diff --git a/AT42QT1244.c b/AT42QT1244.c
index 89b2fb405..7c8d43064 100755
--- a/AT42QT1244.c
+++ b/AT42QT1244.c
@@ -1,6 +1,6 @@
 /*!\file AT42QT1244.c
 ** \author SMFSW
-** \version v0.2
+** \version v0.3
 ** \date 2017
 ** \copyright MIT (c) 2017, SMFSW
 ** \brief AT42QT1244 Driver code
@@ -24,17 +24,17 @@ I2C_slave AT42QT1244_hal = { { pNull, I2C_ADDR(AT42QT1244_BASE_ADDR), I2C_slave_
 
 
 /*!\brief 16bits CRC calculation for AT42QT1244
-** \param[in] crc - current crc value
-** \param[in] data - new data for crc
-** \return New CRC value
 ** \details 16bits crc calculation. Initial crc entry must be 0.
 ** The message is not augmented with 'zero' bits. polynomial = X16 + X15 + X2 + 1
 ** Repeat this function for each data block byte, folding the result back into the call parameter crc
+** \param[in] crc - current crc value
+** \param[in] data - new data for crc
+** \return New CRC value
 **/
 static uint16_t crc16(uint16_t crc, uint8_t data)
 {
-	crc ^= (uint16_t) (data) * 0x100;
-	for (int i = 7 ; i > 0 ; i--)
+	crc ^= (uint16_t) data * 0x100;
+	for (int i = 7 ; i >= 0 ; i--)
 	{
 		if (crc & 0x8000)	{ crc = (crc << 1) ^ 0x1021; }
 		else				{ crc <<= 1; }
@@ -112,7 +112,7 @@ FctERR AT42QT1244_Read(uint8_t * data, uint16_t addr, uint16_t nb)
 
 
 /****************************************************************/
-#else
+#elif !defined(NO_WARN_I2C_DRIVERS)
 #warning "You have to define I2C_AT42QT1244 in globals.h with an I2C instance for this to work!"
 #endif
 #endif
diff --git a/BMP180.c b/BMP180.c
index 7df780641..378ae0fa7 100755
--- a/BMP180.c
+++ b/BMP180.c
@@ -1,6 +1,6 @@
 /*!\file BMP180.c
 ** \author SMFSW
-** \version v0.2
+** \version v0.3
 ** \date 2017
 ** \copyright MIT (c) 2017, SMFSW
 ** \brief BMP180 Driver code
@@ -81,7 +81,7 @@ FctERR BMP180_Read_Word(uint16_t * data, uint16_t addr)
 
 
 /****************************************************************/
-#else
+#elif !defined(NO_WARN_I2C_DRIVERS)
 #warning "You have to define I2C_BMP180 in globals.h with an I2C instance for this to work!"
 #endif
 #endif
diff --git a/DRV2605L.c b/DRV2605L.c
index a8eacc0b3..08cc42647 100755
--- a/DRV2605L.c
+++ b/DRV2605L.c
@@ -1,6 +1,6 @@
 /*!\file DRV2605L.c
 ** \author SMFSW
-** \version v0.2
+** \version v0.3
 ** \date 2017
 ** \copyright MIT (c) 2017, SMFSW
 ** \brief DRV2605L Driver code
@@ -62,7 +62,7 @@ FctERR DRV2605L_Read(uint8_t * data, uint16_t addr, uint16_t nb)
 
 
 /****************************************************************/
-#else
+#elif !defined(NO_WARN_I2C_DRIVERS)
 #warning "You have to define I2C_DRV2605L in globals.h with an I2C instance for this to work!"
 #endif
 #endif
diff --git a/DS_GPMS.c b/DS_GPMS.c
index 58ce9b8f9..cb04574af 100755
--- a/DS_GPMS.c
+++ b/DS_GPMS.c
@@ -1,6 +1,6 @@
 /*!\file DS_GPMS.c
 ** \author SMFSW
-** \version v0.2
+** \version v0.3
 ** \date 2017
 ** \copyright MIT (c) 2017, SMFSW
 ** \brief DS-GPM.S Driver code
@@ -62,7 +62,7 @@ FctERR GPMS_Read(uint8_t * data, uint16_t addr, uint16_t nb)
 
