объявляются два экземпляра wire по номеру железного I2C, по дефолту используется тот, что задан для каждой платы

variants/elbear_ace_nano/pins_arduino.h

@@ -131,9 +131,10 @@ void spi_onBegin(uint8_t spiNum);
 void spi_onEnd(uint8_t spiNum);
 
 // I2C
+#define I2C_COMMON_QTY  1
+#define DEFAULT_WIRE    Wire1 // use I2C1 by default
 #define PIN_WIRE_SDA    18
 #define PIN_WIRE_SCL    19
-#define I2C_COMMON_QTY  1
 static const uint8_t    SDA = PIN_WIRE_SDA;
 static const uint8_t    SCL = PIN_WIRE_SCL;
 // available frequencies

variants/elbear_ace_uno/pins_arduino.h

@@ -125,9 +125,10 @@ void spi_onBegin(uint8_t spiNum);
 void spi_onEnd(uint8_t spiNum);
 
 // I2C
+#define I2C_COMMON_QTY  (1)
+#define DEFAULT_WIRE    Wire1 // use I2C1 by default
 #define PIN_WIRE_SDA    (18)
 #define PIN_WIRE_SCL    (19)
-#define I2C_COMMON_QTY  (1)
 static const uint8_t SDA = PIN_WIRE_SDA;
 static const uint8_t SCL = PIN_WIRE_SCL;
 // available frequencies

variants/elsomik/pins_arduino.h

@@ -155,12 +155,13 @@ static inline void spi_onEnd(uint8_t spiNum){}
 
 // I2C
 #define I2C_COMMON_QTY    2
-// Wire (I2C1)
+#define DEFAULT_WIRE      Wire0 // use I2C0 by default
+// Wire1 (I2C1)
 #define PIN_WIRE_SDA      P1_12
 #define PIN_WIRE_SCL      P1_13
 static const uint8_t      SDA = PIN_WIRE_SDA;
 static const uint8_t      SCL = PIN_WIRE_SCL;
-// Wire1 (I2C0)
+// Wire0 (I2C0)
 #define PIN_WIRE_SDA1     P0_9
 #define PIN_WIRE_SCL1     P0_10
 static const uint8_t      SDA1 = PIN_WIRE_SDA1;

variants/start/pins_arduino.h

@@ -168,12 +168,13 @@ static inline void spi_onEnd(uint8_t spiNum){}
 
 // I2C
 #define I2C_COMMON_QTY    2
-// Wire (I2C1)
+#define DEFAULT_WIRE      Wire0 // use I2C0 by default
+// Wire1 (I2C1)
 #define PIN_WIRE_SDA      P1_12
 #define PIN_WIRE_SCL      P1_13
 static const uint8_t      SDA = PIN_WIRE_SDA;
 static const uint8_t      SCL = PIN_WIRE_SCL;
-// Wire1 (I2C0)
+// Wire0 (I2C0)
 #define PIN_WIRE_SDA1     P0_9
 #define PIN_WIRE_SCL1     P0_10
 static const uint8_t      SDA1 = PIN_WIRE_SDA1;