C++ (Cpp) I2C_ReceiveByte Examples

Example #1

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File: bus_i2c_soft.c Project: NZFez/betaflight

bool i2cRead(I2CDevice device, uint8_t addr, uint8_t reg, uint8_t len, uint8_t *buf)
{
    UNUSED(device);
    
    if (!I2C_Start()) {
        return false;
    }
    I2C_SendByte(addr << 1 | I2C_Direction_Transmitter);
    if (!I2C_WaitAck()) {
        I2C_Stop();
        i2cErrorCount++;
        return false;
    }
    I2C_SendByte(reg);
    I2C_WaitAck();
    I2C_Start();
    I2C_SendByte(addr << 1 | I2C_Direction_Receiver);
    I2C_WaitAck();
    while (len) {
        *buf = I2C_ReceiveByte();
        if (len == 1) {
            I2C_NoAck();
        }
        else {
            I2C_Ack();
        }
        buf++;
        len--;
    }
    I2C_Stop();
    return true;
}

Example #2

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File: drv_i2c_soft.c Project: AlienWiiBF/baseflight

bool i2cRead(uint8_t addr, uint8_t reg, uint8_t len, uint8_t *buf)
{
    if (!I2C_Start())
        return false;
    I2C_SendByte(addr << 1 | I2C_Direction_Transmitter);
    if (!I2C_WaitAck()) {
        I2C_Stop();
        return false;
    }
    I2C_SendByte(reg);
    I2C_WaitAck();
    I2C_Start();
    I2C_SendByte(addr << 1 | I2C_Direction_Receiver);
    I2C_WaitAck();
    while (len) {
        *buf = I2C_ReceiveByte();
        if (len == 1)
            I2C_NoAck();
        else
            I2C_Ack();
        buf++;
        len--;
    }
    I2C_Stop();
    return true;
}

Example #3

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File: mcu_soft_iic.c Project: batmanatucsd/uMouse

int I2C_read(unsigned char slave_addr, unsigned char reg_addr, unsigned char length, unsigned char *data)
{
    I2C_START();

	I2C_SendByte(slave_addr << 1 | I2C_Direction_Transmitter);

	I2C_SendByte(reg_addr);

	I2C_START();

	I2C_SendByte(slave_addr << 1 | I2C_Direction_Receiver);

    while (length)
	{
		if (length==1)
            *data =I2C_ReceiveByte();
        else
            *data =I2C_ReceiveByte_WithACK();
        data++;
        length--;
    }

	I2C_STOP();
    return 0x00;
}

Example #4

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File: I2C_SW.cpp Project: dreamkeep/Acantha

int I2C_SW::read_regs(uint8_t SlaveAddress, uint8_t startRegister, uint8_t*out, int count)
{
	int i;

	if (!I2C_Start()) {
			return -1;
	}

	I2C_SendByte(SlaveAddress&0xFE);

	if (!I2C_WaitAck()) {
			I2C_Stop();
			return -1;
	}

	I2C_SendByte(startRegister);
	I2C_WaitAck();

	I2C_Start();
	I2C_SendByte((SlaveAddress&0xFE)|0x01);
	I2C_WaitAck();

	for(i=0; i<count; i++)
	{
		out[i] = I2C_ReceiveByte();
		if (i==count-1)
			I2C_SendNoAck();
		else
			I2C_SendAck();
	}

	I2C_Stop();
	
	return 0;
}

Example #5

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File: I2C.c Project: LexsionLee/Lexsion-Code-Hub

/*
*函数名：I2C_ImByteRead
*函数功能：将设备dadr的当前地址处数据读出
*输入：dadr
*输出：dat
*/
unsigned char I2C_ImByteRead(unsigned char dadr)
{
    unsigned char dat;
    I2C_Start();
    I2C_SendByte(dadr | 0x01);
    dat = I2C_ReceiveByte();
    I2C_Stop();
    return dat;
}

Example #6

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File: I2C.c Project: ChenQingya/Pheonix

// I2C模拟读出一个字节
uint8_t I2C_ReadByte(uint8_t DeviceAddr, uint8_t address)
{
   uint8_t i;
   I2C_START();
   I2C_SendByte(DeviceAddr);
   I2C_SendByte(address);
   I2C_START();
   I2C_SendByte(DeviceAddr + 1);
   i = I2C_ReceiveByte();
   I2C_STOP();
   return i;
}

Example #7

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File: I2C.c Project: LexsionLee/Lexsion-Code-Hub

