IIC代码：
里面的UV_Delay()那几个要自己定义一下。还有那几个子函数也要自己定义在一个头文件里面。比如：
#ifndef _IIC_H #define _IIC_H #define UV_Delay() delay5us() #define UV_SDA_SET() P2^0 = 1 #define UV_SDA_RESET() P2^0 = 0 #define UV_SCL_SET() P2^1 = 1 #define UV_SCL_RESET() P2^1 = 0 //void Fasong_data(unsigned char DevAddress, unsigned char RegAddress, unsigned char Massageess); //char Jieshou_data(unsigned char DevAddress, unsigned char RegAddress); void IIC_Start(); void IIC_Stop(); void UV_SCL_single_clock(); unsigned char IIC_ACKme(); void IIC_ACKher(unsigned char MyAnswer) void IIC_Sent_iBit(unsigned short i, unsigned short store); unsigned short IIC_Rcev_iBit(unsigned short i) #endif
/*
UV_SDA_SET()
UV_SDA_RESET()
UV_SCL_SET()
UV_SCL_RESET()
UV_Delay()
*/
/**
*\filename IIC communication protocol example\IIC通信协议举例
*\author
*\version 1.0.1
*\date forgeted
*\brief This is a simple example for IIC communication protocol and save as
* .txt format, to be easy to move.
* \这是一个简单的IIC通信协议的例子，保存为txt格式以便于搬运。
* functions:
* IIC_Start() \\起始IIC信号
* IIC_Stop() \\终止IIC信号
* UV_SCL_single_clock() \\时钟线SCL产生一个脉冲的功能
* IIC_ACKme() \\她回答我
* IIC_ACKher(unsigned char MyAnswer) \\我回答她
* IIC_Sent_iBit(unsigned short i, unsigned short store) \\发送i个比特\\这两个还可以优化一下发送缓冲区
* IIC_Rcev_iBit(unsigned short i) \\接收i个比特
*
*/
#define is ==
#define Yes 1
/***********************************************************************************************
void Fasong_data(unsigned char DevAddress, unsigned char RegAddress, unsigned char Massageess)
{
IIC_Start();
IIC_Sent_iBit(8, DevAddress);
IIC_ACKme();
IIC_Sent_iBit(8, RegAddress);
IIC_ACKme();
IIC_Sent_iBit(8, Massageess);
IIC_ACKme();
IIC_Stop();
}
char Jieshou_data(unsigned char DevAddress, unsigned char RegAddress)
{
uint8_t The_Massage_I_Recived_Just_Now;
IIC_Start();
IIC_Sent_iBit(8, DevAddress);
IIC_ACKme();
IIC_Sent_iBit(8, RegAddress);
IIC_ACKme();
IIC_Start();
IIC_Sent_iBit(8, DevAddress+1);
IIC_ACKme();
The_Massage_I_Recived_Just_Now = IIC_Rcev_iBit(8);
IIC_ACKher(1);
IIC_Stop();
return The_Massage_I_Recived_Just_Now;
}
*************************************************************************************************/
/*************************************************************************************************
For example:
#define MPU6050 0xD0
#define WHO_AM_I 0x75
#define PWR_MGMT_1 0x6B
\\比如发送个 0x00⬇
Fasong_data(MPU6050, PWR_MGMT_1, 0x00);
\\接收的数据放到The_Data_I_Recived
unsigned char The_Data_I_Recived;
\\设备地址⬇ ⬇设备中WHO_AM_I寄存器的地址
The_Data_I_Recived = Jieshou_data(MPU6050, WHO_AM_I);
*************************************************************************************************/
void IIC_Start()//IIC protocol start signal
{
UV_SDA_SET();//Set SDA line to high level
UV_SCL_SET();//Set SCL line to high level
UV_Delay();//Wait a minute
UV_SDA_RESET();//SDA line falling to low level when SCL line is high level
UV_Delay();//Wait a minute
UV_SCL_RESET();//And SCL line also falling to low level
UV_Delay();//Wait minute
}
void IIC_Stop()//IIC protocol stop signal
{
UV_SDA_RESET();//Make sure that SDA line is low level so that SDA line is stop state
UV_SCL_SET();//Rase the SCL line prepare for stop SCL line state
UV_Delay();//Wait a minute
UV_SDA_SET();//Rasing for stop this transmission
UV_Delay();//Wait a minute
}
void UV_SCL_single_clock()
{
UV_Delay();
UV_SCL_SET();
UV_Delay();
UV_SCL_RESET();
UV_Delay();
}
unsigned char IIC_ACKme()
{
unsigned char HerAnswer;
HerAnswer=UV_SDA_State;
UV_SCL_single_clock();
return HerAnswer;
}
void IIC_ACKher(unsigned char MyAnswer)
{
if(MyAnswer is Yes)
{
UV_SDA_SET();
}
else
{
UV_SDA_RESET();
}
UV_SCL_single_clock();
}
void IIC_Sent_iBit(unsigned short i, unsigned short store)//After start signal, following the simple shift
{
while(i)
{
