_200_mW_1_s = 0x39,
-	SHT4X_HEATER_200_mW_01_s = 0x32,
-	SHT4X_HEATER_110_mW_1_s = 0x2F,
-	SHT4X_HEATER_110_mW_01_s = 0x24,
-	SHT4X_HEATER_20_mW_1_s = 0x1E,
-	SHT4X_HEATER_20_mW_01_s = 0x15
-} sht4x_cmd_t;
-
-/*
- * Function prototypes
- */
-
-int8_t sht4x_send_cmd(sht4x_cmd_t cmd);
-int8_t sht4x_read_data(uint8_t *buffer, int len);
-int8_t sht4x_measure(int16_t *temperature, uint16_t *relative_humidity);
-
-#endif /* INC_SHT4X_H_ */
diff --git a/fw/Core/Src/main.c b/fw/Core/Src/main.c
index 7732ab1..768820d 100644
--- a/fw/Core/Src/main.c
+++ b/fw/Core/Src/main.c
@@ -168,6 +168,40 @@ void CO2_to_color(uint16_t co2, uint16_t co2_limit_yellow, uint16_t co2_limit_re
 /* Private user code ---------------------------------------------------------*/
 /* USER CODE BEGIN 0 */
 
+/*
+ * Functions for SHT4x lib
+ */
+
+
+int8_t sht4x_i2c_transmit(uint8_t address, uint8_t *buffer, int len)
+{
+	i2c_transmit(address, buffer, len);
+}
+
+int8_t sht4x_i2c_receive(uint8_t address, uint8_t *buffer, int len)
+{
+	i2c_receive(address, buffer, len);
+}
+
+uint8_t sensirion_crc8_calculate(const uint8_t *data, uint16_t count)
+{
+	crc8_calculate(data, count);
+}
+
+int8_t sht4x_disable_interrupts(void)
+{
+	uart_disable_interrupts();
+}
+
+int8_t sht4x_enable_interrupts(void)
+{
+	uart_enable_interrupts();
+}
+
+void delay_ms(int delay_ms)
+{
+	LL_mDelay(delay_ms);
+}
 /* USER CODE END 0 */
 
 /**
diff --git a/fw/Core/Src/sht4x.c b/fw/Core/Src/sht4x.c
deleted file mode 100644
index 2d05774..0000000
--- a/fw/Core/Src/sht4x.c
+++ /dev/null
@@ -1,67 +0,0 @@
-/*
- * sht4x.c
- *
- *  Created on: Jun 8, 2021
- *      Author: user
- */
-
-#include "sht4x.h"
-#include "main.h" /* for uart_disable_interrupts() */
-
-int8_t sht4x_send_cmd(sht4x_cmd_t cmd)
-{
-	return SHT4X_OK;
-}
-
-int8_t sht4x_read_data(uint8_t *buffer, int len)
-{
-	return SHT4X_OK;
-}
-
-int8_t sht4x_measure(int16_t *temperature, uint16_t *relative_humidity)
-{
-	uint8_t buffer[32];
-	int result;
-
-	/* start measurement */
-	buffer[0] = SHT4X_START_MEAS_HIGH_PRECISION;
-	/* disable interrupts to prevent modbus/i2c conflict */
-	uart_disable_interrupts();
-	result = i2c_transmit(SHT4X_I2C_ADDRESS<<1, buffer, 1);
-	uart_enable_interrupts();
-	if (result != I2C_OK) {
-		return SHT4X_ERROR;
-	}
-	LL_mDelay(10); /* 10 ms should be enough */
-	/* read out */
-	uart_disable_interrupts();
-	result = i2c_receive(SHT4X_I2C_ADDRESS<<1, buffer, 6);
-	uart_enable_interrupts();
-	if (result != I2C_OK) {
-		return SHT4X_ERROR;
-	}
-	/* Convert to T and RH; taken directly from pseudocode in SHT4x datasheet, page 3 */
-	uint32_t t_ticks = (buffer[0] << 8) + buffer[1];
-	uint8_t t_crc = buffer[2];
-	uint32_t rh_ticks = (buffer[3] << 8) + buffer[4];
-	uint8_t rh_crc = buffer[5];
-	/* check CRC-8 checksum */
-	uint8_t crc_correct = crc8_calculate(buffer, 2) == t_crc;
-	crc_correct &= crc8_calculate(buffer + 3, 2) == rh_crc;
-	if (!crc_correct) {
-		return SHT4X_CRC8_ERROR;
-	}
-	/* copy data to output variables */
-	int t_degC = -450 + 10 * 175 * t_ticks / 65535; /* temperature * 10 */
-	int rh_pRH = -6 + 125 * rh_ticks / 65535;
-	if (rh_pRH > 100) {
-			rh_pRH = 100;
-	}
-	if (rh_pRH < 0) {
-		rh_pRH = 0;
-	}
-	*temperature = t_degC;
-	*relative_humidity = rh_pRH;
-
-	return SHT4X_OK;
-}
diff --git a/fw/Libs/sht4x b/fw/Libs/sht4x
new file mode 160000
index 0000000..233d4da