/*
*函数名：I2C_ByteRead
*函数功能：将设备dadr的addr地址处数据读出
*输入：dadr,addr
*输出：dat
*/
unsigned char I2C_ByteRead(unsigned char dadr,addr)
{
    unsigned char dat;
    I2C_Start();
    I2C_SendByte(dadr);
    I2C_SendByte(addr);
    I2C_Start();
    I2C_SendByte(dadr | 0x01);
    //I2C_Delay5Us(); 
    dat = I2C_ReceiveByte();
    I2C_Stop();
    return dat;
}

Example #8

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File: mma8451.c Project: nathanlnw/tw705_HB_gghypt

/***********************************************************
* Function:       // 函数名称
* Description:    // 函数功能、性能等的描述
* Input:          // 1.输入参数1，说明，包括每个参数的作用、取值说明及参数间关系
* Input:          // 2.输入参数2，说明，包括每个参数的作用、取值说明及参数间关系
* Output:         // 1.输出参数1，说明
* Return:         // 函数返回值的说明
* Others:         // 其它说明
***********************************************************/
static uint8_t IIC_RegRead( uint8_t address, uint8_t reg, uint8_t *value )
{
    uint8_t err = ERR_NONE;

    err = I2C_Start( );
    if( err )
    {
        goto lbl_ERR_REG_RD_STOP;
    }
    I2C_SendByte( address << 1 );
    err = I2C_WaitAck( );
    if( err )
    {
        goto lbl_ERR_REG_RD_STOP;
    }

    I2C_SendByte( reg );
    err = I2C_WaitAck( );
    if( err )
    {
        goto lbl_ERR_REG_RD_STOP;
    }

    err = I2C_Start( );
    if( err )
    {
        goto lbl_ERR_REG_RD;
    }

    I2C_SendByte( ( address << 1 ) | 0x01 );
    err = I2C_WaitAck( );
    if( err )
    {
        goto lbl_ERR_REG_RD_STOP;
    }

    *value = I2C_ReceiveByte( );
    I2C_NoAck( );
    I2C_Stop( );
    return ERR_NONE;

lbl_ERR_REG_RD_STOP:
    I2C_Stop( );
lbl_ERR_REG_RD:
    //rt_kprintf( "reg_rd error=%02x reg=%02x\r\n", err, reg );
    return err;
}

Example #9

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File: I2C.c Project: ChenQingya/Pheonix

// I2C模拟读出两个字节
uint16_t I2C_Read_2Bytes(uint8_t DeviceAddr, uint8_t address)
{
	uint8_t data_temp1,data_temp2;
	uint16_t data_16;

	I2C_START();
	I2C_SendByte(DeviceAddr);
	I2C_SendByte(address);
	I2C_START();
	I2C_SendByte(DeviceAddr + 1);
	data_temp1 = I2C_ReceiveByte_WithACK();	
	data_temp2 = I2C_ReceiveByte();
	I2C_STOP();
	
	data_16 = (data_temp1<<8) | data_temp2;
	return data_16;
}

Example #10

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File: I2C.c Project: ChenQingya/Pheonix

// I2C模拟读出三个字节
uint32_t I2C_Read_3Bytes(uint8_t DeviceAddr, uint8_t address)
{
	uint8_t data_temp1, data_temp2, data_temp3;
	uint32_t data_32;

	I2C_START();
	I2C_SendByte(DeviceAddr);
	I2C_SendByte(address);
	I2C_START();
	I2C_SendByte(DeviceAddr + 1);
	data_temp1 = I2C_ReceiveByte_WithACK();
	data_temp2 = I2C_ReceiveByte_WithACK();	
	data_temp3 = I2C_ReceiveByte();
	I2C_STOP();
	
	data_32 = (data_temp1<<16) | (data_temp2<<8) | data_temp3;
	return data_32;
}

Example #11

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File: I2C.c Project: sunzhongmeng/ufun-demo

u8 ReadI2C(u8 address, u8 WriteAddress)	// 读出1串数据
{
	u8 ch;				// 定义存储读出数据的临时变量;

	I2C_Start();		// 启动总线，开始传输数据;
	I2C_SendByte(WriteAddress);
	I2C_WaitAck();		// 发送从器件硬件地址;
	I2C_SendByte(address);
	I2C_WaitAck();		// 发送从器件内部数据存储器的地址;
	I2C_Start();		// 重新启动总线，开始传输数据;
	I2C_SendByte(WriteAddress + 1);
	I2C_WaitAck();		// 发送从器件内部数据存储器的地址;
	ch = I2C_ReceiveByte();
	I2C_NoAck();		// 将读出的一个字节数据存入临时变量，发送非应答位;
	I2C_Stop();			// 发送停止信号，释放总路线;

	return (ch);
}

Example #12

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File: SCCB.c Project: 12019/stm32-camera

