diff --git a/examples/X_NUCLEO_GNSS1A1_HelloWorld_UART/X_NUCLEO_GNSS1A1_HelloWorld_UART.ino b/examples/X_NUCLEO_GNSS1A1_HelloWorld_UART/X_NUCLEO_GNSS1A1_HelloWorld_UART.ino
index 2756ee3..27c2e11 100644
--- a/examples/X_NUCLEO_GNSS1A1_HelloWorld_UART/X_NUCLEO_GNSS1A1_HelloWorld_UART.ino
+++ b/examples/X_NUCLEO_GNSS1A1_HelloWorld_UART/X_NUCLEO_GNSS1A1_HelloWorld_UART.ino
@@ -57,7 +57,7 @@ uint32_t stime = 0;
 int waitType = 0;
 
 #ifdef ARDUINO_ARCH_STM32
-HardwareSerial Serial1(PA10, PA9);
+Uart Serial1(PA10, PA9);
 #endif
 
 #define MSG_SZ 256
diff --git a/examples/X_NUCLEO_GNSS1A1_MicroNMEA_I2C/X_NUCLEO_GNSS1A1_MicroNMEA_I2C.ino b/examples/X_NUCLEO_GNSS1A1_MicroNMEA_I2C/X_NUCLEO_GNSS1A1_MicroNMEA_I2C.ino
index 8564317..4182402 100644
--- a/examples/X_NUCLEO_GNSS1A1_MicroNMEA_I2C/X_NUCLEO_GNSS1A1_MicroNMEA_I2C.ino
+++ b/examples/X_NUCLEO_GNSS1A1_MicroNMEA_I2C/X_NUCLEO_GNSS1A1_MicroNMEA_I2C.ino
@@ -61,7 +61,11 @@
 #endif
 
 // Refer to Stream devices by use
+#if defined(STM32_CORE_VERSION) && (STM32_CORE_VERSION > 0x020C0000)
+Uart& console = Serial;
+#else
 HardwareSerial& console = Serial;
+#endif
 TwoWire& gps = DEV_I2C;
 
 //I2C read data structures
diff --git a/examples/X_NUCLEO_GNSS1A1_MicroNMEA_UART/X_NUCLEO_GNSS1A1_MicroNMEA_UART.ino b/examples/X_NUCLEO_GNSS1A1_MicroNMEA_UART/X_NUCLEO_GNSS1A1_MicroNMEA_UART.ino
index a29c436..1dcb751 100644
--- a/examples/X_NUCLEO_GNSS1A1_MicroNMEA_UART/X_NUCLEO_GNSS1A1_MicroNMEA_UART.ino
+++ b/examples/X_NUCLEO_GNSS1A1_MicroNMEA_UART/X_NUCLEO_GNSS1A1_MicroNMEA_UART.ino
@@ -42,15 +42,22 @@
 #include <MicroNMEA.h>
 
 //Define Serial1 for STM32 Nucleo boards
-#ifdef ARDUINO_ARCH_STM32
+#if defined(STM32_CORE_VERSION) && (STM32_CORE_VERSION > 0x020C0000)
+Uart Serial1(PA10, PA9);
+#elif defined(ARDUINO_ARCH_STM32)
 HardwareSerial Serial1(PA10, PA9);
 #endif
 
 #define RESET_PIN 7
 
 // Refer to serial devices by use
+#if defined(STM32_CORE_VERSION) && (STM32_CORE_VERSION > 0x020C0000)
+Uart& console = Serial;
+Uart& gps = Serial1;
+#else
 HardwareSerial& console = Serial;
 HardwareSerial& gps = Serial1;
+#endif
 