 
 /****************************************************************/
-#else
+#elif !defined(NO_WARN_I2C_DRIVERS)
 #warning "You have to define I2C_GPMS in globals.h with an I2C instance for this to work!"
 #endif
 #endif
diff --git a/FM24C.c b/FM24C.c
index 2591588f5..b71b2865b 100755
--- a/FM24C.c
+++ b/FM24C.c
@@ -1,6 +1,6 @@
 /*!\file FM24C.c
 ** \author SMFSW
-** \version v0.2
+** \version v0.3
 ** \date 2017
 ** \copyright MIT (c) 2017, SMFSW
 ** \brief FM24C Driver code
@@ -14,7 +14,7 @@
 #if defined(HAL_I2C_MODULE_ENABLED)
 #if defined(I2C_FM24C)
 /****************************************************************/
-#if defined(I2C_MB85RC256V)
+#if defined(I2C_MB85RC256V) && !defined(NO_WARN_I2C_DRIVERS)
 #warning "FM24CxxB -> Defined along with MB85RC256V: use with caution, might have same I2C addresses if on same I2C bus!!!"
 #endif
 /****************************************************************/
@@ -106,7 +106,7 @@ FctERR FM24C_ReadWrite(uint8_t * data, uint16_t addr, uint16_t nb, bool wr)
 
 
 /****************************************************************/
-#else
+#elif !defined(NO_WARN_I2C_DRIVERS)
 #warning "You have to define I2C_FM24C in globals.h with an I2C instance for this to work!"
 #endif
 #endif
diff --git a/MB85RC256V.c b/MB85RC256V.c
index 1f8b61291..1a00f87c6 100755
--- a/MB85RC256V.c
+++ b/MB85RC256V.c
@@ -1,6 +1,6 @@
 /*!\file MB85RC256V.c
 ** \author SMFSW
-** \version v0.2
+** \version v0.3
 ** \date 2017
 ** \copyright MIT (c) 2017, SMFSW
 ** \brief MB85RC256V Driver code
@@ -13,7 +13,7 @@
 #if defined(HAL_I2C_MODULE_ENABLED)
 #if defined(I2C_MB85RC256V)
 /****************************************************************/
-#if defined(I2C_FM24C)
+#if defined(I2C_FM24C) && !defined(NO_WARN_I2C_DRIVERS)
 #warning "MB85RC256V -> Defined along with FM24CxxB: use with caution, might have same I2C addresses if on same I2C bus!!!"
 #endif
 /****************************************************************/
@@ -78,7 +78,7 @@ FctERR MB85RC256V_Read_ID(uint8_t * data)
 }
 
 /****************************************************************/
-#else
+#elif !defined(NO_WARN_I2C_DRIVERS)
 #warning "You have to define I2C_MB85RC256V in globals.h with an I2C instance for this to work!"
 #endif
 #endif
diff --git a/MCP4725.c b/MCP4725.c
index dd9339cdc..736706ffa 100755
--- a/MCP4725.c
+++ b/MCP4725.c
@@ -1,6 +1,6 @@
 /*!\file MCP4725.c
 ** \author SMFSW
-** \version v0.2
+** \version v0.3
 ** \date 2017
 ** \copyright MIT (c) 2017, SMFSW
 ** \brief MCP4725 Driver code
@@ -73,7 +73,7 @@ FctERR MCP4725_General_Call(uint8_t cmd)
 
 
 /****************************************************************/
-#else
+#elif !defined(NO_WARN_I2C_DRIVERS)
 #warning "You have to define I2C_MCP4725 in globals.h with an I2C instance for this to work!"
 #endif
 #endif
diff --git a/MCP9808.c b/MCP9808.c
index 58cb6d0a2..0b7a1d797 100755
--- a/MCP9808.c
+++ b/MCP9808.c
@@ -1,6 +1,6 @@
 /*!\file MCP9808.c
 ** \author SMFSW
-** \version v0.2
+** \version v0.3
 ** \date 2017
 ** \copyright MIT (c) 2017, SMFSW
 ** \brief MCP9808 Driver code
@@ -97,7 +97,7 @@ FctERR MCP9808_Read(uint16_t * data, uint16_t addr, uint16_t nb)
 