/*******************************************************************************
* Function Name  : I2C_ReadByte
* Description    : 读取一串数据
* Input          : - pBuffer: 存放读出数据
*           	   - length: 待读出长度
*                  - ReadAddress: 待读出地址
*                  - DeviceAddress: 器件类型
* Output         : None
* Return         : 返回为:=1成功读入,=0失败
* Attention		 : None
*******************************************************************************/          
int I2C_ReadByte(uint8_t* pBuffer,   uint16_t length,   uint8_t ReadAddress,  uint8_t DeviceAddress)
{	
    if(!I2C_Start())
	{
	    return DISABLE;
	}
    I2C_SendByte( DeviceAddress );         /* 器件地址 */
    if( !I2C_WaitAck() )
	{
		I2C_Stop(); 
		return DISABLE;
	}
    I2C_SendByte( ReadAddress );           /* 设置低起始地址 */      
    I2C_WaitAck();	
    I2C_Stop(); 
	
    if(!I2C_Start())
	{
		return DISABLE;
	}
    I2C_SendByte( DeviceAddress + 1 );               /* 器件地址 */ 
    if(!I2C_WaitAck())
	{
		I2C_Stop(); 
		return DISABLE;
	}
    while(length)
    {
      *pBuffer = I2C_ReceiveByte();
      if(length == 1)
	  {
		  I2C_NoAck();
	  }
      else
	  {
		I2C_Ack(); 
	  }
      pBuffer++;
      length--;
    }
    I2C_Stop();
    return ENABLE;
}

Example #13

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File: I2C.c Project: ChenQingya/Pheonix

// I2C模拟读出多个字节
u8 i2cread(u8 dev_addr, u8 reg_addr, u8 i2c_len, u8 *i2c_data_buf)
{
		I2C_START();
		I2C_SendByte(dev_addr << 1 | I2C_Direction_Transmitter);
		I2C_SendByte(reg_addr);
		I2C_START();
		I2C_SendByte(dev_addr << 1 | I2C_Direction_Receiver);

    while (i2c_len) 
		{
			if (i2c_len == 1) 
				*i2c_data_buf = I2C_ReceiveByte();  
      else 
				*i2c_data_buf = I2C_ReceiveByte_WithACK();
      i2c_data_buf++;
      i2c_len--;
    }
		I2C_STOP();
    return 0x00;
}

Example #14

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File: TMP102.c Project: reynoldxu/DWM

Status ReadTMP102(u16 *TO_EEPROM,u16 *Data_ptr)//读取tmp101的2个字节温度
{
    u16 TMP102_Data=0x0000;


    /*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      ~~~~~~~~~~~~~~~~~~~~~~~~~  Frame 1 ~~~~~~~~~~~~~~~~~~~~~~~~~~~
      ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
	


    //send start------------------1
    if(I2C_Start()!=BUS_READY){
        ERROR_MACRO(TMP102_DEV,RTMP_ERROR_SEND_START);
        return ERROR_FAILED;
    }


    //send SlaveADDR with write
    I2C_SendByte(TMP102_WRITE_ADDR);//------------------2



    if(I2C_WaitAck()!=BUS_ACK){
        ERROR_MACRO(TMP102_DEV,RTMP_ERROR_SEND_DEVADDR);//------------------3
        return ERROR_FAILED;
    }



	


    /*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      ~~~~~~~~~~~~~~~~~~~~~~~~~  Frame 2 ~~~~~~~~~~~~~~~~~~~~~~~~~~~
      ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/

    //send CONF_ADDR------------------4
    I2C_SendByte(TMP102_TEMP_REG);
    if(I2C_WaitAck()!=BUS_ACK){
        ERROR_MACRO(TMP102_DEV,RTMP_ERROR_SEND_TEMPADDR);//------------------5
        return ERROR_FAILED;
    }

    I2C_Stop();//------------------NiMa没看到!!!!!!!!!!!!!!

    /*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      ~~~~~~~~~~~~~~~~~~~~~~~~~  Frame 3 ~~~~~~~~~~~~~~~~~~~~~~~~~~~
      ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/

    //send start------------------6
    if(I2C_Start()!=BUS_READY){
        ERROR_MACRO(TMP102_DEV,RTMP_ERROR_SEND_RESTART);
        return ERROR_FAILED;
    }

    //send SlaveADDR with write
    I2C_SendByte(TMP102_READ_ADDR);//------------------7
    if(I2C_WaitAck()!=BUS_ACK){
        ERROR_MACRO(TMP102_DEV,RTMP_ERROR_SEND_RDEVADDR);//------------------8
        return ERROR_FAILED;
    }