if((store>>(i-1))&0x01)//Transfer the MSB to SDA line
{
UV_SDA_SET();//"1" level correspond to high level
}
else
{
UV_SDA_RESET();//"0" level correspond to low level
}
UV_SCL_single_clock();
i--;//"i" shift the position of the transfer bit back to "if"
}//When "i" subtract to "0", transmission will be end
}
unsigned short IIC_Rcev_iBit(unsigned short i)//Old way, receive "i" bits' data, just simple shift
{
unsigned short store=0;//A before state is both lines is low level
while(i)
{
store<<=1;//Shift the position for next bit
UV_SCL_SET();//Rasing SCL line will put the bit from the slave device up to the SDA line
UV_Delay();//Wait a minute
store|=UV_SDA_State;//Load the bit in store
UV_SCL_RESET();//SCL line return to low level for next bit
UV_Delay();//Wait a minute
i--;//"i" shift the position of the receive bit back to "if"
}
retuen store;
}
View Code
MPU6050寄存器值：
#define AUX_VDDIO 0x01 //1 #define SMPLRT_DIV 0x19 //2 #define CONFIG 0x1A //3 #define GYRO_CONFIG 0x1B //4 #define ACCEL_CONFIG 0x1C //5 #define FF_THR 0x1D //6 #define FF_DUR 0x1E //7 #define MOT_THR 0x1F //8 #define MOT_DUR 0x20 //9 #define ZRMOT_THR 0x21 //10 #define ZRMOT_DUR 0x22 //11 #define FIFO_EN 0x23 //12 #define I2C_MST_CTRL 0x24 //13 #define I2C_SLV0_ADDR 0x25 //14 #define I2C_SLV0_REG 0x26 //15 #define I2C_SLV0_CTRL 0x27 //16 #define I2C_SLV1_ADDR 0x28 //17 #define I2C_SLV1_REG 0x29 //18 #define I2C_SLV1_CTRL 0x2A //19 #define I2C_SLV2_ADDR 0x2B //20 #define I2C_SLV2_REG 0x2C //21 #define I2C_SLV2_CTRL 0x2D //22 #define I2C_SLV3_ADDR 0x2E //23 #define I2C_SLV3_REG 0x2F //24 #define I2C_SLV3_CTRL 0x30 //25 #define I2C_SLV4_ADDR 0x31 //26 #define I2C_SLV4_REG 0x32 //27 #define I2C_SLV4_DO 0x33 //28 #define I2C_SLV4_CTRL 0x34 //29 #define I2C_SLV4_DI 0x35 //30 #define I2C_MST_STATUS 0x36 //31 #define INT_PIN_CFG 0x37 //32 #define INT_ENABLE 0x38 //33 #define INT_STATUS 0x3A //34 #define ACCEL_XOUT_H 0x3B //35 #define ACCEL_XOUT_L 0x3C //36 #define ACCEL_YOUT_H 0x3D //37 #define ACCEL_YOUT_L 0x3E //38 #define ACCEL_ZOUT_H 0x3F //39 #define ACCEL_ZOUT_L 0x40 //40 #define TEMP_OUT_H 0x41 //41 #define TEMP_OUT_L 0x42 //42 #define GYRO_XOUT_H 0x43 //43 #define GYRO_XOUT_L 0x44 //44 #define GYRO_YOUT_H 0x45 //45 #define GYRO_YOUT_L 0x46 //46 #define GYRO_ZOUT_H 0x47 //47 #define GYRO_ZOUT_L 0x48 //48 #define EXT_SENS_DATA_00 0x49 //49 #define EXT_SENS_DATA_01 0x4A //50 #define EXT_SENS_DATA_02 0x4B //51 #define EXT_SENS_DATA_03 0x4C //52 #define EXT_SENS_DATA_04 0x4D //53 #define EXT_SENS_DATA_05 0x4E //54 #define EXT_SENS_DATA_06 0x4F //55 #define EXT_SENS_DATA_07 0x50 //56 #define EXT_SENS_DATA_08 0x51 //57 #define EXT_SENS_DATA_09 0x52 //58 #define EXT_SENS_DATA_10 0x53 //59 #define EXT_SENS_DATA_11 0x54 //60 #define EXT_SENS_DATA_12 0x55 //61 #define EXT_SENS_DATA_13 0x56 //62 #define EXT_SENS_DATA_14 0x57 //63 #define EXT_SENS_DATA_15 0x58 //64 #define EXT_SENS_DATA_16 0x59 //65 #define EXT_SENS_DATA_17 0x5A //66 #define EXT_SENS_DATA_18 0x5B //67 #define EXT_SENS_DATA_19 0x5C //68 #define EXT_SENS_DATA_20 0x5D //69 #define EXT_SENS_DATA_21 0x5E //70 #define EXT_SENS_DATA_22 0x5F //71 #define EXT_SENS_DATA_23 0x60 //72 #define MOT_DETECT_STATUS 0x61 //73 #define I2C_SLV0_DO 0x63 //74 #define I2C_SLV1_DO 0x64 //75 #define I2C_SLV2_DO 0x65 //76 #define I2C_SLV3_DO 0x66 //77 #define I2C_MST_DELAY_CTRL 0x67 //78 #define SIGNAL_PATH_RESET 0x68 //79 #define MOT_DETECT_CTRL 0x69 //80 #define USER_CTRL 0x6A //81 #define PWR_MGMT_1 0x6B //82 #define PWR_MGMT_2 0x6C //83 #define FIFO_COUNTH 0x72 //84 #define FIFO_COUNTL 0x73 //85 #define FIFO_R_W 0x74 //86 #define WHO_AM_I 0x75 //87 #define MPU_Address 0xD0 //88View Code
标签：MOVE,UV,unsigned,MPU6050,EXT,贴个,IIC,DATA,define From： https://www.cnblogs.com/eternal-wisdom/p/17378857.html