 
 /****************************************************************/
-#else
+#elif !defined(NO_WARN_I2C_DRIVERS)
 #warning "You have to define I2C_MCP9808 in globals.h with an I2C instance for this to work!"
 #endif
 #endif
diff --git a/MCP9808_proc.h b/MCP9808_proc.h
index ae2b6e4bf..d38835607 100755
--- a/MCP9808_proc.h
+++ b/MCP9808_proc.h
@@ -35,8 +35,8 @@
 // *****************************************************************************
 typedef struct MCP9808_proc {
 	float		Temperature;
-	bool		TLower;
 	bool		TUpper;
+	bool		TLower;
 	bool		TCrit;
 	bool		NewData;
 	uint32_t	hLast;
diff --git a/MTCH6102.c b/MTCH6102.c
index 5e4de6609..387b0330b 100755
--- a/MTCH6102.c
+++ b/MTCH6102.c
@@ -1,6 +1,6 @@
 /*!\file MTCH6102.c
 ** \author SMFSW
-** \version v0.2
+** \version v0.3
 ** \date 2017
 ** \copyright MIT (c) 2017, SMFSW
 ** \brief MTCH6102 Driver code
@@ -65,7 +65,7 @@ FctERR MTCH6102_Read(uint8_t * data, uint16_t addr, uint16_t nb)
 
 
 /****************************************************************/
-#else
+#elif !defined(NO_WARN_I2C_DRIVERS)
 #warning "You have to define I2C_MTCH6102 in globals.h with an I2C instance for this to work!"
 #endif
 #endif
diff --git a/PCA9624.c b/PCA9624.c
index ab1bf7597..fb23c271a 100755
--- a/PCA9624.c
+++ b/PCA9624.c
@@ -1,6 +1,6 @@
 /*!\file PCA9624.c
 ** \author SMFSW
-** \version v0.2
+** \version v0.3
 ** \date 2017
 ** \copyright MIT (c) 2017, SMFSW
 ** \brief PCA9624 Driver code
@@ -13,7 +13,7 @@
 #if defined(HAL_I2C_MODULE_ENABLED)
 #if defined(I2C_PCA9624)
 /****************************************************************/
-#if defined(I2C_PCA9685)
+#if defined(I2C_PCA9685) && !defined(NO_WARN_I2C_DRIVERS)
 #warning "PCA9624 -> Multiple PCA96xx types: use with caution if using CALL addresses if on same I2C bus!!!"
 #endif
 /****************************************************************/
@@ -66,7 +66,7 @@ FctERR PCA9624_Read(uint8_t * data, uint16_t addr, uint16_t nb)
 
 
 /****************************************************************/
-#else
+#elif !defined(NO_WARN_I2C_DRIVERS)
 #warning "You have to define I2C_PCA9624 in globals.h with an I2C instance for this to work!"
 #endif
 #endif
diff --git a/PCA9685.c b/PCA9685.c
index a186c6a6c..dee0aa84b 100755
--- a/PCA9685.c
+++ b/PCA9685.c
@@ -1,6 +1,6 @@
 /*!\file PCA9685.c
 ** \author SMFSW
-** \version v0.2
+** \version v0.3
 ** \date 2017
 ** \copyright MIT (c) 2017, SMFSW
 ** \brief PCA9685 Driver code
@@ -13,7 +13,7 @@
 #if defined(HAL_I2C_MODULE_ENABLED)
 #if defined(I2C_PCA9685)
 /****************************************************************/
-#if defined(I2C_PCA9624)
+#if defined(I2C_PCA9624) && !defined(NO_WARN_I2C_DRIVERS)
 #warning "PCA9685 -> Multiple PCA96xx types: use with caution if using CALL addresses if on same I2C bus!!!"
 #endif
 /****************************************************************/
@@ -65,7 +65,7 @@ FctERR PCA9685_Read(uint8_t * data, uint16_t addr, uint16_t nb)
 
 
 /****************************************************************/
-#else
+#elif !defined(NO_WARN_I2C_DRIVERS)
 #warning "You have to define I2C_PCA9685 in globals.h with an I2C instance for this to work!"
 #endif
 #endif
diff --git a/PCF8523.c b/PCF8523.c
index 294f264e3..26287e9b7 100755
--- a/PCF8523.c
+++ b/PCF8523.c
@@ -1,6 +1,6 @@
 /*!\file PCF8523.c
 ** \author SMFSW
-** \version v0.2
+** \version v0.3
 ** \date 2017
 ** \copyright MIT (c) 2017, SMFSW
 ** \brief PCF8523 Driver code
@@ -62,7 +62,7 @@ FctERR PCF8523_Read(uint8_t * data, uint16_t addr, uint16_t nb)
 
