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#define ARDUINO_UNO_I2C_SDA ARDUINO_UNO_D14
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#define ARDUINO_UNO_I2C_SCL ARDUINO_UNO_D15
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+ // Legacy I2C aliases
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+ #ifndef I2C_SDA
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+ #define I2C_SDA ARDUINO_UNO_I2C_SDA
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+ #endif
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+ #ifndef I2C_SCL
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+ #define I2C_SCL ARDUINO_UNO_I2C_SCL
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+ #endif
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+
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// Arduino Uno SPI signals aliases
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#define ARDUINO_UNO_SPI_CS ARDUINO_UNO_D10
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#define ARDUINO_UNO_SPI_MOSI ARDUINO_UNO_D11
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#define ARDUINO_UNO_SPI_MISO ARDUINO_UNO_D12
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#define ARDUINO_UNO_SPI_SCK ARDUINO_UNO_D13
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+ // Legacy SPI aliases
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+ #ifndef SPI_CS
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+ #define SPI_CS ARDUINO_UNO_SPI_CS
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+ #endif
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+ #ifndef SPI_MOSI
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+ #define SPI_MOSI ARDUINO_UNO_SPI_MOSI
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+ #endif
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+ #ifndef SPI_MISO
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+ #define SPI_MISO ARDUINO_UNO_SPI_MISO
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+ #endif
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+ #ifndef SPI_SCK
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+ #define SPI_SCK ARDUINO_UNO_SPI_SCK
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+ #endif
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+
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+
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// Arduino Uno UART signals aliases
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#define ARDUINO_UNO_UART_TX ARDUINO_UNO_D1
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#define ARDUINO_UNO_UART_RX ARDUINO_UNO_D0
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