#ifndef _I2C_H_ #define _I2C_H_ #define I2C_SDA_PIN GPIO_NUM_4 #define I2C_SCL_PIN GPIO_NUM_15 #define I2C_NUM I2C_NUM_0 //#define I2C_NUM I2C_NUM #define I2C_MASTER_FREQ_HZ 400000U /*!< I2C clock of SSD1306 can run at 400 kHz max. */ class I2C_Driver { }; void i2c_init(); #endif /* _I2C_H_ */