rr_i2c.h

针对德州仪器DM270开发板的bootloader,其实现了内核的下载以及文件系统的下载

#ifndef __I2C_H__
#define __I2C__H__

#define PMU_SCL_GIO   31    //GIO24
#define PMU_SDA_GIO   32    //GIO23

#define PMU_ADDR	10


void GIODirSet(unsigned char port, unsigned char dir);                                                 
void GIOSet(unsigned char port,unsigned char set);
unsigned char GIOGet(unsigned char port);

void set_PMU_SCL_High(void);
void set_PMU_SCL_Low(void);

void set_PMU_SDA_High(void);
void set_PMU_SDA_Low(void);

void set_PMU_GPIO_High(void);

void make_PMU_SDA_Input(void);
void make_PMU_SDA_Output(void);
void i2c_Init(void);
void i2c_Open(void);
unsigned char get_SDA(void);
void send_Ack(void);
void sendNack(void);
void i2c_wait(void);
void i2c_Stop(void);
void i2c_Init(void);
int i2c_Send_Byte(unsigned char buff);
unsigned char i2c_Read_Byte(void);

void i2c_writeReg(unsigned char devaddr, unsigned char subaddr,
					unsigned char value, unsigned char *successflag);
unsigned char i2c_readReg(unsigned char devaddr, unsigned char subaddr,
						unsigned char *successflag);
#endif  //__I2C_H__