#ifndef _I2C_H_
#define _I2C_H_

#include <stdint.h>

#define I2C_BASE 0x3040000U

#define I2C_PRESCALER_LO 0x00  // low byte clock prescaler register
#define I2C_PRESCALER_HI 0x04  // high byte clock prescaler register
#define I2C_CONTROL      0x08  // control register
#define I2C_DATA         0x0c  // write: transmit byte, read: receive byte
#define I2C_CMD_STATUS   0x10  // write: command, read: status