--- /dev/null
+++ b/fw/Libs/sht4x
@@ -0,0 +1 @@
+Subproject commit 233d4da9b405062cdaf49ca2927325e90d5bde9e
diff --git a/fw/iaq_wired_sensor Debug.launch b/fw/iaq_wired_sensor Debug.launch
index 191079c..abffb15 100644
--- a/fw/iaq_wired_sensor Debug.launch	
+++ b/fw/iaq_wired_sensor Debug.launch	
@@ -38,7 +38,7 @@
     <stringAttribute key="com.st.stm32cube.ide.mcu.debug.stlink.stlink_txt_serial_number" value=""/>
     <stringAttribute key="com.st.stm32cube.ide.mcu.debug.stlink.watchdog_config" value="none"/>
     <booleanAttribute key="com.st.stm32cube.ide.mcu.debug.stlinkenable_rtos" value="false"/>
-    <stringAttribute key="com.st.stm32cube.ide.mcu.debug.stlinkrestart_configurations" value="{&quot;fItems&quot;:[{&quot;fDisplayName&quot;:&quot;Reset&quot;,&quot;fIsSuppressible&quot;:false,&quot;fResetAttribute&quot;:&quot;Software system reset&quot;,&quot;fResetStrategies&quot;:[{&quot;fDisplayName&quot;:&quot;Software system reset&quot;,&quot;fLaunchAttribute&quot;:&quot;system_reset&quot;,&quot;fGdbCommands&quot;:[&quot;monitor reset\n&quot;],&quot;fCmdOptions&quot;:[&quot;-g&quot;]},{&quot;fDisplayName&quot;:&quot;Hardware reset&quot;,&quot;fLaunchAttribute&quot;:&quot;hardware_reset&quot;,&quot;fGdbCommands&quot;:[&quot;monitor reset hardware\n&quot;],&quot;fCmdOptions&quot;:[&quot;-g&quot;]},{&quot;fDisplayName&quot;:&quot;Core reset&quot;,&quot;fLaunchAttribute&quot;:&quot;core_reset&quot;,&quot;fGdbCommands&quot;:[&quot;monitor reset core\n&quot;],&quot;fCmdOptions&quot;:[&quot;-g&quot;]},{&quot;fDisplayName&quot;:&quot;None&quot;,&quot;fLaunchAttribute&quot;:&quot;no_reset&quot;,&quot;fGdbCommands&quot;:[],&quot;fCmdOptions&quot;:[&quot;-g&quot;]}],&quot;fGdbCommandGroup&quot;:{&quot;name&quot;:&quot;Additional commands&quot;,&quot;commands&quot;:[]}}]}"/>
+    <stringAttribute key="com.st.stm32cube.ide.mcu.debug.stlinkrestart_configurations" value="{&quot;fVersion&quot;:1,&quot;fItems&quot;:[{&quot;fDisplayName&quot;:&quot;Reset&quot;,&quot;fIsSuppressible&quot;:false,&quot;fResetAttribute&quot;:&quot;Software system reset&quot;,&quot;fResetStrategies&quot;:[{&quot;fDisplayName&quot;:&quot;Software system reset&quot;,&quot;fLaunchAttribute&quot;:&quot;system_reset&quot;,&quot;fGdbCommands&quot;:[&quot;monitor reset\n&quot;],&quot;fCmdOptions&quot;:[&quot;-g&quot;]},{&quot;fDisplayName&quot;:&quot;Hardware reset&quot;,&quot;fLaunchAttribute&quot;:&quot;hardware_reset&quot;,&quot;fGdbCommands&quot;:[&quot;monitor reset hardware\n&quot;],&quot;fCmdOptions&quot;:[&quot;-g&quot;]},{&quot;fDisplayName&quot;:&quot;Core reset&quot;,&quot;fLaunchAttribute&quot;:&quot;core_reset&quot;,&quot;fGdbCommands&quot;:[&quot;monitor reset core\n&quot;],&quot;fCmdOptions&quot;:[&quot;-g&quot;]},{&quot;fDisplayName&quot;:&quot;None&quot;,&quot;fLaunchAttribute&quot;:&quot;no_reset&quot;,&quot;fGdbCommands&quot;:[],&quot;fCmdOptions&quot;:[&quot;-g&quot;]}],&quot;fGdbCommandGroup&quot;:{&quot;name&quot;:&quot;Additional commands&quot;,&quot;commands&quot;:[]},&quot;fStartApplication&quot;:true}]}"/>
     <booleanAttribute key="com.st.stm32cube.ide.mcu.rtosproxy.enableRtosProxy" value="false"/>
     <stringAttribute key="com.st.stm32cube.ide.mcu.rtosproxy.rtosProxyCustomProperties" value=""/>
     <stringAttribute key="com.st.stm32cube.ide.mcu.rtosproxy.rtosProxyDriver" value="threadx"/>