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