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142 lines
4.1 KiB
142 lines
4.1 KiB
#ifndef __BSP_I2C_SOFT_H
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#define __BSP_I2C_SOFT_H
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#include "main.h"
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#include "stm32f4xx.h"
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// //使用IIC1 PB6 -> SCL, PB7 -> SDA
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#define SCL_PORT GPIOB
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#define SCL_PIN GPIO_PIN_6
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#define SDA_PORT GPIOB
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#define SDA_PIN GPIO_PIN_7
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// #define SDA_IN() { SDA_PORT->MODER &= ~(3 << 1 * 2); SDA_PORT->MODER = (0 << 1 * 2); } //PC1 1*2,
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// #define SDA_OUT() { SDA_PORT->MODER &= ~(3 << 1 * 2); SDA_PORT->MODER = (1 << 1 * 2); }
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#define SDA_IN() {GPIOB->MODER &= ~(3<<(7*2)); GPIOB->MODER |= 0<<7*2;} //PB7输入模式
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#define SDA_OUT() {GPIOB->MODER &= ~(3<<(7*2)); GPIOB->MODER |= 1<<7*2;} //PB7输出模式
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//IO操作函数
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#define i2c_scl_low() HAL_GPIO_WritePin(SCL_PORT, SCL_PIN, GPIO_PIN_RESET)
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#define i2c_scl_high() HAL_GPIO_WritePin(SCL_PORT, SCL_PIN, GPIO_PIN_SET)
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#define i2c_sda_low() HAL_GPIO_WritePin(SDA_PORT, SDA_PIN, GPIO_PIN_RESET)
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#define i2c_sda_high() HAL_GPIO_WritePin(SDA_PORT, SDA_PIN, GPIO_PIN_SET)
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#define i2c_read_sda() HAL_GPIO_ReadPin( SDA_PORT, SDA_PIN )
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extern uint32_t delay1us;
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void delay_1us(uint32_t delay_1us);
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void analog_i2c_delay(void);
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void bsp_analog_i2c_init(void);
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void bsp_analog_i2c_start(void);
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void bsp_analog_i2c_stop(void);
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uint8_t bsp_analog_i2c_wait_ack(void);
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void bsp_analog_i2c_ack(void);
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void bsp_analog_i2c_nack(void);
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void bsp_analog_i2c_send_byte(uint8_t data);
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uint8_t bsp_analog_i2c_read_byte(void);
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// //使用IICX PB6 -> SCL, PB7 -> SDA
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// #define SCL_PORT GPIOB
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// #define SCL_PIN GPIO_PIN_6
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// #define SDA_PORT GPIOB
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// #define SDA_PIN GPIO_PIN_7
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//IO方向设置
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// #define SDA_IN() {GPIOB->CRL&=0X0FFFFFFF;GPIOB->CRL|=(u32)8<<28;} //PB7输入模式
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// #define SDA_OUT() {GPIOB->CRL&=0X0FFFFFFF;GPIOB->CRL|=(u32)3<<28;} //PB7输出模式
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// #define SDA_IN() {GPIOB->MODER &= ~(3<<(7*2)); GPIOB->MODER |= 0<<7*2;} //PB7输入模式
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// #define SDA_OUT() {GPIOB->MODER &= ~(3<<(7*2)); GPIOB->MODER |= 1<<7*2;} //PB7输出模式
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// //IO操作
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// #define IIC_SCL PBout(6) //SCL
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// #define IIC_SDA PBout(7) //SDA
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// #define READ_SDA PBin(7) //输入SDA
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// //IIC所有操作函数
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// void IIC_Init(void); //初始化IIC的IO口
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// void IIC_Start(void); //发送IIC开始信号
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// void IIC_Stop(void); //发送IIC停止信号
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// void IIC_Send_Byte(uint8_t txd); //IIC发送一个字节
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// uint8_t IIC_Read_Byte(unsigned char ack);//IIC读取一个字节
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// uint8_t IIC_Wait_Ack(void); //IIC等待ACK信号
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// void IIC_Ack(void); //IIC发送ACK信号
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// void IIC_NAck(void); //IIC不发送ACK信号
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// void IIC_Write_One_Byte(uint8_t daddr,uint8_t addr,uint8_t data);
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// uint8_t IIC_Read_One_Byte(uint8_t daddr,uint8_t addr);
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/*
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//在AT24CXX指定地址读出一个数据
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//ReadAddr:开始读数的地址
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//返回值 :读到的数据
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u8 AT24CXX_ReadOneByte(u16 ReadAddr)
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{
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u8 temp=0;
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IIC_Start();
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if(EE_TYPE>AT24C16)
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{
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IIC_Send_Byte(0XA0); //发送写命令
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IIC_Wait_Ack();
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IIC_Send_Byte(ReadAddr>>8);//发送高地址
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}else IIC_Send_Byte(0XA0+((ReadAddr/256)<<1)); //发送器件地址0XA0,写数据
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IIC_Wait_Ack();
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IIC_Send_Byte(ReadAddr%256); //发送低地址
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IIC_Wait_Ack();
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IIC_Start();
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IIC_Send_Byte(0XA1); //进入接收模式
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IIC_Wait_Ack();
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temp=IIC_Read_Byte(0);
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IIC_Stop();//产生一个停止条件
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return temp;
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}
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//在AT24CXX指定地址写入一个数据
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//WriteAddr :写入数据的目的地址
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//DataToWrite:要写入的数据
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void AT24CXX_WriteOneByte(u16 WriteAddr,u8 DataToWrite)
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{
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IIC_Start();
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if(EE_TYPE>AT24C16)
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{
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IIC_Send_Byte(0XA0); //发送写命令
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IIC_Wait_Ack();
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IIC_Send_Byte(WriteAddr>>8);//发送高地址
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}else IIC_Send_Byte(0XA0+((WriteAddr/256)<<1)); //发送器件地址0XA0,写数据
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IIC_Wait_Ack();
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IIC_Send_Byte(WriteAddr%256); //发送低地址
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IIC_Wait_Ack();
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IIC_Send_Byte(DataToWrite); //发送字节
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IIC_Wait_Ack();
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IIC_Stop();//产生一个停止条件
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delay_ms(10);
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}
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*/
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#endif
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