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DM6437的i2c读写

请问哪里有关于evmdm6437_i2c.h里面函数的说明?(例如Int 16 EVMDM6437_I2C_READ(Uint16 i2c_addr, Uint8* data,Uint16 len);)

因为我不知道参数和返回值的含义,所以无法使用!请大神们指教!