0904_BOOT/BSP/iic2.h

#ifndef __IIC2_H__
#define __IIC2_H__
#include "gd32f10x.h"

//IIC1
//#define IIC2_WP_PORT     GPIOE
//#define IIC2_WP_PIN			GPIO_PIN_14

#define IIC2_SDA_PORT    GPIOB
#define IIC2_SDA_PIN			GPIO_PIN_11

#define IIC2_SCL_PORT		GPIOB
#define IIC2_SCL_PIN     GPIO_PIN_10

#define IIC2_SDA_IN()  {GPIO_CTL1(GPIOB) &= 0xFFFF0FFF;GPIO_CTL1(GPIOB) |= (0x00000008<<(4*3));} //PB11 输入模式
#define IIC2_SDA_OUT() {GPIO_CTL1(GPIOB) &= 0xFFFF0FFF;GPIO_CTL1(GPIOB) |= (0x00000007<<(4*3));} //PB11 输出模式,开漏输出

#define IIC2_SCL(n) (n?gpio_bit_set(IIC2_SCL_PORT, IIC2_SCL_PIN):gpio_bit_reset(IIC2_SCL_PORT, IIC2_SCL_PIN))
#define IIC2_SDA(n) (n?gpio_bit_set(IIC2_SDA_PORT, IIC2_SDA_PIN):gpio_bit_reset(IIC2_SDA_PORT, IIC2_SDA_PIN))

//#define IIC2_SCL_HIGH 	gpio_bit_set(IIC2_SCL_PORT, IIC2_SCL_PIN)
//#define IIC2_SCL_LOW 	gpio_bit_reset(IIC2_SCL_PORT, IIC2_SCL_PIN)
//#define IIC2_SDA_HIGH 	gpio_bit_set(IIC2_SDA_PORT, IIC2_SDA_PIN)
//#define IIC2_SDA_LOW 	gpio_bit_reset(IIC2_SDA_PORT, IIC2_SDA_PIN)
#define IIC2_READ_SDA   gpio_input_bit_get(IIC2_SDA_PORT, IIC2_SDA_PIN)  //输入SDA 


void iic2_init(void);
void IIC2_Start(void);
void IIC2_Stop(void);
u8 IIC2_Wait_Ack(void);
void IIC2_Ack(void);
void IIC2_NAck(void);
void IIC2_Send_Byte(u8 txd);
u8 IIC2_Read_Byte(u8 ack);
float Temp_test(void);

#endif