 
 /****************************************************************/
-#else
+#elif !defined(NO_WARN_I2C_DRIVERS)
 #warning "You have to define I2C_PCF8523 in globals.h with an I2C instance for this to work!"
 #endif
 #endif
diff --git a/README.md b/README.md
index 84a2528a7..361967280 100755
--- a/README.md
+++ b/README.md
@@ -18,6 +18,8 @@ ARM I2C Drivers for various components
 - use $CPNT$_Init() once
 - start using $CPNT$_funcs()
 
+- if you find warning messages annoying, you could define NO_WARN_I2C_DRIVERS (underscores between words) in compiler options to hide warning messages
+
 
 ## Remarks
 
diff --git a/template/CPNT.c.txt b/template/CPNT.c.txt
index fb05b099e..b34fd96b1 100755
--- a/template/CPNT.c.txt
+++ b/template/CPNT.c.txt
@@ -1,6 +1,6 @@
 /*!\file $CPNT$.c
 ** \author SMFSW
-** \version v0.2
+** \version v0.3
 ** \date 2017
 ** \copyright MIT (c) 2017, SMFSW
 ** \brief $CPNT$ Driver code
@@ -71,7 +71,7 @@ FctERR $CPNT$_Read(uint8_t * data, uint16_t addr, uint16_t nb)
 
 
 /****************************************************************/
-#else
+#elif !defined(NO_WARN_I2C_DRIVERS)
 #warning "You have to define I2C_$CPNT$ in globals.h with an I2C instance for this to work!"
 #endif
 #endif
diff --git a/template/CPNT.h.txt b/template/CPNT.h.txt
index 17531dcbc..ec5babc12 100755
--- a/template/CPNT.h.txt
+++ b/template/CPNT.h.txt
@@ -1,6 +1,6 @@
 /*!\file $CPNT$.h
 ** \author SMFSW
-** \version v0.2
+** \version v0.3
 ** \date 2017
 ** \copyright MIT (c) 2017, SMFSW
 ** \brief $CPNT$ Driver declarations
diff --git a/template/CPNT_ex.c.txt b/template/CPNT_ex.c.txt
index ec6ec36ee..09e9e16a0 100755
--- a/template/CPNT_ex.c.txt
+++ b/template/CPNT_ex.c.txt
@@ -1,6 +1,6 @@
 /*!\file $CPNT$_ex.c
 ** \author SMFSW
-** \version v0.2
+** \version v0.3
 ** \date 2017
 ** \copyright MIT (c) 2017, SMFSW
 ** \brief $CPNT$ Driver extensions code
diff --git a/template/CPNT_ex.h.txt b/template/CPNT_ex.h.txt
index 91908fbf1..8db21c4bf 100755
--- a/template/CPNT_ex.h.txt
+++ b/template/CPNT_ex.h.txt
@@ -1,6 +1,6 @@
 /*!\file $CPNT$_ex.h
 ** \author SMFSW
-** \version v0.2
+** \version v0.3
 ** \date 2017
 ** \copyright MIT (c) 2017, SMFSW
 ** \brief $CPNT$ Driver extensions declarations
diff --git a/template/CPNT_proc.c.txt b/template/CPNT_proc.c.txt
index 09ff3d3d0..15c9a4c9c 100755
--- a/template/CPNT_proc.c.txt
+++ b/template/CPNT_proc.c.txt
@@ -1,6 +1,6 @@
 /*!\file $CPNT$_proc.c
 ** \author SMFSW
-** \version v0.2
+** \version v0.3
 ** \date 2017
 ** \copyright MIT (c) 2017, SMFSW
 ** \brief $CPNT$ Driver procedures code
diff --git a/template/CPNT_proc.h.txt b/template/CPNT_proc.h.txt
index 5151cef5d..37be9c965 100755
--- a/template/CPNT_proc.h.txt
+++ b/template/CPNT_proc.h.txt
@@ -1,6 +1,6 @@
 /*!\file $CPNT$_proc.h
 ** \author SMFSW
-** \version v0.2
+** \version v0.3
 ** \date 2017
 ** \copyright MIT (c) 2017, SMFSW
 ** \brief $CPNT$ Driver procedures declarations