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lines changed Original file line number Diff line number Diff line change 8686#define ARDUINO_UNO_I2C_SDA ARDUINO_UNO_D14
8787#define ARDUINO_UNO_I2C_SCL ARDUINO_UNO_D15
8888
89+ // Legacy I2C aliases
90+ #ifndef I2C_SDA
91+ #define I2C_SDA ARDUINO_UNO_I2C_SDA
92+ #endif
93+ #ifndef I2C_SCL
94+ #define I2C_SCL ARDUINO_UNO_I2C_SCL
95+ #endif
96+
8997// Arduino Uno SPI signals aliases
9098#define ARDUINO_UNO_SPI_CS ARDUINO_UNO_D10
9199#define ARDUINO_UNO_SPI_MOSI ARDUINO_UNO_D11
92100#define ARDUINO_UNO_SPI_MISO ARDUINO_UNO_D12
93101#define ARDUINO_UNO_SPI_SCK ARDUINO_UNO_D13
94102
103+ // Legacy SPI aliases
104+ #ifndef SPI_CS
105+ #define SPI_CS ARDUINO_UNO_SPI_CS
106+ #endif
107+ #ifndef SPI_MOSI
108+ #define SPI_MOSI ARDUINO_UNO_SPI_MOSI
109+ #endif
110+ #ifndef SPI_MISO
111+ #define SPI_MISO ARDUINO_UNO_SPI_MISO
112+ #endif
113+ #ifndef SPI_SCK
114+ #define SPI_SCK ARDUINO_UNO_SPI_SCK
115+ #endif
116+
117+
95118// Arduino Uno UART signals aliases
96119#define ARDUINO_UNO_UART_TX ARDUINO_UNO_D1
97120#define ARDUINO_UNO_UART_RX ARDUINO_UNO_D0
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