    /*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      ~~~~~~~~~~~~~~~~~~~~~~~~~  Frame 4 ~~~~~~~~~~~~~~~~~~~~~~~~~~~
      ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/

    //read TEMP
    TMP102_Data=0x0000;

    TMP102_Data = I2C_ReceiveByte();//--Byte1-------9
    I2C_Ack();//------------------10


    /*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      ~~~~~~~~~~~~~~~~~~~~~~~~~  Frame 5 ~~~~~~~~~~~~~~~~~~~~~~~~~~~
      ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/

    TMP102_Data<<=8;
    TMP102_Data |= I2C_ReceiveByte();//---Byte2-----11
    I2C_Ack();//------------------12

    //send stop
    I2C_Stop();//------------------13

    /*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      ~~~~~~~~~~~~~~~~~~~~~~~~~   Done   ~~~~~~~~~~~~~~~~~~~~~~~~~~~
      ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/

    TMP102_Data>>=4;


    *Data_ptr = TMP102_Data;

    //==============================================================
    //-25~80



    if(TMP102_Data&(0x800)){
        //负数要转换
        TMP102_Data-=(0x0E70-0x0500-1);
    }

    if(TMP102_Data<=0x690){
        *TO_EEPROM = TMP102_Data*4;
    }
    else{
        printf("Out of range from TMP102,TMP102=%X\t\r\n",*Data_ptr);
        *TO_EEPROM = TO_EEPROM_ERROR;
    }

    //printf("TMP102=%X\tEEPROM=%X\r\n",*Data_ptr,*TO_EEPROM);
    return OK_PASS;
}

Example #15

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File: TMP102.c Project: reynoldxu/DWM

u16 ReadTMP102_REG(unsigned char reg)
{
    u16 TMP102_Data=0x0000;


    /*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      ~~~~~~~~~~~~~~~~~~~~~~~~~  Frame 1 ~~~~~~~~~~~~~~~~~~~~~~~~~~~
      ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/



    //send start------------------1
    if(I2C_Start()!=BUS_READY){
        ERROR_MACRO(TMP102_DEV,RTMP_ERROR_SEND_START);
    }


    //send SlaveADDR with write
    I2C_SendByte(TMP102_WRITE_ADDR);//------------------2
    if(I2C_WaitAck()!=BUS_ACK){
        ERROR_MACRO(TMP102_DEV,RTMP_ERROR_SEND_DEVADDR);//------------------3
    }






    /*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      ~~~~~~~~~~~~~~~~~~~~~~~~~  Frame 2 ~~~~~~~~~~~~~~~~~~~~~~~~~~~
      ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/

    //send CONF_ADDR------------------4
    I2C_SendByte(reg);
    if(I2C_WaitAck()!=BUS_ACK){
        ERROR_MACRO(TMP102_DEV,RTMP_ERROR_SEND_TEMPADDR);//------------------5
    }

    I2C_Stop();//------------------NiMa没看到!!!!!!!!!!!!!!

    /*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      ~~~~~~~~~~~~~~~~~~~~~~~~~  Frame 3 ~~~~~~~~~~~~~~~~~~~~~~~~~~~
      ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/

    //send start------------------6
    if(I2C_Start()!=BUS_READY){
        ERROR_MACRO(TMP102_DEV,RTMP_ERROR_SEND_RESTART);
        return ERROR_FAILED;
    }

    //send SlaveADDR with write
    I2C_SendByte(TMP102_READ_ADDR);//------------------7
    if(I2C_WaitAck()!=BUS_ACK){
        ERROR_MACRO(TMP102_DEV,RTMP_ERROR_SEND_RDEVADDR);//------------------8
        return ERROR_FAILED;
    }

    /*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      ~~~~~~~~~~~~~~~~~~~~~~~~~  Frame 5 ~~~~~~~~~~~~~~~~~~~~~~~~~~~
      ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/

    //read TEMP
    TMP102_Data=0x0000;

    TMP102_Data = I2C_ReceiveByte();//--Byte1-------9
    I2C_Ack();//------------------10

    /*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      ~~~~~~~~~~~~~~~~~~~~~~~~~  Frame 4 ~~~~~~~~~~~~~~~~~~~~~~~~~~~
      ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/

    TMP102_Data=(TMP102_Data<<8);
    TMP102_Data |=(u8)I2C_ReceiveByte();//---Byte2-----11
    I2C_Ack();//------------------12

    //send stop
    I2C_Stop();//------------------13

    /*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      ~~~~~~~~~~~~~~~~~~~~~~~~~   Done   ~~~~~~~~~~~~~~~~~~~~~~~~~~~
      ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/

    return TMP102_Data;

}