 //MicroNMEA library structures
 char nmeaBuffer[100];
diff --git a/examples/X_NUCLEO_GNSS1A1_VirtualCOMPort/X_NUCLEO_GNSS1A1_VirtualCOMPort.ino b/examples/X_NUCLEO_GNSS1A1_VirtualCOMPort/X_NUCLEO_GNSS1A1_VirtualCOMPort.ino
index ba996f0..f681fc4 100644
--- a/examples/X_NUCLEO_GNSS1A1_VirtualCOMPort/X_NUCLEO_GNSS1A1_VirtualCOMPort.ino
+++ b/examples/X_NUCLEO_GNSS1A1_VirtualCOMPort/X_NUCLEO_GNSS1A1_VirtualCOMPort.ino
@@ -47,7 +47,9 @@ volatile uint8_t fromGNSS[16];
 volatile unsigned long idxPC = 0;
 volatile unsigned long idxGNSS = 0;
 
-#ifdef ARDUINO_ARCH_STM32
+#if defined(STM32_CORE_VERSION) && (STM32_CORE_VERSION > 0x020C0000)
+Uart Serial1(PA10, PA9);
+#elif defined(ARDUINO_ARCH_STM32)
 HardwareSerial Serial1(PA10, PA9);
 #endif
 
diff --git a/src/NMEA_parser.h b/src/NMEA_parser.h
index e716917..a246a82 100644
--- a/src/NMEA_parser.h
+++ b/src/NMEA_parser.h
@@ -272,7 +272,7 @@ typedef struct
 typedef struct
 {
    UTC_Info_t utc;         /**< UTC Time */
-   uint8_t status;            /**< “A” = valid, “V” = Warning */
+   uint8_t status;            /**< A = valid, V = Warning */
    Coords_t xyz;           /**< Coords data member */
    float32_t speed;            /**< Speed over ground in knots */
    float32_t trackgood;        /**< Course made good */
diff --git a/src/teseo.h b/src/teseo.h
index 6c38741..d6f18f4 100644
--- a/src/teseo.h
+++ b/src/teseo.h
@@ -54,6 +54,11 @@ extern "C" {
 /* Includes ------------------------------------------------------------------*/
 #include <stdint.h>
 
+/* Core compatibility --------------------------------------------------------*/
+#if defined(STM32_CORE_VERSION) && (STM32_CORE_VERSION <= 0x020C0000)
+#define Uart HardwareSerial
+#define pin_size_t uint32_t
+#endif
 
 /* Exported defines ----------------------------------------------------------*/
 /**
diff --git a/src/teseo_liv3f_class.h b/src/teseo_liv3f_class.h
index b302c5b..6dd9f06 100644
--- a/src/teseo_liv3f_class.h
+++ b/src/teseo_liv3f_class.h
@@ -93,7 +93,7 @@ class TeseoLIV3F
 
 public:
 
-   TeseoLIV3F(TwoWire *i2c, int resetPin, int enablePin) : dev_i2c(i2c), pinRes(resetPin), pinEn(enablePin)
+   TeseoLIV3F(TwoWire *i2c, pin_size_t resetPin, pin_size_t enablePin) : dev_i2c(i2c), pinRes(resetPin), pinEn(enablePin)
    {
       pinMode(pinRes, OUTPUT);
       pinMode(pinEn, OUTPUT);
@@ -104,7 +104,7 @@ class TeseoLIV3F
       commandDone = 1;
    }
 
-   TeseoLIV3F(HardwareSerial *uart, int resetPin, int enablePin) : dev_uart(uart), pinRes(resetPin), pinEn(enablePin)
+   TeseoLIV3F(Uart *uart, pin_size_t resetPin, pin_size_t enablePin) : dev_uart(uart), pinRes(resetPin), pinEn(enablePin)
    {
       pinMode(pinRes, OUTPUT);
       pinMode(pinEn, OUTPUT);
@@ -578,9 +578,9 @@ class TeseoLIV3F
 
    int useI2C = DEFAULT_BUS;
    TwoWire *dev_i2c = DEFAULT_I2C;
-   HardwareSerial *dev_uart = DEFAULT_UART;
-   int pinRes;
-   int pinEn;
+   Uart *dev_uart = DEFAULT_UART;
+   pin_size_t pinRes;
+   pin_size_t pinEn;
    int commandDone;
    char compareMessage[MAX_RESPONSE_LENGTH];
    I2CHandler i2ch;