init

HARDWARE/MPU6050/I2C.h

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+#ifndef _I2C_H_
+#define _I2C_H_
+
+#include "system.h"
+#include "sys.h"
+#include "math.h"
+#include "stdbool.h"
+#include "stdio.h"
+#include "string.h"
+
+#define SDA_IN()  {GPIOB->MODER&=~(3<<(11*2));GPIOB->MODER|=0<<11*2;}	//PB5输入模式
+#define SDA_OUT() {GPIOB->MODER&=~(3<<(11*2));GPIOB->MODER|=1<<11*2;} //PB5输出模式
+
+//IO操作函数	 
+#define IIC_SCL    PBout(10) //SCL
+#define IIC_SDA    PBout(11) //SDA	 
+#define READ_SDA   PBin(11)  //输入SDA 
+
+
+#ifndef I2C_Direction_Transmitter
+	#define  I2C_Direction_Transmitter      ((uint8_t)0x00)
+#endif
+
+#ifndef I2C_Direction_Receiver
+	#define  I2C_Direction_Receiver         ((uint8_t)0x01)
+#endif
+
+enum
+{
+	I2C_ACK,
+	I2C_NACK
+};
+
+void I2C_SDAMode(uint8_t Mode);
+void I2C_Start(void);
+void I2C_Stop(void);
+bool I2C_WaiteForAck(void);
+void I2C_Ack(void);
+void I2C_NAck(void);
+bool I2C_WriteOneBit(uint8_t DevAddr, uint8_t RegAddr, uint8_t BitNum, uint8_t Data);
+bool I2C_WriteBits(uint8_t DevAddr, uint8_t RegAddr, uint8_t BitStart, uint8_t Length, uint8_t Data);
+void I2C_WriteByte(uint8_t Data);
+uint8_t I2C_ReadByte(uint8_t Ack);
+u8 I2C_WriteOneByte(uint8_t DevAddr, uint8_t RegAddr, uint8_t Data);
+uint8_t I2C_ReadOneByte(uint8_t DevAddr, uint8_t RegAddr);
+bool I2C_WriteBuff(uint8_t DevAddr, uint8_t RegAddr, uint8_t Num, uint8_t *pBuff);
+bool I2C_ReadBuff(uint8_t DevAddr, uint8_t RegAddr, uint8_t Num, uint8_t *pBuff);
+
+void I2C_GPIOInit(void);
+
+#endif
+